Ender3 - Marlin 2.1.2.4 build (#16)

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/HAL.cpp

@@ -0,0 +1,181 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+#include "../shared/Delay.h"
+
+#include "usb_serial.h"
+
+#ifdef USBCON
+  DefaultSerial1 MSerialUSB(false, SerialUSB);
+#endif
+
+#if ENABLED(SRAM_EEPROM_EMULATION)
+  #if STM32F7xx
+    #include <stm32f7xx_ll_pwr.h>
+  #elif STM32F4xx
+    #include <stm32f4xx_ll_pwr.h>
+  #else
+    #error "SRAM_EEPROM_EMULATION is currently only supported for STM32F4xx and STM32F7xx"
+  #endif
+#endif
+
+#if HAS_SD_HOST_DRIVE
+  #include "msc_sd.h"
+  #include "usbd_cdc_if.h"
+#endif
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+uint16_t MarlinHAL::adc_result;
+
+// ------------------------
+// Public functions
+// ------------------------
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  extern void install_min_serial();
+#endif
+
+// HAL initialization task
+void MarlinHAL::init() {
+  // Ensure F_CPU is a constant expression.
+  // If the compiler breaks here, it means that delay code that should compute at compile time will not work.
+  // So better safe than sorry here.
+  constexpr int cpuFreq = F_CPU;
+  UNUSED(cpuFreq);
+
+  #if HAS_MEDIA && DISABLED(ONBOARD_SDIO) && (defined(SDSS) && SDSS != -1)
+    OUT_WRITE(SDSS, HIGH); // Try to set SDSS inactive before any other SPI users start up
+  #endif
+
+  #if PIN_EXISTS(LED)
+    OUT_WRITE(LED_PIN, LOW);
+  #endif
+
+  #if ENABLED(SRAM_EEPROM_EMULATION)
+    __HAL_RCC_PWR_CLK_ENABLE();
+    HAL_PWR_EnableBkUpAccess();           // Enable access to backup SRAM
+    __HAL_RCC_BKPSRAM_CLK_ENABLE();
+    LL_PWR_EnableBkUpRegulator();         // Enable backup regulator
+    while (!LL_PWR_IsActiveFlag_BRR());   // Wait until backup regulator is initialized
+  #endif
+
+  SetTimerInterruptPriorities();
+
+  #if ENABLED(EMERGENCY_PARSER) && (USBD_USE_CDC || USBD_USE_CDC_MSC)
+    USB_Hook_init();
+  #endif
+
+  TERN_(POSTMORTEM_DEBUGGING, install_min_serial());    // Install the min serial handler
+
+  TERN_(HAS_SD_HOST_DRIVE, MSC_SD_init());              // Enable USB SD card access
+
+  #if PIN_EXISTS(USB_CONNECT)
+    OUT_WRITE(USB_CONNECT_PIN, !USB_CONNECT_INVERTING); // USB clear connection
+    delay(1000);                                        // Give OS time to notice
+    WRITE(USB_CONNECT_PIN, USB_CONNECT_INVERTING);
+  #endif
+}
+
+// HAL idle task
+void MarlinHAL::idletask() {
+  #if HAS_SHARED_MEDIA
+    // Stm32duino currently doesn't have a "loop/idle" method
+    CDC_resume_receive();
+    CDC_continue_transmit();
+  #endif
+}
+
+void MarlinHAL::reboot() { NVIC_SystemReset(); }
+
+uint8_t MarlinHAL::get_reset_source() {
+  return
+    #ifdef RCC_FLAG_IWDGRST // Some sources may not exist...
+      RESET != __HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST)  ? RST_WATCHDOG :
+    #endif
+    #ifdef RCC_FLAG_IWDG1RST
+      RESET != __HAL_RCC_GET_FLAG(RCC_FLAG_IWDG1RST) ? RST_WATCHDOG :
+    #endif
+    #ifdef RCC_FLAG_IWDG2RST
+      RESET != __HAL_RCC_GET_FLAG(RCC_FLAG_IWDG2RST) ? RST_WATCHDOG :
+    #endif
+    #ifdef RCC_FLAG_SFTRST
+      RESET != __HAL_RCC_GET_FLAG(RCC_FLAG_SFTRST)   ? RST_SOFTWARE :
+    #endif
+    #ifdef RCC_FLAG_PINRST
+      RESET != __HAL_RCC_GET_FLAG(RCC_FLAG_PINRST)   ? RST_EXTERNAL :
+    #endif
+    #ifdef RCC_FLAG_PORRST
+      RESET != __HAL_RCC_GET_FLAG(RCC_FLAG_PORRST)   ? RST_POWER_ON :
+    #endif
+    0
+  ;
+}
+
+void MarlinHAL::clear_reset_source() { __HAL_RCC_CLEAR_RESET_FLAGS(); }
+
+// ------------------------
+// Watchdog Timer
+// ------------------------
+
+#if ENABLED(USE_WATCHDOG)
+
+  #define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
+
+  #include <IWatchdog.h>
+
+  void MarlinHAL::watchdog_init() {
+    IF_DISABLED(DISABLE_WATCHDOG_INIT, IWatchdog.begin(WDT_TIMEOUT_US));
+  }
+
+  void MarlinHAL::watchdog_refresh() {
+    IWatchdog.reload();
+    #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
+      TOGGLE(LED_PIN);  // heartbeat indicator
+    #endif
+  }
+
+#endif
+
+extern "C" {
+  extern unsigned int _ebss; // end of bss section
+}
+
+// Reset the system to initiate a firmware flash
+WEAK void flashFirmware(const int16_t) { hal.reboot(); }
+
+// Maple Compatibility
+volatile uint32_t systick_uptime_millis = 0;
+systickCallback_t systick_user_callback;
+void systick_attach_callback(systickCallback_t cb) { systick_user_callback = cb; }
+void HAL_SYSTICK_Callback() {
+  systick_uptime_millis++;
+  if (systick_user_callback) systick_user_callback();
+}
+
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/HAL.h

@@ -0,0 +1,278 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#define CPU_32_BIT
+
+#include "../../core/macros.h"
+#include "../shared/Marduino.h"
+#include "../shared/math_32bit.h"
+#include "../shared/HAL_SPI.h"
+#include "fastio.h"
+#include "Servo.h"
+#include "MarlinSerial.h"
+
+#include "../../inc/MarlinConfigPre.h"
+
+#include <stdint.h>
+
+//
+// Default graphical display delays
+//
+#define CPU_ST7920_DELAY_1 300
+#define CPU_ST7920_DELAY_2  40
+#define CPU_ST7920_DELAY_3 340
+
+// ------------------------
+// Serial ports
+// ------------------------
+#ifdef USBCON
+  #include <USBSerial.h>
+  #include "../../core/serial_hook.h"
+  typedef ForwardSerial1Class< decltype(SerialUSB) > DefaultSerial1;
+  extern DefaultSerial1 MSerialUSB;
+#endif
+
+#define _MSERIAL(X) MSerial##X
+#define MSERIAL(X) _MSERIAL(X)
+
+#if WITHIN(SERIAL_PORT, 1, 9)
+  #define MYSERIAL1 MSERIAL(SERIAL_PORT)
+#elif !defined(USBCON)
+  #error "SERIAL_PORT must be from 1 to 9."
+#elif SERIAL_PORT == -1
+  #define MYSERIAL1 MSerialUSB
+#else
+  #error "SERIAL_PORT must be from 1 to 9, or -1 for Native USB."
+#endif
+
+#ifdef SERIAL_PORT_2
+  #if WITHIN(SERIAL_PORT_2, 1, 9)
+    #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
+  #elif !defined(USBCON)
+    #error "SERIAL_PORT_2 must be from 1 to 9."
+  #elif SERIAL_PORT_2 == -1
+    #define MYSERIAL2 MSerialUSB
+  #else
+    #error "SERIAL_PORT_2 must be from 1 to 9, or -1 for Native USB."
+  #endif
+#endif
+
+#ifdef SERIAL_PORT_3
+  #if WITHIN(SERIAL_PORT_3, 1, 9)
+    #define MYSERIAL3 MSERIAL(SERIAL_PORT_3)
+  #elif !defined(USBCON)
+    #error "SERIAL_PORT_3 must be from 1 to 9."
+  #elif SERIAL_PORT_3 == -1
+    #define MYSERIAL3 MSerialUSB
+  #else
+    #error "SERIAL_PORT_3 must be from 1 to 9, or -1 for Native USB."
+  #endif
+#endif
+
+#ifdef MMU2_SERIAL_PORT
+  #if WITHIN(MMU2_SERIAL_PORT, 1, 9)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #elif !defined(USBCON)
+    #error "MMU2_SERIAL_PORT must be from 1 to 9."
+  #elif MMU2_SERIAL_PORT == -1
+    #define MMU2_SERIAL MSerialUSB
+  #else
+    #error "MMU2_SERIAL_PORT must be from 1 to 9, or -1 for Native USB."
+  #endif
+#endif
+
+#ifdef LCD_SERIAL_PORT
+  #if WITHIN(LCD_SERIAL_PORT, 1, 9)
+    #define LCD_SERIAL MSERIAL(LCD_SERIAL_PORT)
+  #elif !defined(USBCON)
+    #error "LCD_SERIAL_PORT must be from 1 to 9."
+  #elif LCD_SERIAL_PORT == -1
+    #define LCD_SERIAL MSerialUSB
+  #else
+    #error "LCD_SERIAL_PORT must be from 1 to 9, or -1 for Native USB."
+  #endif
+  #if HAS_DGUS_LCD
+    #define LCD_SERIAL_TX_BUFFER_FREE() LCD_SERIAL.availableForWrite()
+  #endif
+#endif
+
+/**
+ * TODO: review this to return 1 for pins that are not analog input
+ */
+#ifndef analogInputToDigitalPin
+  #define analogInputToDigitalPin(p) (p)
+#endif
+
+//
+// Interrupts
+//
+#define CRITICAL_SECTION_START()  const bool irqon = !__get_PRIMASK(); __disable_irq()
+#define CRITICAL_SECTION_END()    if (irqon) __enable_irq()
+#define cli() __disable_irq()
+#define sei() __enable_irq()
+
+// ------------------------
+// Types
+// ------------------------
+
+typedef double isr_float_t;   // FPU ops are used for single-precision, so use double for ISRs.
+
+typedef int32_t pin_t;        // Parity with platform/ststm32
+
+class libServo;
+typedef libServo hal_servo_t;
+#define PAUSE_SERVO_OUTPUT() libServo::pause_all_servos()
+#define RESUME_SERVO_OUTPUT() libServo::resume_all_servos()
+
+// ------------------------
+// ADC
+// ------------------------
+
+#ifdef ADC_RESOLUTION
+  #define HAL_ADC_RESOLUTION ADC_RESOLUTION
+#else
+  #define HAL_ADC_RESOLUTION 12
+#endif
+
+#define HAL_ADC_VREF_MV   3300
+
+//
+// Pin Mapping for M42, M43, M226
+//
+#define GET_PIN_MAP_PIN(index) index
+#define GET_PIN_MAP_INDEX(pin) pin
+#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
+
+#ifdef STM32F1xx
+  #define JTAG_DISABLE() AFIO_DBGAFR_CONFIG(AFIO_MAPR_SWJ_CFG_JTAGDISABLE)
+  #define JTAGSWD_DISABLE() AFIO_DBGAFR_CONFIG(AFIO_MAPR_SWJ_CFG_DISABLE)
+  #define JTAGSWD_RESET() AFIO_DBGAFR_CONFIG(AFIO_MAPR_SWJ_CFG_RESET); // Reset: FULL SWD+JTAG
+#endif
+
+#ifndef PLATFORM_M997_SUPPORT
+  #define PLATFORM_M997_SUPPORT
+#endif
+void flashFirmware(const int16_t);
+
+// Maple Compatibility
+typedef void (*systickCallback_t)(void);
+void systick_attach_callback(systickCallback_t cb);
+void HAL_SYSTICK_Callback();
+
+extern volatile uint32_t systick_uptime_millis;
+
+#define HAL_CAN_SET_PWM_FREQ   // This HAL supports PWM Frequency adjustment
+
+// ------------------------
+// Class Utilities
+// ------------------------
+
+// Memory related
+#define __bss_end __bss_end__
+
+extern "C" char* _sbrk(int incr);
+
+#pragma GCC diagnostic push
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
+
+static inline int freeMemory() {
+  volatile char top;
+  return &top - reinterpret_cast<char*>(_sbrk(0));
+}
+
+#pragma GCC diagnostic pop
+
+// ------------------------
+// MarlinHAL Class
+// ------------------------
+
+class MarlinHAL {
+public:
+
+  // Earliest possible init, before setup()
+  MarlinHAL() {}
+
+  // Watchdog
+  static void watchdog_init()    IF_DISABLED(USE_WATCHDOG, {});
+  static void watchdog_refresh() IF_DISABLED(USE_WATCHDOG, {});
+
+  static void init();          // Called early in setup()
+  static void init_board() {}  // Called less early in setup()
+  static void reboot();        // Restart the firmware from 0x0
+
+  // Interrupts
+  static bool isr_state() { return !__get_PRIMASK(); }
+  static void isr_on()  { sei(); }
+  static void isr_off() { cli(); }
+
+  static void delay_ms(const int ms) { delay(ms); }
+
+  // Tasks, called from idle()
+  static void idletask();
+
+  // Reset
+  static uint8_t get_reset_source();
+  static void clear_reset_source();
+
+  // Free SRAM
+  static int freeMemory() { return ::freeMemory(); }
+
+  //
+  // ADC Methods
+  //
+
+  static uint16_t adc_result;
+
+  // Called by Temperature::init once at startup
+  static void adc_init() {
+    analogReadResolution(HAL_ADC_RESOLUTION);
+  }
+
+  // Called by Temperature::init for each sensor at startup
+  static void adc_enable(const pin_t pin) { pinMode(pin, INPUT); }
+
+  // Begin ADC sampling on the given pin. Called from Temperature::isr!
+  static void adc_start(const pin_t pin) { adc_result = analogRead(pin); }
+
+  // Is the ADC ready for reading?
+  static bool adc_ready() { return true; }
+
+  // The current value of the ADC register
+  static uint16_t adc_value() { return adc_result; }
+
+  /**
+   * Set the PWM duty cycle for the pin to the given value.
+   * Optionally invert the duty cycle [default = false]
+   * Optionally change the maximum size of the provided value to enable finer PWM duty control [default = 255]
+   */
+  static void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
+
+  /**
+   * Set the frequency of the timer for the given pin.
+   * All Timer PWM pins run at the same frequency.
+   */
+  static void set_pwm_frequency(const pin_t pin, const uint16_t f_desired);
+
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/HAL_SPI.cpp

@@ -0,0 +1,229 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#include <SPI.h>
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+static SPISettings spiConfig;
+
+// ------------------------
+// Public functions
+// ------------------------
+
+#if ENABLED(SOFTWARE_SPI)
+
+  // ------------------------
+  // Software SPI
+  // ------------------------
+
+  #include "../shared/Delay.h"
+
+  void spiBegin(void) {
+    #if PIN_EXISTS(SD_SS)
+      OUT_WRITE(SD_SS_PIN, HIGH);
+    #endif
+    OUT_WRITE(SD_SCK_PIN, HIGH);
+    SET_INPUT(SD_MISO_PIN);
+    OUT_WRITE(SD_MOSI_PIN, HIGH);
+  }
+
+  // Use function with compile-time value so we can actually reach the desired frequency
+  // Need to adjust this a little bit: on a 72MHz clock, we have 14ns/clock
+  // and we'll use ~3 cycles to jump to the method and going back, so it'll take ~40ns from the given clock here
+  #define CALLING_COST_NS  (3U * 1000000000U) / (F_CPU)
+  void (*delaySPIFunc)();
+  void delaySPI_125()  { DELAY_NS(125 - CALLING_COST_NS); }
+  void delaySPI_250()  { DELAY_NS(250 - CALLING_COST_NS); }
+  void delaySPI_500()  { DELAY_NS(500 - CALLING_COST_NS); }
+  void delaySPI_1000() { DELAY_NS(1000 - CALLING_COST_NS); }
+  void delaySPI_2000() { DELAY_NS(2000 - CALLING_COST_NS); }
+  void delaySPI_4000() { DELAY_NS(4000 - CALLING_COST_NS); }
+
+  void spiInit(uint8_t spiRate) {
+    // Use datarates Marlin uses
+    switch (spiRate) {
+      case SPI_FULL_SPEED:   delaySPIFunc =  &delaySPI_125; break;  // desired: 8,000,000  actual: ~1.1M
+      case SPI_HALF_SPEED:   delaySPIFunc =  &delaySPI_125; break;  // desired: 4,000,000  actual: ~1.1M
+      case SPI_QUARTER_SPEED:delaySPIFunc =  &delaySPI_250; break;  // desired: 2,000,000  actual: ~890K
+      case SPI_EIGHTH_SPEED: delaySPIFunc =  &delaySPI_500; break;  // desired: 1,000,000  actual: ~590K
+      case SPI_SPEED_5:      delaySPIFunc = &delaySPI_1000; break;  // desired:   500,000  actual: ~360K
+      case SPI_SPEED_6:      delaySPIFunc = &delaySPI_2000; break;  // desired:   250,000  actual: ~210K
+      default:               delaySPIFunc = &delaySPI_4000; break;  // desired:   125,000  actual: ~123K
+    }
+  }
+
+  // Begin SPI transaction, set clock, bit order, data mode
+  void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) { /* do nothing */ }
+
+  uint8_t HAL_SPI_STM32_SpiTransfer_Mode_3(uint8_t b) { // using Mode 3
+    for (uint8_t bits = 8; bits--;) {
+      WRITE(SD_SCK_PIN, LOW);
+      WRITE(SD_MOSI_PIN, b & 0x80);
+
+      delaySPIFunc();
+      WRITE(SD_SCK_PIN, HIGH);
+      delaySPIFunc();
+
+      b <<= 1;        // little setup time
+      b |= (READ(SD_MISO_PIN) != 0);
+    }
+    DELAY_NS(125);
+    return b;
+  }
+
+  // Soft SPI receive byte
+  uint8_t spiRec() {
+    hal.isr_off();                                                // No interrupts during byte receive
+    const uint8_t data = HAL_SPI_STM32_SpiTransfer_Mode_3(0xFF);
+    hal.isr_on();                                                 // Enable interrupts
+    return data;
+  }
+
+  // Soft SPI read data
+  void spiRead(uint8_t *buf, uint16_t nbyte) {
+    for (uint16_t i = 0; i < nbyte; i++)
+      buf[i] = spiRec();
+  }
+
+  // Soft SPI send byte
+  void spiSend(uint8_t data) {
+    hal.isr_off();                          // No interrupts during byte send
+    HAL_SPI_STM32_SpiTransfer_Mode_3(data); // Don't care what is received
+    hal.isr_on();                           // Enable interrupts
+  }
+
+  // Soft SPI send block
+  void spiSendBlock(uint8_t token, const uint8_t *buf) {
+    spiSend(token);
+    for (uint16_t i = 0; i < 512; i++)
+      spiSend(buf[i]);
+  }
+
+#else
+
+  // ------------------------
+  // Hardware SPI
+  // ------------------------
+
+  /**
+   * VGPV SPI speed start and PCLK2/2, by default 108/2 = 54Mhz
+   */
+
+  /**
+   * @brief  Begin SPI port setup
+   *
+   * @return Nothing
+   *
+   * @details Only configures SS pin since stm32duino creates and initialize the SPI object
+   */
+  void spiBegin() {
+    #if PIN_EXISTS(SD_SS)
+      OUT_WRITE(SD_SS_PIN, HIGH);
+    #endif
+  }
+
+  // Configure SPI for specified SPI speed
+  void spiInit(uint8_t spiRate) {
+    // Use datarates Marlin uses
+    uint32_t clock;
+    switch (spiRate) {
+      case SPI_FULL_SPEED:    clock = 20000000; break; // 13.9mhz=20000000  6.75mhz=10000000  3.38mhz=5000000  .833mhz=1000000
+      case SPI_HALF_SPEED:    clock =  5000000; break;
+      case SPI_QUARTER_SPEED: clock =  2500000; break;
+      case SPI_EIGHTH_SPEED:  clock =  1250000; break;
+      case SPI_SPEED_5:       clock =   625000; break;
+      case SPI_SPEED_6:       clock =   300000; break;
+      default:
+        clock = 4000000; // Default from the SPI library
+    }
+    spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
+
+    SPI.setMISO(SD_MISO_PIN);
+    SPI.setMOSI(SD_MOSI_PIN);
+    SPI.setSCLK(SD_SCK_PIN);
+
+    SPI.begin();
+  }
+
+  /**
+   * @brief  Receives a single byte from the SPI port.
+   *
+   * @return Byte received
+   *
+   * @details
+   */
+  uint8_t spiRec() {
+    uint8_t returnByte = SPI.transfer(0xFF);
+    return returnByte;
+  }
+
+  /**
+   * @brief  Receive a number of bytes from the SPI port to a buffer
+   *
+   * @param  buf   Pointer to starting address of buffer to write to.
+   * @param  nbyte Number of bytes to receive.
+   * @return Nothing
+   *
+   * @details Uses DMA
+   */
+  void spiRead(uint8_t *buf, uint16_t nbyte) {
+    if (nbyte == 0) return;
+    memset(buf, 0xFF, nbyte);
+    SPI.transfer(buf, nbyte);
+  }
+
+  /**
+   * @brief  Send a single byte on SPI port
+   *
+   * @param  b Byte to send
+   *
+   * @details
+   */
+  void spiSend(uint8_t b) {
+    SPI.transfer(b);
+  }
+
+  /**
+   * @brief  Write token and then write from 512 byte buffer to SPI (for SD card)
+   *
+   * @param  buf   Pointer with buffer start address
+   * @return Nothing
+   *
+   * @details Use DMA
+   */
+  void spiSendBlock(uint8_t token, const uint8_t *buf) {
+    uint8_t rxBuf[512];
+    SPI.transfer(token);
+    SPI.transfer((uint8_t*)buf, &rxBuf, 512);
+  }
+
+#endif // SOFTWARE_SPI
+
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/MarlinSPI.cpp

@@ -0,0 +1,174 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#if defined(HAL_STM32) && !defined(STM32H7xx)
+
+#include "MarlinSPI.h"
+
+static void spi_init(spi_t *obj, uint32_t speed, spi_mode_e mode, uint8_t msb, uint32_t dataSize) {
+  spi_init(obj, speed, mode, msb);
+  // spi_init set 8bit always
+  // TODO: copy the code from spi_init and handle data size, to avoid double init always!!
+  if (dataSize != SPI_DATASIZE_8BIT) {
+    obj->handle.Init.DataSize = dataSize;
+    HAL_SPI_Init(&obj->handle);
+    __HAL_SPI_ENABLE(&obj->handle);
+  }
+}
+
+void MarlinSPI::setClockDivider(uint8_t _div) {
+  _speed = spi_getClkFreq(&_spi);// / _div;
+  _clockDivider = _div;
+}
+
+void MarlinSPI::begin(void) {
+  //TODO: only call spi_init if any parameter changed!!
+  spi_init(&_spi, _speed, _dataMode, _bitOrder, _dataSize);
+}
+
+void MarlinSPI::setupDma(SPI_HandleTypeDef &_spiHandle, DMA_HandleTypeDef &_dmaHandle, uint32_t direction, bool minc) {
+  _dmaHandle.Init.Direction = direction;
+  _dmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
+  _dmaHandle.Init.Mode = DMA_NORMAL;
+  _dmaHandle.Init.Priority = DMA_PRIORITY_LOW;
+  _dmaHandle.Init.MemInc = minc ? DMA_MINC_ENABLE : DMA_MINC_DISABLE;
+
+  if (_dataSize == DATA_SIZE_8BIT) {
+    _dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
+    _dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
+  }
+  else {
+    _dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+    _dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+  }
+  #ifdef STM32F4xx
+    _dmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+  #endif
+
+  // start DMA hardware
+  // TODO: check if hardware is already enabled
+  #ifdef SPI1_BASE
+    if (_spiHandle.Instance == SPI1) {
+      #ifdef STM32F1xx
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel3 : DMA1_Channel2;
+      #elif defined(STM32F4xx)
+        __HAL_RCC_DMA2_CLK_ENABLE();
+        _dmaHandle.Init.Channel = DMA_CHANNEL_3;
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Stream3 : DMA2_Stream0;
+      #endif
+    }
+  #endif
+  #ifdef SPI2_BASE
+    if (_spiHandle.Instance == SPI2) {
+      #ifdef STM32F1xx
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel5 : DMA1_Channel4;
+      #elif defined(STM32F4xx)
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        _dmaHandle.Init.Channel = DMA_CHANNEL_0;
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Stream4 : DMA1_Stream3;
+      #endif
+    }
+  #endif
+  #ifdef SPI3_BASE
+    if (_spiHandle.Instance == SPI3) {
+      #ifdef STM32F1xx
+        __HAL_RCC_DMA2_CLK_ENABLE();
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Channel2 : DMA2_Channel1;
+      #elif defined(STM32F4xx)
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        _dmaHandle.Init.Channel = DMA_CHANNEL_0;
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Stream5 : DMA1_Stream2;
+      #endif
+    }
+  #endif
+
+  HAL_DMA_Init(&_dmaHandle);
+}
+
+byte MarlinSPI::transfer(uint8_t _data) {
+  uint8_t rxData = 0xFF;
+  HAL_SPI_TransmitReceive(&_spi.handle, &_data, &rxData, 1, HAL_MAX_DELAY);
+  return rxData;
+}
+
+__STATIC_INLINE void LL_SPI_EnableDMAReq_RX(SPI_TypeDef *SPIx) { SET_BIT(SPIx->CR2, SPI_CR2_RXDMAEN); }
+__STATIC_INLINE void LL_SPI_EnableDMAReq_TX(SPI_TypeDef *SPIx) { SET_BIT(SPIx->CR2, SPI_CR2_TXDMAEN); }
+
+uint8_t MarlinSPI::dmaTransfer(const void *transmitBuf, void *receiveBuf, uint16_t length) {
+  const uint8_t ff = 0xFF;
+
+  //if (!LL_SPI_IsEnabled(_spi.handle)) // only enable if disabled
+  __HAL_SPI_ENABLE(&_spi.handle);
+
+  if (receiveBuf) {
+    setupDma(_spi.handle, _dmaRx, DMA_PERIPH_TO_MEMORY, true);
+    HAL_DMA_Start(&_dmaRx, (uint32_t)&(_spi.handle.Instance->DR), (uint32_t)receiveBuf, length);
+    LL_SPI_EnableDMAReq_RX(_spi.handle.Instance); // Enable Rx DMA Request
+  }
+
+  // check for 2 lines transfer
+  bool mincTransmit = true;
+  if (transmitBuf == nullptr && _spi.handle.Init.Direction == SPI_DIRECTION_2LINES && _spi.handle.Init.Mode == SPI_MODE_MASTER) {
+    transmitBuf = &ff;
+    mincTransmit = false;
+  }
+
+  if (transmitBuf) {
+    setupDma(_spi.handle, _dmaTx, DMA_MEMORY_TO_PERIPH, mincTransmit);
+    HAL_DMA_Start(&_dmaTx, (uint32_t)transmitBuf, (uint32_t)&(_spi.handle.Instance->DR), length);
+    LL_SPI_EnableDMAReq_TX(_spi.handle.Instance); // Enable Tx DMA Request
+  }
+
+  if (transmitBuf) {
+    HAL_DMA_PollForTransfer(&_dmaTx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+    HAL_DMA_Abort(&_dmaTx);
+    HAL_DMA_DeInit(&_dmaTx);
+  }
+
+  // while ((_spi.handle.Instance->SR & SPI_FLAG_RXNE) != SPI_FLAG_RXNE) {}
+
+  if (receiveBuf) {
+    HAL_DMA_PollForTransfer(&_dmaRx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+    HAL_DMA_Abort(&_dmaRx);
+    HAL_DMA_DeInit(&_dmaRx);
+  }
+
+  return 1;
+}
+
+uint8_t MarlinSPI::dmaSend(const void * transmitBuf, uint16_t length, bool minc) {
+  setupDma(_spi.handle, _dmaTx, DMA_MEMORY_TO_PERIPH, minc);
+  HAL_DMA_Start(&_dmaTx, (uint32_t)transmitBuf, (uint32_t)&(_spi.handle.Instance->DR), length);
+  __HAL_SPI_ENABLE(&_spi.handle);
+  LL_SPI_EnableDMAReq_TX(_spi.handle.Instance); // Enable Tx DMA Request
+  HAL_DMA_PollForTransfer(&_dmaTx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+  HAL_DMA_Abort(&_dmaTx);
+  // DeInit objects
+  HAL_DMA_DeInit(&_dmaTx);
+  return 1;
+}
+
+#endif // HAL_STM32 && !STM32H7xx

