Запись во FLASH, STM32F303VC Опции

[Jenya7]

Делаю так

CODE

void WriteFlash(void* src, void* dst, int len)
{
uint32_t timeout = 0;
uint16_t* srcw = (uint16_t*)src;
volatile uint16_t* dstw = (uint16_t*)dst;

FLASH->CR |= FLASH_CR_PG; /* Programm the flash */

while (len)
{
*dstw = *srcw;
while ((FLASH->SR & FLASH_SR_BSY) != 0)
{
timeout++;
if (timeout > 100000) break;
}
if (*dstw != *srcw )
{
goto EndPrg;
}
dstw++;
srcw++;
len = len - sizeof(uint16_t);
}

EndPrg:
FLASH->CR &= ~FLASH_CR_PG; /* Reset the flag back !!!! */
}

void WriteToFlash(uint32_t flash_page)
{
uint32_t *addr;
uint32_t size;

FLASH_Status status;

//flash unlock
if((FLASH->CR & FLASH_CR_LOCK) != RESET)
{
/* Authorize the FLASH Registers access */
FLASH->KEYR = FLASH_KEY1;
FLASH->KEYR = FLASH_KEY2;
}

status = FLASH_ErasePage(flash_page);

if (status == FLASH_COMPLETE)
{
addr = (uint32_t *)flash_page;
size = sizeof(MOTOR_SYS_PARAMS);
WriteFlash(&motor_sys_params, addr, size);
}

//flash lock
FLASH->CR |= FLASH_CR_LOCK;
}

На строчке while ((FLASH->SR & FLASH_SR_BSY) != 0) вылетает в HardFault_Handler.
Я этот код выдернул из старого проекта, он работал на том же STM32F3.

Сообщение отредактировал IgorKossak - Jan 22 2018, 20:22

Причина редактирования: [codebox] для длинного кода, [code] - для короткого!

[Aleksandr Barano...]

На всякий случай хочу напомнить:

Any attempt to read the Flash memory on STM32F4xx while it is being written or erased,
causes the bus to stall. Read operations are processed correctly once the program
operation has completed. This means that code or data fetches cannot be performed while
a write/erase operation is ongoing.