stm32 Flash读写[库函数]

标签：flash   stm32   数据管理   sizeof   

#ifndef __BSP_FLASH_H
#define	__BSP_FLASH_H
#include "stm32f10x.h"

typedef enum {
	FLASH_WRITE_OK = 1,
	FLASH_WRIKE_NO = 0,
	FLASH_READ_OK = 1,
	FLASH_READ_NO = 0
}FLASH_FLAG ;

extern unsigned char FLASH_WRITE(unsigned short int * memory_data);
extern unsigned char FLASH_READ(unsigned short int * memory_data,unsigned short int n);


#endif /* __LED_H */

#include "bsp_flash.h"   

FLASH_FLAG FLASH_STATUS;
static u32 count = 0;
/**---------------------------------------------------------------------------------
  * @brief   FLASH写入必不可少步骤
  * @param  输入数据起始地址
  * @retval 函数有无执行完毕
  --------------------------------------------------------------------------------*/

unsigned char FLASH_WRITE(unsigned short int * memory_data)
{	
	static int t;
	count = 0;
	/*Enables or disables the Internal High Speed oscillator (HSI).*/
	RCC_HSICmd(ENABLE);	
	/*打开FLASH可擦除控制器*/
	FLASH_Unlock();
	/*将flash三个标志位全清*/
	FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_PGERR|FLASH_FLAG_WRPRTERR);
	FLASH_ErasePage(0x8002000);
	t = sizeof((const char *)memory_data);
	while(count <= t)
	{
		/*flash 为一个字节存储，16位数据必须地址加2*/
		FLASH_ProgramHalfWord((0x8002000 +count*2),*(memory_data+count)); 
		count++;
		if(count > t)
		{
			FLASH_STATUS = FLASH_WRIKE_NO;
			return FLASH_STATUS;
		}
	}
	/* Locks the FLASH Program Erase Controller.*/
	FLASH_Lock(); 
	RCC_HSICmd(DISABLE);
	FLASH_STATUS = FLASH_WRITE_OK;
	return FLASH_STATUS;
}

/**---------------------------------------------------------------------------------
  * @brief   FLASH读出函数
  * @param  memory_data：输出存放地址，n 输出个数
  * @retval 函数有无执行完毕
  --------------------------------------------------------------------------------*/
unsigned char FLASH_READ(unsigned short int * memory_data,unsigned short int n)
{	
	count = 0;
	while(count < n)
	{
	  *(memory_data+count) = *(u16 *)(0x8002000 + count*2);
		printf("\r %d \r",*(memory_data+count));   //读取
		count++;
		if(count > n)
		{
			FLASH_STATUS = FLASH_READ_NO;	
			return FLASH_STATUS;
		}
	}
	//FLASH_ErasePage(0x8002000);
	FLASH_STATUS = FLASH_READ_OK;
	return FLASH_STATUS;
}

/*********************************************END OF FILE**********************/

stm32 Flash读写[库函数]

标签：flash   stm32   数据管理   sizeof   

原文地址：http://blog.csdn.net/cpj_phone/article/details/41896373