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STM32CubeF4/Projects/STM32F4-Discovery/Examples/FLASH/FLASH_EraseProgram/Src/main.c
Eya d599a824df Release v1.26.0
2021-03-03 14:55:52 +01:00

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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
* STM32F4xx FLASH.
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2017 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 STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup FLASH_EraseProgram
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define FLASH_USER_START_ADDR ADDR_FLASH_SECTOR_2 /* Start @ of user Flash area */
#define FLASH_USER_END_ADDR ADDR_FLASH_SECTOR_11 + GetSectorSize(ADDR_FLASH_SECTOR_11) -1 /* End @ of user Flash area : sector start address + sector size -1 */
#define DATA_32 ((uint32_t)0x12345678)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint32_t FirstSector = 0, NbOfSectors = 0, Address = 0;
uint32_t SectorError = 0;
__IO uint32_t data32 = 0 , MemoryProgramStatus = 0;
/*Variable used for Erase procedure*/
static FLASH_EraseInitTypeDef EraseInitStruct;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Error_Handler(void);
static uint32_t GetSector(uint32_t Address);
static uint32_t GetSectorSize(uint32_t Sector);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure LED3, LED4, LED5 and LED6 */
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
BSP_LED_Init(LED5);
BSP_LED_Init(LED6);
/* Configure the system clock to 168 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) ***********/
/* Get the 1st sector to erase */
FirstSector = GetSector(FLASH_USER_START_ADDR);
/* Get the number of sector to erase from 1st sector*/
NbOfSectors = GetSector(FLASH_USER_END_ADDR) - FirstSector + 1;
/* Fill EraseInit structure*/
EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
EraseInitStruct.Sector = FirstSector;
EraseInitStruct.NbSectors = NbOfSectors;
if(HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK)
{
/*
Error occurred while sector erase.
User can add here some code to deal with this error.
SectorError will contain the faulty sector and then to know the code error on this sector,
user can call function 'HAL_FLASH_GetError()'
*/
/*
FLASH_ErrorTypeDef errorcode = HAL_FLASH_GetError();
*/
Error_Handler();
}
/* Note: If an erase operation in Flash memory also concerns data in the data or instruction cache,
you have to make sure that these data are rewritten before they are accessed during code
execution. If this cannot be done safely, it is recommended to flush the caches by setting the
DCRST and ICRST bits in the FLASH_CR register. */
__HAL_FLASH_DATA_CACHE_DISABLE();
__HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
__HAL_FLASH_DATA_CACHE_RESET();
__HAL_FLASH_INSTRUCTION_CACHE_RESET();
__HAL_FLASH_INSTRUCTION_CACHE_ENABLE();
__HAL_FLASH_DATA_CACHE_ENABLE();
/* 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 */
/*
FLASH_ErrorTypeDef errorcode = HAL_FLASH_GetError();
*/
Error_Handler();
}
}
/* 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 LED4 */
BSP_LED_On(LED4);
}
else
{
/* Error detected. Switch on LED5 */
Error_Handler();
}
/* Infinite loop */
while (1)
{
}
}
/**
* @brief Gets the sector of a given address
* @param None
* @retval The sector of a given address
*/
static uint32_t GetSector(uint32_t Address)
{
uint32_t sector = 0;
if((Address < ADDR_FLASH_SECTOR_1) && (Address >= ADDR_FLASH_SECTOR_0))
{
sector = FLASH_SECTOR_0;
}
else if((Address < ADDR_FLASH_SECTOR_2) && (Address >= ADDR_FLASH_SECTOR_1))
{
sector = FLASH_SECTOR_1;
}
else if((Address < ADDR_FLASH_SECTOR_3) && (Address >= ADDR_FLASH_SECTOR_2))
{
sector = FLASH_SECTOR_2;
}
else if((Address < ADDR_FLASH_SECTOR_4) && (Address >= ADDR_FLASH_SECTOR_3))
{
sector = FLASH_SECTOR_3;
}
else if((Address < ADDR_FLASH_SECTOR_5) && (Address >= ADDR_FLASH_SECTOR_4))
{
sector = FLASH_SECTOR_4;
}
else if((Address < ADDR_FLASH_SECTOR_6) && (Address >= ADDR_FLASH_SECTOR_5))
{
sector = FLASH_SECTOR_5;
}
else if((Address < ADDR_FLASH_SECTOR_7) && (Address >= ADDR_FLASH_SECTOR_6))
{
sector = FLASH_SECTOR_6;
}
else if((Address < ADDR_FLASH_SECTOR_8) && (Address >= ADDR_FLASH_SECTOR_7))
{
sector = FLASH_SECTOR_7;
}
else if((Address < ADDR_FLASH_SECTOR_9) && (Address >= ADDR_FLASH_SECTOR_8))
{
sector = FLASH_SECTOR_8;
}
else if((Address < ADDR_FLASH_SECTOR_10) && (Address >= ADDR_FLASH_SECTOR_9))
{
sector = FLASH_SECTOR_9;
}
else if((Address < ADDR_FLASH_SECTOR_11) && (Address >= ADDR_FLASH_SECTOR_10))
{
sector = FLASH_SECTOR_10;
}
else /* (Address < FLASH_END_ADDR) && (Address >= ADDR_FLASH_SECTOR_11) */
{
sector = FLASH_SECTOR_11;
}
return sector;
}
/**
* @brief Gets sector Size
* @param None
* @retval The size of a given sector
*/
static uint32_t GetSectorSize(uint32_t Sector)
{
uint32_t sectorsize = 0x00;
if((Sector == FLASH_SECTOR_0) || (Sector == FLASH_SECTOR_1) || (Sector == FLASH_SECTOR_2) || (Sector == FLASH_SECTOR_3))
{
sectorsize = 16 * 1024;
}
else if(Sector == FLASH_SECTOR_4)
{
sectorsize = 64 * 1024;
}
else
{
sectorsize = 128 * 1024;
}
return sectorsize;
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* Turn LED5 on */
BSP_LED_On(LED5);
while(1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 168000000
* HCLK(Hz) = 168000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 336
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
/* STM32F405x/407x/415x/417x Revision Z devices: prefetch is supported */
if (HAL_GetREVID() == 0x1001)
{
/* Enable the Flash prefetch */
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
}
}
#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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