println("SD read and write test"); SD 卡初始化 //定义SD卡对象 SdFat sd; if (!sd.begin(SD_CS, SD_SCK_MHZ(10))) { Serial.println("SD卡初始化失败!"); tft.setTextColor(ST77XX_RED); tft.println("SDcard init failed"); tft.p
将“SDCard1”引脚芯片选择连接到 Arduino 数字引脚 10 将“Start1”引脚连接到“SDCard1”引脚>“Read Text Line1”引脚时钟 将“Start1”引脚连接到“SDCard1”引脚>“Read Text Line2”引脚时钟 将“Start1”引脚连接到“SDCard1”引脚>“Read Text Line3”引脚时钟 将“Start1”引脚连接到“SDCard1”引...
将“SDCard1”引脚芯片选择连接到 Arduino 数字引脚 10 将“Start1”引脚连接到“SDCard1”引脚>“Read Text Line1”引脚时钟 将“Start1”引脚连接到“SDCard1”引脚>“Read Text Line2”引脚时钟 将“Start1”引脚连接到“SDCard1”引脚>“Read Text Line3”引脚时钟 将“Start1”引脚连接到“SDCard1”引...
sdcard_type_t cardType() 返回存储卡类型,0、1、2、3、4,分别如下: CARD_NONE 未连接存储卡; CARD_MMC mmc卡; CARD_SD sd卡,最大2G; CARD_SDHC sdhc卡,最大32G; CARD_UNKNOWN 未知存储卡; uint64_t cardSize() 返回存储卡大小字节数; uint64_t totalBytes() 返回文件系统总字节数; uint64_t us...
SD card read/writeThis example shows how to read and write data to and from an SD card fileThe circuit:* SD card attached to SPI bus as follows:** MOSI - pin 11** MISO - pin 12** CLK - pin 13** CS - pin 4created Nov 2010by David A. Mellismodified 9 Apr 2012by Tom Igoe...
再次,用SD.open()打开该文件。一旦打开,用SD.read()让Arduino读文件的内容,并发送他们到串口。读取所有文件的内容后,用SD.close()关闭文件。 /* SD card read/write This example shows how to read and write data to and from an SD card file ...
("rmdir failed");}}voidreadFile(fs::FS&fs,constchar*path){Serial.printf("Reading file: %sn",path);File file=fs.open(path);if(!file){Serial.println("Failed to open file for reading");return;}Serial.print("Read from file: ");while(file.available()){Serial.write(file.read());}...
Serial.print((char)file.read()); } }//打印存储卡信息Serial.printf("存储卡总大小是: %lluMB \n", SD_MMC.cardSize() / (1024*1024));//"/ (1024 * 1024)"可以换成">> 20"Serial.printf("文件系统总大小是: %lluB \n", SD_MMC.totalBytes()); ...
该模块(MicroSD Card Adapter)是Micro SD卡读写模块,通过文件系统及SPI接口驱动程序,单片机系统即可完成MicroSD卡内的文件进行读写。Arduino用户可直接使用Arduino IDE自带的SD卡程序库即可完成卡的初始化和读写。 模块特点如下 1.支持Micro SD卡、Micro SDHC卡(高速卡) ...
void setup(){Serial.begin(9600); //设置串口通信波特率为9600Serial.print("Initializing SD card....