/*
  Code for open-loop motor control using potentiometer input.
 */


//#include <SoftwareSerial.h>

//SoftwareSerial mySerial(0, 2); //RX, TX from point of view of chip.

int out1;    //output pin no.
int out2;   //output pin no.
int on=500; //set the on time in microseconds or ms
int off=500; //set the off time in microseconds or ms
int val=0;  //the input value to set speed.
int dir = 0;
boolean state = true;


void setup() {                
  pinMode(0, OUTPUT);    // PWM pin
  pinMode(1, OUTPUT);    // PWM pin  
  pinMode(2, INPUT);     // on/off pin
  pinMode(2, INPUT_PULLUP);  //enable pullup resistor.
  pinMode(3, INPUT);     // Analog in pin for speed.
  pinMode(4, INPUT);     // direction pin.
  pinMode(4, INPUT_PULLUP);  //enable pullup resistor.
  //mySerial.begin(9600);   //setup serial.
}


void loop() {
    val = analogRead(3);
    on=val;  
    //mySerial.println(val1);
    dir = digitalRead(4);
    state = digitalRead(2);
    
  if (dir ==  HIGH) {
    out1 = 0;  //counter-clockwise
    out2 = 1;
  } 
  
  else {
    out1 = 1;  //clockwise
    out2 = 0; 
  }
  
  digitalWrite(out2, LOW);

  digitalWrite(out1, state);
  delayMicroseconds(on); //  Microseconds              
  digitalWrite(out1, LOW);
  delayMicroseconds (off); //Microseconds           
}