NucleoF411RET6的TFTLCD屏和SD卡驱动 if(f_mount(&my_fs,"0:",1) == FR_OK) { printf("File mount OK!\r\n"); file_result=f_open(&my_file,"MyData.txt",FA_OPEN_EXISTING | FA_READ); if(file_result==0) { printf("File open success!\r\n"); f_rea