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;
 }

STMFLASH_ReadHalfWord

 //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;
 }

STMFLASH_ReadOneWord

 //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=;i<NumToRead;i++)
     {
         pBuffer[i]=STMFLASH_ReadHalfWord(ReadAddr);//读取2个字节.
         ReadAddr+=;//偏移2个字节.
     }
 }

STMFLASH_Read

 /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=;i<NumToRead;i++)
     {
         pBuffer[i]=STMFLASH_ReadOneWord(ReadAddr);//读取4个字节.
         ReadAddr+=;//偏移4个字节.
     }
 }

STMFLASH_Read_Word

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

 } 

STMFLASH_Write_NoCheck

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

STMFLASH_Write_NoCheck_OneWord

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

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