#define Moisture A0 //引腳A0
#define DO 7        //引腳D7
float value = .000;

void setup()
{
    // put your setup code here, to run once:
    pinMode(Moisture, INPUT_ANALOG);//定義A0為輸入模式
    pinMode(DO, INPUT);
    Serial.begin(9600);
}
void loop()
{
    // put your main code here, to run repeatedly:
    //串口返回測(cè)量數(shù)據(jù)
    value = (6619.136/analogRead(Moisture))-2.203;
    Serial.print("當(dāng)前含水量");
    Serial.print(value);
    Serial.print("|DO=");
    Serial.println(digitalRead(DO));//讀取DO的數(shù)值
    delay(1000);
}