【iCore1S 雙核心板_ARM】例程十八：SD_IAP_FPGA實驗——更新升級FPGA

實驗現象及操做說明：

一、燒寫程序成功，綠色ARM·LED燈點亮，三色FPGA·LED燈循環點亮，燒寫失敗，若是掛載SD卡失敗，紅燈快閃，若是打開文件失敗，藍燈快閃，讀取文件指針移動失敗，白燈點亮，升級失敗，紅燈慢閃。

二、上電時按着ARM·KEY，進入虛擬U盤模式，計算機將出現一個磁盤，可將升級文件拷入SD卡。

核心代碼：

int main(void)
{

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

 
  /* 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();
  MX_SDIO_SD_Init();
//  MX_USB_DEVICE_Init();
  MX_FATFS_Init();

  /* USER CODE BEGIN 2 */
    if(!KEY_INPUT){
        MX_USB_DEVICE_Init();
        while(1){
            LED_RED_ON;
            HAL_Delay(300);
            LED_RED_OFF;
            HAL_Delay(300);
        }
    }
    

    if(BSP_SD_Init() != USBD_OK){
        while(1){
            LED_RED_ON;
            for(i = 0;i < 3000000;i++);
            LED_RED_OFF;
            for(i = 0;i < 3000000;i++);
        }
    }
    HAL_Delay(500);

    //¹ÒÔØSD¿¨
    res = f_mount(&fatfs,"0:",1);    
    if(res != RES_OK){
        
        //¹ÒÔØʧ°Ü£¬Â̵ƿìÉÁ
        while(1){
            LED_GREEN_ON;
            for(i = 0;i < 3000000;i++);
            LED_GREEN_OFF;
            for(i = 0;i < 3000000;i++);
        }
    }
    res = f_open(&fil,"0:/system/sdram.rbf",FA_READ);      
    if(res != RES_OK){
        
        //´ò¿ªÊ§°Ü£¬À¶µÆ¿ìÉÁ
        while(1){
            LED_BLUE_ON;
            for(i = 0;i < 3000000;i++);
            LED_BLUE_OFF;
            for(i = 0;i < 3000000;i++);
        }
    }
    res = f_lseek(&fil,0);   
    if(res != RES_OK){
        //°×É«
        LED_RED_ON;
        LED_BLUE_ON;
        LED_GREEN_ON;
        while(1){
        }
    }
    
    //¿ªÊ¼Éý¼¶FPGA³ÌÐò
    NCONFIG_OFF;
    DCLK_OFF;
    for(i = 0; i < 5000; i++);
    if(NSTATUS == 1)
    {
        LED_RED_ON;
        return 0;       
    }
    for(i = 0;i < 40;i++);
    NCONFIG_ON;
    for(i = 0; i < 40; i++);

    while(ncounter < fil.fsize)
    {
    res = f_read(&fil,buffer,1024,&counter);                        
        if(res != RES_OK){
           
            while(1){
                LED_RED_ON;
                for(i = 0;i < 10000000;i++);
                LED_RED_OFF;
                for(i = 0;i < 10000000;i++);
            }
        }
        for(k = 0; k < counter; k++)
        {
          for(i = 0; i < 8; i++)
          {
          if(buffer[k]&0x01)DATA0_ON;
                else DATA0_OFF;
                DCLK_ON;
                buffer[k] >>= 1;
              DCLK_OFF;
        }
          ncounter++;
      }
  }    
    if(CONFIG_DONE == 1){
        LED_GREEN_ON;
    }else {
        LED_BLUE_ON;
    }
    
    for(i = 0; i < 40; i++)
    {
     DCLK_ON;
         for(i = 0; i < 800; i++);                                       
         DCLK_OFF;
         for(i = 0; i < 800; i++);                                       
    }

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */

}

實驗方法及指導書:

連接：http://pan.baidu.com/s/1dFjJs5N 密碼：kylw