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发表于 2019-1-11 11:11:15
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昨天程序经过测试发现在同时读写的情况下出现程序死机情况,因此有改进了一些,希望没有误导大家
#include "main.h"
#define QJ_BZ
#include "Global_Variable.h"
#include "stm32f4xx_it.h"
#include "stm32f4xx.h"
#include "stm32f4xx_flash.h"
#include "USART1.H"
#include "USART2.H"
unsigned char Timer_SendData_Flag;
unsigned char Timer_Collect_Flag;
unsigned char IWDG_Time_Conts;
int SCR1_Compensate;
int SCR2_Compensate;
unsigned char Rec_Flag;
unsigned char Rec_Buf[8];
///////////////////////////////////////////////////
unsigned int data[4] ={0x71,0x12,0x23,0x54};
unsigned int data1[4]={0x72,0x22,0x23,0x54};
unsigned int data2[4]={0x73,0x32,0x23,0x54};
unsigned int data3[4]={0x74,0x42,0x23,0x54};
unsigned int data4[4]={0x75,0x52,0x23,0x54};
unsigned int data5[4]={0x76,0x62,0x23,0x54};
unsigned int data6[4]={0x77,0x72,0x23,0x54};
unsigned int data7[4]={0x78,0x82,0x23,0x54};
unsigned int data8[4]={0x79,0x92,0x23,0x54};
////////////////////////////////////////////////////////////////////////////////////////
//////////////
//用户根据自己的需要设置
#define STM32_FLASH_SIZE 512 //所选STM32的FLASH容量大小(单位为K)
#define STM32_FLASH_WREN 1 //使能FLASH写入(0,不是能;1,使能)
////////////////////////////////////////////////////////////////////////////////////////
//////////////
#if STM32_FLASH_SIZE<256
#define STM_SECTOR_SIZE 4096 //字节
#else
#define STM_SECTOR_SIZE 4096
#endif
//FLASH起始地址
#define STM32_FLASH_BASE 0x08000000 //STM32 FLASH的起始地址
//FLASH解锁键值
u32 mUseHalfWord;//
u32 mStartAddress;//
u32 startAddress=(0x08000000+1000);
u32 useHalfWord=1;
//读取指定地址的半字(16位数据)
//faddr:读地址(此地址必须为2的倍数!!)
//返回值:对应数据.
u16 ReadHalfWord(u32 faddr);
//WriteAddr:起始地址
//pBuffer:数据指针
//NumToWrite:半字(16位)数 ??
void Write_NoCheck(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite) ;
//从指定地址开始写入指定长度的数据
//WriteAddr:起始地址(此地址必须为2的倍数!!)
//pBuffer:数据指针
//NumToWrite:半字(16位)数(就是要写入的16位数据的个数.)
void Write(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite);
//从指定地址开始读出指定长度的数据
//ReadAddr:起始地址
//pBuffer:数据指针
//NumToWrite:半字(16位)数
void Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead) ;
u16 STMFLASH_BUF[STM_SECTOR_SIZE/2];//最多是2K字节
void STFLASH(uint32_t startAddress,u32 useHalfWord)
{
if(startAddress%STM_SECTOR_SIZE!=0)//不是页的开始,将开始处设置为下一个页开始的地
方
startAddress+=(STM_SECTOR_SIZE-(startAddress%STM_SECTOR_SIZE));
mStartAddress=startAddress;
mUseHalfWord=useHalfWord;
}
//读取指定地址的半字(16位数据)
//faddr:读地址(此地址必须为2的倍数!!)
//返回值:对应数据.
u16 ReadHalfWord(u32 faddr)
{
return *(vu16*)faddr;
}
//WriteAddr:起始地址
//pBuffer:数据指针
//NumToWrite:半字(16位)数
void Write_NoCheck(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)
{
u16 i;
for(i=0;i<NumToWrite;i++)
{
FLASH_ProgramHalfWord(WriteAddr,pBuffer[i]);
WriteAddr+=2;//地址增加2.
}
}
//从指定地址开始写入指定长度的数据
//WriteAddr:起始地址(此地址必须为2的倍数!!)
