STM32 Flash读写代码示例

flash读写代码也不用初始化，拿来直接就用。哈哈。。。。。。。。。。







-------------------DataFlash.c----------------------------------



#include "DataFlash.h"




uint16_t Flash_Write_Without_check(uint32_t iAddress, uint8_t *buf, uint16_t iNumByteToWrite) {
    uint16_t i;
    volatile FLASH_Status FLASHStatus = FLASH_COMPLETE;
    i = 0;
    
//    FLASH_UnlockBank1();
    while((i < iNumByteToWrite) && (FLASHStatus == FLASH_COMPLETE))
    {
      FLASHStatus = FLASH_ProgramHalfWord(iAddress, *(uint16_t*)buf);
      i = i+2;
      iAddress = iAddress + 2;
      buf = buf + 2;
    }

    
    return iNumByteToWrite;
}
/**
  * @brief  Programs a half word at a specified Option Byte Data address.
  * @note   This function can be used for all STM32F10x devices.
  * @param  Address: specifies the address to be programmed.
  * @param  buf: specifies the data to be programmed.
  * @param  iNbrToWrite: the number to write into flash
  * @retval if success return the number to write, -1 if error
  *  
  */
int Flash_Write(uint32_t iAddress, uint8_t *buf, uint32_t iNbrToWrite) {
                /* Unlock the Flash Bank1 Program Erase controller */
        uint32_t secpos;
        uint32_t iNumByteToWrite = iNbrToWrite;
uint16_t secoff;
uint16_t secremain;  
  uint16_t i = 0;    
        uint8_t tmp[FLASH_PAGE_SIZE];
        
        FLASH_UnlockBank1();
secpos=iAddress & (~(FLASH_PAGE_SIZE -1 )) ;//扇区地址 
secoff=iAddress & (FLASH_PAGE_SIZE -1);     //在扇区内的偏移
secremain=FLASH_PAGE_SIZE-secoff;           //扇区剩余空间大小 
        volatile FLASH_Status FLASHStatus = FLASH_COMPLETE;
        
        if(iNumByteToWrite<=secremain) secremain = iNumByteToWrite;//不大于4096个字节
        
        while( 1 ) {