ezri/qmk_firmware
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Read serial number from flash

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Write there with OpenOCD and GDB:

```
(gdb) monitor flash write_bank 0 serial.bin 0x00ff000
Writing 18 bytes starting at 0xff000
wrote 18 bytes from file serial.bin to flash bank 0 at offset 0x000ff000 in 0.206887s (0.085 KiB/s)
```

Signed-off-by: Daniel Schaefer <dhs@frame.work>
This commit is contained in:
Daniel Schaefer 2023-01-16 17:01:55 +08:00
parent c97f3cd6d8
commit 3f5388f97f
1 changed files with 16 additions and 0 deletions
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16
keyboards/lotus/factory.c
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@ -10,6 +10,7 @@
enum factory_commands {
f_emu_keypress = 0x01, // Next byte is keycode
f_adc = 0x03, // ADC trigger
f_serialnum = 0x04, // Read device serial number
f_bootloader = 0xFE,
};
@ -26,11 +27,19 @@ void emulate_rgb_keycode_press(uint16_t target_keycode) {
}
#endif
#define FLASH_OFFSET 0x10000000
#define LAST_4K_BLOCK 0xff000
#define SERIALNUM_LEN 18
void handle_factory_command(uint8_t *data) {
uint8_t factory_command_id = data[0];
uint8_t *command_data = &(data[1]);
uprintf("handle_factory_command(command: %u)\n", factory_command_id);
char serialnum[SERIALNUM_LEN+1];
serialnum[SERIALNUM_LEN] = '\0';
char *serialnum_ptr = (char*) (FLASH_OFFSET + LAST_4K_BLOCK);
switch (factory_command_id) {
case f_bootloader:
print("bootloader_jump\n");
@ -47,6 +56,13 @@ void handle_factory_command(uint8_t *data) {
case f_adc:
factory_trigger_adc();
break;
case f_serialnum:
print("Reading Device serial number\n");
memcpy(serialnum, serialnum_ptr, SERIALNUM_LEN);
uprintf("Serial number: %s\n", serialnum);
break;
default:
uprintf("Unknown factory command: %u\n", factory_command_id);
break;