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...
一旦内容被写入,关闭文件。 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 The circuit: * SD card atta...
("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());}...
10、uot;Card failed, or not present"); / don't do anything more: return; Serial.println("card initialized."); /与SD卡通信成功,串口输出信息card initialized. if (dataFile) while (dataFile.available() &# 11、160; /检查是否dataFile是否有数据 Serial.write(dataFile.read(); /如果有数据则把数...
Serial.println("card initialized.");//与SD卡通信成功,串口输出信息card initialized. } voidloop() { // 定义数组 String dataString =""; // 读取三个传感器值,写入数组 for(intanalogPin =0; analogPin <3; analogPin++){ intsensor =analogRead(analogPin); ...
if (!SD.begin(chipSelect)) { //如果从CS口与SD卡通信失败，串口输出信息Card failed, or not ...
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()); ...
#include <SD.h> // CS引脚为pin4,这里也沿用官方默认设置 const int chipSelect = 4; //设定CS接口 void setup() { Serial.begin(9600); //设置串口通信波特率为9600 Serial.print("Initializing SD card..."); //串口输出数据Initializing SD card... ...