问从arduino读取数据并添加时间戳

EN

#include <DHT.h>

#define DHTPIN 2   
#define DHTTYPE DHT11  

DHT dht(DHTPIN, DHTTYPE);

void setup(){
    Serial.begin(9600);
    dht.begin();
}
void loop(){
    float hum = dht.readHumidity();
    float temp= dht.readTemperature();

    Serial.print("Humidity: ");
    Serial.print(hum);
    Serial.print(" %, Temp: ");
    Serial.print(temp);
    Serial.println(" Celsius");
    delay(2000);
}