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STM32CubeF1/Projects/STM32F103RB-Nucleo/Examples/FLASH/FLASH_EraseProgram/Src/main.c

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/**
******************************************************************************
* @file FLASH/FLASH_EraseProgram/Src/main.c
* @author MCD Application Team
* @brief This example provides a description of how to erase and program the
* STM32F1xx FLASH.
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F1xx_HAL_Examples
* @{
*/
/** @addtogroup FLASH_EraseProgram
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define FLASH_USER_START_ADDR ADDR_FLASH_PAGE_48 /* Start @ of user Flash area */
#define FLASH_USER_END_ADDR ADDR_FLASH_PAGE_127 + FLASH_PAGE_SIZE /* End @ of user Flash area */
#define DATA_32 ((uint32_t)0x12345678)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint32_t Address = 0, PAGEError = 0;
__IO uint32_t data32 = 0 , MemoryProgramStatus = 0;
/*Variable used for Erase procedure*/
static FLASH_EraseInitTypeDef EraseInitStruct;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F103xB HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Initialize LED2 */
BSP_LED_Init(LED2);
/* Configure the system clock to 64 MHz */
SystemClock_Config();
/* Unlock the Flash to enable the flash control register access *************/
HAL_FLASH_Unlock();
/* Erase the user Flash area
(area defined by FLASH_USER_START_ADDR and FLASH_USER_END_ADDR) ***********/
/* Fill EraseInit structure*/
EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
EraseInitStruct.PageAddress = FLASH_USER_START_ADDR;
EraseInitStruct.NbPages = (FLASH_USER_END_ADDR - FLASH_USER_START_ADDR) / FLASH_PAGE_SIZE;
if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
{
/*
Error occurred while page erase.
User can add here some code to deal with this error.
PAGEError will contain the faulty page and then to know the code error on this page,
user can call function 'HAL_FLASH_GetError()'
*/
/* Infinite loop */
while (1)
{
/* Make LED2 blink (100ms on, 2s off) to indicate error in Erase operation */
BSP_LED_On(LED2);
HAL_Delay(100);
BSP_LED_Off(LED2);
HAL_Delay(2000);
}
}
/* Program the user Flash area word by word
(area defined by FLASH_USER_START_ADDR and FLASH_USER_END_ADDR) ***********/
Address = FLASH_USER_START_ADDR;
while (Address < FLASH_USER_END_ADDR)
{
if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, Address, DATA_32) == HAL_OK)
{
Address = Address + 4;
}
else
{
/* Error occurred while writing data in Flash memory.
User can add here some code to deal with this error */
while (1)
{
/* Make LED2 blink (100ms on, 2s off) to indicate error in Write operation */
BSP_LED_On(LED2);
HAL_Delay(100);
BSP_LED_Off(LED2);
HAL_Delay(2000);
}
}
}
/* Lock the Flash to disable the flash control register access (recommended
to protect the FLASH memory against possible unwanted operation) *********/
HAL_FLASH_Lock();
/* Check if the programmed data is OK
MemoryProgramStatus = 0: data programmed correctly
MemoryProgramStatus != 0: number of words not programmed correctly ******/
Address = FLASH_USER_START_ADDR;
MemoryProgramStatus = 0x0;
while (Address < FLASH_USER_END_ADDR)
{
data32 = *(__IO uint32_t *)Address;
if (data32 != DATA_32)
{
MemoryProgramStatus++;
}
Address = Address + 4;
}
/*Check if there is an issue to program data*/
if (MemoryProgramStatus == 0)
{
/* No error detected. Switch on LED2*/
BSP_LED_On(LED2);
}
else
{
/* Error detected. LED2 will blink with 1s period */
while (1)
{
BSP_LED_On(LED2);
HAL_Delay(1000);
BSP_LED_Off(LED2);
HAL_Delay(1000);
}
}
/* Infinite loop */
while (1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSI)
* SYSCLK(Hz) = 64000000
* HCLK(Hz) = 64000000
* AHB Prescaler = 1
* APB1 Prescaler = 2
* APB2 Prescaler = 1
* PLLMUL = 16
* Flash Latency(WS) = 2
* @param None
* @retval None
*/
void SystemClock_Config(void)
{
RCC_ClkInitTypeDef clkinitstruct = {0};
RCC_OscInitTypeDef oscinitstruct = {0};
/* Configure PLL ------------------------------------------------------*/
/* PLL configuration: PLLCLK = (HSI / 2) * PLLMUL = (8 / 2) * 16 = 64 MHz */
/* PREDIV1 configuration: PREDIV1CLK = PLLCLK / HSEPredivValue = 64 / 1 = 64 MHz */
/* Enable HSI and activate PLL with HSi_DIV2 as source */
oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
oscinitstruct.HSEState = RCC_HSE_OFF;
oscinitstruct.LSEState = RCC_LSE_OFF;
oscinitstruct.HSIState = RCC_HSI_ON;
oscinitstruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
oscinitstruct.PLL.PLLState = RCC_PLL_ON;
oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL16;
if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
}
#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\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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