main.cpp

00001 #include "mbed.h"
00002 #include "stm32f4xx_hal_flash.h"
00003 
00004 #if 1
00005 #define DEBUG_PRINTF        pc.printf
00006 #else
00007 #define DEBUG_PRINTF(...)
00008 #endif
00009 
00010 namespace {
00011     Serial pc(SERIAL_TX, SERIAL_RX);
00012     
00013     //STM32F411.C/E(DM00119316.pdf p.43 Table 4)
00014     const struct {
00015         uint8_t     sector;
00016         uint32_t    addr;
00017     } FLASH_SECTOR[] = {
00018         {
00019             FLASH_SECTOR_0,
00020             (uint32_t)0x08000000      /* Base address of Sector 0,  16 Kbytes  */
00021         },
00022         {
00023             FLASH_SECTOR_1,
00024             (uint32_t)0x08004000      /* Base address of Sector 1,  16 Kbytes  */
00025         },
00026         {
00027             FLASH_SECTOR_2,
00028             (uint32_t)0x08008000      /* Base address of Sector 2,  16 Kbytes  */
00029         },
00030         {
00031             FLASH_SECTOR_3,
00032             (uint32_t)0x0800c000      /* Base address of Sector 3,  16 Kbytes  */
00033         },
00034         {
00035             FLASH_SECTOR_4,
00036             (uint32_t)0x08010000      /* Base address of Sector 4,  64 Kbytes  */
00037         },
00038         {
00039             FLASH_SECTOR_5,
00040             (uint32_t)0x08020000      /* Base address of Sector 5, 128 Kbytes  */
00041         },
00042         {
00043             FLASH_SECTOR_6,
00044             (uint32_t)0x08040000      /* Base address of Sector 6, 128 Kbytes  */
00045         },
00046         {
00047             FLASH_SECTOR_7,
00048             (uint32_t)0x08060000      /* Base address of Sector 7, 128 Kbytes  */
00049         }
00050     };
00051 
00052     /** @brief  内蔵FLASHへのbyte書込み(セクタ消去有り)
00053      *
00054      * @param[in]   addr    書込み先アドレス(ADDR_FLASH_SECTOR_x)
00055      * @param[in]   pData   書き込みデータ
00056      * @param[in]   Len     書き込みデータサイズ
00057      */
00058     void programByte(int sector, const uint8_t *pData, uint8_t Len)
00059     {
00060         HAL_StatusTypeDef ret;
00061     
00062         /* flash control registerへのアクセス許可 */
00063         HAL_FLASH_Unlock();
00064         DEBUG_PRINTF("unlocked.\n");
00065     
00066         /* 消去(電圧 [2.7V to 3.6V]) */
00067         FLASH_Erase_Sector(FLASH_SECTOR[sector].sector, FLASH_VOLTAGE_RANGE_3);
00068         DEBUG_PRINTF("erased.\n");
00069 
00070         /* 書込み(4byte単位) */
00071         uint32_t addr = FLASH_SECTOR[sector].addr;
00072         for (int lp = 0 ; lp < Len; lp++) {
00073             DEBUG_PRINTF("addr:0x%08x  data=%02x\n", addr, *pData);
00074             ret = HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, addr, *pData);
00075             if (ret != HAL_OK) {
00076                 //trouble!!
00077                 DEBUG_PRINTF("fail\n");
00078                 while (true) {}
00079             }
00080             addr++;
00081             pData++;
00082         }
00083     
00084         /* flash control registerへのアクセス禁止 */
00085         HAL_FLASH_Lock();
00086     }
00087     
00088     const uint8_t *getFlash(int sector) { return (const uint8_t *)FLASH_SECTOR[sector].addr; }
00089 }
00090 
00091 
00092 
00093 int main()
00094 {
00095     uint8_t str[] = "Hello.";
00096     
00097     DEBUG_PRINTF("%s\n", str);
00098     
00099     programByte(7, str, sizeof(str));
00100     
00101     DEBUG_PRINTF("success[%s]\n", getFlash(7));
00102 }