STM32F072C8T6 flash写入数据暂停异常是哪里的问题？

硬件：STM32F072C8T6
软件：HAL + FreeRTOS + keil

keil仿真时，程序跑着跑着，突然暂停了（未打断点），
每次都是停在HAL写FLASH数据时的这段代码status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
暂停时，我看了下status值是OK的，不知道怎么老是暂停，点继续执行，数据可以正常写入，不知道正常不？？

以下是HAL库写FLASH的原始代码：

HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
{
HAL_StatusTypeDef status = HAL_ERROR;
uint8_t index = 0U;
uint8_t nbiterations = 0U;
/* Process Locked */
__HAL_LOCK( pFlash);
/* Check the parameters */
assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
{
/* Program halfword (16-bit) at a specified address. */
nbiterations = 1U;
}
else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
{
/* Program word (32-bit = 2*16-bit) at a specified address. */
nbiterations = 2U;
}
else
{
/* Program double word (64-bit = 4*16-bit) at a specified address. */
nbiterations = 4U;
}
for (index = 0U; index < nbiterations; index++)
{
FLASH_Program_HalfWord((Address + (2U*index)), (uint16_t)(Data >> (16U*index)));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
/* If the program operation is completed, disable the PG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
/* In case of error, stop programation procedure */
if (status != HAL_OK)
{
break;
}
}
}
/* Process Unlocked */
__HAL_UNLOCK( pFlash);
return status;
}