/*
  inputdevices_lm
  Reads two analogue inputs on A2 and A3 and compares with a set value
  Turns on LED if temperature difference greater than set point.
  Developed as part of an assignment for Fab Academy 2017
  This example code is in the public domain.
*/

// the setup routine runs once when you press reset:
#include<SoftwareSerial.h>
SoftwareSerial mySerial(0,1); // Rx, TX
int temptrip = 52; //ADC count difference correspons to 30C
int tempdiff;
void setup() {
  // initialize serial communication at 9600 bits per second:
  mySerial.begin(9600);
  
  pinMode(8, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  int sensorValue1 = analogRead(A2);
  int sensorValue2 = analogRead(A3);
  tempdiff = sensorValue2 - sensorValue1;
  if(tempdiff > temptrip)
  {
    digitalWrite(8,HIGH);
   }
 else
  {
    digitalWrite(8,LOW);
     }
   
  mySerial.print("ADC count difference is ");
  mySerial.print(tempdiff);
  mySerial.print('\n');
    delay(1000);        // delay in between reads for stability
}