[简答题]温湿度记录器书,P137页(代码填空题)

参考答案:#include <SPI.h>
#include <SD.h>
#include <dht11.h>
Dht11 DHT11;
#define DHT11_PIN 2
#define LIGHT_PIN A0
Const int chipSelect = 4;
Void setup() {
Serial.begin(9600);
PinMode(10,OUTPUT);
Serial.println("Initializing SD card");
If(!SD.begin(chipSelect)){
Serial.println("Initialization failed!");
While(1);
}
Serial.println("Initialization done.");
}
Void loop() {
Serial.println("Read data form DHT11");
DHT11.read(DHT11_PIN);
Serial.println("Read data form Light Sersor");
Int light = analogRead(LIGHT_PIN);
Serial.println("Open file and write data");
File dataFile = SD.open("datalog.txt",FILE_WRITE);
If(dataFile){
DataFile.print(DHT11.humidity);
DataFile.print(",");
DataFile.print(DHT11.temperature);
DataFile.print(",");
DataFile.println(light);
DataFile.close();
}
Else{
Serial.println("error opening datalog.txt");
}
Serial.println("Wait for next loop");
Delay(60000);
}
}