Hello,
I am currently writing a program that will delete the bootloader, which is stored in 24 flash pages (Bootloader begins at 0x08000000, the program itself begins at 0x800C000).
Pages 1-11 & 13-23 can be easily erased. Now the problem is, the page 0 and 12 cannot be erased without error.
Code goes like this (same for page 12):
flash_erase(0,1);
from flash_erase() into -->
HAL_FLASH_Unlock();
HAL_FLASHEx_Erase(&erase_param, &err) //erase_param contains the right page and bank
from HAL_FLASHEx_Erase(&erase_param, &err) into -->
FLASH_PageErase(page_index, pEraseInit->Banks);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); //
That's where the program gets stuck. The page erase still worked, I can see it in the device memory. But there's this error that I can't track down any further.
This is the debug call stack:
Thread #1 [main] 1 [core: 0] (Suspended : Signal : SIGTRAP:Trace/breakpoint trap)
0xfffffffe
<signal handler called>() at 0xfffffff1
0xfffffffe
<signal handler called>() at 0xfffffff9
HAL_FLASHEx_Erase() at stm32l4xx_hal_flash_ex.c:197 0x800fc4a
flash_erase() at flash.c:201 0x8015cb8
app_process() at sulpom_app.c:227 0x8015738
main() at main.c:121 0x800ce84
While debugging, I noticed that if I step into the function
FLASH_PageErase(page_index, pEraseInit->Banks)
the program does not get stuck and the flash pages are erased properly.
Can somebody help me find the cause of this error and help find a solution? Thank you all.
Best regards
EDIT: STM32L452
