[2016-03-28] Challenge #260 [Easy] Garage Door Opener - Arduino

garagedoorbonus.ino

#include <Servo.h>

Servo garageDoor;
int pos = 1;

#define remotePin 6
#define sensorPin 7

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  garageDoor.attach(9);
  pinMode(remotePin, INPUT);
  pinMode(sensorPin, INPUT);
  garageDoor.write(pos);
  delay(15);
}

void loop() {
  //states: 0 - closed, 2 - open, 1 - opening, -1 - closing
  static int state = 0;
  int remoteState, sensorState;
  remoteState = digitalRead(remotePin);
  sensorState = digitalRead(sensorPin);
  
  switch (state) {
    case -1:
      if (remoteState == HIGH) {
        state = 1;
        delay(100);
        break;
      } else if(pos == 1) {
        state = 0;
        break;
      } else if(sensorState == HIGH) {
        break;
      } else {
        pos -= 1;
        garageDoor.write(pos);
        delay(100);
        break;
      }
      break;

    case 0:
      if (remoteState == HIGH) {
        state = 1;
        delay(100);
        break;
      }
      break;

    case 1:
      if (sensorState == HIGH){
        if(pos == 90){
          state = 2;
          break;
        } else {
          pos += 1;
          garageDoor.write(pos);
          delay(100);
          break;
        }
      } else if (remoteState == HIGH) {
        state = -1;
        delay(100);
        break;
      } else if(pos == 90) {
        state = 2;
        break;
      } else {
        pos += 1;
        garageDoor.write(pos);
        delay(100);
        break;
      }
      break;

    case 2:
      if (remoteState == HIGH) {
        state = -1;
        delay(100);
        break;
      }
      break;

    default:
      Serial.println ( "In Default, I shouldn't be here.  State = " + String(state));
      pos = 0;
      state = 0;

      break;
  }
}