Posted on August 01, 2013 at 10:33Hi,
I need to store a byte array in the STM32F205 flash memory. I've followed an approach that was working on a STM32F103 mcu, but now it doesn't work anymore.
The problem is that the first call to the FLASH_ProgramByte works correctly and returns FLASH_COMPLETE, but int the next iteration of the loop it returns FLASH_ERROR_PROGRAM.
My code is the following:
#define FLASH_SECTOR_BASE_ADDRESS 0x080c0000
int WriteArray(const uint8_t * dataBuffer, uint32_t dataSize, uint32_t dataAddressOffset)
{
uint32_t tempAddress;
FLASH_Status result;
/* Compute temporary address */
tempAddress = FLASH_SECTOR_BASE_ADDRESS + dataAddressOffset;
/* Unlock flash memory */
FLASH_Unlock();
/* Clear pending flags (if any) */
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR |
FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
/* Copy data into flash memory */
for (uint32_t i = 0; i < dataSize; i++)
{
/* Program byte */
result = FLASH_ProgramByte(tempAddress, dataBuffer[i]);
if (result != FLASH_COMPLETE)
{
/* Lock flash memory */
FLASH_Lock();
return FALSE;
}
tempAddress++;
}
/* Lock flash memory */
FLASH_Lock();
return TRUE;
}
I've also tried with FLASH_ProgramHalfWord() with an address increment of 2 and with FLASH_ProgramWord() with an address increment of 4, but the problem is the same.
Thank you for your help
Marco