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/MarlinSPI.h

@@ -0,0 +1,107 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "HAL.h"
+#include <SPI.h>
+
+extern "C" {
+  #include <utility/spi_com.h>
+}
+
+/**
+ * Marlin currently requires 3 SPI classes:
+ *
+ * SPIClass:
+ *  This class is normally provided by frameworks and has a semi-default interface.
+ *  This is needed because some libraries reference it globally.
+ *
+ * SPISettings:
+ *  Container for SPI configs for SPIClass. As above, libraries may reference it globally.
+ *
+ * These two classes are often provided by frameworks so we cannot extend them to add
+ * useful methods for Marlin.
+ *
+ * MarlinSPI:
+ *  Provides the default SPIClass interface plus some Marlin goodies such as a simplified
+ *  interface for SPI DMA transfer.
+ *
+ */
+
+#define DATA_SIZE_8BIT SPI_DATASIZE_8BIT
+#define DATA_SIZE_16BIT SPI_DATASIZE_16BIT
+
+class MarlinSPI {
+public:
+  MarlinSPI() : MarlinSPI(NC, NC, NC, NC) {}
+
+  MarlinSPI(pin_t mosi, pin_t miso, pin_t sclk, pin_t ssel = (pin_t)NC) : _mosiPin(mosi), _misoPin(miso), _sckPin(sclk), _ssPin(ssel) {
+    _spi.pin_miso = digitalPinToPinName(_misoPin);
+    _spi.pin_mosi = digitalPinToPinName(_mosiPin);
+    _spi.pin_sclk = digitalPinToPinName(_sckPin);
+    _spi.pin_ssel = digitalPinToPinName(_ssPin);
+    _dataSize = DATA_SIZE_8BIT;
+    _bitOrder = MSBFIRST;
+    _dataMode = SPI_MODE_0;
+    _spi.handle.State = HAL_SPI_STATE_RESET;
+    setClockDivider(SPI_SPEED_CLOCK_DIV2_MHZ);
+  }
+
+  void begin(void);
+  void end(void) {}
+
+  byte transfer(uint8_t _data);
+  uint8_t dmaTransfer(const void *transmitBuf, void *receiveBuf, uint16_t length);
+  uint8_t dmaSend(const void * transmitBuf, uint16_t length, bool minc = true);
+
+  /* These methods are deprecated and kept for compatibility.
+   * Use SPISettings with SPI.beginTransaction() to configure SPI parameters.
+   */
+  void setBitOrder(BitOrder _order) { _bitOrder = _order; }
+
+  void setDataMode(uint8_t _mode) {
+    switch (_mode) {
+      case SPI_MODE0: _dataMode = SPI_MODE_0; break;
+      case SPI_MODE1: _dataMode = SPI_MODE_1; break;
+      case SPI_MODE2: _dataMode = SPI_MODE_2; break;
+      case SPI_MODE3: _dataMode = SPI_MODE_3; break;
+    }
+  }
+
+  void setClockDivider(uint8_t _div);
+
+private:
+  void setupDma(SPI_HandleTypeDef &_spiHandle, DMA_HandleTypeDef &_dmaHandle, uint32_t direction, bool minc = false);
+
+  spi_t _spi;
+  DMA_HandleTypeDef _dmaTx;
+  DMA_HandleTypeDef _dmaRx;
+  BitOrder _bitOrder;
+  spi_mode_e _dataMode;
+  uint8_t _clockDivider;
+  uint32_t _speed;
+  uint32_t _dataSize;
+  pin_t _mosiPin;
+  pin_t _misoPin;
+  pin_t _sckPin;
+  pin_t _ssPin;
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/MarlinSerial.cpp

@@ -0,0 +1,119 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+#include "MarlinSerial.h"
+
+#if ENABLED(EMERGENCY_PARSER)
+  #include "../../feature/e_parser.h"
+#endif
+
+#ifndef USART4
+  #define USART4 UART4
+#endif
+#ifndef USART5
+  #define USART5 UART5
+#endif
+#ifndef USART7
+  #define USART7 UART7
+#endif
+#ifndef USART8
+  #define USART8 UART8
+#endif
+#ifndef USART9
+  #define USART9 UART9
+#endif
+
+#define DECLARE_SERIAL_PORT(ser_num) \
+  void _rx_complete_irq_ ## ser_num (serial_t * obj); \
+  MSerialT MSerial ## ser_num (true, USART ## ser_num, &_rx_complete_irq_ ## ser_num); \
+  void _rx_complete_irq_ ## ser_num (serial_t * obj) { MSerial ## ser_num ._rx_complete_irq(obj); }
+
+#if USING_HW_SERIAL1
+  DECLARE_SERIAL_PORT(1)
+#endif
+#if USING_HW_SERIAL2
+  DECLARE_SERIAL_PORT(2)
+#endif
+#if USING_HW_SERIAL3
+  DECLARE_SERIAL_PORT(3)
+#endif
+#if USING_HW_SERIAL4
+  DECLARE_SERIAL_PORT(4)
+#endif
+#if USING_HW_SERIAL5
+  DECLARE_SERIAL_PORT(5)
+#endif
+#if USING_HW_SERIAL6
+  DECLARE_SERIAL_PORT(6)
+#endif
+#if USING_HW_SERIAL7
+  DECLARE_SERIAL_PORT(7)
+#endif
+#if USING_HW_SERIAL8
+  DECLARE_SERIAL_PORT(8)
+#endif
+#if USING_HW_SERIAL9
+  DECLARE_SERIAL_PORT(9)
+#endif
+#if USING_HW_SERIAL10
+  DECLARE_SERIAL_PORT(10)
+#endif
+#if USING_HW_SERIALLP1
+  DECLARE_SERIAL_PORT(LP1)
+#endif
+
+void MarlinSerial::begin(unsigned long baud, uint8_t config) {
+  HardwareSerial::begin(baud, config);
+  // Replace the IRQ callback with the one we have defined
+  TERN_(EMERGENCY_PARSER, _serial.rx_callback = _rx_callback);
+}
+
+// This function is Copyright (c) 2006 Nicholas Zambetti.
+void MarlinSerial::_rx_complete_irq(serial_t *obj) {
+  // No Parity error, read byte and store it in the buffer if there is room
+  unsigned char c;
+
+  if (uart_getc(obj, &c) == 0) {
+
+    rx_buffer_index_t i = (unsigned int)(obj->rx_head + 1) % SERIAL_RX_BUFFER_SIZE;
+
+    // if we should be storing the received character into the location
+    // just before the tail (meaning that the head would advance to the
+    // current location of the tail), we're about to overflow the buffer
+    // and so we don't write the character or advance the head.
+    if (i != obj->rx_tail) {
+      obj->rx_buff[obj->rx_head] = c;
+      obj->rx_head = i;
+    }
+
+    #if ENABLED(EMERGENCY_PARSER)
+      emergency_parser.update(static_cast<MSerialT*>(this)->emergency_state, c);
+    #endif
+  }
+}
+
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/MarlinSerial.h

@@ -0,0 +1,59 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(EMERGENCY_PARSER)
+  #include "../../feature/e_parser.h"
+#endif
+
+#include "../../core/serial_hook.h"
+
+typedef void (*usart_rx_callback_t)(serial_t * obj);
+
+struct MarlinSerial : public HardwareSerial {
+  MarlinSerial(void *peripheral, usart_rx_callback_t rx_callback) :
+      HardwareSerial(peripheral), _rx_callback(rx_callback)
+  { }
+
+  void begin(unsigned long baud, uint8_t config);
+  inline void begin(unsigned long baud) { begin(baud, SERIAL_8N1); }
+
+  void _rx_complete_irq(serial_t *obj);
+
+protected:
+  usart_rx_callback_t _rx_callback;
+};
+
+typedef Serial1Class<MarlinSerial> MSerialT;
+extern MSerialT MSerial1;
+extern MSerialT MSerial2;
+extern MSerialT MSerial3;
+extern MSerialT MSerial4;
+extern MSerialT MSerial5;
+extern MSerialT MSerial6;
+extern MSerialT MSerial7;
+extern MSerialT MSerial8;
+extern MSerialT MSerial9;
+extern MSerialT MSerial10;
+extern MSerialT MSerialLP1;

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/MinSerial.cpp

@@ -0,0 +1,155 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+
+#include "../shared/MinSerial.h"
+
+/* Instruction Synchronization Barrier */
+#define isb() __asm__ __volatile__ ("isb" : : : "memory")
+
+/* Data Synchronization Barrier */
+#define dsb() __asm__ __volatile__ ("dsb" : : : "memory")
+
+// Dumb mapping over the registers of a USART device on STM32
+struct USARTMin {
+  volatile uint32_t SR;
+  volatile uint32_t DR;
+  volatile uint32_t BRR;
+  volatile uint32_t CR1;
+  volatile uint32_t CR2;
+};
+
+#if WITHIN(SERIAL_PORT, 1, 9)
+  // Depending on the CPU, the serial port is different for USART1
+  static const uintptr_t regsAddr[] = {
+    TERN(STM32F1xx, 0x40013800, 0x40011000), // USART1
+    0x40004400, // USART2
+    0x40004800, // USART3
+    0x40004C00, // UART4_BASE
+    0x40005000, // UART5_BASE
+    0x40011400, // USART6
+    0x40007800, // UART7_BASE
+    0x40007C00, // UART8_BASE
+    0x40011800  // UART9_BASE
+  };
+  static USARTMin * regs = (USARTMin*)regsAddr[SERIAL_PORT - 1];
+#endif
+
+static void TXBegin() {
+  #if !WITHIN(SERIAL_PORT, 1, 6)
+    #warning "Using POSTMORTEM_DEBUGGING requires a physical U(S)ART hardware in case of severe error."
+    #warning "Disabling the severe error reporting feature currently because the used serial port is not a HW port."
+  #else
+    // This is common between STM32F1/STM32F2 and STM32F4
+    const int nvicUART[] = { /* NVIC_USART1 */ 37, /* NVIC_USART2 */ 38, /* NVIC_USART3 */ 39, /* NVIC_UART4 */ 52, /* NVIC_UART5 */ 53, /* NVIC_USART6 */ 71 };
+    int nvicIndex = nvicUART[SERIAL_PORT - 1];
+
+    struct NVICMin {
+      volatile uint32_t ISER[32];
+      volatile uint32_t ICER[32];
+    };
+
+    NVICMin *nvicBase = (NVICMin*)0xE000E100;
+    SBI32(nvicBase->ICER[nvicIndex >> 5], nvicIndex & 0x1F);
+
+    // We NEED memory barriers to ensure Interrupts are actually disabled!
+    // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
+    dsb();
+    isb();
+
+    // Example for USART1 disable:  (RCC->APB2ENR &= ~(RCC_APB2ENR_USART1EN))
+    // Too difficult to reimplement here, let's query the STM32duino macro here
+    #if SERIAL_PORT == 1
+      __HAL_RCC_USART1_CLK_DISABLE();
+      __HAL_RCC_USART1_CLK_ENABLE();
+    #elif SERIAL_PORT == 2
+      __HAL_RCC_USART2_CLK_DISABLE();
+      __HAL_RCC_USART2_CLK_ENABLE();
+    #elif SERIAL_PORT == 3
+      __HAL_RCC_USART3_CLK_DISABLE();
+      __HAL_RCC_USART3_CLK_ENABLE();
+    #elif SERIAL_PORT == 4
+      __HAL_RCC_UART4_CLK_DISABLE(); // BEWARE: UART4 and not USART4 here
+      __HAL_RCC_UART4_CLK_ENABLE();
+    #elif SERIAL_PORT == 5
+      __HAL_RCC_UART5_CLK_DISABLE(); // BEWARE: UART5 and not USART5 here
+      __HAL_RCC_UART5_CLK_ENABLE();
+    #elif SERIAL_PORT == 6
+      __HAL_RCC_USART6_CLK_DISABLE();
+      __HAL_RCC_USART6_CLK_ENABLE();
+    #endif
+
+    uint32_t brr = regs->BRR;
+    regs->CR1 = 0; // Reset the USART
+    regs->CR2 = 0; // 1 stop bit
+
+    // If we don't touch the BRR (baudrate register), we don't need to recompute.
+    regs->BRR = brr;
+
+    regs->CR1 = _BV(3) | _BV(13); // 8 bits, no parity, 1 stop bit (TE | UE)
+  #endif
+}
+
+// A SW memory barrier, to ensure GCC does not overoptimize loops
+#define sw_barrier() __asm__ volatile("": : :"memory");
+static void TX(char c) {
+  #if WITHIN(SERIAL_PORT, 1, 9)
+    constexpr uint32_t usart_sr_txe = _BV(7);
+    while (!(regs->SR & usart_sr_txe)) {
+      hal.watchdog_refresh();
+      sw_barrier();
+    }
+    regs->DR = c;
+  #else
+    // Let's hope a mystical guru will fix this, one day by writing interrupt-free USB CDC ACM code (or, at least, by polling the registers since interrupt will be queued but will never trigger)
+    // For now, it's completely lost to oblivion.
+  #endif
+}
+
+void install_min_serial() {
+  HAL_min_serial_init = &TXBegin;
+  HAL_min_serial_out = &TX;
+}
+
+#if NONE(DYNAMIC_VECTORTABLE, STM32F0xx, STM32G0xx) // Cortex M0 can't jump to a symbol that's too far from the current function, so we work around this in exception_arm.cpp
+  extern "C" {
+    __attribute__((naked)) void JumpHandler_ASM() {
+      __asm__ __volatile__ (
+        "b CommonHandler_ASM\n"
+      );
+    }
+    void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) HardFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) BusFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) UsageFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) MemManage_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) NMI_Handler();
+  }
+#endif
+
+#endif // POSTMORTEM_DEBUGGING
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/README.md

@@ -0,0 +1,11 @@
+# Generic STM32 HAL based on the stm32duino core
+
+This HAL is intended to act as the generic STM32 HAL for all STM32 chips (The whole F, H and L family).
+
+Currently it supports:
+ * STM32F0xx
+ * STM32F1xx
+ * STM32F4xx
+ * STM32F7xx
+
+Targeting the official [Arduino STM32 Core](https://github.com/stm32duino/Arduino_Core_STM32).

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/Servo.cpp

@@ -0,0 +1,111 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#if HAS_SERVOS
+
+#include "Servo.h"
+
+static uint_fast8_t servoCount = 0;
+static libServo *servos[NUM_SERVOS] = {0};
+constexpr millis_t servoDelay[] = SERVO_DELAY;
+static_assert(COUNT(servoDelay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
+
+// Initialize to the default timer priority. This will be overridden by a call from timers.cpp.
+// This allows all timer interrupt priorities to be managed from a single location in the HAL.
+static uint32_t servo_interrupt_priority = NVIC_EncodePriority(NVIC_GetPriorityGrouping(), TIM_IRQ_PRIO, TIM_IRQ_SUBPRIO);
+
+// This must be called after the STM32 Servo class has initialized the timer.
+// It may only be needed after the first call to attach(), but it is possible
+// that is is necessary after every detach() call. To be safe this is currently
+// called after every call to attach().
+static void fixServoTimerInterruptPriority() {
+  NVIC_SetPriority(getTimerUpIrq(TIMER_SERVO), servo_interrupt_priority);
+}
+
+libServo::libServo()
+: delay(servoDelay[servoCount]),
+  was_attached_before_pause(false),
+  value_before_pause(0)
+{
+  servos[servoCount++] = this;
+}
+
+int8_t libServo::attach(const int pin) {
+  if (servoCount >= MAX_SERVOS) return -1;
+  if (pin > 0) servo_pin = pin;
+  auto result = stm32_servo.attach(servo_pin);
+  fixServoTimerInterruptPriority();
+  return result;
+}
+
+int8_t libServo::attach(const int pin, const int min, const int max) {
+  if (servoCount >= MAX_SERVOS) return -1;
+  if (pin > 0) servo_pin = pin;
+  auto result = stm32_servo.attach(servo_pin, min, max);
+  fixServoTimerInterruptPriority();
+  return result;
+}
+
+void libServo::move(const int value) {
+  if (attach(0) >= 0) {
+    stm32_servo.write(value);
+    safe_delay(delay);
+    TERN_(DEACTIVATE_SERVOS_AFTER_MOVE, detach());
+  }
+}
+
+void libServo::pause() {
+  was_attached_before_pause = stm32_servo.attached();
+  if (was_attached_before_pause) {
+    value_before_pause = stm32_servo.read();
+    stm32_servo.detach();
+  }
+}
+
+void libServo::resume() {
+  if (was_attached_before_pause) {
+    attach();
+    move(value_before_pause);
+  }
+}
+
+void libServo::pause_all_servos() {
+  for (auto& servo : servos)
+    if (servo) servo->pause();
+}
+
+void libServo::resume_all_servos() {
+  for (auto& servo : servos)
+    if (servo) servo->resume();
+}
+
+void libServo::setInterruptPriority(uint32_t preemptPriority, uint32_t subPriority) {
+  servo_interrupt_priority = NVIC_EncodePriority(NVIC_GetPriorityGrouping(), preemptPriority, subPriority);
+}
+
+#endif // HAS_SERVOS
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/Servo.h

@@ -0,0 +1,53 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <Servo.h>
+
+#include "../../core/millis_t.h"
+
+// Inherit and expand on the official library
+class libServo {
+  public:
+    libServo();
+    int8_t attach(const int pin = 0); // pin == 0 uses value from previous call
+    int8_t attach(const int pin, const int min, const int max);
+    void detach() { stm32_servo.detach(); }
+    int read() { return stm32_servo.read(); }
+    void move(const int value);
+
+    void pause();
+    void resume();
+
+    static void pause_all_servos();
+    static void resume_all_servos();
+    static void setInterruptPriority(uint32_t preemptPriority, uint32_t subPriority);
+
+  private:
+    Servo stm32_servo;
+
+    int servo_pin = 0;
+    millis_t delay = 0;
+
+    bool was_attached_before_pause;
+    int value_before_pause;
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/eeprom_bl24cxx.cpp

@@ -0,0 +1,85 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(IIC_BL24CXX_EEPROM)
+
+#include "../shared/eeprom_if.h"
+#include "../shared/eeprom_api.h"
+
+//
+// PersistentStore
+//
+
+#ifndef MARLIN_EEPROM_SIZE
+  #error "MARLIN_EEPROM_SIZE is required for IIC_BL24CXX_EEPROM."
+#endif
+
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE; }
+
+bool PersistentStore::access_start()  { eeprom_init(); return true; }
+bool PersistentStore::access_finish() { return true; }
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+  uint16_t written = 0;
+  while (size--) {
+    uint8_t v = *value;
+    uint8_t * const p = (uint8_t * const)pos;
+    if (v != eeprom_read_byte(p)) { // EEPROM has only ~100,000 write cycles, so only write bytes that have changed!
+      eeprom_write_byte(p, v);
+      if (++written & 0x7F) delay(2); else safe_delay(2); // Avoid triggering watchdog during long EEPROM writes
+      if (eeprom_read_byte(p) != v) {
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
+        return true;
+      }
+    }
+    crc16(crc, &v, 1);
+    pos++;
+    value++;
+  }
+  return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  do {
+    uint8_t * const p = (uint8_t * const)pos;
+    uint8_t c = eeprom_read_byte(p);
+    if (writing) *value = c;
+    crc16(crc, &c, 1);
+    pos++;
+    value++;
+  } while (--size);
+  return false;
+}
+
+#endif // IIC_BL24CXX_EEPROM
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/eeprom_flash.cpp

@@ -0,0 +1,278 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(FLASH_EEPROM_EMULATION)
+
+#include "../shared/eeprom_api.h"
+
+// Better: "utility/stm32_eeprom.h", but only after updating stm32duino to 2.0.0
+// Use EEPROM.h for compatibility, for now.
+#include <EEPROM.h>
+
+/**
+ * The STM32 HAL supports chips that deal with "pages" and some with "sectors" and some that
+ * even have multiple "banks" of flash.
+ *
+ * This code is a bit of a mashup of
+ *   framework-arduinoststm32/cores/arduino/stm32/stm32_eeprom.c
+ *   hal/hal_lpc1768/persistent_store_flash.cpp
+ *
+ * This has only be written against those that use a single "sector" design.
+ *
+ * Those that deal with "pages" could be made to work. Looking at the STM32F07 for example, there are
+ * 128 "pages", each 2kB in size. If we continued with our EEPROM being 4Kb, we'd always need to operate
+ * on 2 of these pages. Each write, we'd use 2 different pages from a pool of pages until we are done.
+ */
+
+#if ENABLED(FLASH_EEPROM_LEVELING)
+
+  #include "stm32_def.h"
+
+  #define DEBUG_OUT ENABLED(EEPROM_CHITCHAT)
+  #include "../../core/debug_out.h"
+
+  #ifndef MARLIN_EEPROM_SIZE
+    #define MARLIN_EEPROM_SIZE    0x1000 // 4KB
+  #endif
+
+  #ifndef FLASH_SECTOR
+    #define FLASH_SECTOR          (FLASH_SECTOR_TOTAL - 1)
+  #endif
+  #ifndef FLASH_UNIT_SIZE
+    #define FLASH_UNIT_SIZE       0x20000 // 128kB
+  #endif
+
+  #ifndef FLASH_ADDRESS_START
+    #define FLASH_ADDRESS_START   (FLASH_END - ((FLASH_SECTOR_TOTAL - (FLASH_SECTOR)) * (FLASH_UNIT_SIZE)) + 1)
+  #endif
+  #define FLASH_ADDRESS_END       (FLASH_ADDRESS_START + FLASH_UNIT_SIZE  - 1)
+
+  #define EEPROM_SLOTS            ((FLASH_UNIT_SIZE) / (MARLIN_EEPROM_SIZE))
+  #define SLOT_ADDRESS(slot)      (FLASH_ADDRESS_START + (slot * (MARLIN_EEPROM_SIZE)))
+
+  #define UNLOCK_FLASH()          if (!flash_unlocked) { \
+                                    HAL_FLASH_Unlock(); \
+                                    __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | \
+                                                           FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR); \
+                                    flash_unlocked = true; \
+                                  }
+  #define LOCK_FLASH()            if (flash_unlocked) { HAL_FLASH_Lock(); flash_unlocked = false; }
+
+  #define EMPTY_UINT32            ((uint32_t)-1)
+  #define EMPTY_UINT8             ((uint8_t)-1)
+
+  static uint8_t ram_eeprom[MARLIN_EEPROM_SIZE] __attribute__((aligned(4))) = {0};
+  static int current_slot = -1;
+
+  static_assert(0 == MARLIN_EEPROM_SIZE % 4, "MARLIN_EEPROM_SIZE must be a multiple of 4"); // Ensure copying as uint32_t is safe
+  static_assert(0 == FLASH_UNIT_SIZE % MARLIN_EEPROM_SIZE, "MARLIN_EEPROM_SIZE must divide evenly into your FLASH_UNIT_SIZE");
+  static_assert(FLASH_UNIT_SIZE >= MARLIN_EEPROM_SIZE, "FLASH_UNIT_SIZE must be greater than or equal to your MARLIN_EEPROM_SIZE");
+  static_assert(IS_FLASH_SECTOR(FLASH_SECTOR), "FLASH_SECTOR is invalid");
+  static_assert(IS_POWER_OF_2(FLASH_UNIT_SIZE), "FLASH_UNIT_SIZE should be a power of 2, please check your chip's spec sheet");
+
+#endif // FLASH_EEPROM_LEVELING
+
+static bool eeprom_data_written = false;
+
+#ifndef MARLIN_EEPROM_SIZE
+  #define MARLIN_EEPROM_SIZE size_t(E2END + 1)
+#endif
+size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; }
+
+bool PersistentStore::access_start() {
+
+  EEPROM.begin(); // Avoid STM32 EEPROM.h warning (do nothing)
+
+  #if ENABLED(FLASH_EEPROM_LEVELING)
+
+    if (current_slot == -1 || eeprom_data_written) {
+      // This must be the first time since power on that we have accessed the storage, or someone
+      // loaded and called write_data and never called access_finish.
+      // Lets go looking for the slot that holds our configuration.
+      if (eeprom_data_written) DEBUG_ECHOLNPGM("Dangling EEPROM write_data");
+      uint32_t address = FLASH_ADDRESS_START;
+      while (address <= FLASH_ADDRESS_END) {
+        uint32_t address_value = (*(__IO uint32_t*)address);
+        if (address_value != EMPTY_UINT32) {
+          current_slot = (address - (FLASH_ADDRESS_START)) / (MARLIN_EEPROM_SIZE);
+          break;
+        }
+        address += sizeof(uint32_t);
+      }
+      if (current_slot == -1) {
+        // We didn't find anything, so we'll just initialize to empty
+        for (int i = 0; i < MARLIN_EEPROM_SIZE; i++) ram_eeprom[i] = EMPTY_UINT8;
+        current_slot = EEPROM_SLOTS;
+      }
+      else {
+        // load current settings
+        uint8_t *eeprom_data = (uint8_t *)SLOT_ADDRESS(current_slot);
+        for (int i = 0; i < MARLIN_EEPROM_SIZE; i++) ram_eeprom[i] = eeprom_data[i];
+        DEBUG_ECHOLNPGM("EEPROM loaded from slot ", current_slot, ".");
+      }
+      eeprom_data_written = false;
+    }
+
+  #else
+    eeprom_buffer_fill();
+  #endif
+
+  return true;
+}
+
+bool PersistentStore::access_finish() {
+
+  if (eeprom_data_written) {
+    #ifdef STM32F4xx
+      // MCU may come up with flash error bits which prevent some flash operations.
+      // Clear flags prior to flash operations to prevent errors.
+      __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
+    #endif
+
+    #if ENABLED(FLASH_EEPROM_LEVELING)
+
+      HAL_StatusTypeDef status = HAL_ERROR;
+      bool flash_unlocked = false;
+
+      if (--current_slot < 0) {
+        // all slots have been used, erase everything and start again
+
+        FLASH_EraseInitTypeDef EraseInitStruct;
+        uint32_t SectorError = 0;
+
+        EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
+        EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
+        EraseInitStruct.Sector = FLASH_SECTOR;
+        EraseInitStruct.NbSectors = 1;
+
+        current_slot = EEPROM_SLOTS - 1;
+        UNLOCK_FLASH();
+
+        TERN_(HAS_PAUSE_SERVO_OUTPUT, PAUSE_SERVO_OUTPUT());
+        hal.isr_off();
+        status = HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError);
+        hal.isr_on();
+        TERN_(HAS_PAUSE_SERVO_OUTPUT, RESUME_SERVO_OUTPUT());
+        if (status != HAL_OK) {
+          DEBUG_ECHOLNPGM("HAL_FLASHEx_Erase=", status);
+          DEBUG_ECHOLNPGM("GetError=", HAL_FLASH_GetError());
+          DEBUG_ECHOLNPGM("SectorError=", SectorError);
+          LOCK_FLASH();
+          return false;
+        }
+      }
+
+      UNLOCK_FLASH();
+
+      uint32_t offset = 0,
+               address = SLOT_ADDRESS(current_slot),
+               address_end = address + MARLIN_EEPROM_SIZE,
+               data = 0;
+
+      bool success = true;
+
+      while (address < address_end) {
+        memcpy(&data, ram_eeprom + offset, sizeof(data));
+        status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, address, data);
+        if (status == HAL_OK) {
+          address += sizeof(uint32_t);
+          offset += sizeof(uint32_t);
+        }
+        else {
+          DEBUG_ECHOLNPGM("HAL_FLASH_Program=", status);
+          DEBUG_ECHOLNPGM("GetError=", HAL_FLASH_GetError());
+          DEBUG_ECHOLNPGM("address=", address);
+          success = false;
+          break;
+        }
+      }
+
+      LOCK_FLASH();
+
+      if (success) {
+        eeprom_data_written = false;
+        DEBUG_ECHOLNPGM("EEPROM saved to slot ", current_slot, ".");
+      }
+
+      return success;
+
+    #else // !FLASH_EEPROM_LEVELING
+
+      // The following was written for the STM32F4 but may work with other MCUs as well.
+      // Most STM32F4 flash does not allow reading from flash during erase operations.
+      // This takes about a second on a STM32F407 with a 128kB sector used as EEPROM.
+      // Interrupts during this time can have unpredictable results, such as killing Servo
+      // output. Servo output still glitches with interrupts disabled, but recovers after the
+      // erase.
+      TERN_(HAS_PAUSE_SERVO_OUTPUT, PAUSE_SERVO_OUTPUT());
+      hal.isr_off();
+      eeprom_buffer_flush();
+      hal.isr_on();
+      TERN_(HAS_PAUSE_SERVO_OUTPUT, RESUME_SERVO_OUTPUT());
+
+      eeprom_data_written = false;
+
+    #endif // !FLASH_EEPROM_LEVELING
+  }
+
+  return true;
+}
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+  while (size--) {
+    uint8_t v = *value;
+    #if ENABLED(FLASH_EEPROM_LEVELING)
+      if (v != ram_eeprom[pos]) {
+        ram_eeprom[pos] = v;
+        eeprom_data_written = true;
+      }
+    #else
+      if (v != eeprom_buffered_read_byte(pos)) {
+        eeprom_buffered_write_byte(pos, v);
+        eeprom_data_written = true;
+      }
+    #endif
+    crc16(crc, &v, 1);
+    pos++;
+    value++;
+  }
+  return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  do {
+    const uint8_t c = TERN(FLASH_EEPROM_LEVELING, ram_eeprom[pos], eeprom_buffered_read_byte(pos));
+    if (writing) *value = c;
+    crc16(crc, &c, 1);
+    pos++;
+    value++;
+  } while (--size);
+  return false;
+}
+
+#endif // FLASH_EEPROM_EMULATION
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/eeprom_if_iic.cpp

