0301_BOOT/Bsp/stmflash.c

#include "stmflash.h"
#include "delay.h"
#include "usart.h"
#include "iap.h"
 
//////////////////////////////////////////////////////////////////////////////////	 
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//ALIENTEK miniSTM32开发板
//STM32 FLASH 驱动代码	   
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//修改日期:2012/9/13
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2009-2019
//All rights reserved									  
//////////////////////////////////////////////////////////////////////////////////



 
 
 
//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 STMFLASH_ReadHalfWord(u32 faddr)
{
	return *(vu16*)faddr; 
}





#if STM32_FLASH_WREN	//如果使能了写   
//不检查的写入
//WriteAddr:起始地址
//pBuffer:数据指针
//NumToWrite:半字(16位)数   
void STMFLASH_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.)
#if STM32_FLASH_SIZE<256
#define STM_SECTOR_SIZE 1024 //字节
#else 
#define STM_SECTOR_SIZE	2048
#endif		 
u16 STMFLASH_BUF[STM_SECTOR_SIZE/2];//最多是2K字节
void STMFLASH_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  0~255 for STM32F103RCT6
	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) 
	{	
		STMFLASH_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];	  
			}
			STMFLASH_Write_NoCheck(secpos*STM_SECTOR_SIZE+STM32_FLASH_BASE,STMFLASH_BUF,STM_SECTOR_SIZE/2);//写入整个扇区  
		}
    else 
      STMFLASH_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
}
#endif

//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 STMFLASH_Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead)   	
{
	u16 i;
	for(i=0;i<NumToRead;i++)
	{
		pBuffer[i]=STMFLASH_ReadHalfWord(ReadAddr);//读取2个字节.
		ReadAddr+=2;//偏移2个字节.	
	}
}

//////////////////////////////////////////////////////////////////////////////////////////////////////
//WriteAddr:起始地址
//WriteData:要写入的数据
void Test_Write(u32 WriteAddr,u16 WriteData)   	
{
	STMFLASH_Write(WriteAddr,&WriteData,1);//写入一个字 
}




//擦除app1
 uint32_t erase_app1(void)
{
  uint32_t addr;
  DEBUG_F("start erase_app1......\r\n");
  for(addr=FLASH_APP1_ADDR;addr<FLASH_APP2_ADDR;addr+=STM_SECTOR_SIZE){
    
    IWDG_Feed();														//喂狗
    FLASH_ErasePage(addr);
  }
  DEBUG_F("end erase_app1......\r\n");
  return addr;
}

//擦除app2
 uint32_t erase_app2(void)
{
  uint32_t addr;
  IWDG_Feed();														//喂狗
  DEBUG_F("start erase_app2......\r\n");
  for(addr=FLASH_APP2_ADDR;addr<FLASH_APP3_ADDR;addr+=STM_SECTOR_SIZE){
    FLASH_ErasePage(addr);
  }
  DEBUG_F("end erase_app2......\r\n");
  return addr;
}

//擦除app3,
 uint32_t erase_app3(void)
{
  uint32_t addr;
  
  DEBUG_F("start erase_app3......\r\n");
  for(addr=FLASH_APP3_ADDR;addr<STM32_FLASH_SIZE*1024+STM32_FLASH_BASE;addr+=STM_SECTOR_SIZE){
    FLASH_ErasePage(addr);
  }
  DEBUG_F("end erase_app3......\r\n");
  return addr;
}



//复制,
 uint32_t cp_app3_app1(void)
{
  uint32_t i;
  uint16_t temp;
  uint32_t size=64/2*1024;  //1个半字=2个字节，整个app的大小为64k字节=32k半字
  
  DEBUG_F("start cp_app3_app1......\r\n");
  for(i=0;i<size;i++){        //
    IWDG_Feed();														//喂狗
    temp = STMFLASH_ReadHalfWord(FLASH_APP3_ADDR+i*2);  
    FLASH_ProgramHalfWord(FLASH_APP1_ADDR+i*2,temp);
  }
  DEBUG_F("end cp_app3_app1......\r\n");
  return size;
}


