#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
const byte ROWS = 4; //four rows
const byte COLS = 3; //three columns
char keys[ROWS][COLS] = {
  {'-', '3', '-'},
  {'-', '2', '-'},
  {'-', '1', '-'},
  {'*', '-', '#'}
};
byte rowPins[ROWS] = {2, 3, 4, 5}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {6, 7, 8}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
  Serial.begin(9600);
  for (int i = 0; i < 7; i++) {
    pinMode(9 + i, OUTPUT);
  }
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Tgt: 0  |1|close");
  lcd.setCursor(0, 1);
  lcd.print("Pos: 0  |1|stop ");
  delay(1000);
}
void loop() {
  char key = keypad.getKey();
  if (key) {
    if (key == '*') {
      lcd.setCursor(11, 0);
      lcd.print("open ");
    }
    if (key == '#') {
      lcd.setCursor(11, 0);
      lcd.print("close");
    }
    if (key == '1') {
      lcd.setCursor(4, 0);
      lcd.print(" 0  |1");
    }
    if (key == '2') {
      lcd.setCursor(4, 0);
      lcd.print("-156|2");
    }
    if (key == '3') {
      lcd.setCursor(4, 0);
      lcd.print("-312|3");
    }
    Serial.println(key);
  }
  delay(10);
}
void serialEvent() {
  while (Serial.available()) {
    int data1 = Serial.parseInt();//lift position
    int data2 = Serial.parseInt();//up/down
    int data3 = Serial.parseInt();//open/close
    if (Serial.read() == char(13)) {
      lcd.setCursor(4, 1);
      lcd.print("    ");
      if (data1 >= 0) lcd.setCursor(5, 1);
      else lcd.setCursor(4, 1);
      lcd.print(data1);
      switch (data1) {
        case 1:
          lcd.setCursor(9, 1);
          lcd.print("1");
          digitalWrite(9, HIGH);
          digitalWrite(10, LOW);
          digitalWrite(11, LOW);
          break;
        case -157 ... -155:
          lcd.setCursor(9, 1);
          lcd.print("2");
          digitalWrite(9, LOW);
          digitalWrite(10, HIGH);
          digitalWrite(11, LOW);
          break;
        case -313:
          lcd.setCursor(9, 1);
          lcd.print("3");
          digitalWrite(9, LOW);
          digitalWrite(10, LOW);
          digitalWrite(11, HIGH);
          break;
        default:
          digitalWrite(9, LOW);
          digitalWrite(10, LOW);
          digitalWrite(11, LOW);
          break;
      }
      lcd.setCursor(11, 1);
      if (data2 == 1) {
        lcd.print("up   ");
        digitalWrite(13, HIGH);
        digitalWrite(12, LOW);
      }
      if (data2 == 2) {
        lcd.print("down ");
        digitalWrite(13, LOW);
        digitalWrite(12, HIGH);
      }
      if (data2 == 0 || data2 == 3) {
        lcd.print("stop ");
        digitalWrite(13, LOW);
        digitalWrite(12, LOW);
      }
      lcd.setCursor(11, 0);
      if (data3 == 1) {
        lcd.print("open ");
        digitalWrite(A0, HIGH);
        digitalWrite(A1, LOW);
      }
      if (data3 == 2) {
        lcd.print("close");
        digitalWrite(A0, LOW);
        digitalWrite(A1, HIGH);
      }
      if (data3 == 0 || data3 == 3) {
        digitalWrite(A0, LOW);
        digitalWrite(A1, LOW);
        Serial.println(" ");
      }
    }
  }
}