@@ -0,0 +1,56 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+/**
+ * Platform-independent Arduino functions for I2C EEPROM.
+ * Enable USE_SHARED_EEPROM if not supplied by the framework.
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(IIC_BL24CXX_EEPROM)
+
+#include "../../libs/BL24CXX.h"
+#include "../shared/eeprom_if.h"
+
+void eeprom_init() { BL24CXX::init(); }
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void eeprom_write_byte(uint8_t *pos, uint8_t value) {
+  const unsigned eeprom_address = (unsigned)pos;
+  return BL24CXX::writeOneByte(eeprom_address, value);
+}
+
+uint8_t eeprom_read_byte(uint8_t *pos) {
+  const unsigned eeprom_address = (unsigned)pos;
+  return BL24CXX::readOneByte(eeprom_address);
+}
+
+#endif // IIC_BL24CXX_EEPROM
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/eeprom_sdcard.cpp

@@ -0,0 +1,94 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+/**
+ * Implementation of EEPROM settings in SD Card
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(SDCARD_EEPROM_EMULATION)
+
+#include "../shared/eeprom_api.h"
+#include "../../sd/cardreader.h"
+
+#define EEPROM_FILENAME "eeprom.dat"
+
+#ifndef MARLIN_EEPROM_SIZE
+  #define MARLIN_EEPROM_SIZE 0x1000 // 4KB
+#endif
+size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; }
+
+#define _ALIGN(x) __attribute__ ((aligned(x)))
+static char _ALIGN(4) HAL_eeprom_data[MARLIN_EEPROM_SIZE];
+
+bool PersistentStore::access_start() {
+  if (!card.isMounted()) return false;
+
+  MediaFile file, root = card.getroot();
+  if (!file.open(&root, EEPROM_FILENAME, O_RDONLY))
+    return true;
+
+  int bytes_read = file.read(HAL_eeprom_data, MARLIN_EEPROM_SIZE);
+  if (bytes_read < 0) return false;
+  for (; bytes_read < MARLIN_EEPROM_SIZE; bytes_read++)
+    HAL_eeprom_data[bytes_read] = 0xFF;
+  file.close();
+  return true;
+}
+
+bool PersistentStore::access_finish() {
+  if (!card.isMounted()) return false;
+
+  MediaFile file, root = card.getroot();
+  int bytes_written = 0;
+  if (file.open(&root, EEPROM_FILENAME, O_CREAT | O_WRITE | O_TRUNC)) {
+    bytes_written = file.write(HAL_eeprom_data, MARLIN_EEPROM_SIZE);
+    file.close();
+  }
+  return (bytes_written == MARLIN_EEPROM_SIZE);
+}
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+  for (size_t i = 0; i < size; i++)
+    HAL_eeprom_data[pos + i] = value[i];
+  crc16(crc, value, size);
+  pos += size;
+  return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, const size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  for (size_t i = 0; i < size; i++) {
+    uint8_t c = HAL_eeprom_data[pos + i];
+    if (writing) value[i] = c;
+    crc16(crc, &c, 1);
+  }
+  pos += size;
+  return false;
+}
+
+#endif // SDCARD_EEPROM_EMULATION
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/eeprom_sram.cpp

@@ -0,0 +1,69 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(SRAM_EEPROM_EMULATION)
+
+#include "../shared/eeprom_if.h"
+#include "../shared/eeprom_api.h"
+
+#ifndef MARLIN_EEPROM_SIZE
+  #define MARLIN_EEPROM_SIZE 0x1000 // 4KB
+#endif
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE; }
+
+bool PersistentStore::access_start()  { return true; }
+bool PersistentStore::access_finish() { return true; }
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+  while (size--) {
+    uint8_t v = *value;
+
+    // Save to Backup SRAM
+    *(__IO uint8_t *)(BKPSRAM_BASE + (uint8_t * const)pos) = v;
+
+    crc16(crc, &v, 1);
+    pos++;
+    value++;
+  };
+
+  return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  do {
+    // Read from either external EEPROM, program flash or Backup SRAM
+    const uint8_t c = ( *(__IO uint8_t *)(BKPSRAM_BASE + ((uint8_t*)pos)) );
+    if (writing) *value = c;
+    crc16(crc, &c, 1);
+    pos++;
+    value++;
+  } while (--size);
+  return false;
+}
+
+#endif // SRAM_EEPROM_EMULATION
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/eeprom_wired.cpp

@@ -0,0 +1,79 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#if USE_WIRED_EEPROM
+
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
+
+#include "../shared/eeprom_if.h"
+#include "../shared/eeprom_api.h"
+
+#ifndef MARLIN_EEPROM_SIZE
+  #define MARLIN_EEPROM_SIZE size_t(E2END + 1)
+#endif
+size_t PersistentStore::capacity() { return MARLIN_EEPROM_SIZE; }
+
+bool PersistentStore::access_start()  { eeprom_init(); return true; }
+bool PersistentStore::access_finish() { return true; }
+
+bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
+  uint16_t written = 0;
+  while (size--) {
+    uint8_t v = *value;
+    uint8_t * const p = (uint8_t * const)pos;
+    if (v != eeprom_read_byte(p)) { // EEPROM has only ~100,000 write cycles, so only write bytes that have changed!
+      eeprom_write_byte(p, v);
+      if (++written & 0x7F) delay(2); else safe_delay(2); // Avoid triggering watchdog during long EEPROM writes
+      if (eeprom_read_byte(p) != v) {
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
+        return true;
+      }
+    }
+    crc16(crc, &v, 1);
+    pos++;
+    value++;
+  }
+  return false;
+}
+
+bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
+  do {
+    // Read from either external EEPROM, program flash or Backup SRAM
+    const uint8_t c = eeprom_read_byte((uint8_t*)pos);
+    if (writing) *value = c;
+    crc16(crc, &c, 1);
+    pos++;
+    value++;
+  } while (--size);
+  return false;
+}
+
+#endif // USE_WIRED_EEPROM
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/endstop_interrupts.h

@@ -0,0 +1,60 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../module/endstops.h"
+
+// One ISR for all EXT-Interrupts
+void endstop_ISR() { endstops.update(); }
+
+void setup_endstop_interrupts() {
+  #define _ATTACH(P) attachInterrupt(P, endstop_ISR, CHANGE)
+  TERN_(USE_X_MAX, _ATTACH(X_MAX_PIN));
+  TERN_(USE_X_MIN, _ATTACH(X_MIN_PIN));
+  TERN_(USE_Y_MAX, _ATTACH(Y_MAX_PIN));
+  TERN_(USE_Y_MIN, _ATTACH(Y_MIN_PIN));
+  TERN_(USE_Z_MAX, _ATTACH(Z_MAX_PIN));
+  TERN_(USE_Z_MIN, _ATTACH(Z_MIN_PIN));
+  TERN_(USE_X2_MAX, _ATTACH(X2_MAX_PIN));
+  TERN_(USE_X2_MIN, _ATTACH(X2_MIN_PIN));
+  TERN_(USE_Y2_MAX, _ATTACH(Y2_MAX_PIN));
+  TERN_(USE_Y2_MIN, _ATTACH(Y2_MIN_PIN));
+  TERN_(USE_Z2_MAX, _ATTACH(Z2_MAX_PIN));
+  TERN_(USE_Z2_MIN, _ATTACH(Z2_MIN_PIN));
+  TERN_(USE_Z3_MAX, _ATTACH(Z3_MAX_PIN));
+  TERN_(USE_Z3_MIN, _ATTACH(Z3_MIN_PIN));
+  TERN_(USE_Z4_MAX, _ATTACH(Z4_MAX_PIN));
+  TERN_(USE_Z4_MIN, _ATTACH(Z4_MIN_PIN));
+  TERN_(HAS_Z_MIN_PROBE_PIN, _ATTACH(Z_MIN_PROBE_PIN));
+  TERN_(USE_I_MAX, _ATTACH(I_MAX_PIN));
+  TERN_(USE_I_MIN, _ATTACH(I_MIN_PIN));
+  TERN_(USE_J_MAX, _ATTACH(J_MAX_PIN));
+  TERN_(USE_J_MIN, _ATTACH(J_MIN_PIN));
+  TERN_(USE_K_MAX, _ATTACH(K_MAX_PIN));
+  TERN_(USE_K_MIN, _ATTACH(K_MIN_PIN));
+  TERN_(USE_U_MAX, _ATTACH(U_MAX_PIN));
+  TERN_(USE_U_MIN, _ATTACH(U_MIN_PIN));
+  TERN_(USE_V_MAX, _ATTACH(V_MAX_PIN));
+  TERN_(USE_V_MIN, _ATTACH(V_MIN_PIN));
+  TERN_(USE_W_MAX, _ATTACH(W_MAX_PIN));
+  TERN_(USE_W_MIN, _ATTACH(W_MIN_PIN));
+}

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/fast_pwm.cpp

@@ -0,0 +1,88 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+// Array to support sticky frequency sets per timer
+static uint16_t timer_freq[TIMER_NUM];
+
+void MarlinHAL::set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
+  const uint16_t duty = invert ? v_size - v : v;
+  if (PWM_PIN(pin)) {
+    const PinName pin_name = digitalPinToPinName(pin);
+    TIM_TypeDef * const Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM);
+
+    const timer_index_t index = get_timer_index(Instance);
+    const bool needs_freq = (HardwareTimer_Handle[index] == nullptr);
+    if (needs_freq) // A new instance must be set to the default frequency of PWM_FREQUENCY
+      HardwareTimer_Handle[index]->__this = new HardwareTimer((TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM));
+
+    HardwareTimer * const HT = (HardwareTimer *)(HardwareTimer_Handle[index]->__this);
+    const uint32_t channel = STM_PIN_CHANNEL(pinmap_function(pin_name, PinMap_PWM));
+    const TimerModes_t previousMode = HT->getMode(channel);
+    if (previousMode != TIMER_OUTPUT_COMPARE_PWM1)
+      HT->setMode(channel, TIMER_OUTPUT_COMPARE_PWM1, pin);
+
+    if (needs_freq && timer_freq[index] == 0)     // If the timer is unconfigured and no freq is set then default PWM_FREQUENCY
+      set_pwm_frequency(pin_name, PWM_FREQUENCY); // Set the frequency and save the value to the assigned index no.
+
+    // Note the resolution is sticky here, the input can be upto 16 bits and that would require RESOLUTION_16B_COMPARE_FORMAT (16)
+    // If such a need were to manifest then we would need to calc the resolution based on the v_size parameter and add code for it.
+    HT->setCaptureCompare(channel, duty, RESOLUTION_8B_COMPARE_FORMAT); // Set the duty, the calc is done in the library :)
+    pinmap_pinout(pin_name, PinMap_PWM); // Make sure the pin output state is set.
+    if (previousMode != TIMER_OUTPUT_COMPARE_PWM1) HT->resume();
+  }
+  else {
+    pinMode(pin, OUTPUT);
+    digitalWrite(pin, duty < v_size / 2 ? LOW : HIGH);
+  }
+}
+
+void MarlinHAL::set_pwm_frequency(const pin_t pin, const uint16_t f_desired) {
+  if (!PWM_PIN(pin)) return; // Don't proceed if no hardware timer
+  const PinName pin_name = digitalPinToPinName(pin);
+  TIM_TypeDef * const Instance = (TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM); // Get HAL timer instance
+  const timer_index_t index = get_timer_index(Instance);
+
+  // Protect used timers.
+  #ifdef STEP_TIMER
+    if (index == TIMER_INDEX(STEP_TIMER)) return;
+  #endif
+  #ifdef TEMP_TIMER
+    if (index == TIMER_INDEX(TEMP_TIMER)) return;
+  #endif
+  #if defined(PULSE_TIMER) && MF_TIMER_PULSE != MF_TIMER_STEP
+    if (index == TIMER_INDEX(PULSE_TIMER)) return;
+  #endif
+
+  if (HardwareTimer_Handle[index] == nullptr) // If frequency is set before duty we need to create a handle here.
+    HardwareTimer_Handle[index]->__this = new HardwareTimer((TIM_TypeDef *)pinmap_peripheral(pin_name, PinMap_PWM));
+  HardwareTimer * const HT = (HardwareTimer *)(HardwareTimer_Handle[index]->__this);
+  HT->setOverflow(f_desired, HERTZ_FORMAT);
+  timer_freq[index] = f_desired; // Save the last frequency so duty will not set the default for this timer number.
+}
+
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/fastio.cpp

@@ -0,0 +1,35 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+GPIO_TypeDef* FastIOPortMap[LastPort + 1] = { 0 };
+
+void FastIO_init() {
+  for (uint8_t i = 0; i < NUM_DIGITAL_PINS; ++i)
+    FastIOPortMap[STM_PORT(digitalPin[i])] = get_GPIO_Port(STM_PORT(digitalPin[i]));
+}
+
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/fastio.h

@@ -0,0 +1,90 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * Fast I/O interfaces for STM32
+ * These use GPIO register access for fast port manipulation.
+ */
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+extern GPIO_TypeDef * FastIOPortMap[];
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void FastIO_init(); // Must be called before using fast io macros
+#define FASTIO_INIT() FastIO_init()
+
+// ------------------------
+// Defines
+// ------------------------
+
+#define _BV32(b) (1UL << (b))
+
+#ifndef PWM
+  #define PWM OUTPUT
+#endif
+
+#if defined(STM32F0xx) || defined(STM32F1xx) || defined(STM32F3xx) || defined(STM32L0xx) || defined(STM32L4xx)
+  #define _WRITE(IO, V) do { \
+    if (V) FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->BSRR = _BV32(STM_PIN(digitalPinToPinName(IO))) ; \
+    else   FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->BRR  = _BV32(STM_PIN(digitalPinToPinName(IO))) ; \
+  }while(0)
+#else
+  #define _WRITE(IO, V) (FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->BSRR = _BV32(STM_PIN(digitalPinToPinName(IO)) + ((V) ? 0 : 16)))
+#endif
+
+#define _READ(IO)               bool(READ_BIT(FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->IDR, _BV32(STM_PIN(digitalPinToPinName(IO)))))
+#define _TOGGLE(IO)             TBI32(FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->ODR, STM_PIN(digitalPinToPinName(IO)))
+
+#define _GET_MODE(IO)
+#define _SET_MODE(IO,M)         pinMode(IO, M)
+#define _SET_OUTPUT(IO)         pinMode(IO, OUTPUT)                               //!< Output Push Pull Mode & GPIO_NOPULL
+#define _SET_OUTPUT_OD(IO)      pinMode(IO, OUTPUT_OPEN_DRAIN)
+
+#define WRITE(IO,V)             _WRITE(IO,V)
+#define READ(IO)                _READ(IO)
+#define TOGGLE(IO)              _TOGGLE(IO)
+
+#define OUT_WRITE(IO,V)         do{ _SET_OUTPUT(IO); WRITE(IO,V); }while(0)
+#define OUT_WRITE_OD(IO,V)      do{ _SET_OUTPUT_OD(IO); WRITE(IO,V); }while(0)
+
+#define SET_INPUT(IO)           _SET_MODE(IO, INPUT)                              //!< Input Floating Mode
+#define SET_INPUT_PULLUP(IO)    _SET_MODE(IO, INPUT_PULLUP)                       //!< Input with Pull-up activation
+#define SET_INPUT_PULLDOWN(IO)  _SET_MODE(IO, INPUT_PULLDOWN)                     //!< Input with Pull-down activation
+#define SET_OUTPUT(IO)          OUT_WRITE(IO, LOW)
+#define SET_PWM(IO)             _SET_MODE(IO, PWM)
+
+#define IS_INPUT(IO)
+#define IS_OUTPUT(IO)
+
+#define PWM_PIN(P)              digitalPinHasPWM(P)
+#define NO_COMPILE_TIME_PWM
+
+// digitalRead/Write wrappers
+#define extDigitalRead(IO)    digitalRead(IO)
+#define extDigitalWrite(IO,V) digitalWrite(IO,V)

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/inc/Conditionals_LCD.h

@@ -0,0 +1,22 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/inc/Conditionals_adv.h

@@ -0,0 +1,35 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#if ALL(HAS_MEDIA, USBD_USE_CDC_MSC) && DISABLED(NO_SD_HOST_DRIVE)
+  #define HAS_SD_HOST_DRIVE 1
+#endif
+
+// Fix F_CPU not being a compile-time constant in STSTM32 framework
+#ifdef BOARD_F_CPU
+  #undef F_CPU
+  #define F_CPU BOARD_F_CPU
+#endif
+
+// The Sensitive Pins array is not optimizable
+#define RUNTIME_ONLY_ANALOG_TO_DIGITAL

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/inc/Conditionals_post.h

@@ -0,0 +1,34 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+// If no real or emulated EEPROM selected, fall back to SD emulation
+#if USE_FALLBACK_EEPROM
+  #define SDCARD_EEPROM_EMULATION
+#elif ANY(I2C_EEPROM, SPI_EEPROM)
+  #define USE_SHARED_EEPROM 1
+#endif
+
+// Some STM32F4 boards may lose steps when saving to EEPROM during print (PR #17946)
+#if defined(STM32F4xx) && ENABLED(FLASH_EEPROM_EMULATION) && PRINTCOUNTER_SAVE_INTERVAL > 0
+  #define PRINTCOUNTER_SYNC
+#endif

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/inc/SanityCheck.h

@@ -0,0 +1,110 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * Test STM32-specific configuration values for errors at compile-time.
+ */
+//#if ENABLED(SPINDLE_LASER_USE_PWM) && !(SPINDLE_LASER_PWM_PIN == 4 || SPINDLE_LASER_PWM_PIN == 6 || SPINDLE_LASER_PWM_PIN == 11)
+//  #error "SPINDLE_LASER_PWM_PIN must use SERVO0, SERVO1 or SERVO3 connector"
+//#endif
+
+#if ENABLED(SDCARD_EEPROM_EMULATION) && !HAS_MEDIA
+  #undef SDCARD_EEPROM_EMULATION // Avoid additional error noise
+  #if USE_FALLBACK_EEPROM
+    #warning "EEPROM type not specified. Fallback is SDCARD_EEPROM_EMULATION."
+  #endif
+  #error "SDCARD_EEPROM_EMULATION requires SDSUPPORT. Enable SDSUPPORT or choose another EEPROM emulation."
+#endif
+
+#if !defined(STM32F4xx) && ENABLED(FLASH_EEPROM_LEVELING)
+  #error "FLASH_EEPROM_LEVELING is currently only supported on STM32F4 hardware."
+#endif
+
+#if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
+  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on STM32."
+#elif ENABLED(SERIAL_STATS_DROPPED_RX)
+  #error "SERIAL_STATS_DROPPED_RX is not supported on STM32."
+#endif
+
+#if ANY(TFT_COLOR_UI, TFT_LVGL_UI, TFT_CLASSIC_UI) && NOT_TARGET(STM32H7xx, STM32F4xx, STM32F1xx)
+  #error "TFT_COLOR_UI, TFT_LVGL_UI and TFT_CLASSIC_UI are currently only supported on STM32H7, STM32F4 and STM32F1 hardware."
+#endif
+
+/**
+ * Check for common serial pin conflicts
+ */
+#define _CHECK_SERIAL_PIN(N) (( \
+    BTN_EN1 == N || DOGLCD_CS == N || HEATER_BED_PIN == N || FAN0_PIN == N || \
+    SDIO_D2_PIN == N || SDIO_D3_PIN == N || SDIO_CK_PIN == N || SDIO_CMD_PIN == N \
+  ))
+#define CHECK_SERIAL_PIN(T,N) defined(UART##N##_##T##_PIN) && _CHECK_SERIAL_PIN(UART##N##_##T##_PIN)
+#if SERIAL_IN_USE(1)
+  #if CHECK_SERIAL_PIN(TX,1)
+    #error "Serial Port 1 TX IO pins conflict with another pin on the board."
+  #endif
+  #if CHECK_SERIAL_PIN(RX,1)
+    #error "Serial Port 1 RX IO pins conflict with another pin on the board."
+  #endif
+#endif
+#if SERIAL_IN_USE(2)
+  #if CHECK_SERIAL_PIN(TX,2)
+    #error "Serial Port 2 TX IO pins conflict with another pin on the board."
+  #endif
+  #if CHECK_SERIAL_PIN(RX,2)
+    #error "Serial Port 2 RX IO pins conflict with another pin on the board."
+  #endif
+#endif
+#if SERIAL_IN_USE(3)
+  #if CHECK_SERIAL_PIN(TX,3)
+    #error "Serial Port 3 TX IO pins conflict with another pin on the board."
+  #endif
+  #if CHECK_SERIAL_PIN(RX,3)
+    #error "Serial Port 3 RX IO pins conflict with another pin on the board."
+  #endif
+#endif
+#if SERIAL_IN_USE(4)
+  #if CHECK_SERIAL_PIN(TX,4)
+    #error "Serial Port 4 TX IO pins conflict with another pin on the board."
+  #endif
+  #if CHECK_SERIAL_PIN(RX,4)
+    #error "Serial Port 4 RX IO pins conflict with another pin on the board."
+  #endif
+#endif
+#if SERIAL_IN_USE(5)
+  #if CHECK_SERIAL_PIN(TX,5)
+    #error "Serial Port 5 TX IO pins conflict with another pin on the board."
+  #endif
+  #if CHECK_SERIAL_PIN(RX,5)
+    #error "Serial Port 5 RX IO pins conflict with another pin on the board."
+  #endif
+#endif
+#if SERIAL_IN_USE(6)
+  #if CHECK_SERIAL_PIN(TX,6)
+    #error "Serial Port 6 TX IO pins conflict with another pin on the board."
+  #endif
+  #if CHECK_SERIAL_PIN(RX,6)
+    #error "Serial Port 6 RX IO pins conflict with another pin on the board."
+  #endif
+#endif
+#undef CHECK_SERIAL_PIN
+#undef _CHECK_SERIAL_PIN

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/msc_sd.cpp

@@ -0,0 +1,161 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 BigTreeTech [https://github.com/bigtreetech]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if HAS_SD_HOST_DRIVE
+
+#include "../shared/Marduino.h"
+#include "msc_sd.h"
+#include "usbd_core.h"
+
+#include "../../sd/cardreader.h"
+
+#include <USB.h>
+#include <USBMscHandler.h>
+
+#define BLOCK_SIZE 512
+#define PRODUCT_ID 0x29
+
+#ifndef SD_MULTIBLOCK_RETRY_CNT
+  #define SD_MULTIBLOCK_RETRY_CNT 1
+#elif SD_MULTIBLOCK_RETRY_CNT < 1
+  #error "SD_MULTIBLOCK_RETRY_CNT must be greater than or equal to 1."
+#endif
+
+class Sd2CardUSBMscHandler : public USBMscHandler {
+public:
+  DiskIODriver* diskIODriver() {
+    #if ENABLED(MULTI_VOLUME)
+      #if SHARED_VOLUME_IS(SD_ONBOARD)
+        return &card.media_driver_sdcard;
+      #elif SHARED_VOLUME_IS(USB_FLASH_DRIVE)
+        return &card.media_driver_usbFlash;
+      #endif
+    #else
+      return card.diskIODriver();
+    #endif
+  }
+
+  bool GetCapacity(uint32_t *pBlockNum, uint16_t *pBlockSize) {
+    *pBlockNum = diskIODriver()->cardSize();
+    *pBlockSize = BLOCK_SIZE;
+    return true;
+  }
+
+  bool Write(uint8_t *pBuf, uint32_t blkAddr, uint16_t blkLen) {
+    auto sd2card = diskIODriver();
+    // single block
+    if (blkLen == 1) {
+      hal.watchdog_refresh();
+      return sd2card->writeBlock(blkAddr, pBuf);
+    }
+
+    // multi block optimization
+    bool done = false;
+    for (uint16_t rcount = SD_MULTIBLOCK_RETRY_CNT; !done && rcount--;) {
+      uint8_t *cBuf = pBuf;
+      sd2card->writeStart(blkAddr, blkLen);
+      bool okay = true;                   // Assume success
+      for (uint32_t i = blkLen; i--;) {
+        hal.watchdog_refresh();
+        if (!sd2card->writeData(cBuf)) {  // Write. Did it fail?
+          sd2card->writeStop();           // writeStop for new writeStart
+          okay = false;                   // Failed, so retry
+          break;                          // Go to while... below
+        }
+        cBuf += BLOCK_SIZE;
+      }
+      done = okay;                        // Done if no error occurred
+    }
+
+    if (done) sd2card->writeStop();
+    return done;
+  }
+
+  bool Read(uint8_t *pBuf, uint32_t blkAddr, uint16_t blkLen) {
+    auto sd2card = diskIODriver();
+    // single block
+    if (blkLen == 1) {
+      hal.watchdog_refresh();
+      return sd2card->readBlock(blkAddr, pBuf);
+    }
+
+    // multi block optimization
+    bool done = false;
+    for (uint16_t rcount = SD_MULTIBLOCK_RETRY_CNT; !done && rcount--;) {
+      uint8_t *cBuf = pBuf;
+      sd2card->readStart(blkAddr);
+      bool okay = true;                   // Assume success
+      for (uint32_t i = blkLen; i--;) {
+        hal.watchdog_refresh();
+        if (!sd2card->readData(cBuf)) {   // Read. Did it fail?
+          sd2card->readStop();            // readStop for new readStart
+          okay = false;                   // Failed, so retry
+          break;                          // Go to while... below
+        }
+        cBuf += BLOCK_SIZE;
+      }
+      done = okay;                        // Done if no error occurred
+    }
+
+    if (done) sd2card->readStop();
+    return done;
+  }
+
+  bool IsReady() { return diskIODriver()->isReady(); }
+};
+
+Sd2CardUSBMscHandler usbMscHandler;
+
+/* USB Mass storage Standard Inquiry Data */
+uint8_t  Marlin_STORAGE_Inquirydata[] = { /* 36 */
+  /* LUN 0 */
+  0x00,
+  0x80,
+  0x02,
+  0x02,
+  (STANDARD_INQUIRY_DATA_LEN - 5),
+  0x00,
+  0x00,
+  0x00,
+  'M', 'A', 'R', 'L', 'I', 'N', ' ', ' ', /* Manufacturer : 8 bytes */
+  'P', 'r', 'o', 'd', 'u', 'c', 't', ' ', /* Product      : 16 Bytes */
+  ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
+  '0', '.', '0', '1',                     /* Version      : 4 Bytes */
+};
+
+USBMscHandler *pSingleMscHandler = &usbMscHandler;
+
+void MSC_SD_init() {
+  USBDevice.end();
+  delay(200);
+  USBDevice.registerMscHandlers(1, &pSingleMscHandler, Marlin_STORAGE_Inquirydata);
+  USBDevice.begin();
+}
+
+#endif // HAS_SD_HOST_DRIVE
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/msc_sd.h

@@ -0,0 +1,25 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 BigTreeTech [https://github.com/bigtreetech]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+void MSC_SD_init();

