STM32L0 MCU EEPROM write

[tropinka06]

Posted on July 29, 2014 at 14:44

Hi.

I use Nucleo board with STM32L0x3 MCU. There are special sequence for EEPROM TYPEPROGRAM_BYTE process?

I can write 4 bytes data (TYPEPROGRAM_WORD) but can't write 1 byte data (TYPEPROGRAM_BYTE):

uint32_t

Address = 0;

uint32_t

data32 = 0x12345678;

uint8_t

ubData[10] = {0};

// write 4 bytes example - work

while

(Address < FLASH_USER_END_ADDR)

    {

if

(HAL_DATA_EEPROMEx_Program(TYPEPROGRAM_WORD, Address, data32) == HAL_OK)

        {

            Address = Address + 4;

        }

        else

        {

            Error_Handler();

        }

        i -= 4;

    }

// write

1

byte example –

does not work

while

(i > 0)

    {

if

(HAL_DATA_EEPROMEx_Program(TYPEPROGRAM_BYTE, Address, ubData[i]) == HAL_OK)

        {

            Address = Address + 1;

        }

        else

        {

            Error_Handler();

        }

        i -= 1;

    }

Thanks.

[Montassar BEN ROMDHANE_O]

Posted on September 15, 2014 at 10:55

Hi kosakovski.evgeni,

This API should work BYTES as it works with WORDS. The Address must be between DATA_EEPROM_BASE and DATA_EEPROM_END. Could you please activate the debug mode in order to check the validity of the input parameters by following the two steps below:

1. In stm32l0xx_hal_conf.h, uncomment /* #define USE_FULL_ASSERT 1 */
2. Add in your user code the following function:

   #ifdef USE_FULL_ASSERT

   /**

   * @brief Reports the name of the source file and the source line number

   * where the assert_param error has occurred.

   * @param file: pointer to the source file name

   * @param line: assert_param error line source number

   * @retval None

   */

   void assert_failed(uint8_t *file, uint32_t line)

   {

   /* User can add his own implementation to report the file name and line number,

   ex: printf(''Wrong parameters value: file %s on line %d
   
   '', file, line) */

   /* Infinite loop */

   while (1)

   {

   }

   }

   #endif

Please try to apply the suggested modifications and keep us informed about your finding. Regards.