15-STM32F103RCT6的FLASH写入

STM32F103RCT6的FLASH写入

1.

//*******************************固件升级地址信息******************************//
#define STM32_FLASH_BASE 	0x08000000	//固件起始地址
#define FLASH_APP_ADDR  	0x08005000 	//APP开始地址
#define FLASH_PARA_ADDR 	0x0803C000	//固件关键信息参数
#define FLASH_INFO_ADDR 	0x0803F000	//固件升级信息参数
#define STM_SECTOR_SIZE		2048				//页大小
#define STM32_FLASH_SIZE 	128					//总页数u16 stm32_flash_buf[STM_SECTOR_SIZE/2]={0x00};					//用于FLASH写操作，注意字节对齐，最多是2K字节
/*FLASH读出函数*****************************************************************************/
u8 STMFLASH_Read_Byte(u32 faddr)
{return *(u8*)faddr; 
}
/*FLASH写入函数*****************************************************************************/
void STMFLASH_Write_NoCheck(u32 WriteAddr,u16 *pBuffer,u16 num_byte)   
{ 			 		 u16 i;for(i=0;i<num_byte;i++){FLASH_ProgramHalfWord(WriteAddr,pBuffer[i]);WriteAddr+=2;//地址增加2.}  
} 
/*FLASH写入函数*****************************************************************************/
void STMFLASH_Write(u32 WriteAddr,u8 *pBuffer,u16 num_byte)//写多少个字节	
{u16 i;u16 sec_num;	   	//一共需要写入多少扇区u16 sec_off; 			//最后一包数据个数 ////if((WriteAddr!=FLASH_INFO_ADDR)&&(WriteAddr!=FLASH_APP_ADDR)&&(WriteAddr!=FLASH_PARA_ADDR))return;//非法地址sec_num=(num_byte/STM_SECTOR_SIZE);sec_off=(num_byte%STM_SECTOR_SIZE);FLASH_Unlock();						//解锁//printf("SSSSS");////if(WriteAddr==FLASH_APP_ADDR)//写APP数据{//擦除固件区域for(i=0;i<116;i++){FLASH_ErasePage((i+10)*STM_SECTOR_SIZE+STM32_FLASH_BASE);//擦除APP空间扇区}//写数据到flashfor(i=0;i<sec_num;i++){memset((u8*)stm32_flash_buf,0xFF,sizeof(stm32_flash_buf));//数据缓存buffMem_Copy((u8*)stm32_flash_buf,&pBuffer[i*STM_SECTOR_SIZE],STM_SECTOR_SIZE);//复制数据STMFLASH_Write_NoCheck((FLASH_APP_ADDR+i*STM_SECTOR_SIZE),stm32_flash_buf,STM_SECTOR_SIZE/2);} 	if(sec_off){memset((u8*)stm32_flash_buf,0xFF,sizeof(stm32_flash_buf));//数据缓存buffMem_Copy((u8*)stm32_flash_buf,&pBuffer[sec_num*STM_SECTOR_SIZE],sec_off);//复制数据STMFLASH_Write_NoCheck((FLASH_APP_ADDR+i*STM_SECTOR_SIZE),stm32_flash_buf,STM_SECTOR_SIZE/2);}}else if(WriteAddr==FLASH_INFO_ADDR)//写固件信息{FLASH_ErasePage(FLASH_INFO_ADDR);//擦除这个扇区，这个是固件信息的空间memset((u8*)stm32_flash_buf,0xFF,sizeof(stm32_flash_buf));Mem_Copy((u8*)stm32_flash_buf,pBuffer,sec_off);STMFLASH_Write_NoCheck(FLASH_INFO_ADDR,stm32_flash_buf,STM_SECTOR_SIZE/2);}else if(WriteAddr==FLASH_PARA_ADDR)//写固件信息{FLASH_ErasePage(FLASH_PARA_ADDR);//擦除这个扇区，这个是固件信息的空间memset((u8*)stm32_flash_buf,0xFF,sizeof(stm32_flash_buf));Mem_Copy((u8*)stm32_flash_buf,pBuffer,sec_off);STMFLASH_Write_NoCheck(FLASH_PARA_ADDR,stm32_flash_buf,STM_SECTOR_SIZE/2);}FLASH_Lock();//上锁
}
/*FLASH读出函数*****************************************************************************/
void STMFLASH_Read(u32 ReadAddr,u8 *pBuffer,u16 num_byte)   	
{u16 i;for(i=0;i<num_byte;i++){pBuffer[i]=STMFLASH_Read_Byte(ReadAddr);//读取2个字节.ReadAddr+=1;//偏移.	}
}
/*内存复制函数******************************************************************************/
void Mem_Copy(u8 * date1,u8 * date2,u16 len)
{u16 i;for(i=0;i<len;i++){date1[i]=date2[i];}
}