实验现象：
核心代码：
int main(void){ /* USER CODE BEGIN 1 */ int i; int j; FIL file; FATFS fatfs; //Âß¼Çý¶¯Æ÷µÄ¹¤×÷Çø static FRESULT res; //FRESULTº¯Êý¹«¹²½á¹û´úÂë unsigned char write_buffer[512]; //дÎļþ»º³åÇø unsigned char read_buffer[512]; //¶ÁÎļþ»º³åÇø unsigned int counter; /* USER CODE END 1 */ /* MCU Configuration----------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* Configure the system clock */ SystemClock_Config(); /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_DMA_Init(); MX_SDIO_SD_Init(); MX_FATFS_Init(); MX_USART1_UART_Init(); SystemClock_Config(); /* USER CODE BEGIN 2 */ usart1.printf("\x0c"); //ÇåÆÁ usart1.printf("\033[1;32;40m"); //½«×ÖÌåÉèÖóÉÂÌÉ« usart1.printf("\r\n\r\nhello! I am iCore1S!\r\n\r\n\r\n"); HAL_Delay(100); res = f_mount(&fatfs,(TCHAR const*)SDPath,1); //¹ÒÔØSD¿¨ if(res != RES_OK){ usart1.printf("f_mount error!\r\n"); while(1){ HAL_Delay(500); LED_RED_TOGGLE; } } else{ usart1.printf("f_mount successful!\r\n"); } res = f_open(&file,"0:/test.txt",FA_READ | FA_WRITE | FA_OPEN_ALWAYS); //´ò¿ªÇý¶¯Æ÷0ÉϵÄÔ´Îļþ if(res != RES_OK){ usart1.printf("f_open error!\r\n"); while(1){ HAL_Delay(500); LED_RED_TOGGLE; } }else{ usart1.printf("f_open successful!\r\n"); } res = f_lseek(&file,0); //Òƶ¯Ð´Ö¸Õëµ½ÎļþÊ× if(res != RES_OK){ usart1.printf("f_lseek error!\r\n"); while(1){ HAL_Delay(500); LED_RED_TOGGLE; } }else{ usart1.printf("f_lseek successful!\r\n"); } for(i = 0;i < 512;i++){ write_buffer[i] = i % 256; } res = f_write(&file,write_buffer,sizeof(write_buffer),&counter); //½«»º³åÆ÷ÖеÄÄÚÈÝдÈëÔ´Îļþ if(res != RES_OK || counter != 512){ usart1.printf("f_write error!\r\n"); while(1){ HAL_Delay(500); LED_RED_TOGGLE; } }else{ usart1.printf("f_write successful!\r\n"); } res = f_lseek(&file,0); //Òƶ¯¶ÁÖ¸Õëµ½ÎļþÊ× if(res != RES_OK){ usart1.printf("f_lseek error!\r\n"); while(1){ HAL_Delay(500); LED_RED_TOGGLE; } }else{ usart1.printf("f_lseek successful!\r\n"); } res = f_read(&file,read_buffer,sizeof(read_buffer),&counter); if(res != RES_OK || counter != 512){ usart1.printf("f_read error!\r\n"); while(1){ HAL_Delay(500); LED_RED_TOGGLE; } }else{ usart1.printf("f_read successful!\r\n"); } f_close(&file); //¹Ø±ÕÔ´Îļþ usart1.printf("read data:\r\n"); for(i = 0;i < 32;i++){ for(j = 0; j < 16; j ++) usart1.printf(" %02X",read_buffer[i*16+j]); usart1.printf("\r\n"); } /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ HAL_Delay(500); LED_GREEN_TOGGLE; } /* USER CODE END 3 */} 源代码下载链接：
链接： 密码：k4e9