(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 }