(STM32) Internal Flash Access

  1   #define      ADDR_FLASH_PAGE_255     ((uint32_t)0x0807F800)
  2   #define      BufferSize         6
  3   #define       TEST_ERROR                -1
  4   #define       TEST_SUCCESS      0
  5   #define       TEST_FAILED          1
  6  
  7  uint16_t     usFlashWriteBuf[BufferSize] = { 0x0201 , 0x0403 , 0x0605 , 0x0807 , 0x0A09 , 0x0C0B  };
   8  uint16_t     usFlashReadBuf[BufferSize] = { 0  };
   9  
 10   static   int  FlashReadWriteTest( void  )
  11   {
  12       uint32_t ucStartAddr;
  13       int  i =  0  ;
  14       FLASH_Unlock(); 
  15      
 16      ucStartAddr =  ADDR_FLASH_PAGE_255;
  17       if  (FLASH_COMPLETE !=  FLASH_ErasePage(ucStartAddr))
  18       {
  19          printf( "  Erase Error!\n  "  );
  20           return   TEST_ERROR;
  21       }
  22       else 
 23       {
  24          ucStartAddr =  ADDR_FLASH_PAGE_255;
  25          printf( "  Eease success flash data = \n  "  );
  26           for  (i =  0 ; i < BufferSize; i++ )
  27           {
  28              usFlashReadBuf[i] = *(uint32_t* )ucStartAddr;
  29              printf( "  ucFlashReadBuf[%d] = 0x%.4x\n  "  , i, usFlashReadBuf[i]);
  30              ucStartAddr +=  2  ;
  31           }
  32       }
  33      
 34      
 35      ucStartAddr =  ADDR_FLASH_PAGE_255;
  36      printf( "  \ninto flash data : \n  "  );
  37       for  (i =  0 ; i < BufferSize; i++ )
  38       {
  39           if  (FLASH_COMPLETE !=  FLASH_ProgramHalfWord(ucStartAddr, usFlashWriteBuf[i]))
  40           {
  41              printf( "  Write Error!\n  "  );
  42               return   TEST_ERROR;
  43           }
  44          printf( "  ucFlashWriteBuf[%d] = 0x%.4x\n  "  , i, usFlashWriteBuf[i]);
  45          ucStartAddr +=  2  ;
  46       }
  47      
 48      
 49       FLASH_Lock();
  50      
 51      
 52      ucStartAddr =  ADDR_FLASH_PAGE_255;
  53      printf( "  \nRead Flash data : \n  "  );
  54       for  (i =  0 ; i < BufferSize; i++ )
  55       {
  56          usFlashReadBuf[i] = *(__IO uint16_t* )ucStartAddr;
  57          printf( "  ucFlashReadBuf[%d] = 0x%.4x\n  "  , i, usFlashReadBuf[i]);
  58          ucStartAddr +=  2  ;
  59       }
  60      
 61      
 62       for  (i =  0 ; i < BufferSize; i++ )
  63       {
  64           if  (usFlashReadBuf[i] !=  usFlashWriteBuf[i])
  65           {
  66               return   TEST_FAILED;
  67           }
  68       }
  69      
 70       return   TEST_SUCCESS;
  71  }

最後再利用 STM32 ST-LINK Utility 和 UART Comport 去觀察 Memory 的結果。

(STM32) Internal Flash Access

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