HAL_ERROR when i try to erase the flash memory

[FVarg.1]

Hello, i'm using STM32G071RB and i need to write on the Flash Memory.

i check if i have wrote on it before. If i did, i try erase the page to re-write. At this point, i just get a HAL_ERROR of the function HAL_FLASHEx_Erase(&EraseInitStruct, &PageError).

i'm doing this:

#define FLASH_USER_START_ADDR  0x08000000

#define USEDPAGES ((uint8_t) 64)

HAL_FLASH_Unlock(); //Unlock memory write permission

FLASH_EraseInitTypeDef EraseInitStruct;

/**Define Erase Struct**/

EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;

EraseInitStruct.Page = FLASH_USER_START_ADDR;

EraseInitStruct.NbPages = USEDPAGES;

if (HAL_FLASHEx_Erase(&EraseInitStruct, &PageError) != HAL_OK){//Erase Pages

printf("Fail Init Erasing\n");

return 0;

}

i did the same funtions with stm32f0 and i had no troubles with it

[TDK]

> #define FLASH_USER_START_ADDR 0x08000000

> EraseInitStruct.Page = FLASH_USER_START_ADDR;

It needs a page number, not an address.

See an example here:

https://github.com/STMicroelectronics/STM32CubeG0/blob/5cb06333a6a43cefbe145f10a5aa98d3cc4cffee/Projects/STM32G071B-DISCO/Examples/FLASH/FLASH_EraseProgram/Src/main.c

Also in the code:

/**
  * @brief  FLASH Erase structure definition
  */
typedef struct
{
  uint32_t TypeErase;   /*!< Mass erase or page erase.
                             This parameter can be a value of @ref FLASH_Type_Erase */
  uint32_t Banks;       /*!< Select bank to erase.
                             This parameter must be a value of @ref FLASH_Banks
                             (FLASH_BANK_BOTH should be used only for mass erase) */
  uint32_t Page;        /*!< Initial Flash page to erase when page erase is enabled
                             This parameter must be a value between 0 and (FLASH_PAGE_NB - 1) */
  uint32_t NbPages;     /*!< Number of pages to be erased.
                             This parameter must be a value between 1 and (FLASH_PAGE_NB - value of initial page)*/
} FLASH_EraseInitTypeDef;

[Ons KOOLI]

Hi @FVarg.1​ ,

Please refer to the FLASH_EraseProgram example under directory STM32Cube_FW_G0_V1.4.0\Projects\NUCLEO-G071RB\Examples\FLASH of the STM32CubeG0.

Best Regards,

Ons.

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