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.println("Please check the connection and card"); ...
myFile.println("Hello, Arduino SD Card!");myFile.close();Serial.println("数据写入完成。");} ...
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...
("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());}...
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 ...
bool begin(const char * mountpoint="/sdcard", bool mode1bit=false) 挂载存储卡,输入参数分别为挂载点、是否使用一线模式; void end() 取消挂载; 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; ...
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()); ...
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...
在loop()函数内部,调用Read_TempHum()和Write_SDcard()函数来获取温度和湿度值,然后将这些值发送到SD卡。 Read_TempHum()循环用于通过调用dht来读取温度和湿度值。读功能。DHT11传感器以8位数据串行发送温湿度值。二氢睾酮。DHT库中的read函数通过Arduino的软件串行函数读取这些值。