Posted on December 22, 2017 at 10:53I'm trying to store some data using HAL library.
HAL_FLASH_Unlock();
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGSERR );
FLASH_Erase_Sector(ADDR_FLASH_SECTOR_10, VOLTAGE_RANGE_3);
uint64_t testVar = 0XFAFAFAFAFAFAFAFA;
HAL_FLASH_Program(TYPEPROGRAM_WORD, ADDR_FLASH_SECTOR_10, testVar);
HAL_FLASH_Lock();
Now
FLASH_Erase_Sector does not erase the sector and that's why I can't program it. Am I missing something?
I tried the same function from STM32F4xx_StdPeriph_Driver library and it works fine. I can see that the two fuctions are different even if they should look the same. Few things I don't understand.
1.In the HAL version of the function FLASH_WaitForLastOperation() is not used.
2.This part is missing
/* if the erase operation is completed, disable the SER Bit */
FLASH->CR &= (~FLASH_CR_SER);
FLASH->CR &= SECTOR_MASK;
3. This comment seems a bad copy and paste from the
STM32F4xx_StdPeriph_Driver version.
/* if the previous operation is completed, proceed to erase the sector */
4. I can't figure out where this come from, could someone point me to a datasheet?
/* Need to add offset of 4 when sector higher than FLASH_SECTOR_11 */
if(Sector > FLASH_SECTOR_11)
{
Sector += 4U;
}
#hal_flash_program-stm32f43 #flash_erase_sector #hal_flash