//复制,
 uint32_t cp_app1_app2(void)
{
  uint32_t i;
  uint16_t temp;
  uint32_t size=64/2*1024;  //1个半字=2个字节，整个app的大小为64k字节=32k半字
  
  DEBUG_F("start cp_app1_app2......\r\n");
  for(i=0;i<size;i++){        //
    IWDG_Feed();														//喂狗
    temp = STMFLASH_ReadHalfWord(FLASH_APP1_ADDR+i*2);  
    FLASH_ProgramHalfWord(FLASH_APP2_ADDR+i*2,temp);
  }
  DEBUG_F("end cp_app1_app2......\r\n");
  return size;
}


//复制,
 uint32_t cp_app2_app1(void)
{
  uint32_t i;
  uint16_t temp;
  uint32_t size=64/2*1024;  //1个半字=2个字节，整个app的大小为64k字节=32k半字
  
  DEBUG_F("start cp_app2_app1......\r\n");
  for(i=0;i<size;i++){        //
    IWDG_Feed();														//喂狗
    temp = STMFLASH_ReadHalfWord(FLASH_APP2_ADDR+i*2);  
    FLASH_ProgramHalfWord(FLASH_APP1_ADDR+i*2,temp);
  }
  DEBUG_F("end cp_app2_app1......\r\n");
  return size;
}



//读取app1,
 uint32_t read_app1(void)
{
  uint32_t i;
  uint16_t temp;
  uint32_t size=64/2*1024;  //1个半字=2个字节，整个app的大小为64k字节=32k半字
  
  DEBUG_F("start read_app1......\r\n");
  for(i=0;i<size;i++){        //
    if(i%128==0)
      IWDG_Feed();	//喂狗
    if((i%32 == 0)&&(i>0))
      printf("\r\n");
    
    temp = STMFLASH_ReadHalfWord(FLASH_APP1_ADDR+i*2);  
    printf("%02X %02X ",(uint8_t)(temp&0xFF),(uint8_t)(temp>>8));
    
  }
  DEBUG_F("\r\nsize=%d\r\n",size*2);
  DEBUG_F("end read_app1......\r\n");
  return size;
}



//读取app1,
 uint32_t read_app2(void)
{
  uint32_t i;
  uint16_t temp;
  uint32_t size=64/2*1024;  //1个半字=2个字节，整个app的大小为64k字节=32k半字
  
  DEBUG_F("start read_app2......\r\n");
  for(i=0;i<size;i++){       //
    if(i%128==0)
      IWDG_Feed();	//喂狗
    if((i%32 == 0)&&(i>0))
      printf("\r\n");
    
    temp = STMFLASH_ReadHalfWord(FLASH_APP2_ADDR+i*2);  
    printf("%02X %02X ",(uint8_t)(temp&0xFF),(uint8_t)(temp>>8));
    
  }
  DEBUG_F("\r\nsize=%d\r\n",size*2);
  DEBUG_F("end read_app2......\r\n");
  return size;
}

//读取app1,
 uint32_t read_app3(void)
{
  uint32_t i;
  uint16_t temp;
  uint32_t size=64/2*1024;  //1个半字=2个字节，整个app的大小为64k字节=32k半字
  
  DEBUG_F("start read_app3......\r\n");
  for(i=0;i<size;i++){      //
    if(i%128==0)
      IWDG_Feed();	//喂狗
    if((i%32 == 0)&&(i>0))
      printf("\r\n");
    
    temp = STMFLASH_ReadHalfWord(FLASH_APP3_ADDR+i*2);  
    printf("%02X %02X ",(uint8_t)(temp&0xFF),(uint8_t)(temp>>8));
    
  }
  DEBUG_F("\r\nsize=%d\r\n",size*2);
  DEBUG_F("end read_app3......\r\n");
  return size;
}