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/pinsDebug.h

@@ -0,0 +1,288 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <Arduino.h>
+
+#ifndef NUM_DIGITAL_PINS
+   // Only in ST's Arduino core (STM32duino, STM32Core)
+   #error "Expected NUM_DIGITAL_PINS not found"
+#endif
+
+/**
+ *  Life gets complicated if you want an easy to use 'M43 I' output (in port/pin order)
+ *  because the variants in this platform do not always define all the I/O port/pins
+ *  that a CPU has.
+ *
+ *  VARIABLES:
+ *     Ard_num - Arduino pin number - defined by the platform. It is used by digitalRead and
+ *               digitalWrite commands and by M42.
+ *             - does not contain port/pin info
+ *             - is not in port/pin order
+ *             - typically a variant will only assign Ard_num to port/pins that are actually used
+ *     Index - M43 counter - only used to get Ard_num
+ *     x - a parameter/argument used to search the pin_array to try to find a signal name
+ *         associated with a Ard_num
+ *     Port_pin - port number and pin number for use with CPU registers and printing reports
+ *
+ *  Since M43 uses digitalRead and digitalWrite commands, only the Port_pins with an Ard_num
+ *  are accessed and/or displayed.
+ *
+ *  Three arrays are used.
+ *
+ *  digitalPin[] is provided by the platform.  It consists of the Port_pin numbers in
+ *  Arduino pin number order.
+ *
+ *  pin_array is a structure generated by the pins/pinsDebug.h header file.  It is generated by
+ *  the preprocessor. Only the signals associated with enabled options are in this table.
+ *  It contains:
+ *    - name of the signal
+ *    - the Ard_num assigned by the pins_YOUR_BOARD.h file using the platform defines.
+ *        EXAMPLE:  "#define KILL_PIN  PB1" results in Ard_num of 57.  57 is then used as the
+ *                  argument to digitalPinToPinName(IO) to get the Port_pin number
+ *    - if it is a digital or analog signal.  PWMs are considered digital here.
+ *
+ *  pin_xref is a structure generated by this header file.  It is generated by the
+ *  preprocessor. It is in port/pin order.  It contains just the port/pin numbers defined by the
+ *  platform for this variant.
+ *    - Ard_num
+ *    - printable version of Port_pin
+ *
+ *  Routines with an "x" as a parameter/argument are used to search the pin_array to try to
+ *  find a signal name associated with a port/pin.
+ *
+ *  NOTE -  the Arduino pin number is what is used by the M42 command, NOT the port/pin for that
+ *          signal.  The Arduino pin number is listed by the M43 I command.
+ */
+
+////////////////////////////////////////////////////////
+//
+// make a list of the Arduino pin numbers in the Port/Pin order
+//
+
+#define _PIN_ADD(NAME_ALPHA, ARDUINO_NUM) { NAME_ALPHA, ARDUINO_NUM },
+#define PIN_ADD(NAME) _PIN_ADD(#NAME, NAME)
+
+typedef struct {
+  char Port_pin_alpha[5];
+  pin_t Ard_num;
+} XrefInfo;
+
+const XrefInfo pin_xref[] PROGMEM = {
+  #include "pins_Xref.h"
+};
+
+////////////////////////////////////////////////////////////
+
+#define MODE_PIN_INPUT  0 // Input mode (reset state)
+#define MODE_PIN_OUTPUT 1 // General purpose output mode
+#define MODE_PIN_ALT    2 // Alternate function mode
+#define MODE_PIN_ANALOG 3 // Analog mode
+
+#define PIN_NUM(P) (P & 0x000F)
+#define PIN_NUM_ALPHA_LEFT(P) (((P & 0x000F) < 10) ? ('0' + (P & 0x000F)) : '1')
+#define PIN_NUM_ALPHA_RIGHT(P) (((P & 0x000F) > 9)  ? ('0' + (P & 0x000F) - 10) : 0 )
+#define PORT_NUM(P) ((P  >> 4) & 0x0007)
+#define PORT_ALPHA(P) ('A' + (P >> 4))
+
+/**
+ * Translation of routines & variables used by pinsDebug.h
+ */
+
+#if NUM_ANALOG_FIRST >= NUM_DIGITAL_PINS
+  #define HAS_HIGH_ANALOG_PINS 1
+#endif
+#ifndef NUM_ANALOG_LAST
+  #define NUM_ANALOG_LAST ((NUM_ANALOG_FIRST) + (NUM_ANALOG_INPUTS) - 1)
+#endif
+#define NUMBER_PINS_TOTAL ((NUM_DIGITAL_PINS) + TERN0(HAS_HIGH_ANALOG_PINS, NUM_ANALOG_INPUTS))
+#define VALID_PIN(P) (WITHIN(P, 0, (NUM_DIGITAL_PINS) - 1) || TERN0(HAS_HIGH_ANALOG_PINS, WITHIN(P, NUM_ANALOG_FIRST, NUM_ANALOG_LAST)))
+#define digitalRead_mod(Ard_num) extDigitalRead(Ard_num)  // must use Arduino pin numbers when doing reads
+#define PRINT_PIN(Q)
+#define PRINT_PIN_ANALOG(p) do{ sprintf_P(buffer, PSTR(" (A%2d)  "), DIGITAL_PIN_TO_ANALOG_PIN(pin)); SERIAL_ECHO(buffer); }while(0)
+#define DIGITAL_PIN_TO_ANALOG_PIN(ANUM) -1  // will report analog pin number in the print port routine
+
+// x is a variable used to search pin_array
+#define GET_ARRAY_IS_DIGITAL(x) ((bool) pin_array[x].is_digital)
+#define GET_ARRAY_PIN(x) ((pin_t) pin_array[x].pin)
+#define PRINT_ARRAY_NAME(x) do{ sprintf_P(buffer, PSTR("%-" STRINGIFY(MAX_NAME_LENGTH) "s"), pin_array[x].name); SERIAL_ECHO(buffer); }while(0)
+#define MULTI_NAME_PAD 33 // space needed to be pretty if not first name assigned to a pin
+
+//
+// Pin Mapping for M43
+//
+#define GET_PIN_MAP_PIN_M43(Index) pin_xref[Index].Ard_num
+
+#ifndef M43_NEVER_TOUCH
+  #define _M43_NEVER_TOUCH(Index) (Index >= 9 && Index <= 12) // SERIAL/USB pins: PA9(TX) PA10(RX) PA11(USB_DM) PA12(USB_DP)
+  #ifdef KILL_PIN
+    #define M43_NEVER_TOUCH(Index) m43_never_touch(Index)
+
+    bool m43_never_touch(const pin_t Index) {
+      static pin_t M43_kill_index = -1;
+      if (M43_kill_index < 0)
+        for (M43_kill_index = 0; M43_kill_index < NUMBER_PINS_TOTAL; M43_kill_index++)
+          if (KILL_PIN == GET_PIN_MAP_PIN_M43(M43_kill_index)) break;
+      return _M43_NEVER_TOUCH(Index) || Index == M43_kill_index; // KILL_PIN and SERIAL/USB
+    }
+  #else
+    #define M43_NEVER_TOUCH(Index) _M43_NEVER_TOUCH(Index)
+  #endif
+#endif
+
+uint8_t get_pin_mode(const pin_t Ard_num) {
+  const PinName dp = digitalPinToPinName(Ard_num);
+  uint32_t ll_pin  = STM_LL_GPIO_PIN(dp);
+  GPIO_TypeDef *port = get_GPIO_Port(STM_PORT(dp));
+  uint32_t mode = LL_GPIO_GetPinMode(port, ll_pin);
+  switch (mode) {
+    case LL_GPIO_MODE_ANALOG: return MODE_PIN_ANALOG;
+    case LL_GPIO_MODE_INPUT: return MODE_PIN_INPUT;
+    case LL_GPIO_MODE_OUTPUT: return MODE_PIN_OUTPUT;
+    case LL_GPIO_MODE_ALTERNATE: return MODE_PIN_ALT;
+    TERN_(STM32F1xx, case LL_GPIO_MODE_FLOATING:)
+    default: return 0;
+  }
+}
+
+bool GET_PINMODE(const pin_t Ard_num) {
+  const uint8_t pin_mode = get_pin_mode(Ard_num);
+  return pin_mode == MODE_PIN_OUTPUT || pin_mode == MODE_PIN_ALT;  // assume all alt definitions are PWM
+}
+
+int8_t digital_pin_to_analog_pin(const pin_t Ard_num) {
+  if (WITHIN(Ard_num, NUM_ANALOG_FIRST, NUM_ANALOG_LAST))
+    return Ard_num - NUM_ANALOG_FIRST;
+
+  const uint32_t ind = digitalPinToAnalogInput(Ard_num);
+  return (ind < NUM_ANALOG_INPUTS) ? ind : -1;
+}
+
+bool IS_ANALOG(const pin_t Ard_num) {
+  return get_pin_mode(Ard_num) == MODE_PIN_ANALOG;
+}
+
+bool is_digital(const pin_t Ard_num) {
+  const uint8_t pin_mode = get_pin_mode(pin_array[Ard_num].pin);
+  return pin_mode == MODE_PIN_INPUT || pin_mode == MODE_PIN_OUTPUT;
+}
+
+void print_port(const pin_t Ard_num) {
+  char buffer[16];
+  pin_t Index;
+  for (Index = 0; Index < NUMBER_PINS_TOTAL; Index++)
+    if (Ard_num == GET_PIN_MAP_PIN_M43(Index)) break;
+
+  const char * ppa = pin_xref[Index].Port_pin_alpha;
+  sprintf_P(buffer, PSTR("%s"), ppa);
+  SERIAL_ECHO(buffer);
+  if (ppa[3] == '\0') SERIAL_CHAR(' ');
+
+  // print analog pin number
+  const int8_t Port_pin = digital_pin_to_analog_pin(Ard_num);
+  if (Port_pin >= 0) {
+    sprintf_P(buffer, PSTR(" (A%d) "), Port_pin);
+    SERIAL_ECHO(buffer);
+    if (Port_pin < 10) SERIAL_CHAR(' ');
+  }
+  else
+    SERIAL_ECHO_SP(7);
+
+  // Print number to be used with M42
+  int calc_p = Ard_num;
+  if (Ard_num > NUM_DIGITAL_PINS) {
+    calc_p -= NUM_ANALOG_FIRST;
+    if (calc_p > 7) calc_p += 8;
+  }
+  SERIAL_ECHOPGM(" M42 P", calc_p);
+  SERIAL_CHAR(' ');
+  if (calc_p < 100) {
+    SERIAL_CHAR(' ');
+    if (calc_p <  10)
+      SERIAL_CHAR(' ');
+  }
+}
+
+bool pwm_status(const pin_t Ard_num) {
+  return get_pin_mode(Ard_num) == MODE_PIN_ALT;
+}
+
+void pwm_details(const pin_t Ard_num) {
+  #ifndef STM32F1xx
+    if (pwm_status(Ard_num)) {
+      uint32_t alt_all = 0;
+      const PinName dp = digitalPinToPinName(Ard_num);
+      pin_t pin_number = uint8_t(PIN_NUM(dp));
+      const bool over_7 = pin_number >= 8;
+      const uint8_t ind = over_7 ? 1 : 0;
+      switch (PORT_ALPHA(dp)) {  // get alt function
+        case 'A' : alt_all = GPIOA->AFR[ind]; break;
+        case 'B' : alt_all = GPIOB->AFR[ind]; break;
+        case 'C' : alt_all = GPIOC->AFR[ind]; break;
+        case 'D' : alt_all = GPIOD->AFR[ind]; break;
+        #ifdef PE_0
+          case 'E' : alt_all = GPIOE->AFR[ind]; break;
+        #elif defined(PF_0)
+          case 'F' : alt_all = GPIOF->AFR[ind]; break;
+        #elif defined(PG_0)
+          case 'G' : alt_all = GPIOG->AFR[ind]; break;
+        #elif defined(PH_0)
+          case 'H' : alt_all = GPIOH->AFR[ind]; break;
+        #elif defined(PI_0)
+          case 'I' : alt_all = GPIOI->AFR[ind]; break;
+        #elif defined(PJ_0)
+          case 'J' : alt_all = GPIOJ->AFR[ind]; break;
+        #elif defined(PK_0)
+          case 'K' : alt_all = GPIOK->AFR[ind]; break;
+        #elif defined(PL_0)
+          case 'L' : alt_all = GPIOL->AFR[ind]; break;
+        #endif
+      }
+      if (over_7) pin_number -= 8;
+
+      uint8_t alt_func = (alt_all >> (4 * pin_number)) & 0x0F;
+      SERIAL_ECHOPGM("Alt Function: ", alt_func);
+      if (alt_func < 10) SERIAL_CHAR(' ');
+      SERIAL_ECHOPGM(" - ");
+      switch (alt_func) {
+        case  0 : SERIAL_ECHOPGM("system (misc. I/O)"); break;
+        case  1 : SERIAL_ECHOPGM("TIM1/TIM2 (probably PWM)"); break;
+        case  2 : SERIAL_ECHOPGM("TIM3..5 (probably PWM)"); break;
+        case  3 : SERIAL_ECHOPGM("TIM8..11 (probably PWM)"); break;
+        case  4 : SERIAL_ECHOPGM("I2C1..3"); break;
+        case  5 : SERIAL_ECHOPGM("SPI1/SPI2"); break;
+        case  6 : SERIAL_ECHOPGM("SPI3"); break;
+        case  7 : SERIAL_ECHOPGM("USART1..3"); break;
+        case  8 : SERIAL_ECHOPGM("USART4..6"); break;
+        case  9 : SERIAL_ECHOPGM("CAN1/CAN2, TIM12..14  (probably PWM)"); break;
+        case 10 : SERIAL_ECHOPGM("OTG"); break;
+        case 11 : SERIAL_ECHOPGM("ETH"); break;
+        case 12 : SERIAL_ECHOPGM("FSMC, SDIO, OTG"); break;
+        case 13 : SERIAL_ECHOPGM("DCMI"); break;
+        case 14 : SERIAL_ECHOPGM("unused (shouldn't see this)"); break;
+        case 15 : SERIAL_ECHOPGM("EVENTOUT"); break;
+      }
+    }
+  #else
+    // TODO: F1 doesn't support changing pins function, so we need to check the function of the PIN and if it's enabled
+  #endif
+} // pwm_details

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/pins_Xref.h

@@ -0,0 +1,612 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+//
+// make a list of the Arduino pin numbers in the Port/Pin order
+//
+#ifdef PA0
+  PIN_ADD(PA0)
+#endif
+#ifdef PA1
+  PIN_ADD(PA1)
+#endif
+#ifdef PA2
+  PIN_ADD(PA2)
+#endif
+#ifdef PA3
+  PIN_ADD(PA3)
+#endif
+#ifdef PA4
+  PIN_ADD(PA4)
+#endif
+#ifdef PA5
+  PIN_ADD(PA5)
+#endif
+#ifdef PA6
+  PIN_ADD(PA6)
+#endif
+#ifdef PA7
+  PIN_ADD(PA7)
+#endif
+#ifdef PA8
+  PIN_ADD(PA8)
+#endif
+#ifdef PA9
+  PIN_ADD(PA9)
+#endif
+#ifdef PA10
+  PIN_ADD(PA10)
+#endif
+#ifdef PA11
+  PIN_ADD(PA11)
+#endif
+#ifdef PA12
+  PIN_ADD(PA12)
+#endif
+#ifdef PA13
+  PIN_ADD(PA13)
+#endif
+#ifdef PA14
+  PIN_ADD(PA14)
+#endif
+#ifdef PA15
+  PIN_ADD(PA15)
+#endif
+
+#ifdef PB0
+  PIN_ADD(PB0)
+#endif
+#ifdef PB1
+  PIN_ADD(PB1)
+#endif
+#ifdef PB2
+  PIN_ADD(PB2)
+#endif
+#ifdef PB3
+  PIN_ADD(PB3)
+#endif
+#ifdef PB4
+  PIN_ADD(PB4)
+#endif
+#ifdef PB5
+  PIN_ADD(PB5)
+#endif
+#ifdef PB6
+  PIN_ADD(PB6)
+#endif
+#ifdef PB7
+  PIN_ADD(PB7)
+#endif
+#ifdef PB8
+  PIN_ADD(PB8)
+#endif
+#ifdef PB9
+  PIN_ADD(PB9)
+#endif
+#ifdef PB10
+  PIN_ADD(PB10)
+#endif
+#ifdef PB11
+  PIN_ADD(PB11)
+#endif
+#ifdef PB12
+  PIN_ADD(PB12)
+#endif
+#ifdef PB13
+  PIN_ADD(PB13)
+#endif
+#ifdef PB14
+  PIN_ADD(PB14)
+#endif
+#ifdef PB15
+  PIN_ADD(PB15)
+#endif
+
+#ifdef PC0
+  PIN_ADD(PC0)
+#endif
+#ifdef PC1
+  PIN_ADD(PC1)
+#endif
+#ifdef PC2
+  PIN_ADD(PC2)
+#endif
+#ifdef PC3
+  PIN_ADD(PC3)
+#endif
+#ifdef PC4
+  PIN_ADD(PC4)
+#endif
+#ifdef PC5
+  PIN_ADD(PC5)
+#endif
+#ifdef PC6
+  PIN_ADD(PC6)
+#endif
+#ifdef PC7
+  PIN_ADD(PC7)
+#endif
+#ifdef PC8
+  PIN_ADD(PC8)
+#endif
+#ifdef PC9
+  PIN_ADD(PC9)
+#endif
+#ifdef PC10
+  PIN_ADD(PC10)
+#endif
+#ifdef PC11
+  PIN_ADD(PC11)
+#endif
+#ifdef PC12
+  PIN_ADD(PC12)
+#endif
+#ifdef PC13
+  PIN_ADD(PC13)
+#endif
+#ifdef PC14
+  PIN_ADD(PC14)
+#endif
+#ifdef PC15
+  PIN_ADD(PC15)
+#endif
+
+#ifdef PD0
+  PIN_ADD(PD0)
+#endif
+#ifdef PD1
+  PIN_ADD(PD1)
+#endif
+#ifdef PD2
+  PIN_ADD(PD2)
+#endif
+#ifdef PD3
+  PIN_ADD(PD3)
+#endif
+#ifdef PD4
+  PIN_ADD(PD4)
+#endif
+#ifdef PD5
+  PIN_ADD(PD5)
+#endif
+#ifdef PD6
+  PIN_ADD(PD6)
+#endif
+#ifdef PD7
+  PIN_ADD(PD7)
+#endif
+#ifdef PD8
+  PIN_ADD(PD8)
+#endif
+#ifdef PD9
+  PIN_ADD(PD9)
+#endif
+#ifdef PD10
+  PIN_ADD(PD10)
+#endif
+#ifdef PD11
+  PIN_ADD(PD11)
+#endif
+#ifdef PD12
+  PIN_ADD(PD12)
+#endif
+#ifdef PD13
+  PIN_ADD(PD13)
+#endif
+#ifdef PD14
+  PIN_ADD(PD14)
+#endif
+#ifdef PD15
+  PIN_ADD(PD15)
+#endif
+
+#ifdef PE0
+  PIN_ADD(PE0)
+#endif
+#ifdef PE1
+  PIN_ADD(PE1)
+#endif
+#ifdef PE2
+  PIN_ADD(PE2)
+#endif
+#ifdef PE3
+  PIN_ADD(PE3)
+#endif
+#ifdef PE4
+  PIN_ADD(PE4)
+#endif
+#ifdef PE5
+  PIN_ADD(PE5)
+#endif
+#ifdef PE6
+  PIN_ADD(PE6)
+#endif
+#ifdef PE7
+  PIN_ADD(PE7)
+#endif
+#ifdef PE8
+  PIN_ADD(PE8)
+#endif
+#ifdef PE9
+  PIN_ADD(PE9)
+#endif
+#ifdef PE10
+  PIN_ADD(PE10)
+#endif
+#ifdef PE11
+  PIN_ADD(PE11)
+#endif
+#ifdef PE12
+  PIN_ADD(PE12)
+#endif
+#ifdef PE13
+  PIN_ADD(PE13)
+#endif
+#ifdef PE14
+  PIN_ADD(PE14)
+#endif
+#ifdef PE15
+  PIN_ADD(PE15)
+#endif
+
+#ifdef PF0
+  PIN_ADD(PF0)
+#endif
+#ifdef PF1
+  PIN_ADD(PF1)
+#endif
+#ifdef PF2
+  PIN_ADD(PF2)
+#endif
+#ifdef PF3
+  PIN_ADD(PF3)
+#endif
+#ifdef PF4
+  PIN_ADD(PF4)
+#endif
+#ifdef PF5
+  PIN_ADD(PF5)
+#endif
+#ifdef PF6
+  PIN_ADD(PF6)
+#endif
+#ifdef PF7
+  PIN_ADD(PF7)
+#endif
+#ifdef PF8
+  PIN_ADD(PF8)
+#endif
+#ifdef PF9
+  PIN_ADD(PF9)
+#endif
+#ifdef PF10
+  PIN_ADD(PF10)
+#endif
+#ifdef PF11
+  PIN_ADD(PF11)
+#endif
+#ifdef PF12
+  PIN_ADD(PF12)
+#endif
+#ifdef PF13
+  PIN_ADD(PF13)
+#endif
+#ifdef PF14
+  PIN_ADD(PF14)
+#endif
+#ifdef PF15
+  PIN_ADD(PF15)
+#endif
+
+#ifdef PG0
+  PIN_ADD(PG0)
+#endif
+#ifdef PG1
+  PIN_ADD(PG1)
+#endif
+#ifdef PG2
+  PIN_ADD(PG2)
+#endif
+#ifdef PG3
+  PIN_ADD(PG3)
+#endif
+#ifdef PG4
+  PIN_ADD(PG4)
+#endif
+#ifdef PG5
+  PIN_ADD(PG5)
+#endif
+#ifdef PG6
+  PIN_ADD(PG6)
+#endif
+#ifdef PG7
+  PIN_ADD(PG7)
+#endif
+#ifdef PG8
+  PIN_ADD(PG8)
+#endif
+#ifdef PG9
+  PIN_ADD(PG9)
+#endif
+#ifdef PG10
+  PIN_ADD(PG10)
+#endif
+#ifdef PG11
+  PIN_ADD(PG11)
+#endif
+#ifdef PG12
+  PIN_ADD(PG12)
+#endif
+#ifdef PG13
+  PIN_ADD(PG13)
+#endif
+#ifdef PG14
+  PIN_ADD(PG14)
+#endif
+#ifdef PG15
+  PIN_ADD(PG15)
+#endif
+
+#ifdef PH0
+  PIN_ADD(PH0)
+#endif
+#ifdef PH1
+  PIN_ADD(PH1)
+#endif
+#ifdef PH2
+  PIN_ADD(PH2)
+#endif
+#ifdef PH3
+  PIN_ADD(PH3)
+#endif
+#ifdef PH4
+  PIN_ADD(PH4)
+#endif
+#ifdef PH5
+  PIN_ADD(PH5)
+#endif
+#ifdef PH6
+  PIN_ADD(PH6)
+#endif
+#ifdef PH7
+  PIN_ADD(PH7)
+#endif
+#ifdef PH8
+  PIN_ADD(PH8)
+#endif
+#ifdef PH9
+  PIN_ADD(PH9)
+#endif
+#ifdef PH10
+  PIN_ADD(PH10)
+#endif
+#ifdef PH11
+  PIN_ADD(PH11)
+#endif
+#ifdef PH12
+  PIN_ADD(PH12)
+#endif
+#ifdef PH13
+  PIN_ADD(PH13)
+#endif
+#ifdef PH14
+  PIN_ADD(PH14)
+#endif
+#ifdef PH15
+  PIN_ADD(PH15)
+#endif
+
+#ifdef PI0
+  PIN_ADD(PI0)
+#endif
+#ifdef PI1
+  PIN_ADD(PI1)
+#endif
+#ifdef PI2
+  PIN_ADD(PI2)
+#endif
+#ifdef PI3
+  PIN_ADD(PI3)
+#endif
+#ifdef PI4
+  PIN_ADD(PI4)
+#endif
+#ifdef PI5
+  PIN_ADD(PI5)
+#endif
+#ifdef PI6
+  PIN_ADD(PI6)
+#endif
+#ifdef PI7
+  PIN_ADD(PI7)
+#endif
+#ifdef PI8
+  PIN_ADD(PI8)
+#endif
+#ifdef PI9
+  PIN_ADD(PI9)
+#endif
+#ifdef PI10
+  PIN_ADD(PI10)
+#endif
+#ifdef PI11
+  PIN_ADD(PI11)
+#endif
+#ifdef PI12
+  PIN_ADD(PI12)
+#endif
+#ifdef PI13
+  PIN_ADD(PI13)
+#endif
+#ifdef PI14
+  PIN_ADD(PI14)
+#endif
+#ifdef PI15
+  PIN_ADD(PI15)
+#endif
+
+#ifdef PJ0
+  PIN_ADD(PJ0)
+#endif
+#ifdef PJ1
+  PIN_ADD(PJ1)
+#endif
+#ifdef PJ2
+  PIN_ADD(PJ2)
+#endif
+#ifdef PJ3
+  PIN_ADD(PJ3)
+#endif
+#ifdef PJ4
+  PIN_ADD(PJ4)
+#endif
+#ifdef PJ5
+  PIN_ADD(PJ5)
+#endif
+#ifdef PJ6
+  PIN_ADD(PJ6)
+#endif
+#ifdef PJ7
+  PIN_ADD(PJ7)
+#endif
+#ifdef PJ8
+  PIN_ADD(PJ8)
+#endif
+#ifdef PJ9
+  PIN_ADD(PJ9)
+#endif
+#ifdef PJ10
+  PIN_ADD(PJ10)
+#endif
+#ifdef PJ11
+  PIN_ADD(PJ11)
+#endif
+#ifdef PJ12
+  PIN_ADD(PJ12)
+#endif
+#ifdef PJ13
+  PIN_ADD(PJ13)
+#endif
+#ifdef PJ14
+  PIN_ADD(PJ14)
+#endif
+#ifdef PJ15
+  PIN_ADD(PJ15)
+#endif
+
+#ifdef PK0
+  PIN_ADD(PK0)
+#endif
+#ifdef PK1
+  PIN_ADD(PK1)
+#endif
+#ifdef PK2
+  PIN_ADD(PK2)
+#endif
+#ifdef PK3
+  PIN_ADD(PK3)
+#endif
+#ifdef PK4
+  PIN_ADD(PK4)
+#endif
+#ifdef PK5
+  PIN_ADD(PK5)
+#endif
+#ifdef PK6
+  PIN_ADD(PK6)
+#endif
+#ifdef PK7
+  PIN_ADD(PK7)
+#endif
+#ifdef PK8
+  PIN_ADD(PK8)
+#endif
+#ifdef PK9
+  PIN_ADD(PK9)
+#endif
+#ifdef PK10
+  PIN_ADD(PK10)
+#endif
+#ifdef PK11
+  PIN_ADD(PK11)
+#endif
+#ifdef PK12
+  PIN_ADD(PK12)
+#endif
+#ifdef PK13
+  PIN_ADD(PK13)
+#endif
+#ifdef PK14
+  PIN_ADD(PK14)
+#endif
+#ifdef PK15
+  PIN_ADD(PK15)
+#endif
+
+#ifdef PL0
+  PIN_ADD(PL0)
+#endif
+#ifdef PL1
+  PIN_ADD(PL1)
+#endif
+#ifdef PL2
+  PIN_ADD(PL2)
+#endif
+#ifdef PL3
+  PIN_ADD(PL3)
+#endif
+#ifdef PL4
+  PIN_ADD(PL4)
+#endif
+#ifdef PL5
+  PIN_ADD(PL5)
+#endif
+#ifdef PL6
+  PIN_ADD(PL6)
+#endif
+#ifdef PL7
+  PIN_ADD(PL7)
+#endif
+#ifdef PL8
+  PIN_ADD(PL8)
+#endif
+#ifdef PL9
+  PIN_ADD(PL9)
+#endif
+#ifdef PL10
+  PIN_ADD(PL10)
+#endif
+#ifdef PL11
+  PIN_ADD(PL11)
+#endif
+#ifdef PL12
+  PIN_ADD(PL12)
+#endif
+#ifdef PL13
+  PIN_ADD(PL13)
+#endif
+#ifdef PL14
+  PIN_ADD(PL14)
+#endif
+#ifdef PL15
+  PIN_ADD(PL15)
+#endif

