/*
 * Author:        Alberto Machado
 * Project:       Palm Harvester
 * Year:          Fall 2015 - Spring 2016
 * Description:   This code is used for the arduino attached on the cart.
 * It moves the telescoping pole up and down. Uses the receiver functions from
 * the RCSwitch library to receive the wireless signal from the transmitter and uses those values
 * to move the pole either up or down.
 */
#include <RCSwitch.h>

RCSwitch mySwitch = RCSwitch();

const int button_C = 8;   //value received from controller when button C is pressed
const int button_D = 9;   //value received from controller when button D is pressed
const int pwm = 11;       //port on the Arduino used to connect to the "pwm" port of the motor driver
const int dir = 13;       //port on the Arduino used to connect to the "dir" port of the motor driver
const int microsec_delay = 2000; // delay in microseconds of the winch depicting how long it'll be on

void setup() {
  Serial.begin(115200);
  mySwitch.enableReceive(0); // Receiver pin 2
  // set both ports to output
  pinMode(pwm, OUTPUT);
  pinMode(dir, OUTPUT);
}

void loop() {

 if(mySwitch.available()) {
    int value = mySwitch.getReceivedValue();

    if(value == button_C) // when button C is pressed
    {        // moves pole up
      digitalWrite(dir, LOW);  // set dir to LOW
      digitalWrite(pwm, HIGH); // turn on winch
      delay(microsec_delay);   // Software delay in microseconds
      digitalWrite(pwm, LOW);  // turn off winch
    }
    else if(value == button_D) // when button D is pressed
    {        // moves pole down
      digitalWrite(dir, HIGH); // set dir to HIGH
      digitalWrite(pwm, HIGH); // turn on winch
      delay(microsec_delay);   // Software delay in microseconds
      digitalWrite(pwm, LOW);  // turn off winch
    }
    else                       // if neither buttons are pressed
      digitalWrite(pwm, LOW);  // turn off winch
  }
}