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

1 //读取指定地址的半字(16位数据)
2 //faddr:读地址(此地址必须为2的倍数!!)
3 //返回值:对应数据.
4 u16 STMFLASH_ReadHalfWord(u32 faddr)
5 {
6     return *(vu16*)faddr; 
7 }

STMFLASH_ReadHalfWord

1 //读取指定地址的字(32位数据)
2 //faddr:读地址(此地址必须为2的倍数!!)
3 //返回值:对应数据.                              
4 u32 STMFLASH_ReadOneWord(u32 faddr)
5 {
6     return *(vu32*)faddr; 
7 }

STMFLASH_ReadOneWord

 1 //从指定地址开始读出指定长度的数据
 2 //ReadAddr:起始地址
 3 //pBuffer:数据指针
 4 //NumToWrite:半字(16位)数
 5 void STMFLASH_Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead)       
 6 {
 7     u16 i;
 8     for(i=0;i<NumToRead;i++)
 9     {
10         pBuffer[i]=STMFLASH_ReadHalfWord(ReadAddr);//读取2个字节.
11         ReadAddr+=2;//偏移2个字节.    
12     }
13 }

STMFLASH_Read

 1 /从指定地址开始读出指定长度的数据
 2 //ReadAddr:起始地址
 3 //pBuffer:数据指针
 4 //NumToWrite:字(32位)数
 5 void STMFLASH_Read_Word(u32 ReadAddr,u32 *pBuffer,u32 NumToRead)       
 6 {
 7     u32 i;
 8     for(i=0;i<NumToRead;i++)
 9     {
10         pBuffer[i]=STMFLASH_ReadOneWord(ReadAddr);//读取4个字节.
11         ReadAddr+=4;//偏移4个字节.    
12     }
13 }

STMFLASH_Read_Word

 1 //不检查的写入
 2 //WriteAddr:起始地址
 3 //pBuffer:数据指针
 4 //NumToWrite:半字(16位)数   
 5 void STMFLASH_Write_NoCheck(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)   
 6 {                       
 7     u16 i;
 8     FLASH_Unlock();    
 9     for(i=0;i<NumToWrite;i++)
10     {
11         FLASH_ProgramHalfWord(WriteAddr,pBuffer[i]);
12         WriteAddr+=2;//地址增加2.
13     }  
14    FLASH_Lock();//上锁 
15 
16 }

STMFLASH_Write_NoCheck

 1 //不检查的写入
 2 //WriteAddr:起始地址
 3 //pBuffer:数据指针
 4 //NumToWrite:半字(16位)数   
 5 void STMFLASH_Write_NoCheck_OneWord(u32 WriteAddr,u32 *pBuffer,u16 NumToWrite)   
 6 {                       
 7     u16 i;
 8     FLASH_Unlock();    
 9     for(i=0;i<NumToWrite;i++)
10     {
11         FLASH_ProgramWord(WriteAddr,pBuffer[i]);
12         WriteAddr+=4;//地址增加2.
13     }
14     FLASH_Lock();//上锁  
15 }

STMFLASH_Write_NoCheck_OneWord

1    FLASH_Unlock();    
2    FLASH_ErasePage(u32 address);
3    FLASH_Lock();

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