#include <SoftwareSerial.h>

//https://www.youtube.com/watch?v=PoOxFS2DNpI&t=142s
//For ATtiny84 pin numbers corresponding to ArduinoUNO: https://fabacademy.org/2018/docs/FabAcademy-Tutorials/week8_embedded_programming/attiny_arduino.html
#include <SoftwareSerial.h>

int station1;
int station2;
int station3;
int Direction;

void setup() {
  Serial.begin(9600);
  pinMode(5, OUTPUT);//ATtiny84 pin 
  pinMode(6, OUTPUT);//ATtiny84 pin 
  
  Direction=1; // Forward
}

void loop()
{
  station1 = analogRead(A1);//11
  station2 = analogRead(A2);//12
  station3 = analogRead(A3);//13
  Serial.println(Direction);
 //Serial.println(Speed);
//delay(200)

  if (station1<500) //station1 = Sensor1, analogRead (A0)/ATtiny84 -13
                    //<500 means mid value of high and low
    {                 
    digitalWrite(5, LOW);//Train at stn1,stopped, will start after 5s.
    digitalWrite(6, LOW);
    Serial.println("Station1");
    delay(5000);
    digitalWrite(5, HIGH);//Train starts for direction == 0
    Direction=1;
     }//if station1 end
if (station2<500)//station2 = analogRead (A1)/ATtiny84 -12
    { 
    digitalWrite(5, LOW);
    digitalWrite(6, LOW);
    Serial.println("Station2");
    delay(5000);
       if (Direction =1) 
       {
      digitalWrite( 5,HIGH);
       }
       else 
       {
      digitalWrite( 6,HIGH);
       }
    }//if station2 end
  if (station3<500)//station3 = analogRead (A3)/ATtiny84 -11
    {
    digitalWrite(5, LOW);
    digitalWrite(6, LOW);
    Serial.println("Station3");
    delay(5000);
    digitalWrite( 6,HIGH);
    Direction=0;
    }//if station3 end
 
 delay(1500);
  


}//void loop ends