1.主存储块：用于保存具体的程序代码和用户数据，主存储块是以页为单位划分的，

　　　　　　一页大小为1KB。范围为从地址0x08000000开始的128KB内。

2.信息块   ：用于负责由stm32出厂是放置2KB的启动程序（Bootloader）和512B的用户配置信息区

对Flash 的写入操作要 “先擦除后写入”的原则；

 stm32的内置flash 编程操作都是以页为单位写入的，而写入的操作必须要以16位半字宽度数据位单位，允许跨页写，写入非16位数据时将导致stm32内部总线错误。

进行内置flash读写时，必须要打开内部Rc振荡器。

#ifndef __BSP_FLASH_H

#define    __BSP_FLASH_H

#include "stm32f10x.h"

typedef enum {

    FLASH_WRITE_OK = ,

    FLASH_WRIKE_NO = ,

    FLASH_READ_OK = ,

    FLASH_READ_NO =

}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 = ;

/**---------------------------------------------------------------------------------

  * @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 = ;

    /*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*),*(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 = ;

    while(count < n)

    {

      *(memory_data+count) = *(u16 *)(0x8002000 + count*);

        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**********************/