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/sdio.cpp

@@ -0,0 +1,457 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(ONBOARD_SDIO)
+
+#include "sdio.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#if defined(STM32F103xE) || defined(STM32F103xG)
+  #include <stm32f1xx_hal_rcc_ex.h>
+  #include <stm32f1xx_hal_sd.h>
+#elif defined(STM32F4xx)
+  #include <stm32f4xx_hal_rcc.h>
+  #include <stm32f4xx_hal_dma.h>
+  #include <stm32f4xx_hal_gpio.h>
+  #include <stm32f4xx_hal_sd.h>
+#elif defined(STM32F7xx)
+  #include <stm32f7xx_hal_rcc.h>
+  #include <stm32f7xx_hal_dma.h>
+  #include <stm32f7xx_hal_gpio.h>
+  #include <stm32f7xx_hal_sd.h>
+#elif defined(STM32H7xx)
+  #define SDIO_FOR_STM32H7
+  #include <stm32h7xx_hal_rcc.h>
+  #include <stm32h7xx_hal_dma.h>
+  #include <stm32h7xx_hal_gpio.h>
+  #include <stm32h7xx_hal_sd.h>
+#else
+  #error "SDIO is only supported with STM32F103xE, STM32F103xG, STM32F4xx, STM32F7xx, and STM32H7xx."
+#endif
+
+// SDIO Max Clock (naming from STM Manual, don't change)
+#define SDIOCLK 48000000
+
+// Target Clock, configurable. Default is 18MHz, from STM32F1
+#ifndef SDIO_CLOCK
+  #define SDIO_CLOCK 18000000 // 18 MHz
+#endif
+
+SD_HandleTypeDef hsd;  // SDIO structure
+
+static uint32_t clock_to_divider(uint32_t clk) {
+  #ifdef SDIO_FOR_STM32H7
+    // SDMMC_CK frequency = sdmmc_ker_ck / [2 * CLKDIV].
+    uint32_t sdmmc_clk = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SDMMC);
+    return sdmmc_clk / (2U * SDIO_CLOCK) + (sdmmc_clk % (2U * SDIO_CLOCK) != 0);
+  #else
+    // limit the SDIO master clock to 8/3 of PCLK2. See STM32 Manuals
+    // Also limited to no more than 48Mhz (SDIOCLK).
+    const uint32_t pclk2 = HAL_RCC_GetPCLK2Freq();
+    clk = min(clk, (uint32_t)(pclk2 * 8 / 3));
+    clk = min(clk, (uint32_t)SDIOCLK);
+    // Round up divider, so we don't run the card over the speed supported,
+    // and subtract by 2, because STM32 will add 2, as written in the manual:
+    // SDIO_CK frequency = SDIOCLK / [CLKDIV + 2]
+    return pclk2 / clk + (pclk2 % clk != 0) - 2;
+  #endif
+}
+
+// Start the SDIO clock
+void HAL_SD_MspInit(SD_HandleTypeDef *hsd) {
+  UNUSED(hsd);
+  #ifdef SDIO_FOR_STM32H7
+    pinmap_pinout(PC_12, PinMap_SD);
+    pinmap_pinout(PD_2,  PinMap_SD);
+    pinmap_pinout(PC_8,  PinMap_SD);
+    #if PINS_EXIST(SDIO_D1, SDIO_D2, SDIO_D3)  // Define D1-D3 only for 4-bit wide SDIO bus
+      pinmap_pinout(PC_9,  PinMap_SD);
+      pinmap_pinout(PC_10, PinMap_SD);
+      pinmap_pinout(PC_11, PinMap_SD);
+    #endif
+    __HAL_RCC_SDMMC1_CLK_ENABLE();
+    HAL_NVIC_EnableIRQ(SDMMC1_IRQn);
+  #else
+    __HAL_RCC_SDIO_CLK_ENABLE();
+  #endif
+}
+
+#ifdef SDIO_FOR_STM32H7
+
+  #define SD_TIMEOUT              1000 // ms
+
+  extern "C" void SDMMC1_IRQHandler(void) { HAL_SD_IRQHandler(&hsd); }
+
+  uint8_t waitingRxCplt = 0, waitingTxCplt = 0;
+  void HAL_SD_TxCpltCallback(SD_HandleTypeDef *hsdio) { waitingTxCplt = 0; }
+  void HAL_SD_RxCpltCallback(SD_HandleTypeDef *hsdio) { waitingRxCplt = 0; }
+
+  void HAL_SD_MspDeInit(SD_HandleTypeDef *hsd) {
+    __HAL_RCC_SDMMC1_FORCE_RESET();   delay(10);
+    __HAL_RCC_SDMMC1_RELEASE_RESET(); delay(10);
+  }
+
+  bool SDIO_Init() {
+    HAL_StatusTypeDef sd_state = HAL_OK;
+    if (hsd.Instance == SDMMC1) HAL_SD_DeInit(&hsd);
+
+    // HAL SD initialization
+    hsd.Instance = SDMMC1;
+    hsd.Init.ClockEdge = SDMMC_CLOCK_EDGE_RISING;
+    hsd.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_DISABLE;
+    hsd.Init.BusWide = SDMMC_BUS_WIDE_1B;
+    hsd.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_DISABLE;
+    hsd.Init.ClockDiv = clock_to_divider(SDIO_CLOCK);
+    sd_state = HAL_SD_Init(&hsd);
+
+    #if PINS_EXIST(SDIO_D1, SDIO_D2, SDIO_D3)
+      if (sd_state == HAL_OK)
+        sd_state = HAL_SD_ConfigWideBusOperation(&hsd, SDMMC_BUS_WIDE_4B);
+    #endif
+
+    return (sd_state == HAL_OK);
+  }
+
+#else // !SDIO_FOR_STM32H7
+
+  #define SD_TIMEOUT               500 // ms
+
+  // SDIO retries, configurable. Default is 3, from STM32F1
+  #ifndef SDIO_READ_RETRIES
+    #define SDIO_READ_RETRIES 3
+  #endif
+
+  // F4 supports one DMA for RX and another for TX, but Marlin will never
+  // do read and write at same time, so we use the same DMA for both.
+  DMA_HandleTypeDef hdma_sdio;
+
+  #ifdef STM32F1xx
+    #define DMA_IRQ_HANDLER DMA2_Channel4_5_IRQHandler
+  #elif defined(STM32F4xx)
+    #define DMA_IRQ_HANDLER DMA2_Stream3_IRQHandler
+  #else
+    #error "Unknown STM32 architecture."
+  #endif
+
+  extern "C" void SDIO_IRQHandler(void) { HAL_SD_IRQHandler(&hsd); }
+  extern "C" void DMA_IRQ_HANDLER(void) { HAL_DMA_IRQHandler(&hdma_sdio); }
+
+  /*
+    SDIO_INIT_CLK_DIV is 118
+    SDIO clock frequency is 48MHz / (TRANSFER_CLOCK_DIV + 2)
+    SDIO init clock frequency should not exceed 400kHz = 48MHz / (118 + 2)
+
+    Default TRANSFER_CLOCK_DIV is 2 (118 / 40)
+    Default SDIO clock frequency is 48MHz / (2 + 2) = 12 MHz
+    This might be too fast for stable SDIO operations
+
+    MKS Robin SDIO seems stable with BusWide 1bit and ClockDiv 8 (i.e., 4.8MHz SDIO clock frequency)
+    More testing is required as there are clearly some 4bit init problems.
+  */
+
+  void go_to_transfer_speed() {
+    /* Default SDIO peripheral configuration for SD card initialization */
+    hsd.Init.ClockEdge           = hsd.Init.ClockEdge;
+    hsd.Init.ClockBypass         = hsd.Init.ClockBypass;
+    hsd.Init.ClockPowerSave      = hsd.Init.ClockPowerSave;
+    hsd.Init.BusWide             = hsd.Init.BusWide;
+    hsd.Init.HardwareFlowControl = hsd.Init.HardwareFlowControl;
+    hsd.Init.ClockDiv            = clock_to_divider(SDIO_CLOCK);
+
+    /* Initialize SDIO peripheral interface with default configuration */
+    SDIO_Init(hsd.Instance, hsd.Init);
+  }
+
+  void SD_LowLevel_Init() {
+    uint32_t tempreg;
+
+    // Enable GPIO clocks
+    __HAL_RCC_GPIOC_CLK_ENABLE();
+    __HAL_RCC_GPIOD_CLK_ENABLE();
+
+    GPIO_InitTypeDef  GPIO_InitStruct;
+
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = 1;  // GPIO_NOPULL
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+
+    #if DISABLED(STM32F1xx)
+      GPIO_InitStruct.Alternate = GPIO_AF12_SDIO;
+    #endif
+
+    GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_12;  // D0 & SCK
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    #if PINS_EXIST(SDIO_D1, SDIO_D2, SDIO_D3)  // define D1-D3 only if have a four bit wide SDIO bus
+      GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11;  // D1-D3
+      HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+    #endif
+
+    // Configure PD.02 CMD line
+    GPIO_InitStruct.Pin = GPIO_PIN_2;
+    HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
+
+    // Setup DMA
+    #ifdef STM32F1xx
+      hdma_sdio.Init.Mode = DMA_NORMAL;
+      hdma_sdio.Instance = DMA2_Channel4;
+      HAL_NVIC_EnableIRQ(DMA2_Channel4_5_IRQn);
+    #elif defined(STM32F4xx)
+      hdma_sdio.Init.Mode = DMA_PFCTRL;
+      hdma_sdio.Instance = DMA2_Stream3;
+      hdma_sdio.Init.Channel = DMA_CHANNEL_4;
+      hdma_sdio.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
+      hdma_sdio.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+      hdma_sdio.Init.MemBurst = DMA_MBURST_INC4;
+      hdma_sdio.Init.PeriphBurst = DMA_PBURST_INC4;
+      HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
+    #endif
+    HAL_NVIC_EnableIRQ(SDIO_IRQn);
+    hdma_sdio.Init.PeriphInc = DMA_PINC_DISABLE;
+    hdma_sdio.Init.MemInc = DMA_MINC_ENABLE;
+    hdma_sdio.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
+    hdma_sdio.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
+    hdma_sdio.Init.Priority = DMA_PRIORITY_LOW;
+    __HAL_LINKDMA(&hsd, hdmarx, hdma_sdio);
+    __HAL_LINKDMA(&hsd, hdmatx, hdma_sdio);
+
+    #ifdef STM32F1xx
+      __HAL_RCC_SDIO_CLK_ENABLE();
+      __HAL_RCC_DMA2_CLK_ENABLE();
+    #else
+      __HAL_RCC_SDIO_FORCE_RESET();   delay(2);
+      __HAL_RCC_SDIO_RELEASE_RESET(); delay(2);
+      __HAL_RCC_SDIO_CLK_ENABLE();
+
+      __HAL_RCC_DMA2_FORCE_RESET();   delay(2);
+      __HAL_RCC_DMA2_RELEASE_RESET(); delay(2);
+      __HAL_RCC_DMA2_CLK_ENABLE();
+    #endif
+
+    // Initialize the SDIO (with initial <400Khz Clock)
+    tempreg = 0                   // Reset value
+            | SDIO_CLKCR_CLKEN    // Clock enabled
+            | SDIO_INIT_CLK_DIV;  // Clock Divider. Clock = 48000 / (118 + 2) = 400Khz
+                                  // Keep the rest at 0 => HW_Flow Disabled, Rising Clock Edge, Disable CLK ByPass, Bus Width = 0, Power save Disable
+    SDIO->CLKCR = tempreg;
+
+    // Power up the SDIO
+    SDIO_PowerState_ON(SDIO);
+    hsd.Instance = SDIO;
+  }
+
+  bool SDIO_Init() {
+    uint8_t retryCnt = SDIO_READ_RETRIES;
+
+    bool status;
+    hsd.Instance = SDIO;
+    hsd.State = HAL_SD_STATE_RESET;
+
+    SD_LowLevel_Init();
+
+    uint8_t retry_Cnt = retryCnt;
+    for (;;) {
+      hal.watchdog_refresh();
+      status = (bool) HAL_SD_Init(&hsd);
+      if (!status) break;
+      if (!--retry_Cnt) return false;   // return failing status if retries are exhausted
+    }
+
+    go_to_transfer_speed();
+
+    hsd.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_ENABLE;
+    hsd.Init.ClockDiv = 8;
+
+    #if PINS_EXIST(SDIO_D1, SDIO_D2, SDIO_D3) // go to 4 bit wide mode if pins are defined
+      retry_Cnt = retryCnt;
+      for (;;) {
+        hal.watchdog_refresh();
+        if (!HAL_SD_ConfigWideBusOperation(&hsd, SDIO_BUS_WIDE_4B)) break;  // some cards are only 1 bit wide so a pass here is not required
+        if (!--retry_Cnt) break;
+      }
+      if (!retry_Cnt) {  // wide bus failed, go back to one bit wide mode
+        hsd.State = (HAL_SD_StateTypeDef) 0;  // HAL_SD_STATE_RESET
+        SD_LowLevel_Init();
+        retry_Cnt = retryCnt;
+        for (;;) {
+          hal.watchdog_refresh();
+          status = (bool) HAL_SD_Init(&hsd);
+          if (!status) break;
+          if (!--retry_Cnt) return false;   // return failing status if retries are exhausted
+        }
+        go_to_transfer_speed();
+      }
+    #endif
+
+    return true;
+  }
+
+  /**
+   * @brief Read or Write a block
+   * @details Read or Write a block with SDIO
+   *
+   * @param block The block index
+   * @param src The data buffer source for a write
+   * @param dst The data buffer destination for a read
+   *
+   * @return true on success
+   */
+  static bool SDIO_ReadWriteBlock_DMA(uint32_t block, const uint8_t *src, uint8_t *dst) {
+    if (HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER) return false;
+
+    hal.watchdog_refresh();
+
+    HAL_StatusTypeDef ret;
+    if (src) {
+      hdma_sdio.Init.Direction = DMA_MEMORY_TO_PERIPH;
+      HAL_DMA_Init(&hdma_sdio);
+      ret = HAL_SD_WriteBlocks_DMA(&hsd, (uint8_t*)src, block, 1);
+    }
+    else {
+      hdma_sdio.Init.Direction = DMA_PERIPH_TO_MEMORY;
+      HAL_DMA_Init(&hdma_sdio);
+      ret = HAL_SD_ReadBlocks_DMA(&hsd, (uint8_t*)dst, block, 1);
+    }
+
+    if (ret != HAL_OK) {
+      HAL_DMA_Abort_IT(&hdma_sdio);
+      HAL_DMA_DeInit(&hdma_sdio);
+      return false;
+    }
+
+    millis_t timeout = millis() + SD_TIMEOUT;
+    // Wait the transfer
+    while (hsd.State != HAL_SD_STATE_READY) {
+      if (ELAPSED(millis(), timeout)) {
+        HAL_DMA_Abort_IT(&hdma_sdio);
+        HAL_DMA_DeInit(&hdma_sdio);
+        return false;
+      }
+    }
+
+    while (__HAL_DMA_GET_FLAG(&hdma_sdio, __HAL_DMA_GET_TC_FLAG_INDEX(&hdma_sdio)) != 0
+        || __HAL_DMA_GET_FLAG(&hdma_sdio, __HAL_DMA_GET_TE_FLAG_INDEX(&hdma_sdio)) != 0) { /* nada */ }
+
+    HAL_DMA_Abort_IT(&hdma_sdio);
+    HAL_DMA_DeInit(&hdma_sdio);
+
+    timeout = millis() + SD_TIMEOUT;
+    while (HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER) if (ELAPSED(millis(), timeout)) return false;
+
+    return true;
+  }
+
+#endif // !SDIO_FOR_STM32H7
+
+/**
+ * @brief Read a block
+ * @details Read a block from media with SDIO
+ *
+ * @param block The block index
+ * @param src The block buffer
+ *
+ * @return true on success
+ */
+bool SDIO_ReadBlock(uint32_t block, uint8_t *dst) {
+  #ifdef SDIO_FOR_STM32H7
+
+    uint32_t timeout = HAL_GetTick() + SD_TIMEOUT;
+
+    while (HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER)
+      if (HAL_GetTick() >= timeout) return false;
+
+    waitingRxCplt = 1;
+    if (HAL_SD_ReadBlocks_DMA(&hsd, (uint8_t*)dst, block, 1) != HAL_OK)
+      return false;
+
+    timeout = HAL_GetTick() + SD_TIMEOUT;
+    while (waitingRxCplt)
+      if (HAL_GetTick() >= timeout) return false;
+
+    return true;
+
+  #else
+
+    uint8_t retries = SDIO_READ_RETRIES;
+    while (retries--) if (SDIO_ReadWriteBlock_DMA(block, nullptr, dst)) return true;
+    return false;
+
+  #endif
+}
+
+/**
+ * @brief Write a block
+ * @details Write a block to media with SDIO
+ *
+ * @param block The block index
+ * @param src The block data
+ *
+ * @return true on success
+ */
+bool SDIO_WriteBlock(uint32_t block, const uint8_t *src) {
+  #ifdef SDIO_FOR_STM32H7
+
+    uint32_t timeout = HAL_GetTick() + SD_TIMEOUT;
+
+    while (HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER)
+      if (HAL_GetTick() >= timeout) return false;
+
+    waitingTxCplt = 1;
+    if (HAL_SD_WriteBlocks_DMA(&hsd, (uint8_t*)src, block, 1) != HAL_OK)
+      return false;
+
+    timeout = HAL_GetTick() + SD_TIMEOUT;
+    while (waitingTxCplt)
+      if (HAL_GetTick() >= timeout) return false;
+
+    return true;
+
+  #else
+
+    uint8_t retries = SDIO_READ_RETRIES;
+    while (retries--) {
+      if (SDIO_ReadWriteBlock_DMA(block, src, nullptr)) return true;
+      delay(10);
+    }
+    return false;
+
+  #endif
+}
+
+bool SDIO_IsReady() {
+  return hsd.State == HAL_SD_STATE_READY;
+}
+
+uint32_t SDIO_GetCardSize() {
+  return (uint32_t)(hsd.SdCard.BlockNbr) * (hsd.SdCard.BlockSize);
+}
+
+#endif // ONBOARD_SDIO
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/sdio.h

@@ -0,0 +1,29 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#define SDIO_D0_PIN   PC8
+#define SDIO_D1_PIN   PC9
+#define SDIO_D2_PIN   PC10
+#define SDIO_D3_PIN   PC11
+#define SDIO_CK_PIN   PC12
+#define SDIO_CMD_PIN  PD2

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/spi_pins.h

@@ -0,0 +1,38 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * Define SPI Pins: SCK, MISO, MOSI, SS
+ */
+#ifndef SD_SCK_PIN
+  #define SD_SCK_PIN  PIN_SPI_SCK
+#endif
+#ifndef SD_MISO_PIN
+  #define SD_MISO_PIN PIN_SPI_MISO
+#endif
+#ifndef SD_MOSI_PIN
+  #define SD_MOSI_PIN PIN_SPI_MOSI
+#endif
+#ifndef SD_SS_PIN
+  #define SD_SS_PIN   PIN_SPI_SS
+#endif

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/gt911.cpp

@@ -0,0 +1,208 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../../inc/MarlinConfig.h"
+
+#if ENABLED(TFT_TOUCH_DEVICE_GT911)
+
+#include "gt911.h"
+#include "pinconfig.h"
+
+SW_IIC::SW_IIC(uint16_t sda, uint16_t scl) {
+  scl_pin = scl;
+  sda_pin = sda;
+}
+
+// Software I2C hardware io init
+void SW_IIC::init() {
+  OUT_WRITE(scl_pin, HIGH);
+  OUT_WRITE(sda_pin, HIGH);
+}
+
+// Software I2C start signal
+void SW_IIC::start() {
+  write_sda(HIGH); // SDA = 1
+  write_scl(HIGH); // SCL = 1
+  iic_delay(2);
+  write_sda(LOW); // SDA = 0
+  iic_delay(1);
+  write_scl(LOW); // SCL = 0  // keep SCL low, avoid false stop caused by level jump caused by SDA switching IN/OUT
+}
+
+// Software I2C stop signal
+void SW_IIC::stop() {
+  write_scl(LOW); // SCL = 0
+  iic_delay(2);
+  write_sda(LOW); // SDA = 0
+  iic_delay(2);
+  write_scl(HIGH); // SCL = 1
+  iic_delay(2);
+  write_sda(HIGH); // SDA = 1
+}
+
+// Software I2C sends ACK or NACK signal
+void SW_IIC::send_ack(bool ack) {
+  write_sda(ack ? LOW : HIGH); // SDA = !ack
+  iic_delay(2);
+  write_scl(HIGH); // SCL = 1
+  iic_delay(2);
+  write_scl(LOW); // SCL = 0
+}
+
+// Software I2C read ACK or NACK signal
+bool SW_IIC::read_ack() {
+  bool error = 0;
+  set_sda_in();
+
+  iic_delay(2);
+
+  write_scl(HIGH); // SCL = 1
+  error = read_sda();
+
+  iic_delay(2);
+
+  write_scl(LOW);  // SCL = 0
+
+  set_sda_out();
+  return error;
+}
+
+void SW_IIC::send_byte(uint8_t txd) {
+  for (uint8_t i = 0; i < 8; ++i) {
+    write_sda(txd & 0x80); // write data bit
+    txd <<= 1;
+    iic_delay(1);
+    write_scl(HIGH); // SCL = 1
+    iic_delay(2);
+    write_scl(LOW); // SCL = 0
+    iic_delay(1);
+  }
+
+  read_ack();  // wait ack
+}
+
+uint8_t SW_IIC::read_byte(bool ack) {
+  uint8_t data = 0;
+
+  set_sda_in();
+  for (uint8_t i = 0; i < 8; ++i) {
+    write_scl(HIGH); // SCL = 1
+    iic_delay(1);
+    data <<= 1;
+    if (read_sda()) data++;
+    write_scl(LOW); // SCL = 0
+    iic_delay(2);
+  }
+  set_sda_out();
+
+  send_ack(ack);
+
+  return data;
+}
+
+GT911_REG_MAP GT911::reg;
+SW_IIC GT911::sw_iic = SW_IIC(GT911_SW_I2C_SDA_PIN, GT911_SW_I2C_SCL_PIN);
+
+void GT911::write_reg(uint16_t reg, uint8_t reg_len, uint8_t* w_data, uint8_t w_len) {
+  sw_iic.start();
+  sw_iic.send_byte(gt911_slave_address);  // Set IIC Slave address
+  for (uint8_t i = 0; i < reg_len; ++i) {  // Set reg address
+    uint8_t r = (reg >> (8 * (reg_len - 1 - i))) & 0xFF;
+    sw_iic.send_byte(r);
+  }
+
+  for (uint8_t i = 0; i < w_len; ++i) {  // Write data to reg
+    sw_iic.send_byte(w_data[i]);
+  }
+  sw_iic.stop();
+}
+
+void GT911::read_reg(uint16_t reg, uint8_t reg_len, uint8_t* r_data, uint8_t r_len) {
+  sw_iic.start();
+  sw_iic.send_byte(gt911_slave_address);  // Set IIC Slave address
+  for (uint8_t i = 0; i < reg_len; ++i) {  // Set reg address
+    uint8_t r = (reg >> (8 * (reg_len - 1 - i))) & 0xFF;
+    sw_iic.send_byte(r);
+  }
+
+  sw_iic.start();
+  sw_iic.send_byte(gt911_slave_address + 1);  // Set read mode
+
+  for (uint8_t i = 0; i < r_len; ++i)
+    r_data[i] = sw_iic.read_byte(1);  // Read data from reg
+
+  sw_iic.stop();
+}
+
+void GT911::Init() {
+  OUT_WRITE(GT911_RST_PIN, LOW);
+  OUT_WRITE(GT911_INT_PIN, LOW);
+  delay(11);
+  WRITE(GT911_INT_PIN, HIGH);
+  delayMicroseconds(110);
+  WRITE(GT911_RST_PIN, HIGH);
+  delay(6);
+  WRITE(GT911_INT_PIN, LOW);
+  delay(55);
+  SET_INPUT(GT911_INT_PIN);
+
+  sw_iic.init();
+
+  uint8_t clear_reg = 0x00;
+  write_reg(0x814E, 2, &clear_reg, 1); // Reset to 0 for start
+}
+
+bool GT911::getFirstTouchPoint(int16_t *x, int16_t *y) {
+  read_reg(0x814E, 2, &reg.REG.status, 1);
+
+  if (reg.REG.status >= 0x80 && reg.REG.status <= 0x85) {
+    read_reg(0x8150, 2, reg.map + 2, 38);
+    uint8_t clear_reg = 0x00;
+    write_reg(0x814E, 2, &clear_reg, 1); // Reset to 0 for start
+    // First touch point
+    *x = ((reg.REG.point[0].xh & 0x0F) << 8) | reg.REG.point[0].xl;
+    *y = ((reg.REG.point[0].yh & 0x0F) << 8) | reg.REG.point[0].yl;
+    return true;
+  }
+  return false;
+}
+
+bool GT911::getPoint(int16_t *x, int16_t *y) {
+  static bool touched = 0;
+  static int16_t read_x = 0, read_y = 0;
+  static millis_t next_time = 0;
+
+  if (ELAPSED(millis(), next_time)) {
+    touched = getFirstTouchPoint(&read_x, &read_y);
+    next_time = millis() + 20;
+  }
+
+  *x = read_x;
+  *y = read_y;
+  return touched;
+}
+
+#endif // TFT_TOUCH_DEVICE_GT911
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/gt911.h

@@ -0,0 +1,96 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../../inc/MarlinConfig.h"
+
+#define GT911_SLAVE_ADDRESS   0x28
+
+#if !PIN_EXISTS(GT911_RST)
+  #error "GT911_RST_PIN is not defined."
+#elif !PIN_EXISTS(GT911_INT)
+  #error "GT911_INT_PIN is not defined."
+#elif !PIN_EXISTS(GT911_SW_I2C_SCL)
+  #error "GT911_SW_I2C_SCL_PIN is not defined."
+#elif !PIN_EXISTS(GT911_SW_I2C_SDA)
+  #error "GT911_SW_I2C_SDA_PIN is not defined."
+#endif
+
+class SW_IIC {
+  private:
+    uint16_t scl_pin;
+    uint16_t sda_pin;
+    void write_scl(bool level) { WRITE(scl_pin, level); }
+    void write_sda(bool level) { WRITE(sda_pin, level); }
+    bool read_sda() { return READ(sda_pin); }
+    void set_sda_out() { SET_OUTPUT(sda_pin); }
+    void set_sda_in() { SET_INPUT_PULLUP(sda_pin); }
+    static void iic_delay(uint8_t t) { delayMicroseconds(t); }
+
+  public:
+    SW_IIC(uint16_t sda, uint16_t scl);
+    // setSCL/SDA have to be called before begin()
+    void setSCL(uint16_t scl) { scl_pin = scl; }
+    void setSDA(uint16_t sda) { sda_pin = sda; }
+    void init();                // Initialize the IO port of IIC
+    void start();               // Send IIC start signal
+    void stop();                // Send IIC stop signal
+    void send_byte(uint8_t txd); // IIC sends a byte
+    uint8_t read_byte(bool ack); // IIC reads a byte
+    void send_ack(bool ack);            // IIC sends ACK or NACK signal
+    bool read_ack();
+};
+
+typedef struct __attribute__((__packed__)) {
+  uint8_t xl;
+  uint8_t xh;
+  uint8_t yl;
+  uint8_t yh;
+  uint8_t sizel;
+  uint8_t sizeh;
+  uint8_t reserved;
+  uint8_t track_id;
+} GT911_POINT;
+
+typedef union __attribute__((__packed__)) {
+  uint8_t map[42];
+  struct {
+    uint8_t status;    // 0x814E
+    uint8_t track_id;  // 0x814F
+
+    GT911_POINT point[5]; // [0]:0x8150 - 0x8157 / [1]:0x8158 - 0x815F / [2]:0x8160 - 0x8167 / [3]:0x8168 - 0x816F / [4]:0x8170 - 0x8177
+ } REG;
+} GT911_REG_MAP;
+
+class GT911 {
+  private:
+    static const uint8_t gt911_slave_address = GT911_SLAVE_ADDRESS;
+    static GT911_REG_MAP reg;
+    static SW_IIC sw_iic;
+    static void write_reg(uint16_t reg, uint8_t reg_len, uint8_t* w_data, uint8_t w_len);
+    static void read_reg(uint16_t reg, uint8_t reg_len, uint8_t* r_data, uint8_t r_len);
+
+  public:
+    static void Init();
+    static bool getFirstTouchPoint(int16_t *x, int16_t *y);
+    static bool getPoint(int16_t *x, int16_t *y);
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/tft_fsmc.cpp

