mirror of
https://github.com/STMicroelectronics/STM32CubeF0.git
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253 lines
7.8 KiB
C
253 lines
7.8 KiB
C
/**
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******************************************************************************
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* @file FLASH/FLASH_EraseProgram/Src/main.c
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* @author MCD Application Team
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* @brief This example provides a description of how to erase and program the
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* STM32F0xx FLASH.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/** @addtogroup STM32F0xx_HAL_Examples
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* @{
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*/
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/** @addtogroup FLASH_EraseProgram
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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#define FLASH_USER_START_ADDR ADDR_FLASH_PAGE_16 /* Start @ of user Flash area */
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#define FLASH_USER_END_ADDR ADDR_FLASH_PAGE_31 + FLASH_PAGE_SIZE /* End @ of user Flash area */
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#define DATA_32 ((uint32_t)0x12345678)
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#define DATA_64 ((uint64_t)0x1234567812345678)
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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uint32_t Address = 0, PAGEError = 0;
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__IO uint32_t data32 = 0 , MemoryProgramStatus = 0;
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/*Variable used for Erase procedure*/
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static FLASH_EraseInitTypeDef EraseInitStruct;
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* STM32F0xx HAL library initialization:
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- Configure the Flash prefetch
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- Systick timer is configured by default as source of time base, but user
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can eventually implement his proper time base source (a general purpose
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timer for example or other time source), keeping in mind that Time base
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duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
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handled in milliseconds basis.
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- Low Level Initialization
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*/
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HAL_Init();
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/* Configure the system clock to 48 MHz */
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SystemClock_Config();
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/* Initialize LED3 */
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BSP_LED_Init(LED3);
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/* Unlock the Flash to enable the flash control register access *************/
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HAL_FLASH_Unlock();
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/* Erase the user Flash area
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(area defined by FLASH_USER_START_ADDR and FLASH_USER_END_ADDR) ***********/
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/* Fill EraseInit structure*/
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
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EraseInitStruct.PageAddress = FLASH_USER_START_ADDR;
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EraseInitStruct.NbPages = (FLASH_USER_END_ADDR - FLASH_USER_START_ADDR) / FLASH_PAGE_SIZE;
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/* Note: If an erase operation in Flash memory also concerns data in the data or instruction cache,
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you have to make sure that these data are rewritten before they are accessed during code
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execution. If this cannot be done safely, it is recommended to flush the caches by setting the
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DCRST and ICRST bits in the FLASH_CR register. */
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
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{
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/*
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Error occurred while page erase.
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User can add here some code to deal with this error.
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PAGEError will contain the faulty page and then to know the code error on this page,
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user can call function 'HAL_FLASH_GetError()'
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*/
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/* Infinite loop */
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while (1)
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{
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/* Make LED3 blink (100ms on, 2s off) to indicate error in Erase operation */
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BSP_LED_On(LED3);
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HAL_Delay(100);
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BSP_LED_Off(LED3);
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HAL_Delay(2000);
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}
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}
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/* Program the user Flash area word by word
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(area defined by FLASH_USER_START_ADDR and FLASH_USER_END_ADDR) ***********/
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Address = FLASH_USER_START_ADDR;
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while (Address < FLASH_USER_END_ADDR)
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{
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, Address, DATA_32) == HAL_OK)
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{
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Address = Address + 4;
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}
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else
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{
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/* Error occurred while writing data in Flash memory.
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User can add here some code to deal with this error */
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while (1)
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{
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/* Make LED3 blink (100ms on, 2s off) to indicate error in Write operation */
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BSP_LED_On(LED3);
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HAL_Delay(100);
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BSP_LED_Off(LED3);
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HAL_Delay(2000);
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}
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}
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}
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/* Lock the Flash to disable the flash control register access (recommended
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to protect the FLASH memory against possible unwanted operation) *********/
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HAL_FLASH_Lock();
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/* Check if the programmed data is OK
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MemoryProgramStatus = 0: data programmed correctly
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MemoryProgramStatus != 0: number of words not programmed correctly ******/
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Address = FLASH_USER_START_ADDR;
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MemoryProgramStatus = 0x0;
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while (Address < FLASH_USER_END_ADDR)
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{
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data32 = *(__IO uint32_t *)Address;
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if (data32 != DATA_32)
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{
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MemoryProgramStatus++;
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}
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Address = Address + 4;
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}
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/*Check if there is an issue to program data*/
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if (MemoryProgramStatus == 0)
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{
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/* No error detected. Switch on LED3*/
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BSP_LED_On(LED3);
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}
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else
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{
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/* Error detected. LED3 will blink with 1s period */
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while (1)
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{
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BSP_LED_On(LED3);
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HAL_Delay(1000);
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BSP_LED_Off(LED3);
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HAL_Delay(1000);
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}
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}
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/* Infinite loop */
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while (1)
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{
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}
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSI)
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* SYSCLK(Hz) = 48000000
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* HCLK(Hz) = 48000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 1
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* HSI Frequency(Hz) = 8000000
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* PREDIV = 1
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* PLLMUL = 6
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* Flash Latency(WS) = 1
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* @param None
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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/* No HSE Oscillator on Nucleo, Activate PLL with HSI as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_NONE;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
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RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
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RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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