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Firwmare updater for the Einsy external flash memory,

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to be used as a storage for localization strings.

Hacked into the avrdude Arduino STK500 (not STK500v2) protocol.
This commit is contained in:
bubnikv
2018-06-19 18:46:37 +02:00
parent 5414f7379d
commit 7863412687
4 changed files with 146 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files
xs/src/avrdude/stk500.c
+76 -47
View File
@@ -716,11 +716,14 @@ static int stk500_loadaddr(PROGRAMMER * pgm, AVRMEM * mem, unsigned int addr)
}
buf[0] = Cmnd_STK_LOAD_ADDRESS;
buf[1] = addr & 0xff;
buf[2] = (addr >> 8) & 0xff;
buf[3] = Sync_CRC_EOP;
stk500_send(pgm, buf, 4);
// Workaround for the infamous ';' bug in the Prusa3D usb to serial converter.
// Send the binary data by nibbles to avoid transmitting the ';' character.
buf[1] = addr & 0x0f;
buf[2] = addr & 0xf0;
buf[3] = (addr >> 8) & 0x0f;
buf[4] = (addr >> 8) & 0xf0;
buf[5] = Sync_CRC_EOP;
stk500_send(pgm, buf, 6);
if (stk500_recv(pgm, buf, 1) < 0)
return -1;
@@ -765,7 +768,9 @@ static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
int block_size;
int tries;
unsigned int n;
unsigned int i;
unsigned int i, j;
unsigned int prusa3d_semicolon_workaround_round = 0;
bool has_semicolon = false;
if (strcmp(m->desc, "flash") == 0) {
memtype = 'F';
@@ -806,44 +811,64 @@ static int stk500_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
tries++;
stk500_loadaddr(pgm, m, addr/a_div);
/* build command block and avoid multiple send commands as it leads to a crash
of the silabs usb serial driver on mac os x */
i = 0;
buf[i++] = Cmnd_STK_PROG_PAGE;
buf[i++] = (block_size >> 8) & 0xff;
buf[i++] = block_size & 0xff;
buf[i++] = memtype;
memcpy(&buf[i], &m->buf[addr], block_size);
i += block_size;
buf[i++] = Sync_CRC_EOP;
stk500_send( pgm, buf, i);
for (i = 0; i < n_bytes; ++ i)
if (m->buf[addr + i] == ';') {
has_semicolon = true;
break;
}
if (stk500_recv(pgm, buf, 1) < 0)
return -1;
if (buf[0] == Resp_STK_NOSYNC) {
if (tries > 33) {
avrdude_message(MSG_INFO, "\n%s: stk500_paged_write(): can't get into sync\n",
progname);
return -3;
for (prusa3d_semicolon_workaround_round = 0; prusa3d_semicolon_workaround_round < (has_semicolon ? 2 : 1); ++ prusa3d_semicolon_workaround_round) {
/* build command block and avoid multiple send commands as it leads to a crash
of the silabs usb serial driver on mac os x */
i = 0;
buf[i++] = Cmnd_STK_PROG_PAGE;
// Workaround for the infamous ';' bug in the Prusa3D usb to serial converter.
// Send the binary data by nibbles to avoid transmitting the ';' character.
buf[i++] = (block_size >> 8) & 0xf0;
buf[i++] = (block_size >> 8) & 0x0f;
buf[i++] = block_size & 0xf0;
buf[i++] = block_size & 0x0f;
buf[i++] = memtype;
if (has_semicolon) {
for (j = 0; j < block_size; ++i, ++ j) {
buf[i] = m->buf[addr + j];
if (buf[i] == ';')
buf[i] |= (prusa3d_semicolon_workaround_round ? 0xf0 : 0x0f);
}
} else {
memcpy(&buf[i], &m->buf[addr], block_size);
i += block_size;
}
buf[i++] = Sync_CRC_EOP;
stk500_send( pgm, buf, i);
if (stk500_recv(pgm, buf, 1) < 0)
return -1;
if (buf[0] == Resp_STK_NOSYNC) {
if (tries > 33) {
avrdude_message(MSG_INFO, "\n%s: stk500_paged_write(): can't get into sync\n",
progname);
return -3;
}
if (stk500_getsync(pgm) < 0)
return -1;
goto retry;
}
else if (buf[0] != Resp_STK_INSYNC) {
avrdude_message(MSG_INFO, "\n%s: stk500_paged_write(): (a) protocol error, "
"expect=0x%02x, resp=0x%02x\n",
progname, Resp_STK_INSYNC, buf[0]);
return -4;
}
if (stk500_recv(pgm, buf, 1) < 0)
return -1;
if (buf[0] != Resp_STK_OK) {
avrdude_message(MSG_INFO, "\n%s: stk500_paged_write(): (a) protocol error, "
"expect=0x%02x, resp=0x%02x\n",
progname, Resp_STK_INSYNC, buf[0]);
return -5;
}
if (stk500_getsync(pgm) < 0)
return -1;
goto retry;
}
else if (buf[0] != Resp_STK_INSYNC) {
avrdude_message(MSG_INFO, "\n%s: stk500_paged_write(): (a) protocol error, "
"expect=0x%02x, resp=0x%02x\n",
progname, Resp_STK_INSYNC, buf[0]);
return -4;
}
if (stk500_recv(pgm, buf, 1) < 0)
return -1;
if (buf[0] != Resp_STK_OK) {
avrdude_message(MSG_INFO, "\n%s: stk500_paged_write(): (a) protocol error, "
"expect=0x%02x, resp=0x%02x\n",
progname, Resp_STK_INSYNC, buf[0]);
return -5;
}
}
@@ -893,11 +918,15 @@ static int stk500_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
tries++;
stk500_loadaddr(pgm, m, addr/a_div);
buf[0] = Cmnd_STK_READ_PAGE;
buf[1] = (block_size >> 8) & 0xff;
buf[2] = block_size & 0xff;
buf[3] = memtype;
buf[4] = Sync_CRC_EOP;
stk500_send(pgm, buf, 5);
// Workaround for the infamous ';' bug in the Prusa3D usb to serial converter.
// Send the binary data by nibbles to avoid transmitting the ';' character.
buf[1] = (block_size >> 8) & 0xf0;
buf[2] = (block_size >> 8) & 0x0f;
buf[3] = block_size & 0xf0;
buf[4] = block_size & 0x0f;
buf[5] = memtype;
buf[6] = Sync_CRC_EOP;
stk500_send(pgm, buf, 7);
if (stk500_recv(pgm, buf, 1) < 0)
return -1;