STM32：片上Flash 操作

之前IAP时候记录过一些，今天对特定地方写又加深了印象，写与擦除都需要先unclock

//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; 
}

//读取指定地址的字(32位数据)
//faddr:读地址(此地址必须为2的倍数!!)
//返回值:对应数据.                              
u32 STMFLASH_ReadOneWord(u32 faddr)
{
    return *(vu32*)faddr; 
}

//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.    
    }
}

/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:字(32位)数
void STMFLASH_Read_Word(u32 ReadAddr,u32 *pBuffer,u32 NumToRead)       
{
    u32 i;
    for(i=0;i<NumToRead;i++)
    {
        pBuffer[i]=STMFLASH_ReadOneWord(ReadAddr);//读取4个字节.
        ReadAddr+=4;//偏移4个字节.    
    }
}

//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;
    FLASH_Unlock();    
    for(i=0;i<NumToWrite;i++)
    {
        FLASH_ProgramHalfWord(WriteAddr,pBuffer[i]);
        WriteAddr+=2;//地址增加2.
    }  
   FLASH_Lock();//上锁 

} 

//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_OneWord(u32 WriteAddr,u32 *pBuffer,u16 NumToWrite)   
{                       
    u16 i;
    FLASH_Unlock();    
    for(i=0;i<NumToWrite;i++)
    {
        FLASH_ProgramWord(WriteAddr,pBuffer[i]);
        WriteAddr+=4;//地址增加2.
    }
    FLASH_Lock();//上锁  
} 

   FLASH_Unlock();    
   FLASH_ErasePage(u32 address);
   FLASH_Lock();