@@ -0,0 +1,189 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../../inc/MarlinConfig.h"
+
+#if HAS_FSMC_TFT
+
+#include "tft_fsmc.h"
+#include "pinconfig.h"
+
+SRAM_HandleTypeDef TFT_FSMC::SRAMx;
+DMA_HandleTypeDef TFT_FSMC::DMAtx;
+LCD_CONTROLLER_TypeDef *TFT_FSMC::LCD;
+
+void TFT_FSMC::Init() {
+  uint32_t controllerAddress;
+  FSMC_NORSRAM_TimingTypeDef Timing, ExtTiming;
+
+  uint32_t NSBank = (uint32_t)pinmap_peripheral(digitalPinToPinName(TFT_CS_PIN), PinMap_FSMC_CS);
+
+  // Perform the SRAM1 memory initialization sequence
+  SRAMx.Instance = FSMC_NORSRAM_DEVICE;
+  SRAMx.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;
+  // SRAMx.Init
+  SRAMx.Init.NSBank = NSBank;
+  SRAMx.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;
+  SRAMx.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM;
+  SRAMx.Init.MemoryDataWidth = TERN(TFT_INTERFACE_FSMC_8BIT, FSMC_NORSRAM_MEM_BUS_WIDTH_8, FSMC_NORSRAM_MEM_BUS_WIDTH_16);
+  SRAMx.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_DISABLE;
+  SRAMx.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;
+  SRAMx.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;
+  SRAMx.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;
+  SRAMx.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;
+  SRAMx.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;
+  SRAMx.Init.ExtendedMode = FSMC_EXTENDED_MODE_ENABLE;
+  SRAMx.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;
+  SRAMx.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE;
+  #ifdef STM32F4xx
+    SRAMx.Init.PageSize = FSMC_PAGE_SIZE_NONE;
+  #endif
+  // Read Timing - relatively slow to ensure ID information is correctly read from TFT controller
+  // Can be decreases from 15-15-24 to 4-4-8 with risk of stability loss
+  Timing.AddressSetupTime = 15;
+  Timing.AddressHoldTime = 15;
+  Timing.DataSetupTime = 24;
+  Timing.BusTurnAroundDuration = 0;
+  Timing.CLKDivision = 16;
+  Timing.DataLatency = 17;
+  Timing.AccessMode = FSMC_ACCESS_MODE_A;
+  // Write Timing
+  // Can be decreases from 8-15-8 to 0-0-1 with risk of stability loss
+  ExtTiming.AddressSetupTime = 8;
+  ExtTiming.AddressHoldTime = 15;
+  ExtTiming.DataSetupTime = 8;
+  ExtTiming.BusTurnAroundDuration = 0;
+  ExtTiming.CLKDivision = 16;
+  ExtTiming.DataLatency = 17;
+  ExtTiming.AccessMode = FSMC_ACCESS_MODE_A;
+
+  __HAL_RCC_FSMC_CLK_ENABLE();
+
+  for (uint16_t i = 0; PinMap_FSMC[i].pin != NC; i++)
+    pinmap_pinout(PinMap_FSMC[i].pin, PinMap_FSMC);
+  pinmap_pinout(digitalPinToPinName(TFT_CS_PIN), PinMap_FSMC_CS);
+  pinmap_pinout(digitalPinToPinName(TFT_RS_PIN), PinMap_FSMC_RS);
+
+  controllerAddress = FSMC_BANK1_1;
+  #ifdef PF0
+    switch (NSBank) {
+      case FSMC_NORSRAM_BANK2: controllerAddress = FSMC_BANK1_2 ; break;
+      case FSMC_NORSRAM_BANK3: controllerAddress = FSMC_BANK1_3 ; break;
+      case FSMC_NORSRAM_BANK4: controllerAddress = FSMC_BANK1_4 ; break;
+    }
+  #endif
+
+  controllerAddress |= (uint32_t)pinmap_peripheral(digitalPinToPinName(TFT_RS_PIN), PinMap_FSMC_RS);
+
+  HAL_SRAM_Init(&SRAMx, &Timing, &ExtTiming);
+
+  __HAL_RCC_DMA2_CLK_ENABLE();
+
+  #ifdef STM32F1xx
+    DMAtx.Instance = DMA2_Channel1;
+  #elif defined(STM32F4xx)
+    DMAtx.Instance = DMA2_Stream0;
+    DMAtx.Init.Channel = DMA_CHANNEL_0;
+    DMAtx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
+    DMAtx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+    DMAtx.Init.MemBurst = DMA_MBURST_SINGLE;
+    DMAtx.Init.PeriphBurst = DMA_PBURST_SINGLE;
+  #endif
+
+  DMAtx.Init.Direction = DMA_MEMORY_TO_MEMORY;
+  DMAtx.Init.MemInc = DMA_MINC_DISABLE;
+  DMAtx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+  DMAtx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+  DMAtx.Init.Mode = DMA_NORMAL;
+  DMAtx.Init.Priority = DMA_PRIORITY_HIGH;
+
+  LCD = (LCD_CONTROLLER_TypeDef *)controllerAddress;
+}
+
+uint32_t TFT_FSMC::GetID() {
+  uint32_t id;
+  WriteReg(0);
+  id = LCD->RAM;
+
+  if (id == 0)
+    id = ReadID(LCD_READ_ID);
+  if ((id & 0xFFFF) == 0 || (id & 0xFFFF) == 0xFFFF)
+    id = ReadID(LCD_READ_ID4);
+  return id;
+}
+
+uint32_t TFT_FSMC::ReadID(tft_data_t Reg) {
+  uint32_t id;
+  WriteReg(Reg);
+  id = LCD->RAM; // dummy read
+  id = Reg << 24;
+  id |= (LCD->RAM & 0x00FF) << 16;
+  id |= (LCD->RAM & 0x00FF) << 8;
+  id |= LCD->RAM & 0x00FF;
+  return id;
+}
+
+bool TFT_FSMC::isBusy() {
+  #ifdef STM32F1xx
+    #define __IS_DMA_ENABLED(__HANDLE__)      ((__HANDLE__)->Instance->CCR & DMA_CCR_EN)
+    #define __IS_DMA_CONFIGURED(__HANDLE__)   ((__HANDLE__)->Instance->CPAR != 0)
+  #elif defined(STM32F4xx)
+    #define __IS_DMA_ENABLED(__HANDLE__)      ((__HANDLE__)->Instance->CR & DMA_SxCR_EN)
+    #define __IS_DMA_CONFIGURED(__HANDLE__)   ((__HANDLE__)->Instance->PAR != 0)
+  #endif
+
+  if (!__IS_DMA_CONFIGURED(&DMAtx)) return false;
+
+  // Check if DMA transfer error or transfer complete flags are set
+  if ((__HAL_DMA_GET_FLAG(&DMAtx, __HAL_DMA_GET_TE_FLAG_INDEX(&DMAtx)) == 0) && (__HAL_DMA_GET_FLAG(&DMAtx, __HAL_DMA_GET_TC_FLAG_INDEX(&DMAtx)) == 0)) return true;
+
+  __DSB();
+  Abort();
+  return false;
+}
+
+void TFT_FSMC::Abort() {
+  HAL_DMA_Abort(&DMAtx);  // Abort DMA transfer if any
+  HAL_DMA_DeInit(&DMAtx); // Deconfigure DMA
+}
+
+void TFT_FSMC::TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
+  DMAtx.Init.PeriphInc = MemoryIncrease;
+  HAL_DMA_Init(&DMAtx);
+  HAL_DMA_Start(&DMAtx, (uint32_t)Data, (uint32_t)&(LCD->RAM), Count);
+}
+
+void TFT_FSMC::Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
+  DMAtx.Init.PeriphInc = MemoryIncrease;
+  HAL_DMA_Init(&DMAtx);
+  DataTransferBegin();
+  HAL_DMA_Start(&DMAtx, (uint32_t)Data, (uint32_t)&(LCD->RAM), Count);
+  HAL_DMA_PollForTransfer(&DMAtx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+  Abort();
+}
+
+#endif // HAS_FSMC_TFT
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/tft_fsmc.h

@@ -0,0 +1,174 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../../inc/MarlinConfig.h"
+
+#ifdef STM32F1xx
+  #include "stm32f1xx_hal.h"
+#elif defined(STM32F4xx)
+  #include "stm32f4xx_hal.h"
+#else
+  #error "FSMC TFT is currently only supported on STM32F1 and STM32F4 hardware."
+#endif
+
+#ifndef LCD_READ_ID
+  #define LCD_READ_ID  0x04   // Read display identification information (0xD3 on ILI9341)
+#endif
+#ifndef LCD_READ_ID4
+  #define LCD_READ_ID4 0xD3   // Read display identification information (0xD3 on ILI9341)
+#endif
+
+#define DATASIZE_8BIT  SPI_DATASIZE_8BIT
+#define DATASIZE_16BIT SPI_DATASIZE_16BIT
+#define TFT_IO_DRIVER  TFT_FSMC
+#define DMA_MAX_WORDS  0xFFFF
+
+#define TFT_DATASIZE TERN(TFT_INTERFACE_FSMC_8BIT, DATASIZE_8BIT, DATASIZE_16BIT)
+typedef TERN(TFT_INTERFACE_FSMC_8BIT, uint8_t, uint16_t) tft_data_t;
+
+typedef struct {
+  __IO tft_data_t REG;
+  __IO tft_data_t RAM;
+} LCD_CONTROLLER_TypeDef;
+
+class TFT_FSMC {
+  private:
+    static SRAM_HandleTypeDef SRAMx;
+    static DMA_HandleTypeDef DMAtx;
+
+    static LCD_CONTROLLER_TypeDef *LCD;
+
+    static uint32_t ReadID(tft_data_t Reg);
+    static void Transmit(tft_data_t Data) { LCD->RAM = Data; __DSB(); }
+    static void Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
+    static void TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
+
+  public:
+    static void Init();
+    static uint32_t GetID();
+    static bool isBusy();
+    static void Abort();
+
+    static void DataTransferBegin(uint16_t DataWidth = TFT_DATASIZE) {}
+    static void DataTransferEnd() {};
+
+    static void WriteData(uint16_t Data) { Transmit(tft_data_t(Data)); }
+    static void WriteReg(uint16_t Reg) { LCD->REG = tft_data_t(Reg); __DSB(); }
+
+    static void WriteSequence_DMA(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_PINC_ENABLE, Data, Count); }
+    static void WriteMultiple_DMA(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_PINC_DISABLE, &Data, Count); }
+
+    static void WriteSequence(uint16_t *Data, uint16_t Count) { Transmit(DMA_PINC_ENABLE, Data, Count); }
+    static void WriteMultiple(uint16_t Color, uint32_t Count) {
+      while (Count > 0) {
+        Transmit(DMA_MINC_DISABLE, &Color, Count > DMA_MAX_WORDS ? DMA_MAX_WORDS : Count);
+        Count = Count > DMA_MAX_WORDS ? Count - DMA_MAX_WORDS : 0;
+      }
+    }
+};
+
+#ifdef STM32F1xx
+  #define FSMC_PIN_DATA   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)
+#elif defined(STM32F4xx)
+  #define FSMC_PIN_DATA   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF12_FSMC)
+  #define FSMC_BANK1_1    0x60000000U
+  #define FSMC_BANK1_2    0x64000000U
+  #define FSMC_BANK1_3    0x68000000U
+  #define FSMC_BANK1_4    0x6C000000U
+#else
+  #error No configuration for this MCU
+#endif
+
+const PinMap PinMap_FSMC[] = {
+  {PD_14,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D00
+  {PD_15,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D01
+  {PD_0,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D02
+  {PD_1,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D03
+  {PE_7,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D04
+  {PE_8,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D05
+  {PE_9,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D06
+  {PE_10,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D07
+  #if DISABLED(TFT_INTERFACE_FSMC_8BIT)
+    {PE_11,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D08
+    {PE_12,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D09
+    {PE_13,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D10
+    {PE_14,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D11
+    {PE_15,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D12
+    {PD_8,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D13
+    {PD_9,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D14
+    {PD_10,  FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_D15
+  #endif
+  {PD_4,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_NOE
+  {PD_5,   FSMC_NORSRAM_DEVICE, FSMC_PIN_DATA}, // FSMC_NWE
+  {NC,    NP,    0}
+};
+
+const PinMap PinMap_FSMC_CS[] = {
+  {PD_7,  (void *)FSMC_NORSRAM_BANK1, FSMC_PIN_DATA}, // FSMC_NE1
+  #ifdef PF0
+    {PG_9,  (void *)FSMC_NORSRAM_BANK2, FSMC_PIN_DATA}, // FSMC_NE2
+    {PG_10, (void *)FSMC_NORSRAM_BANK3, FSMC_PIN_DATA}, // FSMC_NE3
+    {PG_12, (void *)FSMC_NORSRAM_BANK4, FSMC_PIN_DATA}, // FSMC_NE4
+  #endif
+  {NC,    NP,    0}
+};
+
+#if ENABLED(TFT_INTERFACE_FSMC_8BIT)
+  #define FSMC_RS(A)  (void *)((2 << (A-1)) - 1)
+#else
+  #define FSMC_RS(A)  (void *)((2 << A) - 2)
+#endif
+
+const PinMap PinMap_FSMC_RS[] = {
+  #ifdef PF0
+    {PF_0,  FSMC_RS( 0), FSMC_PIN_DATA}, // FSMC_A0
+    {PF_1,  FSMC_RS( 1), FSMC_PIN_DATA}, // FSMC_A1
+    {PF_2,  FSMC_RS( 2), FSMC_PIN_DATA}, // FSMC_A2
+    {PF_3,  FSMC_RS( 3), FSMC_PIN_DATA}, // FSMC_A3
+    {PF_4,  FSMC_RS( 4), FSMC_PIN_DATA}, // FSMC_A4
+    {PF_5,  FSMC_RS( 5), FSMC_PIN_DATA}, // FSMC_A5
+    {PF_12, FSMC_RS( 6), FSMC_PIN_DATA}, // FSMC_A6
+    {PF_13, FSMC_RS( 7), FSMC_PIN_DATA}, // FSMC_A7
+    {PF_14, FSMC_RS( 8), FSMC_PIN_DATA}, // FSMC_A8
+    {PF_15, FSMC_RS( 9), FSMC_PIN_DATA}, // FSMC_A9
+    {PG_0,  FSMC_RS(10), FSMC_PIN_DATA}, // FSMC_A10
+    {PG_1,  FSMC_RS(11), FSMC_PIN_DATA}, // FSMC_A11
+    {PG_2,  FSMC_RS(12), FSMC_PIN_DATA}, // FSMC_A12
+    {PG_3,  FSMC_RS(13), FSMC_PIN_DATA}, // FSMC_A13
+    {PG_4,  FSMC_RS(14), FSMC_PIN_DATA}, // FSMC_A14
+    {PG_5,  FSMC_RS(15), FSMC_PIN_DATA}, // FSMC_A15
+  #endif
+  {PD_11, FSMC_RS(16), FSMC_PIN_DATA}, // FSMC_A16
+  {PD_12, FSMC_RS(17), FSMC_PIN_DATA}, // FSMC_A17
+  {PD_13, FSMC_RS(18), FSMC_PIN_DATA}, // FSMC_A18
+  {PE_3,  FSMC_RS(19), FSMC_PIN_DATA}, // FSMC_A19
+  {PE_4,  FSMC_RS(20), FSMC_PIN_DATA}, // FSMC_A20
+  {PE_5,  FSMC_RS(21), FSMC_PIN_DATA}, // FSMC_A21
+  {PE_6,  FSMC_RS(22), FSMC_PIN_DATA}, // FSMC_A22
+  {PE_2,  FSMC_RS(23), FSMC_PIN_DATA}, // FSMC_A23
+  #ifdef PF0
+    {PG_13, FSMC_RS(24), FSMC_PIN_DATA}, // FSMC_A24
+    {PG_14, FSMC_RS(25), FSMC_PIN_DATA}, // FSMC_A25
+  #endif
+  {NC,    NP,    0}
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/tft_ltdc.cpp

@@ -0,0 +1,389 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../../inc/MarlinConfig.h"
+
+#if HAS_LTDC_TFT
+
+#include "tft_ltdc.h"
+#include "pinconfig.h"
+
+#define FRAME_BUFFER_ADDRESS 0XC0000000  // SDRAM address
+
+#define SDRAM_TIMEOUT                            ((uint32_t)0xFFFF)
+#define REFRESH_COUNT                            ((uint32_t)0x02A5)  // SDRAM refresh counter
+
+#define SDRAM_MODEREG_BURST_LENGTH_1             ((uint16_t)0x0000)
+#define SDRAM_MODEREG_BURST_LENGTH_2             ((uint16_t)0x0001)
+#define SDRAM_MODEREG_BURST_LENGTH_4             ((uint16_t)0x0002)
+#define SDRAM_MODEREG_BURST_LENGTH_8             ((uint16_t)0x0004)
+#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL      ((uint16_t)0x0000)
+#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED     ((uint16_t)0x0008)
+#define SDRAM_MODEREG_CAS_LATENCY_2              ((uint16_t)0x0020)
+#define SDRAM_MODEREG_CAS_LATENCY_3              ((uint16_t)0x0030)
+#define SDRAM_MODEREG_OPERATING_MODE_STANDARD    ((uint16_t)0x0000)
+#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000)
+#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE     ((uint16_t)0x0200)
+
+void SDRAM_Initialization_Sequence(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM_CommandTypeDef *Command) {
+
+  __IO uint32_t tmpmrd =0;
+  /* Step 1:  Configure a clock configuration enable command */
+  Command->CommandMode = FMC_SDRAM_CMD_CLK_ENABLE;
+  Command->CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+  Command->AutoRefreshNumber = 1;
+  Command->ModeRegisterDefinition = 0;
+  /* Send the command */
+  HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);
+
+  /* Step 2: Insert 100 us minimum delay */
+  /* Inserted delay is equal to 1 ms due to systick time base unit (ms) */
+  HAL_Delay(1);
+
+  /* Step 3: Configure a PALL (precharge all) command */
+  Command->CommandMode = FMC_SDRAM_CMD_PALL;
+  Command->CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+  Command->AutoRefreshNumber = 1;
+  Command->ModeRegisterDefinition = 0;
+  /* Send the command */
+  HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);
+
+  /* Step 4 : Configure a Auto-Refresh command */
+  Command->CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
+  Command->CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+  Command->AutoRefreshNumber = 8;
+  Command->ModeRegisterDefinition = 0;
+  /* Send the command */
+  HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);
+
+  /* Step 5: Program the external memory mode register */
+  tmpmrd = (uint32_t)(SDRAM_MODEREG_BURST_LENGTH_1          |
+                      SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL   |
+                      SDRAM_MODEREG_CAS_LATENCY_2           |
+                      SDRAM_MODEREG_OPERATING_MODE_STANDARD |
+                      SDRAM_MODEREG_WRITEBURST_MODE_SINGLE);
+
+  Command->CommandMode = FMC_SDRAM_CMD_LOAD_MODE;
+  Command->CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+  Command->AutoRefreshNumber = 1;
+  Command->ModeRegisterDefinition = tmpmrd;
+  /* Send the command */
+  HAL_SDRAM_SendCommand(hsdram, Command, SDRAM_TIMEOUT);
+
+  /* Step 6: Set the refresh rate counter */
+  /* Set the device refresh rate */
+  HAL_SDRAM_ProgramRefreshRate(hsdram, REFRESH_COUNT);
+}
+
+void SDRAM_Config() {
+
+  __HAL_RCC_SYSCFG_CLK_ENABLE();
+  __HAL_RCC_FMC_CLK_ENABLE();
+
+  SDRAM_HandleTypeDef      hsdram;
+  FMC_SDRAM_TimingTypeDef  SDRAM_Timing;
+  FMC_SDRAM_CommandTypeDef command;
+
+  /* Configure the SDRAM device */
+  hsdram.Instance = FMC_SDRAM_DEVICE;
+  hsdram.Init.SDBank             = FMC_SDRAM_BANK1;
+  hsdram.Init.ColumnBitsNumber   = FMC_SDRAM_COLUMN_BITS_NUM_9;
+  hsdram.Init.RowBitsNumber      = FMC_SDRAM_ROW_BITS_NUM_13;
+  hsdram.Init.MemoryDataWidth    = FMC_SDRAM_MEM_BUS_WIDTH_16;
+  hsdram.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
+  hsdram.Init.CASLatency         = FMC_SDRAM_CAS_LATENCY_2;
+  hsdram.Init.WriteProtection    = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
+  hsdram.Init.SDClockPeriod      = FMC_SDRAM_CLOCK_PERIOD_2;
+  hsdram.Init.ReadBurst          = FMC_SDRAM_RBURST_ENABLE;
+  hsdram.Init.ReadPipeDelay      = FMC_SDRAM_RPIPE_DELAY_0;
+
+  /* Timing configuration for 100Mhz as SDRAM clock frequency (System clock is up to 200Mhz) */
+  SDRAM_Timing.LoadToActiveDelay    = 2;
+  SDRAM_Timing.ExitSelfRefreshDelay = 8;
+  SDRAM_Timing.SelfRefreshTime      = 6;
+  SDRAM_Timing.RowCycleDelay        = 6;
+  SDRAM_Timing.WriteRecoveryTime    = 2;
+  SDRAM_Timing.RPDelay              = 2;
+  SDRAM_Timing.RCDDelay             = 2;
+
+  /* Initialize the SDRAM controller */
+  if (HAL_SDRAM_Init(&hsdram, &SDRAM_Timing) != HAL_OK)
+  {
+    /* Initialization Error */
+  }
+
+  /* Program the SDRAM external device */
+  SDRAM_Initialization_Sequence(&hsdram, &command);
+}
+
+void LTDC_Config() {
+
+  __HAL_RCC_LTDC_CLK_ENABLE();
+  __HAL_RCC_DMA2D_CLK_ENABLE();
+
+  RCC_PeriphCLKInitTypeDef  PeriphClkInitStruct;
+
+  /* The PLL3R is configured to provide the LTDC PCLK clock */
+  /* PLL3_VCO Input = HSE_VALUE / PLL3M = 25Mhz / 5 = 5 Mhz */
+  /* PLL3_VCO Output = PLL3_VCO Input * PLL3N = 5Mhz * 160 = 800 Mhz */
+  /* PLLLCDCLK = PLL3_VCO Output/PLL3R = 800Mhz / 16 = 50Mhz */
+  /* LTDC clock frequency = PLLLCDCLK = 50 Mhz */
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
+  PeriphClkInitStruct.PLL3.PLL3M = 5;
+  PeriphClkInitStruct.PLL3.PLL3N = 160;
+  PeriphClkInitStruct.PLL3.PLL3FRACN = 0;
+  PeriphClkInitStruct.PLL3.PLL3P = 2;
+  PeriphClkInitStruct.PLL3.PLL3Q = 2;
+  PeriphClkInitStruct.PLL3.PLL3R = (800 / LTDC_LCD_CLK);
+  PeriphClkInitStruct.PLL3.PLL3VCOSEL = RCC_PLL3VCOWIDE;
+  PeriphClkInitStruct.PLL3.PLL3RGE = RCC_PLL3VCIRANGE_2;
+  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+  LTDC_HandleTypeDef hltdc_F;
+  LTDC_LayerCfgTypeDef pLayerCfg;
+
+  /* LTDC Initialization -------------------------------------------------------*/
+
+  /* Polarity configuration */
+  /* Initialize the horizontal synchronization polarity as active low */
+  hltdc_F.Init.HSPolarity = LTDC_HSPOLARITY_AL;
+  /* Initialize the vertical synchronization polarity as active low */
+  hltdc_F.Init.VSPolarity = LTDC_VSPOLARITY_AL;
+  /* Initialize the data enable polarity as active low */
+  hltdc_F.Init.DEPolarity = LTDC_DEPOLARITY_AL;
+  /* Initialize the pixel clock polarity as input pixel clock */
+  hltdc_F.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
+
+  /* Timing configuration */
+  hltdc_F.Init.HorizontalSync = (LTDC_LCD_HSYNC - 1);
+  hltdc_F.Init.VerticalSync = (LTDC_LCD_VSYNC - 1);
+  hltdc_F.Init.AccumulatedHBP = (LTDC_LCD_HSYNC + LTDC_LCD_HBP - 1);
+  hltdc_F.Init.AccumulatedVBP = (LTDC_LCD_VSYNC + LTDC_LCD_VBP - 1);
+  hltdc_F.Init.AccumulatedActiveH = (TFT_HEIGHT + LTDC_LCD_VSYNC + LTDC_LCD_VBP - 1);
+  hltdc_F.Init.AccumulatedActiveW = (TFT_WIDTH + LTDC_LCD_HSYNC + LTDC_LCD_HBP - 1);
+  hltdc_F.Init.TotalHeigh = (TFT_HEIGHT + LTDC_LCD_VSYNC + LTDC_LCD_VBP + LTDC_LCD_VFP - 1);
+  hltdc_F.Init.TotalWidth = (TFT_WIDTH + LTDC_LCD_HSYNC + LTDC_LCD_HBP + LTDC_LCD_HFP - 1);
+
+  /* Configure R,G,B component values for LCD background color : all black background */
+  hltdc_F.Init.Backcolor.Blue = 0;
+  hltdc_F.Init.Backcolor.Green = 0;
+  hltdc_F.Init.Backcolor.Red = 0;
+
+  hltdc_F.Instance = LTDC;
+
+  /* Layer0 Configuration ------------------------------------------------------*/
+
+  /* Windowing configuration */
+  pLayerCfg.WindowX0 = 0;
+  pLayerCfg.WindowX1 = TFT_WIDTH;
+  pLayerCfg.WindowY0 = 0;
+  pLayerCfg.WindowY1 = TFT_HEIGHT;
+
+  /* Pixel Format configuration*/
+  pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
+
+  /* Start Address configuration : frame buffer is located at SDRAM memory */
+  pLayerCfg.FBStartAdress = (uint32_t)(FRAME_BUFFER_ADDRESS);
+
+  /* Alpha constant (255 == totally opaque) */
+  pLayerCfg.Alpha = 255;
+
+  /* Default Color configuration (configure A,R,G,B component values) : no background color */
+  pLayerCfg.Alpha0 = 0; /* fully transparent */
+  pLayerCfg.Backcolor.Blue = 0;
+  pLayerCfg.Backcolor.Green = 0;
+  pLayerCfg.Backcolor.Red = 0;
+
+  /* Configure blending factors */
+  pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
+  pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
+
+  /* Configure the number of lines and number of pixels per line */
+  pLayerCfg.ImageWidth  = TFT_WIDTH;
+  pLayerCfg.ImageHeight = TFT_HEIGHT;
+
+  /* Configure the LTDC */
+  if (HAL_LTDC_Init(&hltdc_F) != HAL_OK)
+  {
+    /* Initialization Error */
+  }
+
+  /* Configure the Layer*/
+  if (HAL_LTDC_ConfigLayer(&hltdc_F, &pLayerCfg, 0) != HAL_OK)
+  {
+    /* Initialization Error */
+  }
+}
+
+uint16_t TFT_LTDC::x_min = 0;
+uint16_t TFT_LTDC::x_max = 0;
+uint16_t TFT_LTDC::y_min = 0;
+uint16_t TFT_LTDC::y_max = 0;
+uint16_t TFT_LTDC::x_cur = 0;
+uint16_t TFT_LTDC::y_cur = 0;
+uint8_t TFT_LTDC::reg = 0;
+volatile uint16_t* TFT_LTDC::framebuffer = (volatile uint16_t* )FRAME_BUFFER_ADDRESS;
+
+void TFT_LTDC::Init() {
+
+  // SDRAM pins init
+  for (uint16_t i = 0; PinMap_SDRAM[i].pin != NC; i++)
+    pinmap_pinout(PinMap_SDRAM[i].pin, PinMap_SDRAM);
+
+  // SDRAM peripheral config
+  SDRAM_Config();
+
+  // LTDC pins init
+  for (uint16_t i = 0; PinMap_LTDC[i].pin != NC; i++)
+    pinmap_pinout(PinMap_LTDC[i].pin, PinMap_LTDC);
+
+  // LTDC peripheral config
+  LTDC_Config();
+}
+
+uint32_t TFT_LTDC::GetID() {
+  return 0xABAB;
+}
+
+uint32_t TFT_LTDC::ReadID(tft_data_t Reg) {
+  return 0xABAB;
+}
+
+bool TFT_LTDC::isBusy() {
+  return false;
+}
+
+uint16_t TFT_LTDC::ReadPoint(uint16_t x, uint16_t y) {
+  return framebuffer[(TFT_WIDTH * y) + x];
+}
+
+void TFT_LTDC::DrawPoint(uint16_t x, uint16_t y, uint16_t color) {
+  framebuffer[(TFT_WIDTH * y) + x] = color;
+}
+
+void TFT_LTDC::DrawRect(uint16_t sx, uint16_t sy, uint16_t ex, uint16_t ey, uint16_t color) {
+
+  if (sx == ex || sy == ey) return;
+
+  uint16_t offline = TFT_WIDTH - (ex - sx);
+  uint32_t addr = (uint32_t)&framebuffer[(TFT_WIDTH * sy) + sx];
+
+  CBI(DMA2D->CR, 0);
+  DMA2D->CR = 3 << 16;
+  DMA2D->OPFCCR = 0X02;
+  DMA2D->OOR = offline;
+  DMA2D->OMAR = addr;
+  DMA2D->NLR = (ey - sy) | ((ex - sx) << 16);
+  DMA2D->OCOLR = color;
+  SBI(DMA2D->CR, 0);
+
+  uint32_t timeout = 0;
+  while (!TEST(DMA2D->ISR, 1)) {
+    timeout++;
+    if (timeout > 0x1FFFFF) break;
+  }
+  SBI(DMA2D->IFCR, 1);
+}
+
+void TFT_LTDC::DrawImage(uint16_t sx, uint16_t sy, uint16_t ex, uint16_t ey, uint16_t *colors) {
+
+  if (sx == ex || sy == ey) return;
+
+  uint16_t offline = TFT_WIDTH - (ex - sx);
+  uint32_t addr = (uint32_t)&framebuffer[(TFT_WIDTH * sy) + sx];
+
+  CBI(DMA2D->CR, 0);
+  DMA2D->CR = 0 << 16;
+  DMA2D->FGPFCCR = 0X02;
+  DMA2D->FGOR = 0;
+  DMA2D->OOR = offline;
+  DMA2D->FGMAR = (uint32_t)colors;
+  DMA2D->OMAR = addr;
+  DMA2D->NLR = (ey - sy) | ((ex - sx) << 16);
+  SBI(DMA2D->CR, 0);
+
+  uint32_t timeout = 0;
+  while (!TEST(DMA2D->ISR, 1)) {
+    timeout++;
+    if (timeout > 0x1FFFFF) break;
+  }
+  SBI(DMA2D->IFCR, 1);
+}
+
+void TFT_LTDC::WriteData(uint16_t data) {
+  switch (reg) {
+    case 0x01: x_cur = x_min = data; return;
+    case 0x02: x_max = data; return;
+    case 0x03: y_cur = y_min = data; return;
+    case 0x04: y_max = data; return;
+  }
+  Transmit(data);
+}
+
+void TFT_LTDC::Transmit(tft_data_t Data) {
+  DrawPoint(x_cur, y_cur, Data);
+  x_cur++;
+  if (x_cur > x_max) {
+    x_cur = x_min;
+    y_cur++;
+    if (y_cur > y_max) y_cur = y_min;
+  }
+}
+
+void TFT_LTDC::WriteReg(uint16_t Reg) {
+  reg = Reg;
+}
+
+void TFT_LTDC::Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
+
+  while (x_cur != x_min && Count) {
+    Transmit(*Data);
+    if (MemoryIncrease == DMA_PINC_ENABLE) Data++;
+    Count--;
+  }
+
+  uint16_t width = x_max - x_min + 1;
+  uint16_t height = Count / width;
+  uint16_t x_end_cnt = Count - (width * height);
+
+  if (height) {
+    if (MemoryIncrease == DMA_PINC_ENABLE) {
+      DrawImage(x_min, y_cur, x_min + width, y_cur + height, Data);
+      Data += width * height;
+    }
+    else
+      DrawRect(x_min, y_cur, x_min + width, y_cur + height, *Data);
+    y_cur += height;
+  }
+
+  while (x_end_cnt) {
+    Transmit(*Data);
+    if (MemoryIncrease == DMA_PINC_ENABLE) Data++;
+    x_end_cnt--;
+  }
+}
+
+#endif // HAS_LTDC_TFT
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/tft_ltdc.h

