【iCore4 双核心板_ARM】例程三十三：SD_IAP_ARM实验——更新升级STM32

实验现象及操作说明：

1、本例程共有两个代码包，APP和IAP，IAP程序功能实现将APP程序升级至STM32中。

2、直接上电或烧写程序将执行升级的APP应用程序。

3、按下按键上电或写程序将进行升级，升级文件.bin文件存入在SD卡中

BIN升级文件产生方法：

1、编译APP工程，产生.hex文件。

2、将.hex文件拖至HEX2BIN.EXE即可产生.bin文件。

核心代码：

int main(void)
{

  /* USER CODE BEGIN 1 */
    int k;
    int cnt;
    unsigned int counter;
    unsigned long int ncounter = 0;
    unsigned char buffer[1024];
    FIL fil;
  static FRESULT res;
    unsigned long int *p;
  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();

  /* USER CODE BEGIN 2 */
    if(ARM_KEY_STATE == KEY_UP){
        goto start;    
    }
    LED_BLUE_ON;
    //SD¿¨³õʼ»¯
    if(BSP_SD_Init() != MSD_OK){
        led_trade();
    }
    //½âËøÄÚ´æ,²Á³ýÉÈÇø
    HAL_FLASH_Unlock();
    for(cnt = FLASH_SECTOR_2;cnt < FLASH_SECTOR_11;cnt ++){
        FLASH_Erase_Sector(cnt,OB_BOR_LEVEL3);    
    }
    LED_BLUE_OFF;
    LED_RED_ON;
    
    //f_mount
    res = f_mount(&fatfs,"0:",1);                                  //¸ø´ÅÅÌ·ÖÅäÅÌ·û
    if(res != RES_OK){
        LED_RED_OFF;
        led_trade();
    }    
    
    //f_open
    res = f_open(&fil,"0:/app.bin",FA_READ);                       //´ò¿ªapp.binÎļþ
    if(res != RES_OK){
        LED_RED_OFF;
        led_trade();
    }
    
    //f_lseek
    res = f_lseek(&fil,0);                                         //½«Ö¸ÕëÒƶ¯µ½µÚÒ»¸öλÖÃ
    if(res != RES_OK){
        LED_RED_OFF;
        led_trade();
    }
    
    //дFlash
    while(ncounter < fil.fsize)
    {
    res = f_read(&fil,buffer,1024,&counter);                     //¶ÁÎļþ
        if(res != RES_OK){
            LED_RED_OFF;
            led_trade();
        }
        p = (unsigned long int *)buffer;
        for(k = 0; k < counter / 4; k++)
        {
            HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD,APPLICATION_ADDRESS + ncounter,*(p + k));
          ncounter += 4;
      }
  }
    HAL_FLASH_Lock();
    
    //ARM¸üÐÂÉý¼¶³É¹¦£¬ÂÌÉ«LEDµÆµãÁÁ
    LED_BLUE_OFF;
    LED_RED_OFF;
    LED_GREEN_ON;    
  /* USER CODE END 2 */
    
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

  }
    start:
    //²âÊÔÓû§´úÂëÊÇ·ñ´ÓAPPLICATION_ADDRESS±»±à³Ì
        if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000){ 
            
            //ÌøתÖÁÓû§³ÌÐò
            JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);
            Jump_To_Application = (pFunction) JumpAddress;
            
            //³õʼ»¯Óû§³ÌÐòµÄ¶ÑÕ»Ö¸Õë
            __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
            
            //ÌøתÖÁÓ¦ÓóÌÐò
            Jump_To_Application();
        }else{                
            led_trade();
        }
    
  /* USER CODE END 3 */

}

源代码下载链接：

链接：http://pan.baidu.com/s/1hr5G4AS 密码：1k74

iCore4链接：