[stm32cubef7] Flash : no status flag clear after error

[regis-k]

Posted on April 12, 2016 at 12:21

Hi,

I am using STM32F7xx HAL Drivers v1.0.4 (09-December-2015). I found a bug in stm32f7xx_hal_flash.c : when I call HAL_FLASH_Program, and it returns an error (sector write protected for example), following calls to HAL_FLASH_Program return errors before any attempt to write. It is because error flags in FLASH_SR are not cleared after save. Here is a patch that fixes the bug in FLASH_WaitForLastOperation function : diff --git a/HAL_Driver/Src/stm32f7xx_hal_flash.c b/HAL_Driver/Src/stm32f7xx_hal_flash.c index 8ac6351..3de2461 100644 --- a/HAL_Driver/Src/stm32f7xx_hal_flash.c +++ b/HAL_Driver/Src/stm32f7xx_hal_flash.c @@ -646,6 +646,10 @@ HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)    {      /*Save the error code*/      FLASH_SetErrorCode(); + +    /*Clear error flags*/ +    __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPERR  | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_ERSERR ); +      return HAL_ERROR;    }   -- 1.9.5.msysgit.0

[Nesrine M_O]

Posted on April 22, 2016 at 14:59

Hi hanna.regis,

Thank you for bringing this issue to our attention. I will forward it to our development team for checking & come back to you. Sorry for the inconvenience may bring.-Syrine-