STM32F103系列内部Flash读写程序

/****************************************************************
*Function: STM32F103系列内部Flash读写操作
*Author: ValerianFan
*Date: 2014/04/09
*E-Mail: fanwenjingnihao@https://www.wendangku.net/doc/981847752.html,
*Other: 该程序不能直接编译运行，只包含了Flash读写操作
****************************************************************/


#include "stm32f10x.h"
#include "stm32f10x_flash.h" //flash操作接口文件（在库文件中），必须要包含


#define STARTADDR 0x08010000 //STM32F103RB 其他型号基本适用，未测试
volatile FLASH_Status FLASHStatus = FLASH_COMPLETE; //Flash操作状态变量


/****************************************************************
*Name: ReadFlashNBtye
*Function: 从内部Flash读取N字节数据
*Input: ReadAddress：数据地址（偏移地址）ReadBuf：数据指针 ReadNum：读取字节数
*Output: 读取的字节数
*Author: ValerianFan
*Date: 2014/04/09
*E-Mail: fanwenjingnihao@https://www.wendangku.net/doc/981847752.html,
*Other:
****************************************************************/
int ReadFlashNBtye(uint32_t ReadAddress, uint8_t *ReadBuf, int32_t ReadNum)
{
int DataNum = 0;
ReadAddress = (uint32_t)STARTADDR + ReadAddress;
while(DataNum < ReadNum)
{
*(ReadBuf + DataNum) = *(__IO uint8_t*) ReadAddress++;
DataNum++;
}
return DataNum;
}

/****************************************************************
*Name: WriteFlashOneWord
*Function: 向内部Flash写入32位数据
*Input: WriteAddress：数据地址（偏移地址）WriteData：写入数据
*Output: NULL
*Author: ValerianFan
*Date: 2014/04/09
*E-Mail: fanwenjingnihao@https://www.wendangku.net/doc/981847752.html,
*Other:
****************************************************************/

void WriteFlashOneWord(uint32_t WriteAddress,uint32_t WriteData)
{
FLASH_UnlockBank1();
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
FLASHStatus = FLASH_ErasePage(STARTADDR);

if(FLASHStatus == FLASH_COMPLETE)
{
FLASHStatus = FLASH_ProgramWord(STARTADDR + WriteAddress, WriteData); //flash.c 中API函数
//FLASHStatus = FLASH_ProgramWord(StartAddress+4, 0x56780000); //需要写入更多数据时开启
//FLASHStatus = FLASH_ProgramWord(StartAddress+8, 0x87650000); //需要写入更多数据时开启
}
FLASH_LockBank1();
}


/****************************************************************
*Name: USART1_Send_One
*Function: USART1发送一个字节数据
*Input: Data:待发送数据
*Output: NULL
*Author: ValerianFan
*Date: 2014/04/09
*E-Mail: fanwenjingnihao@https://www.wendangku.net/doc/981847752.html,
*Other:
****************************************************************/

void USART1_Send_One(u8 Data)
{
USART_SendData(USART1, Data);
while(USART_GetFlagStatus(USART1, USART_FLAG_TC)==RESET);

}

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

**************************************
*Name: main
*Function: 写入读取内部flash
*Input: NULL
*Output: NULL
*Author: ValerianFan
*Date: 2014/04/09
*E-Mail: fanwenjingnihao@https://www.wendangku.net/doc/981847752.html,
*Other:
****************************************************************/


void main(void)
{
uint8_t Temp_Data[20] = {0};
unsigned char Temp = 0;
int ReadNum = 0;
int i = 0;

Dveice_Init(72); //系统初始化，设置时钟为72M
MCU_USART_Init();

WriteFlashOneWord(0,0x12345678); //写入数据
Delay_Ms(10);
ReadNum = ReadFlashNBtye(0, Temp_Data,4); //读取数据
Temp = (unsigned char)ReadNum;
USART1_Send_One(Temp); //发送读取的字节数
Delay_Ms(10);

while(1)
{
for(i = 0;i < ReadNum;i++)
{
USART1_Send_One(Temp_Data[i]); //发送读取到的数据，可观测数据的存储格式
Delay_Ms(100);
}
}

}