#include<Servo.h>
Servo servomotor1;
//833 air
//632 water

//vars
char    IncomingValue = 0;
const int    AirValue = 833; //you need to change this value that you had recorded in the air
const int  WaterValue = 632; //you need to change this value that you had recorded in the water
int         intervals = (AirValue - WaterValue) / 3;
int soilMoistureValue = 0;

unsigned int igUpdateTime;

void setup()
{
         servomotor1.attach(12);
              Serial.begin(9600); // open serial port, set the baud rate to 9600 bps
         igUpdateTime = millis();
}

void loop()
{
         //Excute loop every 10 seconds
	     if((millis() - igUpdateTime) > 10000)
         {
               igUpdateTime = millis();

               if(Serial.available() > 0)
               {
                     IncomingValue = Serial.read();

                     switch (IncomingValue)
                     {

                       case '1':
                                servomotor1.write(0);//watering
                                break;

                       case '0':
                                servomotor1.write(120);//original position
                                break;

                       case 'M':
                                soilMoistureValue = analogRead(A0);
                                Serial.print(soilMoistureValue);
                                Serial.println();
                                break;
                     }
               }
         }
}