1 MCU 片内Flash 读写

REF:

2 下图是Flash写的过程：

3 下图是Flash页擦除过程：

4 下图为Flash全擦除过程

5 code添加

编译环境

1 MDK-5.26

2 STM32CUBEMX 5.6.0

main.c文件加入

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
//int fputc(int ch, FILE *f)
//{
//    HAL_UART_Transmit(&huart1, (uint8_t *)&ch,1, 0xFFFF);
//    return ch;
//}

uint32_t WriteFlashData = 0x12345678;
uint32_t addr = 0x08003000;

/*FLASH写入程序*/
void writeFlashTest(void)
{
	/* 1/4解锁FLASH*/
	HAL_FLASH_Unlock();

	/* 2/4擦除FLASH*/
	/*初始化FLASH_EraseInitTypeDef*/
	/*擦除方式页擦除FLASH_TYPEERASE_PAGES，块擦除FLASH_TYPEERASE_MASSERASE*/
	/*擦除页数*/
	/*擦除地址*/
	FLASH_EraseInitTypeDef FlashSet;
	FlashSet.TypeErase = FLASH_TYPEERASE_PAGES;
	FlashSet.PageAddress = addr;
	FlashSet.NbPages = 1;
	
	/*设置PageError，调用擦除函数*/
	uint32_t PageError = 0;
	HAL_FLASHEx_Erase(&FlashSet, &PageError);

	/* 3/4对FLASH烧写*/
	HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, addr, WriteFlashData);

	/* 4/4锁住FLASH*/
	HAL_FLASH_Lock();
}

/*FLASH读取打印程序*/
void printFlashTest(void)
{
	uint32_t temp = *(__IO uint32_t*)(addr);

	printf("addr is:0x%x, data is:0x%x
", addr, temp);
}
/* USER CODE END 0 */

在main函数中添加如下code来测试读写。

/*Flash TEST*/
  WriteFlashData = 0x12345678;
  writeFlashTest();
  printFlashTest();
  WriteFlashData = 0x87654321;
  writeFlashTest();
  printFlashTest();

6 测试：

//==========================Add Flash===============================================
uint32_t WriteFlashData = 0x12345678;
uint32_t addr = 0x08001000;

/*
*********FLASH写入程序********************
*/
void writeFlashTest(void)
{
	/* 1/4解锁FLASH*/
	HAL_FLASH_Unlock();

	/* 2/4擦除FLASH*/
	/*初始化FLASH_EraseInitTypeDef*/
	/*擦除方式页擦除FLASH_TYPEERASE_PAGES，块擦除FLASH_TYPEERASE_MASSERASE*/
	/*擦除页数*/
	/*擦除地址*/
	FLASH_EraseInitTypeDef FlashSet;
	FlashSet.TypeErase = FLASH_TYPEERASE_PAGES;
	FlashSet.PageAddress = addr;
	FlashSet.NbPages = 1;
	
	/*设置PageError，调用擦除函数*/
	uint32_t PageError = 0;
	HAL_FLASHEx_Erase(&FlashSet, &PageError);

	/* 3/4对FLASH烧写*/
	HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, addr, WriteFlashData);

	/* 4/4锁住FLASH*/
	HAL_FLASH_Lock();
}

/*FLASH读取打印程序*/
void printFlashTest(void)
{
	uint32_t temp = *(__IO uint32_t*)(addr);

	printf("addr is:0x%x, data is:0x%x
", addr, temp);
}

void writeFlashTest_1(uint32_t addr,uint32_t WriteFlashData)
{
	/* 1/4解锁FLASH*/
	HAL_FLASH_Unlock();

	/* 2/4擦除FLASH*/
	/*初始化FLASH_EraseInitTypeDef*/
	/*擦除方式页擦除FLASH_TYPEERASE_PAGES，块擦除FLASH_TYPEERASE_MASSERASE*/
	/*擦除页数*/
	/*擦除地址*/
	FLASH_EraseInitTypeDef FlashSet;
	FlashSet.TypeErase = FLASH_TYPEERASE_PAGES;
	FlashSet.PageAddress = addr;
	FlashSet.NbPages = 1;
	
	/*设置PageError，调用擦除函数*/
	uint32_t PageError = 0;
	HAL_FLASHEx_Erase(&FlashSet, &PageError);

	/* 3/4对FLASH烧写*/
	HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, addr, WriteFlashData);

	/* 4/4锁住FLASH*/
	HAL_FLASH_Lock();
}

/*FLASH读取打印程序*/
void printFlashTest_1(uint32_t addr)
{
	uint32_t temp = *(__IO uint32_t*)(addr);

	printf("addr is:0x%x, data is:0x%X
", addr, temp);
}
//===============================================================