//pBuffer:数据指针
//NumToWrite:半字(16位)数(就是要写入的16位数据的个数.)
void Write(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)
{
u32 secpos; //扇区地址
u16 secoff; //扇区内偏移地址(16位字计算)
u16 secremain; //扇区内剩余地址(16位字计算)
u16 i;
u32 offaddr; //去掉0X08000000后的地址
if(WriteAddr<STM32_FLASH_BASE||(WriteAddr>=(STM32_FLASH_BASE
+1024*STM32_FLASH_SIZE)))return;//非法地址
FLASH_Unlock(); //解锁
offaddr=WriteAddr-STM32_FLASH_BASE; //实际偏移地址.
secpos=offaddr/STM_SECTOR_SIZE; //扇区地址 0~127 for
STM32F103RBT6
secoff=(offaddr%STM_SECTOR_SIZE)/2; //在扇区内的偏移(2个字节为基本单
位.)
secremain=STM_SECTOR_SIZE/2-secoff; //扇区剩余空间大小
if(NumToWrite<=secremain)secremain=NumToWrite;//不大于该扇区范围
while(1)
{ /*
Read(secpos*STM_SECTOR_SIZE
+STM32_FLASH_BASE,STMFLASH_BUF,STM_SECTOR_SIZE/2);//读出整个扇区的内容
for(i=0;i<secremain;i++)//校验数据
{
if(STMFLASH_BUF[secoff+i]!=0XFFFF)break;//需要擦除
}
if(i<secremain)//需要擦除
{
FLASH_ErasePage(secpos*STM_SECTOR_SIZE+STM32_FLASH_BASE);//擦除
这个扇区
for(i=0;i<secremain;i++)//复制
{
STMFLASH_BUF[i+secoff]=pBuffer[i];
}
Write_NoCheck(secpos*STM_SECTOR_SIZE
+STM32_FLASH_BASE,STMFLASH_BUF,STM_SECTOR_SIZE/2);//写入整个扇区
}else */Write_NoCheck(WriteAddr,pBuffer,secremain);//写已经擦除了的,直接
写入扇区剩余区间.
if(NumToWrite==secremain)break;//写入结束了
else//写入未结束
{
secpos++; //扇区地址增1
secoff=0; //偏移位置为0
pBuffer+=secremain; //指针偏移
WriteAddr+=secremain; //写地址偏移
NumToWrite-=secremain; //字节(16位)数递减
if(NumToWrite>(STM_SECTOR_SIZE/2))secremain=STM_SECTOR_SIZE/2;//
下一个扇区还是写不完
else secremain=NumToWrite;//下一个扇区可以写完了
}
};
FLASH_Lock();//上锁
}
//从指定地址开始读出指定长度的数据
//ReadAddr:起始地址
//pBuffer:数据指针
//NumToWrite:半字(16位)数
void Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead)
{
u16 i;
for(i=0;i<NumToRead;i++)
{
pBuffer[i]=ReadHalfWord(ReadAddr);//读取2个字节.
ReadAddr+=2;//偏移2个字节.
}
}
const u8 TEXT_Buffer[]={"Flash_test"};
#define SIZE sizeof(TEXT_Buffer) //数组长度
#define FLASH_SAVE_ADDR 0X0800FC00 //设置FLASH 保存地址(必须为偶数,且其值
要大于本代码所占用FLASH的大小+0X08000000)
u8 datatemp[SIZE];
///////////////////////////////////////////////////
int main(void)
{
unsigned char sendconts,senddat[8];
unsigned int tab1[4];
SystemInit();
USART1_Configuration(115200);
NVIC_USART1_Configuration();
//Write(FLASH_SAVE_ADDR,(u16*)TEXT_Buffer,SIZE);//写数据,第一次下载程序到32,
第二次注释掉此行,断电重新编译下载 //keil watch查看datatemp数组的数据正是之前写进去的数
据
Write(FLASH_SAVE_ADDR,(u16*)data,4);
Write(FLASH_SAVE_ADDR+100,(u16*)data1,4);
Write(FLASH_SAVE_ADDR+200,(u16*)data2,4);
Write(FLASH_SAVE_ADDR+300,(u16*)data3,4);
Write(FLASH_SAVE_ADDR+400,(u16*)data4,4);
Write(FLASH_SAVE_ADDR+500,(u16*)data5,4);
Write(FLASH_SAVE_ADDR+600,(u16*)data6,4);
Write(FLASH_SAVE_ADDR+700,(u16*)data7,4);
Write(FLASH_SAVE_ADDR+800,(u16*)data8,4);
while(1)
{
for(i=0;i<9;i++)
{
Read(FLASH_SAVE_ADDR+i*100,(u16*)tab1,4);
senddat[2] = tab1[0];
senddat[3] = tab1[1];
senddat[4] = tab1[2];
senddat[5] = tab1[3];
senddat[6] = senddat[2]+senddat[3]+senddat[4]+senddat[5];
USART_Byte_Send(USART1, senddat[0]);
USART_Byte_Send(USART1, senddat[1]);
USART_Byte_Send(USART1, senddat[2]);
USART_Byte_Send(USART1, senddat[3]);
USART_Byte_Send(USART1, senddat[4]);
USART_Byte_Send(USART1, senddat[5]);
USART_Byte_Send(USART1, senddat[6]);
USART_Byte_Send(USART1, senddat[7]);
delay_ms(5000);
}
}
}
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