HAL_FLASHEx_Erase无法擦除

### STM32 HAL FLASH Ex Erase Function Not Working Solution When encountering issues with the `HAL_FLASHEx_Erase` function, several factors could contribute to its failure. Ensuring that all necessary conditions are met is crucial for successful operation. The `-O3` compiler optimization level disables all debug and assert options[^1]. This setting can lead to unexpected behavior during development because assertions which might catch errors at runtime will be omitted from the compiled code. However, this does not directly affect flash operations unless there's an issue within conditional compilation sections of your project related to these settings. To resolve problems associated with `HAL_FLASHEx_Erase`, consider verifying: - **Flash Unlock**: Before performing any write or erase actions on Flash memory, unlocking it through `HAL_FLASH_Unlock()` must occur. - **Erase Parameters Configuration**: Ensure correct configuration parameters such as page addresses when calling `HAL_FLASHEx_Erase()`. Incorrect address ranges may result in failed erasure attempts without triggering error messages due to invalid input validation checks being bypassed by optimizations like those enabled via `-O3`. - **Error Handling After Call**: Always check the status returned after invoking `HAL_FLASHEx_Erase()`. If an error occurs (e.g., timeout), appropriate handling should follow based upon application requirements. Below demonstrates how one might properly call `HAL_FLASHEx_Erase` while adhering to best practices mentioned above: ```c // Define sector number you wish to erase here uint32_t PageError = 0; FLASH_EraseInitTypeDef pEraseInitStruct; pEraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES; // Specify type of erase action pEraseInitStruct.PageAddress = ADDR_FLASH_PAGE_128; // Start address where pages begin pEraseInitStruct.NbPages = 1; // Number of consecutive pages to erase starting from given address if(HAL_OK != HAL_FLASHEx_Erase(&pEraseInitStruct, &PageError)){ /* Handle Error */ } else{ /* Proceed Normally */ } /* Lock the Flash again once done */ HAL_FLASH_Lock(); ```