【iCore4 双核心板_ARM】例程十四：FATFS实验——文件操作

实验现象：

核心代码：

int main(void)
{
    int i,j;
    FIL file;
    FATFS fatfs;
    static FRESULT res;
    unsigned char write_buffer[];
    unsigned char read_buffer[];
    unsigned int counter;

    system_clock.initialize();
    led.initialize();
    usart6.initialize();
    usart6.printf("\x0c");
    usart6.printf("\033[1;32;40m");
    usart6.printf("\r\nHello, I am iCore4!\r\n\r\n");
    if(BSP_SD_Init() != ){
        usart6.printf("SD ERROR!\r\n");
        while(){
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
            HAL_Delay();
        }
    }else{
        usart6.printf("SD Initialize successful!\r\n");
    }

    HAL_Delay();
    res = f_mount(&fatfs,"0:",);
    if(res != RES_OK){
        usart6.printf("f_mount error!\r\n");
        while(){
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
            HAL_Delay();
        }
    }else{
        usart6.printf("f_mount successful!\r\n");
    }

    res = f_open(&file,"0:/SD¿¨²âÊÔ.txt",FA_READ | FA_WRITE | FA_OPEN_ALWAYS);//´ò¿ªÇý¶¯Æ÷0ÉϵÄÔ´Îļþ
    if(res != RES_OK){
        usart6.printf("f_open error!\r\n");
        while(){
            HAL_Delay();
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
        }
    }else{
        usart6.printf("f_open successful!\r\n");
    }

    res = f_lseek(&file,);
    if(res != RES_OK){
        usart6.printf("f_lseek error!\r\n");
        while(){
            HAL_Delay();
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
        }
    }else{
        usart6.printf("f_lseek successful!\r\n");
    }

    for(i = ;i < ;i++){
        write_buffer[i] = i % ;
    }    

    res = f_write(&file,write_buffer,,&counter);                       //½«»º³åÆ÷ÖеÄÄÚÈÝдÈëÔ´Îļþ
    if(res != RES_OK || counter != ){
        usart6.printf("f_write error!\r\n");
        while(){
            HAL_Delay();
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
        }
    }else{
        usart6.printf("f_write successful!\r\n");
    }    

    res = f_lseek(&file,);
    if(res != RES_OK){
        usart6.printf("f_lseek error!\r\n");
        while(){
            HAL_Delay();
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
        }
    }else{
        usart6.printf("f_lseek successful!\r\n");
    }

    res = f_read(&file,read_buffer,,&counter);
    if(res != RES_OK || counter != ){
        usart6.printf("f_read error!\r\n");
        while(){
            HAL_Delay();
            LED_RED_ON;
            HAL_Delay();
            LED_RED_OFF;
        }
    }else{
        usart6.printf("f_read successful!\r\n");
    }
    f_close(&file);    

    usart6.printf("read data:\r\n");
    for(i = ;i < ;i++){
        for(j = ; j < ; j ++)
            usart6.printf(" %02X",read_buffer[i*+j]);
        usart6.printf("\r\n");
    }    

    while(){
        LED_GREEN_ON;
        HAL_Delay();
        LED_GREEN_OFF;
        HAL_Delay();
    }
}

源代码下载链接：

链接：https://pan.baidu.com/s/1jJDh134 密码：3pyh

iCore4链接：