@@ -0,0 +1,158 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../../inc/MarlinConfig.h"
+
+#ifdef STM32H7xx
+  #include "stm32h7xx_hal.h"
+#else
+  #error "LTDC TFT is currently only supported on STM32H7 hardware."
+#endif
+
+#define DATASIZE_8BIT  SPI_DATASIZE_8BIT
+#define DATASIZE_16BIT SPI_DATASIZE_16BIT
+#define TFT_IO_DRIVER  TFT_LTDC
+#define DMA_MAX_WORDS  0xFFFF
+
+#define TFT_DATASIZE DATASIZE_16BIT
+typedef uint16_t tft_data_t;
+
+class TFT_LTDC {
+  private:
+    static volatile uint16_t *framebuffer;
+    static uint16_t x_min, x_max, y_min, y_max, x_cur, y_cur;
+    static uint8_t reg;
+
+    static uint32_t ReadID(tft_data_t Reg);
+
+    static uint16_t ReadPoint(uint16_t x, uint16_t y);
+    static void DrawPoint(uint16_t x, uint16_t y, uint16_t color);
+    static void DrawRect(uint16_t sx, uint16_t sy, uint16_t ex, uint16_t ey, uint16_t color);
+    static void DrawImage(uint16_t sx, uint16_t sy, uint16_t ex, uint16_t ey, uint16_t *colors);
+    static void Transmit(tft_data_t Data);
+    static void Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
+
+  public:
+    static void Init();
+    static uint32_t GetID();
+    static bool isBusy();
+    static void Abort() { /*__HAL_DMA_DISABLE(&DMAtx);*/ }
+
+    static void DataTransferBegin(uint16_t DataWidth = TFT_DATASIZE) {}
+    static void DataTransferEnd() {};
+
+    static void WriteData(uint16_t Data);
+    static void WriteReg(uint16_t Reg);
+
+    // Non-blocking DMA data transfer is not implemented for LTDC interface
+    inline static void WriteSequence_DMA(uint16_t *Data, uint16_t Count) { WriteSequence(Data, Count); }
+    inline static void WriteMultiple_DMA(uint16_t Color, uint16_t Count) { WriteMultiple(Color, Count); }
+
+    static void WriteSequence(uint16_t *Data, uint16_t Count) { Transmit(DMA_PINC_ENABLE, Data, Count); }
+    static void WriteMultiple(uint16_t Color, uint32_t Count) {
+      while (Count > 0) {
+        Transmit(DMA_PINC_DISABLE, &Color, Count > DMA_MAX_WORDS ? DMA_MAX_WORDS : Count);
+        Count = Count > DMA_MAX_WORDS ? Count - DMA_MAX_WORDS : 0;
+      }
+    }
+};
+
+const PinMap PinMap_LTDC[] = {
+  {PF_10, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_DE
+  {PG_7,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_CLK
+  {PI_9,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_VSYNC
+  {PI_10, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_HSYNC
+
+  {PG_6,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_R7
+  {PH_12, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_R6
+  {PH_11, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_R5
+  {PH_10, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_R4
+  {PH_9,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_R3
+
+  {PI_2,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_G7
+  {PI_1,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_G6
+  {PI_0,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_G5
+  {PH_15, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_G4
+  {PH_14, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_G3
+  {PH_13, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_G2
+
+  {PI_7,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_B7
+  {PI_6,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_B6
+  {PI_5,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_B5
+  {PI_4,  LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_B4
+  {PG_11, LTDC, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_LTDC)}, // LCD_B3
+  {NC,    NP,    0}
+};
+
+const PinMap PinMap_SDRAM[] = {
+  {PC_0,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_SDNWE
+  {PC_2,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_SDNE0
+  {PC_3,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_SDCKE0
+  {PE_0,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_NBL0
+  {PE_1,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_NBL1
+  {PF_11, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_SDNRAS
+  {PG_8,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_SDCLK
+  {PG_15, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_SDNCAS
+  {PG_4,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_BA0
+  {PG_5,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_BA1
+  {PD_14, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D0
+  {PD_15, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D1
+  {PD_0,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D2
+  {PD_1,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D3
+  {PE_7,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D4
+  {PE_8,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D5
+  {PE_9,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D6
+  {PE_10, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D7
+  {PE_11, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D8
+  {PE_12, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D9
+  {PE_13, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D10
+  {PE_14, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D11
+  {PE_15, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D12
+  {PD_8,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D13
+  {PD_9,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D14
+  {PD_10, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_D15
+  {PF_0,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A0
+  {PF_1,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A1
+  {PF_2,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A2
+  {PF_3,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A3
+  {PF_4,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A4
+  {PF_5,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A5
+  {PF_12, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A6
+  {PF_13, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A7
+  {PF_14, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A8
+  {PF_15, FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A9
+  {PG_0,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A10
+  {PG_1,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A11
+  {PG_2,  FMC_Bank1_R, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_FMC)}, // FMC_A12
+  {NC,    NP,    0}
+};
+
+const PinMap PinMap_QUADSPI[] = {
+  {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_CLK
+  {PB_10, QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_NCS
+  {PF_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_IO3
+  {PF_7,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_IO2
+  {PF_8,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO0
+  {PF_9,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO1
+  {NC,    NP,    0}
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/tft_spi.cpp

@@ -0,0 +1,289 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../../inc/MarlinConfig.h"
+
+#if HAS_SPI_TFT
+
+#include "tft_spi.h"
+#include "pinconfig.h"
+
+SPI_HandleTypeDef TFT_SPI::SPIx;
+DMA_HandleTypeDef TFT_SPI::DMAtx;
+
+void TFT_SPI::Init() {
+  SPI_TypeDef *spiInstance;
+
+  OUT_WRITE(TFT_A0_PIN, HIGH);
+  OUT_WRITE(TFT_CS_PIN, HIGH);
+
+  if ((spiInstance = (SPI_TypeDef *)pinmap_peripheral(digitalPinToPinName(TFT_SCK_PIN),  PinMap_SPI_SCLK)) == NP) return;
+  if (spiInstance != (SPI_TypeDef *)pinmap_peripheral(digitalPinToPinName(TFT_MOSI_PIN), PinMap_SPI_MOSI)) return;
+
+  #if PIN_EXISTS(TFT_MISO) && TFT_MISO_PIN != TFT_MOSI_PIN
+    if (spiInstance != (SPI_TypeDef *)pinmap_peripheral(digitalPinToPinName(TFT_MISO_PIN), PinMap_SPI_MISO)) return;
+  #endif
+
+  SPIx.Instance                = spiInstance;
+  SPIx.State                   = HAL_SPI_STATE_RESET;
+  SPIx.Init.NSS                = SPI_NSS_SOFT;
+  SPIx.Init.Mode               = SPI_MODE_MASTER;
+  SPIx.Init.Direction          = (TFT_MISO_PIN == TFT_MOSI_PIN) ? SPI_DIRECTION_1LINE : SPI_DIRECTION_2LINES;
+  SPIx.Init.BaudRatePrescaler  = SPI_BAUDRATEPRESCALER_2;
+  SPIx.Init.CLKPhase           = SPI_PHASE_1EDGE;
+  SPIx.Init.CLKPolarity        = SPI_POLARITY_LOW;
+  SPIx.Init.DataSize           = SPI_DATASIZE_8BIT;
+  SPIx.Init.FirstBit           = SPI_FIRSTBIT_MSB;
+  SPIx.Init.TIMode             = SPI_TIMODE_DISABLE;
+  SPIx.Init.CRCCalculation     = SPI_CRCCALCULATION_DISABLE;
+  SPIx.Init.CRCPolynomial      = 10;
+
+  pinmap_pinout(digitalPinToPinName(TFT_SCK_PIN), PinMap_SPI_SCLK);
+  pinmap_pinout(digitalPinToPinName(TFT_MOSI_PIN), PinMap_SPI_MOSI);
+  #if PIN_EXISTS(TFT_MISO) && TFT_MISO_PIN != TFT_MOSI_PIN
+    pinmap_pinout(digitalPinToPinName(TFT_MISO_PIN), PinMap_SPI_MISO);
+  #endif
+  pin_PullConfig(get_GPIO_Port(STM_PORT(digitalPinToPinName(TFT_SCK_PIN))), STM_LL_GPIO_PIN(digitalPinToPinName(TFT_SCK_PIN)), GPIO_PULLDOWN);
+
+  #ifdef SPI1_BASE
+    if (SPIx.Instance == SPI1) {
+      __HAL_RCC_SPI1_CLK_ENABLE();
+      #ifdef STM32F1xx
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        DMAtx.Instance = DMA1_Channel3;
+      #elif defined(STM32F4xx)
+        __HAL_RCC_DMA2_CLK_ENABLE();
+        DMAtx.Instance = DMA2_Stream3;
+        DMAtx.Init.Channel = DMA_CHANNEL_3;
+      #endif
+      SPIx.Init.BaudRatePrescaler  = SPI_BAUDRATEPRESCALER_4;
+    }
+  #endif
+  #ifdef SPI2_BASE
+    if (SPIx.Instance == SPI2) {
+      __HAL_RCC_SPI2_CLK_ENABLE();
+      #ifdef STM32F1xx
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        DMAtx.Instance = DMA1_Channel5;
+      #elif defined(STM32F4xx)
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        DMAtx.Instance = DMA1_Stream4;
+        DMAtx.Init.Channel = DMA_CHANNEL_0;
+      #endif
+    }
+  #endif
+  #ifdef SPI3_BASE
+    if (SPIx.Instance == SPI3) {
+      __HAL_RCC_SPI3_CLK_ENABLE();
+      #ifdef STM32F1xx
+        __HAL_RCC_DMA2_CLK_ENABLE();
+        DMAtx.Instance = DMA2_Channel2;
+      #elif defined(STM32F4xx)
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        DMAtx.Instance = DMA1_Stream5;
+        DMAtx.Init.Channel = DMA_CHANNEL_0;
+      #endif
+    }
+  #endif
+
+  HAL_SPI_Init(&SPIx);
+
+  DMAtx.Init.Direction = DMA_MEMORY_TO_PERIPH;
+  DMAtx.Init.PeriphInc = DMA_PINC_DISABLE;
+  DMAtx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+  DMAtx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+  DMAtx.Init.Mode = DMA_NORMAL;
+  DMAtx.Init.Priority = DMA_PRIORITY_LOW;
+  #ifdef STM32F4xx
+    DMAtx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+  #endif
+}
+
+void TFT_SPI::DataTransferBegin(uint16_t DataSize) {
+  SPIx.Init.DataSize = DataSize == DATASIZE_8BIT ?  SPI_DATASIZE_8BIT : SPI_DATASIZE_16BIT;
+  HAL_SPI_Init(&SPIx);
+  WRITE(TFT_CS_PIN, LOW);
+}
+
+#ifdef TFT_DEFAULT_DRIVER
+  #include "../../../lcd/tft_io/tft_ids.h"
+#endif
+
+uint32_t TFT_SPI::GetID() {
+  uint32_t id;
+  id = ReadID(LCD_READ_ID);
+  if ((id & 0xFFFF) == 0 || (id & 0xFFFF) == 0xFFFF) {
+    id = ReadID(LCD_READ_ID4);
+    #ifdef TFT_DEFAULT_DRIVER
+      if ((id & 0xFFFF) == 0 || (id & 0xFFFF) == 0xFFFF)
+        id = TFT_DEFAULT_DRIVER;
+    #endif
+   }
+  return id;
+}
+
+uint32_t TFT_SPI::ReadID(uint16_t Reg) {
+  uint32_t Data = 0;
+  #if PIN_EXISTS(TFT_MISO)
+    uint32_t BaudRatePrescaler = SPIx.Init.BaudRatePrescaler;
+    uint32_t i;
+
+    SPIx.Init.BaudRatePrescaler = SPIx.Instance == SPI1 ? SPI_BAUDRATEPRESCALER_8 : SPI_BAUDRATEPRESCALER_4;
+    DataTransferBegin(DATASIZE_8BIT);
+    WriteReg(Reg);
+
+    if (SPIx.Init.Direction == SPI_DIRECTION_1LINE) SPI_1LINE_RX(&SPIx);
+    __HAL_SPI_ENABLE(&SPIx);
+
+    for (i = 0; i < 4; i++) {
+      #if TFT_MISO_PIN != TFT_MOSI_PIN
+        while (!__HAL_SPI_GET_FLAG(&SPIx, SPI_FLAG_TXE)) {}
+        SPIx.Instance->DR = 0;
+      #endif
+      while (!__HAL_SPI_GET_FLAG(&SPIx, SPI_FLAG_RXNE)) {}
+      Data = (Data << 8) | SPIx.Instance->DR;
+    }
+
+    DataTransferEnd();
+
+    SPIx.Init.BaudRatePrescaler   = BaudRatePrescaler;
+  #endif
+
+  return Data >> 7;
+}
+
+bool TFT_SPI::isBusy() {
+  #ifdef STM32F1xx
+    #define __IS_DMA_ENABLED(__HANDLE__)      ((__HANDLE__)->Instance->CCR & DMA_CCR_EN)
+    #define __IS_DMA_CONFIGURED(__HANDLE__)   ((__HANDLE__)->Instance->CPAR != 0)
+  #elif defined(STM32F4xx)
+    #define __IS_DMA_ENABLED(__HANDLE__)      ((__HANDLE__)->Instance->CR & DMA_SxCR_EN)
+    #define __IS_DMA_CONFIGURED(__HANDLE__)   ((__HANDLE__)->Instance->PAR != 0)
+  #endif
+
+  if (!__IS_DMA_CONFIGURED(&DMAtx)) return false;
+
+  if (__HAL_DMA_GET_FLAG(&DMAtx, __HAL_DMA_GET_TE_FLAG_INDEX(&DMAtx))) {
+    // You should not be here - DMA transfer error flag is set
+    // Abort DMA transfer and release SPI
+  }
+  else {
+    // Check if DMA transfer completed flag is set
+    if (__HAL_DMA_GET_FLAG(&DMAtx, __HAL_DMA_GET_TC_FLAG_INDEX(&DMAtx)) == 0) return true;
+    // Check if SPI transmit butter is empty and SPI is idle
+    if ((!__HAL_SPI_GET_FLAG(&SPIx, SPI_FLAG_TXE)) || (__HAL_SPI_GET_FLAG(&SPIx, SPI_FLAG_BSY))) return true;
+  }
+
+  Abort();
+  return false;
+}
+
+void TFT_SPI::Abort() {
+  HAL_DMA_Abort(&DMAtx);  // Abort DMA transfer if any
+  HAL_DMA_DeInit(&DMAtx);
+
+  CLEAR_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);
+
+  DataTransferEnd();      // Stop SPI and deselect CS
+}
+
+void TFT_SPI::Transmit(uint16_t Data) {
+  #if TFT_MISO_PIN == TFT_MOSI_PIN
+    SPI_1LINE_TX(&SPIx);
+  #endif
+
+  __HAL_SPI_ENABLE(&SPIx);
+
+  SPIx.Instance->DR = Data;
+
+  while (!__HAL_SPI_GET_FLAG(&SPIx, SPI_FLAG_TXE)) {}
+  while ( __HAL_SPI_GET_FLAG(&SPIx, SPI_FLAG_BSY)) {}
+
+  #if TFT_MISO_PIN != TFT_MOSI_PIN
+    __HAL_SPI_CLEAR_OVRFLAG(&SPIx);   // Clear overrun flag in 2 Lines communication mode because received data is not read
+  #endif
+}
+
+void TFT_SPI::TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
+  DMAtx.Init.MemInc = MemoryIncrease;
+  HAL_DMA_Init(&DMAtx);
+
+  #if TFT_MISO_PIN == TFT_MOSI_PIN
+    SPI_1LINE_TX(&SPIx);
+  #endif
+
+  DataTransferBegin();
+
+  HAL_DMA_Start(&DMAtx, (uint32_t)Data, (uint32_t)&(SPIx.Instance->DR), Count);
+  __HAL_SPI_ENABLE(&SPIx);
+
+  SET_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);   // Enable Tx DMA Request
+
+  TERN_(TFT_SHARED_IO, while (isBusy()));
+}
+
+void TFT_SPI::Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
+  DMAtx.Init.MemInc = MemoryIncrease;
+  HAL_DMA_Init(&DMAtx);
+
+  if (TFT_MISO_PIN == TFT_MOSI_PIN)
+    SPI_1LINE_TX(&SPIx);
+
+  DataTransferBegin();
+
+  HAL_DMA_Start(&DMAtx, (uint32_t)Data, (uint32_t)&(SPIx.Instance->DR), Count);
+  __HAL_SPI_ENABLE(&SPIx);
+
+  SET_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);   // Enable Tx DMA Request
+
+  HAL_DMA_PollForTransfer(&DMAtx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+  Abort();
+}
+
+#if ENABLED(USE_SPI_DMA_TC)
+  void TFT_SPI::TransmitDMA_IT(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
+
+    DMAtx.Init.MemInc = MemoryIncrease;
+    HAL_DMA_Init(&DMAtx);
+
+    if (TFT_MISO_PIN == TFT_MOSI_PIN)
+      SPI_1LINE_TX(&SPIx);
+
+    DataTransferBegin();
+
+    HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, 5, 0);
+    HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
+    HAL_DMA_Start_IT(&DMAtx, (uint32_t)Data, (uint32_t)&(SPIx.Instance->DR), Count);
+    __HAL_SPI_ENABLE(&SPIx);
+
+    SET_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);   // Enable Tx DMA Request
+  }
+
+  extern "C" void DMA2_Stream3_IRQHandler(void) { TFT_SPI::DMA_IRQHandler(); }
+#endif
+
+#endif // HAS_SPI_TFT
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/tft_spi.h

@@ -0,0 +1,86 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#ifdef STM32F1xx
+  #include "stm32f1xx_hal.h"
+#elif defined(STM32F4xx)
+  #include "stm32f4xx_hal.h"
+#else
+  #error SPI TFT is currently only supported on STM32F1 and STM32F4 hardware.
+#endif
+
+#ifndef LCD_READ_ID
+  #define LCD_READ_ID 0x04   // Read display identification information (0xD3 on ILI9341)
+#endif
+#ifndef LCD_READ_ID4
+  #define LCD_READ_ID4 0xD3   // Read display identification information (0xD3 on ILI9341)
+#endif
+
+#define DATASIZE_8BIT  SPI_DATASIZE_8BIT
+#define DATASIZE_16BIT SPI_DATASIZE_16BIT
+#define DATASIZE_32BIT SPI_DATASIZE_32BIT
+#define TFT_IO_DRIVER  TFT_SPI
+#define DMA_MAX_WORDS  0xFFFF
+
+class TFT_SPI {
+private:
+  static SPI_HandleTypeDef SPIx;
+  static DMA_HandleTypeDef DMAtx;
+
+  static uint32_t ReadID(uint16_t Reg);
+  static void Transmit(uint16_t Data);
+  static void Transmit(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
+  static void TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
+  #if ENABLED(USE_SPI_DMA_TC)
+    static void TransmitDMA_IT(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count);
+  #endif
+
+public:
+  static void Init();
+  static uint32_t GetID();
+  static bool isBusy();
+  static void Abort();
+
+  static void DataTransferBegin(uint16_t DataWidth = DATASIZE_16BIT);
+  static void DataTransferEnd() { WRITE(TFT_CS_PIN, HIGH); __HAL_SPI_DISABLE(&SPIx); };
+  static void DataTransferAbort();
+
+  static void WriteData(uint16_t Data) { Transmit(Data); }
+  static void WriteReg(uint16_t Reg) { WRITE(TFT_A0_PIN, LOW); Transmit(Reg); WRITE(TFT_A0_PIN, HIGH); }
+
+  static void WriteSequence_DMA(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_MINC_ENABLE, Data, Count); }
+  static void WriteMultiple_DMA(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_MINC_DISABLE, &Data, Count); }
+
+  #if ENABLED(USE_SPI_DMA_TC)
+    static void WriteSequenceIT(uint16_t *Data, uint16_t Count) { TransmitDMA_IT(DMA_MINC_ENABLE, Data, Count); }
+    inline static void DMA_IRQHandler() { HAL_DMA_IRQHandler(&TFT_SPI::DMAtx); }
+  #endif
+
+  static void WriteSequence(uint16_t *Data, uint16_t Count) { Transmit(DMA_MINC_ENABLE, Data, Count); }
+  static void WriteMultiple(uint16_t Color, uint32_t Count) {
+    while (Count > 0) {
+      Transmit(DMA_MINC_DISABLE, &Color, Count > DMA_MAX_WORDS ? DMA_MAX_WORDS : Count);
+      Count = Count > DMA_MAX_WORDS ? Count - DMA_MAX_WORDS : 0;
+    }
+  }
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/xpt2046.cpp

@@ -0,0 +1,173 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../../inc/MarlinConfig.h"
+
+#if HAS_TFT_XPT2046 || HAS_RES_TOUCH_BUTTONS
+
+#include "xpt2046.h"
+#include "pinconfig.h"
+
+uint16_t delta(uint16_t a, uint16_t b) { return a > b ? a - b : b - a; }
+
+SPI_HandleTypeDef XPT2046::SPIx;
+
+void XPT2046::Init() {
+  SPI_TypeDef *spiInstance;
+
+  OUT_WRITE(TOUCH_CS_PIN, HIGH);
+
+  #if PIN_EXISTS(TOUCH_INT)
+    // Optional Pendrive interrupt pin
+    SET_INPUT(TOUCH_INT_PIN);
+  #endif
+
+  spiInstance      = (SPI_TypeDef *)pinmap_peripheral(digitalPinToPinName(TOUCH_SCK_PIN),  PinMap_SPI_SCLK);
+  if (spiInstance != (SPI_TypeDef *)pinmap_peripheral(digitalPinToPinName(TOUCH_MOSI_PIN), PinMap_SPI_MOSI)) spiInstance = NP;
+  if (spiInstance != (SPI_TypeDef *)pinmap_peripheral(digitalPinToPinName(TOUCH_MISO_PIN), PinMap_SPI_MISO)) spiInstance = NP;
+
+  SPIx.Instance                = spiInstance;
+
+  if (SPIx.Instance) {
+    SPIx.State                   = HAL_SPI_STATE_RESET;
+    SPIx.Init.NSS                = SPI_NSS_SOFT;
+    SPIx.Init.Mode               = SPI_MODE_MASTER;
+    SPIx.Init.Direction          = SPI_DIRECTION_2LINES;
+    SPIx.Init.BaudRatePrescaler  = SPI_BAUDRATEPRESCALER_8;
+    SPIx.Init.CLKPhase           = SPI_PHASE_2EDGE;
+    SPIx.Init.CLKPolarity        = SPI_POLARITY_HIGH;
+    SPIx.Init.DataSize           = SPI_DATASIZE_8BIT;
+    SPIx.Init.FirstBit           = SPI_FIRSTBIT_MSB;
+    SPIx.Init.TIMode             = SPI_TIMODE_DISABLE;
+    SPIx.Init.CRCCalculation     = SPI_CRCCALCULATION_DISABLE;
+    SPIx.Init.CRCPolynomial      = 10;
+
+    pinmap_pinout(digitalPinToPinName(TOUCH_SCK_PIN), PinMap_SPI_SCLK);
+    pinmap_pinout(digitalPinToPinName(TOUCH_MOSI_PIN), PinMap_SPI_MOSI);
+    pinmap_pinout(digitalPinToPinName(TOUCH_MISO_PIN), PinMap_SPI_MISO);
+
+    #ifdef SPI1_BASE
+      if (SPIx.Instance == SPI1) {
+        __HAL_RCC_SPI1_CLK_ENABLE();
+        SPIx.Init.BaudRatePrescaler  = SPI_BAUDRATEPRESCALER_16;
+      }
+    #endif
+    #ifdef SPI2_BASE
+      if (SPIx.Instance == SPI2) {
+        __HAL_RCC_SPI2_CLK_ENABLE();
+      }
+    #endif
+    #ifdef SPI3_BASE
+      if (SPIx.Instance == SPI3) {
+        __HAL_RCC_SPI3_CLK_ENABLE();
+      }
+    #endif
+  }
+  else {
+    SPIx.Instance = nullptr;
+    SET_INPUT(TOUCH_MISO_PIN);
+    SET_OUTPUT(TOUCH_MOSI_PIN);
+    SET_OUTPUT(TOUCH_SCK_PIN);
+  }
+
+  getRawData(XPT2046_Z1);
+}
+
+bool XPT2046::isTouched() {
+  return isBusy() ? false : (
+    #if PIN_EXISTS(TOUCH_INT)
+      READ(TOUCH_INT_PIN) != HIGH
+    #else
+      getRawData(XPT2046_Z1) >= XPT2046_Z1_THRESHOLD
+    #endif
+  );
+}
+
+bool XPT2046::getRawPoint(int16_t *x, int16_t *y) {
+  if (isBusy()) return false;
+  if (!isTouched()) return false;
+  *x = getRawData(XPT2046_X);
+  *y = getRawData(XPT2046_Y);
+  return isTouched();
+}
+
+uint16_t XPT2046::getRawData(const XPTCoordinate coordinate) {
+  uint16_t data[3];
+
+  DataTransferBegin();
+
+  for (uint16_t i = 0; i < 3 ; i++) {
+    IO(coordinate);
+    data[i] = (IO() << 4) | (IO() >> 4);
+  }
+
+  DataTransferEnd();
+
+  uint16_t delta01 = delta(data[0], data[1]);
+  uint16_t delta02 = delta(data[0], data[2]);
+  uint16_t delta12 = delta(data[1], data[2]);
+
+  if (delta01 > delta02 || delta01 > delta12) {
+    if (delta02 > delta12)
+      data[0] = data[2];
+    else
+      data[1] = data[2];
+  }
+
+  return (data[0] + data[1]) >> 1;
+}
+
+uint16_t XPT2046::HardwareIO(uint16_t data) {
+  __HAL_SPI_ENABLE(&SPIx);
+  while ((SPIx.Instance->SR & SPI_FLAG_TXE) != SPI_FLAG_TXE) {}
+  SPIx.Instance->DR = data;
+  while ((SPIx.Instance->SR & SPI_FLAG_RXNE) != SPI_FLAG_RXNE) {}
+  __HAL_SPI_DISABLE(&SPIx);
+
+  return SPIx.Instance->DR;
+}
+
+uint16_t XPT2046::SoftwareIO(uint16_t data) {
+  uint16_t result = 0;
+
+  for (uint8_t j = 0x80; j > 0; j >>= 1) {
+    WRITE(TOUCH_SCK_PIN, LOW);
+    __DSB();
+    WRITE(TOUCH_MOSI_PIN, data & j ? HIGH : LOW);
+    __DSB();
+    if (READ(TOUCH_MISO_PIN)) result |= j;
+    __DSB();
+    WRITE(TOUCH_SCK_PIN, HIGH);
+    __DSB();
+  }
+  WRITE(TOUCH_SCK_PIN, LOW);
+  __DSB();
+
+  return result;
+}
+
+#endif // HAS_TFT_XPT2046
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/tft/xpt2046.h

