IAR for STM8, FLASH_EraseBlock stuck in release mode

Forum|Forum|6 years ago
November 5, 2019
2 replies
1130 views

#define RAM_EXECUTION (1) configured with STM8AF52xx

Use FLASH_EraseBlock in debug mode to erase normally.

In release mode (medium or high optimization) use FLASH_EraseBlock to die.

why?

This topic has been closed for replies.

O

Ozone

Explorer

Most probably because you use questionable constructs, or omit data/variable qualifiers.

If you e.g. not using "volatile" for externally referenced variables, the compiler will optimize it out.

L

Llai.930Author

Visitor II

I use STM8S_StdPeriph_Driver\src\stm8s_flash.c

IN_RAM(void FLASH_EraseBlock(uint16_t BlockNum, FLASH_MemType_TypeDef FLASH_MemType))
{
 uint32_t startaddress = 0;
 
#if defined(STM8S105) || defined(STM8S005) || defined(STM8S103) || defined(STM8S003) || \
 defined(STM8S001) || defined(STM8S903) || defined (STM8AF626x) || defined (STM8AF622x)
 uint32_t PointerAttr *pwFlash;
#elif defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined (STM8AF62Ax) || defined (STM8AF52Ax) 
 uint8_t PointerAttr *pwFlash;
#endif
 
 /* Check parameters */
 assert_param(IS_MEMORY_TYPE_OK(FLASH_MemType));
 if(FLASH_MemType == FLASH_MEMTYPE_PROG)
 {
 assert_param(IS_FLASH_PROG_BLOCK_NUMBER_OK(BlockNum));
 startaddress = FLASH_PROG_START_PHYSICAL_ADDRESS;
 }
 else
 {
 assert_param(IS_FLASH_DATA_BLOCK_NUMBER_OK(BlockNum));
 startaddress = FLASH_DATA_START_PHYSICAL_ADDRESS;
 }
 
 /* Point to the first block address */
#if defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined (STM8AF62Ax) || defined (STM8AF52Ax)
 pwFlash = (PointerAttr uint8_t *)(MemoryAddressCast)(startaddress + ((uint32_t)BlockNum * FLASH_BLOCK_SIZE));
#elif defined(STM8S105) || defined(STM8S005) || defined(STM8S103) || defined(STM8S003) || \
 defined(STM8S001) || defined (STM8S903) || defined (STM8AF626x) || defined (STM8AF622x)
 pwFlash = (PointerAttr uint32_t *)(MemoryAddressCast)(startaddress + ((uint32_t)BlockNum * FLASH_BLOCK_SIZE));
#endif	/* STM8S208, STM8S207 */
 
 /* Enable erase block mode */
 FLASH->CR2 |= FLASH_CR2_ERASE;
 FLASH->NCR2 &= (uint8_t)(~FLASH_NCR2_NERASE);
 
#if defined(STM8S105) || defined(STM8S005) || defined(STM8S103) || defined(STM8S003) || \
 defined(STM8S001) || defined(STM8S903) || defined (STM8AF626x) || defined (STM8AF622x)
 *pwFlash = (uint32_t)0;
#elif defined (STM8S208) || defined(STM8S207) || defined(STM8S007) || defined (STM8AF62Ax) || \
 defined (STM8AF52Ax)
 *pwFlash = (uint8_t)0;
 *(pwFlash + 1) = (uint8_t)0;
 *(pwFlash + 2) = (uint8_t)0;
 *(pwFlash + 3) = (uint8_t)0; 
#endif
}