Posted on March 20, 2018 at 12:01Second update:
The problem seems to be occurring within a loop where we do something like this: (simplified a little by replacing some constants and structs)
// EEPROMTableStart refers to an array in a struct, it starts at 0x8080114 uint32_t zeroes = 0;
uint8_t i, j, status;
for (j = 0; j < 68; j++) {
for (i = 0; i < 3; i++) {
status = DATA_EEPROM_ProgramWord((uint32_t) (&EEPROMTableStart[j])+(i*4), zeroes);
if (status != FLASH_COMPLETE) {
return ERROR; // <<< Problem here, status == FLASH_ERROR_WRP with j = 4
}
}
}
The strange part (to me) is that this loop fails, not on the first iteration, but on the fourth, writing to 0x8080144.
But this ONLY happens when I've just erased the EEPROM using the ST-Link :
ST-LINK_CLI.exe -c -SE ed1 -Q
When I do this, the program will return an ERROR, on the first boot. All subsequent boots are fine. Call the EEPROM erase command above, error. Reset MCU, no error.
If I have the debugger connected, it doesn't always fail, but if not, it fails systematically on the first boot after an EEPROM erase.