@@ -0,0 +1,81 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#ifdef STM32F1xx
+  #include <stm32f1xx_hal.h>
+#elif defined(STM32F4xx)
+  #include <stm32f4xx_hal.h>
+#endif
+
+#include "../../../inc/MarlinConfig.h"
+
+// Not using regular SPI interface by default to avoid SPI mode conflicts with other SPI devices
+
+#if !PIN_EXISTS(TOUCH_MISO)
+  #error "TOUCH_MISO_PIN is not defined."
+#elif !PIN_EXISTS(TOUCH_MOSI)
+  #error "TOUCH_MOSI_PIN is not defined."
+#elif !PIN_EXISTS(TOUCH_SCK)
+  #error "TOUCH_SCK_PIN is not defined."
+#elif !PIN_EXISTS(TOUCH_CS)
+  #error "TOUCH_CS_PIN is not defined."
+#endif
+
+#ifndef TOUCH_INT_PIN
+  #define TOUCH_INT_PIN  -1
+#endif
+
+#define XPT2046_DFR_MODE        0x00
+#define XPT2046_SER_MODE        0x04
+#define XPT2046_CONTROL         0x80
+
+enum XPTCoordinate : uint8_t {
+  XPT2046_X  = 0x10 | XPT2046_CONTROL | XPT2046_DFR_MODE,
+  XPT2046_Y  = 0x50 | XPT2046_CONTROL | XPT2046_DFR_MODE,
+  XPT2046_Z1 = 0x30 | XPT2046_CONTROL | XPT2046_DFR_MODE,
+  XPT2046_Z2 = 0x40 | XPT2046_CONTROL | XPT2046_DFR_MODE,
+};
+
+#ifndef XPT2046_Z1_THRESHOLD
+  #define XPT2046_Z1_THRESHOLD 10
+#endif
+
+class XPT2046 {
+private:
+  static SPI_HandleTypeDef SPIx;
+
+  static bool isBusy() { return false; }
+
+  static uint16_t getRawData(const XPTCoordinate coordinate);
+  static bool isTouched();
+
+  static void DataTransferBegin() { if (SPIx.Instance) { HAL_SPI_Init(&SPIx); } WRITE(TOUCH_CS_PIN, LOW); };
+  static void DataTransferEnd() { WRITE(TOUCH_CS_PIN, HIGH); };
+  static uint16_t HardwareIO(uint16_t data);
+  static uint16_t SoftwareIO(uint16_t data);
+  static uint16_t IO(uint16_t data = 0) { return SPIx.Instance ? HardwareIO(data) : SoftwareIO(data); }
+
+public:
+  static void Init();
+  static bool getRawPoint(int16_t *x, int16_t *y);
+};

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/timers.cpp

@@ -0,0 +1,330 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+// ------------------------
+// Local defines
+// ------------------------
+
+// Default timer priorities. Override by specifying alternate priorities in the board pins file.
+// The TONE timer is not present here, as it currently cannot be set programmatically. It is set
+// by defining TIM_IRQ_PRIO in the variant.h or platformio.ini file, which adjusts the default
+// priority for STM32 HardwareTimer objects.
+#define SWSERIAL_TIMER_IRQ_PRIO_DEFAULT  1 // Requires tight bit timing to communicate reliably with TMC drivers
+#define SERVO_TIMER_IRQ_PRIO_DEFAULT     1 // Requires tight PWM timing to control a BLTouch reliably
+#define STEP_TIMER_IRQ_PRIO_DEFAULT      2
+#define TEMP_TIMER_IRQ_PRIO_DEFAULT     14 // Low priority avoids interference with other hardware and timers
+
+#ifndef STEP_TIMER_IRQ_PRIO
+  #define STEP_TIMER_IRQ_PRIO STEP_TIMER_IRQ_PRIO_DEFAULT
+#endif
+#ifndef TEMP_TIMER_IRQ_PRIO
+  #define TEMP_TIMER_IRQ_PRIO TEMP_TIMER_IRQ_PRIO_DEFAULT
+#endif
+#if HAS_TMC_SW_SERIAL
+  #include <SoftwareSerial.h>
+  #ifndef SWSERIAL_TIMER_IRQ_PRIO
+    #define SWSERIAL_TIMER_IRQ_PRIO SWSERIAL_TIMER_IRQ_PRIO_DEFAULT
+  #endif
+#endif
+#if HAS_SERVOS
+  #include "Servo.h"
+  #ifndef SERVO_TIMER_IRQ_PRIO
+    #define SERVO_TIMER_IRQ_PRIO SERVO_TIMER_IRQ_PRIO_DEFAULT
+  #endif
+#endif
+#if ENABLED(SPEAKER)
+  // Ensure the default timer priority is somewhere between the STEP and TEMP priorities.
+  // The STM32 framework defaults to interrupt 14 for all timers. This should be increased so that
+  // timing-sensitive operations such as speaker output are not impacted by the long-running
+  // temperature ISR. This must be defined in the platformio.ini file or the board's variant.h,
+  // so that it will be consumed by framework code.
+  #if !(TIM_IRQ_PRIO > STEP_TIMER_IRQ_PRIO && TIM_IRQ_PRIO < TEMP_TIMER_IRQ_PRIO)
+    #error "Default timer interrupt priority is unspecified or set to a value which may degrade performance."
+  #endif
+#endif
+
+#if defined(STM32F0xx) || defined(STM32G0xx)
+  #define MCU_STEP_TIMER 16
+  #define MCU_TEMP_TIMER 17
+#elif defined(STM32F1xx)
+  #define MCU_STEP_TIMER  4
+  #define MCU_TEMP_TIMER  2
+#elif defined(STM32F401xC) || defined(STM32F401xE)
+  #define MCU_STEP_TIMER  9           // STM32F401 has no TIM6, TIM7, or TIM8
+  #define MCU_TEMP_TIMER 10
+#elif defined(STM32F4xx) || defined(STM32F7xx) || defined(STM32H7xx)
+  #define MCU_STEP_TIMER  6
+  #define MCU_TEMP_TIMER 14           // TIM7 is consumed by Software Serial if used.
+#endif
+
+#ifndef HAL_TIMER_RATE
+  #define HAL_TIMER_RATE GetStepperTimerClkFreq()
+#endif
+
+#ifndef STEP_TIMER
+  #define STEP_TIMER MCU_STEP_TIMER
+#endif
+#ifndef TEMP_TIMER
+  #define TEMP_TIMER MCU_TEMP_TIMER
+#endif
+
+#define __TIMER_DEV(X) TIM##X
+#define _TIMER_DEV(X) __TIMER_DEV(X)
+#define STEP_TIMER_DEV _TIMER_DEV(STEP_TIMER)
+#define TEMP_TIMER_DEV _TIMER_DEV(TEMP_TIMER)
+
+// --------------------------------------------------------------------------
+// Local defines
+// --------------------------------------------------------------------------
+
+#define NUM_HARDWARE_TIMERS 2
+
+// --------------------------------------------------------------------------
+// Private Variables
+// --------------------------------------------------------------------------
+
+HardwareTimer *timer_instance[NUM_HARDWARE_TIMERS] = { nullptr };
+
+// ------------------------
+// Public functions
+// ------------------------
+
+uint32_t GetStepperTimerClkFreq() {
+  // Timer input clocks vary between devices, and in some cases between timers on the same device.
+  // Retrieve at runtime to ensure device compatibility. Cache result to avoid repeated overhead.
+  static uint32_t clkfreq = timer_instance[MF_TIMER_STEP]->getTimerClkFreq();
+  return clkfreq;
+}
+
+// frequency is in Hertz
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
+  if (!HAL_timer_initialized(timer_num)) {
+    switch (timer_num) {
+      case MF_TIMER_STEP: // STEPPER TIMER - use a 32bit timer if possible
+        timer_instance[timer_num] = new HardwareTimer(STEP_TIMER_DEV);
+        /* Set the prescaler to the final desired value.
+         * This will change the effective ISR callback frequency but when
+         * HAL_timer_start(timer_num=0) is called in the core for the first time
+         * the real frequency isn't important as long as, after boot, the ISR
+         * gets called with the correct prescaler and count register. So here
+         * we set the prescaler to the correct, final value and ignore the frequency
+         * asked. We will call back the ISR in 1 second to start at full speed.
+         *
+         * The proper fix, however, would be a correct initialization OR a
+         * HAL_timer_change(const uint8_t timer_num, const uint32_t frequency)
+         * which changes the prescaler when an IRQ frequency change is needed
+         * (for example when steppers are turned on)
+         */
+
+        timer_instance[timer_num]->setPrescaleFactor(STEPPER_TIMER_PRESCALE); //the -1 is done internally
+        timer_instance[timer_num]->setOverflow(_MIN(hal_timer_t(HAL_TIMER_TYPE_MAX), (HAL_TIMER_RATE) / (STEPPER_TIMER_PRESCALE) /* /frequency */), TICK_FORMAT);
+        break;
+      case MF_TIMER_TEMP: // TEMP TIMER - any available 16bit timer
+        timer_instance[timer_num] = new HardwareTimer(TEMP_TIMER_DEV);
+        // The prescale factor is computed automatically for HERTZ_FORMAT
+        timer_instance[timer_num]->setOverflow(frequency, HERTZ_FORMAT);
+        break;
+    }
+
+    // Disable preload. Leaving it default-enabled can cause the timer to stop if it happens
+    // to exit the ISR after the start time for the next interrupt has already passed.
+    timer_instance[timer_num]->setPreloadEnable(false);
+
+    HAL_timer_enable_interrupt(timer_num);
+
+    // Start the timer.
+    timer_instance[timer_num]->resume(); // First call to resume() MUST follow the attachInterrupt()
+
+    // This is fixed in Arduino_Core_STM32 1.8.
+    // These calls can be removed and replaced with
+    // timer_instance[timer_num]->setInterruptPriority
+    switch (timer_num) {
+      case MF_TIMER_STEP:
+        timer_instance[timer_num]->setInterruptPriority(STEP_TIMER_IRQ_PRIO, 0);
+        break;
+      case MF_TIMER_TEMP:
+        timer_instance[timer_num]->setInterruptPriority(TEMP_TIMER_IRQ_PRIO, 0);
+        break;
+    }
+  }
+}
+
+void HAL_timer_enable_interrupt(const uint8_t timer_num) {
+  if (HAL_timer_initialized(timer_num) && !timer_instance[timer_num]->hasInterrupt()) {
+    switch (timer_num) {
+      case MF_TIMER_STEP:
+        timer_instance[timer_num]->attachInterrupt(Step_Handler);
+        break;
+      case MF_TIMER_TEMP:
+        timer_instance[timer_num]->attachInterrupt(Temp_Handler);
+        break;
+    }
+  }
+}
+
+void HAL_timer_disable_interrupt(const uint8_t timer_num) {
+  if (HAL_timer_initialized(timer_num)) timer_instance[timer_num]->detachInterrupt();
+}
+
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
+  return HAL_timer_initialized(timer_num) && timer_instance[timer_num]->hasInterrupt();
+}
+
+void SetTimerInterruptPriorities() {
+  TERN_(HAS_TMC_SW_SERIAL, SoftwareSerial::setInterruptPriority(SWSERIAL_TIMER_IRQ_PRIO, 0));
+  TERN_(HAS_SERVOS, libServo::setInterruptPriority(SERVO_TIMER_IRQ_PRIO, 0));
+}
+
+// ------------------------
+// Detect timer conflicts
+// ------------------------
+
+// This list serves two purposes. Firstly, it facilitates build-time mapping between
+// variant-defined timer names (such as TIM1) and timer numbers. It also replicates
+// the order of timers used in the framework's SoftwareSerial.cpp. The first timer in
+// this list will be automatically used by SoftwareSerial if it is not already defined
+// in the board's variant or compiler options.
+static constexpr struct {uintptr_t base_address; int timer_number;} stm32_timer_map[] = {
+  #ifdef TIM18_BASE
+    { uintptr_t(TIM18), 18 },
+  #endif
+  #ifdef TIM7_BASE
+    { uintptr_t(TIM7),   7 },
+  #endif
+  #ifdef TIM6_BASE
+    { uintptr_t(TIM6),   6 },
+  #endif
+  #ifdef TIM22_BASE
+    { uintptr_t(TIM22), 22 },
+  #endif
+  #ifdef TIM21_BASE
+    { uintptr_t(TIM21), 21 },
+  #endif
+  #ifdef TIM17_BASE
+    { uintptr_t(TIM17), 17 },
+  #endif
+  #ifdef TIM16_BASE
+    { uintptr_t(TIM16), 16 },
+  #endif
+  #ifdef TIM15_BASE
+    { uintptr_t(TIM15), 15 },
+  #endif
+  #ifdef TIM14_BASE
+    { uintptr_t(TIM14), 14 },
+  #endif
+  #ifdef TIM13_BASE
+    { uintptr_t(TIM13), 13 },
+  #endif
+  #ifdef TIM11_BASE
+    { uintptr_t(TIM11), 11 },
+  #endif
+  #ifdef TIM10_BASE
+    { uintptr_t(TIM10), 10 },
+  #endif
+  #ifdef TIM12_BASE
+    { uintptr_t(TIM12), 12 },
+  #endif
+  #ifdef TIM19_BASE
+    { uintptr_t(TIM19), 19 },
+  #endif
+  #ifdef TIM9_BASE
+    { uintptr_t(TIM9),   9 },
+  #endif
+  #ifdef TIM5_BASE
+    { uintptr_t(TIM5),   5 },
+  #endif
+  #ifdef TIM4_BASE
+    { uintptr_t(TIM4),   4 },
+  #endif
+  #ifdef TIM3_BASE
+    { uintptr_t(TIM3),   3 },
+  #endif
+  #ifdef TIM2_BASE
+    { uintptr_t(TIM2),   2 },
+  #endif
+  #ifdef TIM20_BASE
+    { uintptr_t(TIM20), 20 },
+  #endif
+  #ifdef TIM8_BASE
+    { uintptr_t(TIM8),   8 },
+  #endif
+  #ifdef TIM1_BASE
+    { uintptr_t(TIM1),   1 }
+  #endif
+};
+
+// Convert from a timer base address to its integer timer number.
+static constexpr int get_timer_num_from_base_address(uintptr_t base_address) {
+  for (const auto &timer : stm32_timer_map)
+    if (timer.base_address == base_address) return timer.timer_number;
+  return 0;
+}
+
+// The platform's SoftwareSerial.cpp will use the first timer from stm32_timer_map.
+#if HAS_TMC_SW_SERIAL && !defined(TIMER_SERIAL)
+  #define  TIMER_SERIAL (stm32_timer_map[0].base_address)
+#endif
+
+// constexpr doesn't like using the base address pointers that timers evaluate to.
+// We can get away with casting them to uintptr_t, if we do so inside an array.
+// GCC will not currently do it directly to a uintptr_t.
+TERN_(HAS_TMC_SW_SERIAL, static constexpr uintptr_t timer_serial[] = {uintptr_t(TIMER_SERIAL)});
+TERN_(SPEAKER,           static constexpr uintptr_t timer_tone[]   = {uintptr_t(TIMER_TONE)});
+TERN_(HAS_SERVOS,        static constexpr uintptr_t timer_servo[]  = {uintptr_t(TIMER_SERVO)});
+
+enum TimerPurpose { TP_SERIAL, TP_TONE, TP_SERVO, TP_STEP, TP_TEMP };
+
+// List of timers, to enable checking for conflicts.
+// Includes the purpose of each timer to ease debugging when evaluating at build-time.
+// This cannot yet account for timers used for PWM output, such as for fans.
+static constexpr struct { TimerPurpose p; int t; } timers_in_use[] = {
+  #if HAS_TMC_SW_SERIAL
+    { TP_SERIAL, get_timer_num_from_base_address(timer_serial[0]) }, // Set in variant.h, or as a define in platformio.h if not present in variant.h
+  #endif
+  #if ENABLED(SPEAKER)
+    { TP_TONE, get_timer_num_from_base_address(timer_tone[0]) },     // Set in variant.h, or as a define in platformio.h if not present in variant.h
+  #endif
+  #if HAS_SERVOS
+    { TP_SERVO, get_timer_num_from_base_address(timer_servo[0]) },   // Set in variant.h, or as a define in platformio.h if not present in variant.h
+  #endif
+  { TP_STEP, STEP_TIMER },
+  { TP_TEMP, TEMP_TIMER },
+};
+
+static constexpr bool verify_no_timer_conflicts() {
+  for (uint8_t i = 0; i < COUNT(timers_in_use); ++i)
+    for (uint8_t j = i + 1; j < COUNT(timers_in_use); ++j)
+      if (timers_in_use[i].t == timers_in_use[j].t) return false;
+  return true;
+}
+
+// If this assertion fails at compile time, review the timers_in_use array.
+// If default_envs is defined properly in platformio.ini, VS Code can evaluate the array
+// when hovering over it, making it easy to identify the conflicting timers.
+static_assert(verify_no_timer_conflicts(), "One or more timer conflict detected. Examine \"timers_in_use\" to help identify conflict.");
+
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/timers.h

@@ -0,0 +1,120 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../inc/MarlinConfig.h"
+
+// ------------------------
+// Defines
+// ------------------------
+
+// STM32 timers may be 16 or 32 bit. Limiting HAL_TIMER_TYPE_MAX to 16 bits
+// avoids issues with STM32F0 MCUs, which seem to pause timers if UINT32_MAX
+// is written to the register. STM32F4 timers do not manifest this issue,
+// even when writing to 16 bit timers.
+//
+// The range of the timer can be queried at runtime using IS_TIM_32B_COUNTER_INSTANCE.
+// This is a more expensive check than a simple compile-time constant, so its
+// implementation is deferred until the desire for a 32-bit range outweighs the cost
+// of adding a run-time check and HAL_TIMER_TYPE_MAX is refactored to allow unique
+// values for each timer.
+#define hal_timer_t uint32_t
+#define HAL_TIMER_TYPE_MAX UINT16_MAX
+
+// Marlin timer_instance[] content (unrelated to timer selection)
+#define MF_TIMER_STEP       0  // Timer Index for Stepper
+#define MF_TIMER_TEMP       1  // Timer Index for Temperature
+#define MF_TIMER_PULSE      MF_TIMER_STEP
+
+#define TIMER_INDEX_(T) TIMER##T##_INDEX  // TIMER#_INDEX enums (timer_index_t) depend on TIM#_BASE defines.
+#define TIMER_INDEX(T) TIMER_INDEX_(T)    // Convert Timer ID to HardwareTimer_Handle index.
+
+#define TEMP_TIMER_FREQUENCY 1000   // Temperature::isr() is expected to be called at around 1kHz
+
+// TODO: get rid of manual rate/prescale/ticks/cycles taken for procedures in stepper.cpp
+#define STEPPER_TIMER_RATE 2000000 // 2 Mhz
+extern uint32_t GetStepperTimerClkFreq();
+#define STEPPER_TIMER_PRESCALE (GetStepperTimerClkFreq() / (STEPPER_TIMER_RATE))
+#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
+
+#define PULSE_TIMER_RATE STEPPER_TIMER_RATE
+#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
+
+#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(MF_TIMER_STEP)
+#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(MF_TIMER_STEP)
+#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(MF_TIMER_STEP)
+
+#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(MF_TIMER_TEMP)
+#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(MF_TIMER_TEMP)
+
+extern void Step_Handler();
+extern void Temp_Handler();
+
+#ifndef HAL_STEP_TIMER_ISR
+  #define HAL_STEP_TIMER_ISR() void Step_Handler()
+#endif
+#ifndef HAL_TEMP_TIMER_ISR
+  #define HAL_TEMP_TIMER_ISR() void Temp_Handler()
+#endif
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+extern HardwareTimer *timer_instance[];
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency);
+void HAL_timer_enable_interrupt(const uint8_t timer_num);
+void HAL_timer_disable_interrupt(const uint8_t timer_num);
+bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
+
+// Configure timer priorities for peripherals such as Software Serial or Servos.
+// Exposed here to allow all timer priority information to reside in timers.cpp
+void SetTimerInterruptPriorities();
+
+// FORCE_INLINE because these are used in performance-critical situations
+FORCE_INLINE bool HAL_timer_initialized(const uint8_t timer_num) {
+  return timer_instance[timer_num] != nullptr;
+}
+FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
+  return HAL_timer_initialized(timer_num) ? timer_instance[timer_num]->getCount() : 0;
+}
+
+// NOTE: Method name may be misleading.
+// STM32 has an Auto-Reload Register (ARR) as opposed to a "compare" register
+FORCE_INLINE static void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t overflow) {
+  if (HAL_timer_initialized(timer_num)) {
+    timer_instance[timer_num]->setOverflow(overflow + 1, TICK_FORMAT); // Value decremented by setOverflow()
+    // wiki: "force all registers (Autoreload, prescaler, compare) to be taken into account"
+    // So, if the new overflow value is less than the count it will trigger a rollover interrupt.
+    if (overflow < timer_instance[timer_num]->getCount())  // Added 'if' here because reports say it won't boot without it
+      timer_instance[timer_num]->refresh();
+  }
+}
+
+#define HAL_timer_isr_prologue(T) NOOP
+#define HAL_timer_isr_epilogue(T) NOOP

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/usb_host.cpp

@@ -0,0 +1,119 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfig.h"
+
+#if ALL(USE_OTG_USB_HOST, USBHOST)
+
+#include "usb_host.h"
+#include "../shared/Marduino.h"
+#include "usbh_core.h"
+#include "usbh_msc.h"
+
+USBH_HandleTypeDef hUsbHost;
+USBHost usb;
+BulkStorage bulk(&usb);
+
+static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id) {
+  switch(id) {
+    case HOST_USER_SELECT_CONFIGURATION:
+      //SERIAL_ECHOLNPGM("APPLICATION_SELECT_CONFIGURATION");
+      break;
+    case HOST_USER_DISCONNECTION:
+      //SERIAL_ECHOLNPGM("APPLICATION_DISCONNECT");
+      usb.setUsbTaskState(USB_STATE_INIT);
+      break;
+    case HOST_USER_CLASS_ACTIVE:
+      //SERIAL_ECHOLNPGM("APPLICATION_READY");
+      usb.setUsbTaskState(USB_STATE_RUNNING);
+      break;
+    case HOST_USER_CONNECTION:
+      break;
+    default:
+      break;
+  }
+}
+
+bool USBHost::start() {
+  if (USBH_Init(&hUsbHost, USBH_UserProcess, TERN(USE_USB_HS_IN_FS, HOST_HS, HOST_FS)) != USBH_OK) {
+    SERIAL_ECHOLNPGM("Error: USBH_Init");
+    return false;
+  }
+  if (USBH_RegisterClass(&hUsbHost, USBH_MSC_CLASS) != USBH_OK) {
+    SERIAL_ECHOLNPGM("Error: USBH_RegisterClass");
+    return false;
+  }
+  if (USBH_Start(&hUsbHost) != USBH_OK) {
+    SERIAL_ECHOLNPGM("Error: USBH_Start");
+    return false;
+  }
+  return true;
+}
+
+void USBHost::Task() {
+  USBH_Process(&hUsbHost);
+}
+
+uint8_t USBHost::getUsbTaskState() {
+  return usb_task_state;
+}
+
+void USBHost::setUsbTaskState(uint8_t state) {
+  usb_task_state = state;
+  if (usb_task_state == USB_STATE_RUNNING) {
+    MSC_LUNTypeDef info;
+    USBH_MSC_GetLUNInfo(&hUsbHost, usb.lun, &info);
+    capacity = info.capacity.block_nbr / 2000;
+    block_size = info.capacity.block_size;
+    block_count = info.capacity.block_nbr;
+    //SERIAL_ECHOLNPGM("info.capacity.block_nbr : %ld\n", info.capacity.block_nbr);
+    //SERIAL_ECHOLNPGM("info.capacity.block_size: %d\n", info.capacity.block_size);
+    //SERIAL_ECHOLNPGM("capacity                : %d MB\n", capacity);
+  }
+};
+
+bool BulkStorage::LUNIsGood(uint8_t t) {
+  return USBH_MSC_IsReady(&hUsbHost) && USBH_MSC_UnitIsReady(&hUsbHost, t);
+}
+
+uint32_t BulkStorage::GetCapacity(uint8_t lun) {
+  return usb->block_count;
+}
+
+uint16_t BulkStorage::GetSectorSize(uint8_t lun) {
+  return usb->block_size;
+}
+
+uint8_t BulkStorage::Read(uint8_t lun, uint32_t addr, uint16_t bsize, uint8_t blocks, uint8_t *buf) {
+  return USBH_MSC_Read(&hUsbHost, lun, addr, buf, blocks) != USBH_OK;
+}
+
+uint8_t BulkStorage::Write(uint8_t lun, uint32_t addr, uint16_t bsize, uint8_t blocks, const uint8_t * buf) {
+  return USBH_MSC_Write(&hUsbHost, lun, addr, const_cast<uint8_t*>(buf), blocks) != USBH_OK;
+}
+
+#endif // USE_OTG_USB_HOST && USBHOST
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/usb_host.h

@@ -0,0 +1,60 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include <stdint.h>
+
+typedef enum {
+  USB_STATE_INIT,
+  USB_STATE_ERROR,
+  USB_STATE_RUNNING,
+} usb_state_t;
+
+class USBHost {
+public:
+  bool start();
+  void Task();
+  uint8_t getUsbTaskState();
+  void setUsbTaskState(uint8_t state);
+  uint8_t regRd(uint8_t reg) { return 0x0; };
+  uint8_t usb_task_state = USB_STATE_INIT;
+  uint8_t lun = 0;
+  uint32_t capacity = 0;
+  uint16_t block_size = 0;
+  uint32_t block_count = 0;
+};
+
+class BulkStorage {
+public:
+  BulkStorage(USBHost *usb) : usb(usb) {};
+
+  bool LUNIsGood(uint8_t t);
+  uint32_t GetCapacity(uint8_t lun);
+  uint16_t GetSectorSize(uint8_t lun);
+  uint8_t Read(uint8_t lun, uint32_t addr, uint16_t bsize, uint8_t blocks, uint8_t *buf);
+  uint8_t Write(uint8_t lun, uint32_t addr, uint16_t bsize, uint8_t blocks, const uint8_t * buf);
+
+  USBHost *usb;
+};
+
+extern USBHost usb;
+extern BulkStorage bulk;

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/usb_serial.cpp

@@ -0,0 +1,60 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../platforms.h"
+
+#ifdef HAL_STM32
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(EMERGENCY_PARSER) && (USBD_USE_CDC || USBD_USE_CDC_MSC)
+
+#include "usb_serial.h"
+#include "../../feature/e_parser.h"
+
+EmergencyParser::State emergency_state = EmergencyParser::State::EP_RESET;
+
+int8_t (*USBD_CDC_Receive_original) (uint8_t *Buf, uint32_t *Len) = nullptr;
+
+static int8_t USBD_CDC_Receive_hook(uint8_t *Buf, uint32_t *Len) {
+  for (uint32_t i = 0; i < *Len; i++)
+    emergency_parser.update(emergency_state, Buf[i]);
+  return USBD_CDC_Receive_original(Buf, Len);
+}
+
+typedef struct _USBD_CDC_Itf {
+  int8_t (* Init)(void);
+  int8_t (* DeInit)(void);
+  int8_t (* Control)(uint8_t cmd, uint8_t *pbuf, uint16_t length);
+  int8_t (* Receive)(uint8_t *Buf, uint32_t *Len);
+  int8_t (* Transferred)(void);
+} USBD_CDC_ItfTypeDef;
+
+extern USBD_CDC_ItfTypeDef USBD_CDC_fops;
+
+void USB_Hook_init() {
+  USBD_CDC_Receive_original = USBD_CDC_fops.Receive;
+  USBD_CDC_fops.Receive = USBD_CDC_Receive_hook;
+}
+
+#endif // EMERGENCY_PARSER && USBD_USE_CDC
+#endif // HAL_STM32

creality-ender3/Marlin-2.1.2.4/Marlin/src/HAL/STM32/usb_serial.h

@@ -0,0 +1,24 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+void USB_Hook_init();