//WaterPlant_Ed2.ino 01/11/2020 12:26:13

#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;
int     ServoPosition = 1; //1 = original home position, 0 = watering

unsigned int igUpdateTime;

void setup()
{
         servomotor1.attach(12);
         servomotor1.write(120);//set @ home position
              Serial.begin(9600); // open serial port, set the baud rate to 9600 bps
         igUpdateTime = millis();
}

void loop()
{
         //Excute loop every 0.5 minute - if this time interval is changed, the App Timers must be changed too
	     if((millis() - igUpdateTime) > 30000)
         {
               igUpdateTime = millis();

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

                     if(ServoPosition == 0)
                     {
                         servomotor1.write(120);//original position
                         ServoPosition = 1;
                     }

                     switch (IncomingValue)
                     {
                         case '1':
                                  servomotor1.write(0);//watering
                                  ServoPosition = 0;
                                  break;
                         case 'M':
                                  soilMoistureValue = analogRead(A0);
                                  Serial.print(soilMoistureValue);
                                  Serial.println();
                                  break;
                     }
               }
         }
}