#include <LiquidCrystal_I2C.h>
#include <IRremote.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
int ledPin = 2;
int warningled = 9;
int gau1 = 0;
int gau2 = 1;
int gau3 = A3;
int gau4 = A4;
const float BETA = 3950;
// define the switch pins
int switch1 = 7;
int switch2 = 8;
int switch3 = 12;
int switch4 = 13;
int switch5 = 4;
int irPin = 11;
IRrecv irrecv(irPin);
decode_results results;
// define the delay time for each mode
int delayTime1 = 600;
int delayTime2 = 250;
int delayTime3 = 100;
int delayTime4 = 75;

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  // set the LED pin as an output
  pinMode(ledPin, OUTPUT);
  irrecv.enableIRIn();
  pinMode(switch1, INPUT_PULLUP);
  pinMode(switch2, INPUT_PULLUP);
  pinMode(switch3, INPUT_PULLUP);
  pinMode(switch4, INPUT_PULLUP);
  pinMode(switch5, INPUT_PULLUP);
  pinMode(warningled, OUTPUT);
  pinMode(gau1, OUTPUT);
}

void loop() {
  // check the state of each switch
  int mode1 = digitalRead(switch1);
  int mode2 = digitalRead(switch2);
  int mode3 = digitalRead(switch3);
  int mode4 = digitalRead(switch4);
  int mode5 = digitalRead(switch5);

  // blink the LED according to the mode
  if (mode1 == LOW) {
    lcd.setCursor(0,0);
    lcd.print("Idle Rumbble         ");
    lcd.setCursor(0,1);
    lcd.println("Mode: 1  500 m/s");
    analogWrite(gau1, HIGH);
    digitalWrite(ledPin, HIGH);
    delay(delayTime1);
    digitalWrite(ledPin, LOW);
    delay(delayTime1);
    Serial.println("Idle Rumble 500 m/s");
  } else if (mode2 == LOW) {
    lcd.setCursor(0,0);
    lcd.print("Idle Rumbble        ");
    lcd.setCursor(0,1);
    lcd.println("Mode: 2  250 m/s");
    digitalWrite(ledPin, HIGH);
    delay(delayTime2);
    digitalWrite(ledPin, LOW);
    delay(delayTime2);
    Serial.println("Idle Rumble 250 m/s");
  } else if (mode3 == LOW) {
    lcd.setCursor(0,0);
    lcd.print("Idle Rumbble     ");
    lcd.setCursor(0,1);
    lcd.println("Mode: 3  100 m/s");
    digitalWrite(ledPin, HIGH);
    delay(delayTime3);
    digitalWrite(ledPin, LOW);
    delay(delayTime3);
    Serial.println("Idle Rumble 100 m/s");
  } else if (mode4 == LOW) {
    int analogValue = analogRead(A0);
    float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
    lcd.setCursor(0,0);
    lcd.print("RapidBackfire    ");
    lcd.setCursor(0,1);
    lcd.println(celsius);
    lcd.println("C Temp");
    digitalWrite(ledPin, HIGH);
    delay(delayTime4);
    digitalWrite(ledPin, LOW);
    delay(delayTime4);
    Serial.println("Rapid Backfire 75 m/s");
    Serial.print("Temperature: ");
    Serial.println(" ℃");
  }
  else if (mode5 == LOW) {
    lcd.setCursor(0,0);
    lcd.print("Please Standby   ");
    lcd.setCursor(0,1);
    lcd.println("ConnectBluetooth");
    Serial.println("Turn ON Please");
    digitalWrite(warningled, HIGH);
    delay(250);
    digitalWrite(warningled, LOW);
    delay(500);
  }
  else if (mode1,mode2,mode3,mode4,mode5 == HIGH) {
    int analogValue = analogRead(A0);
    float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
    lcd.setCursor(0,0);
    lcd.print("ENGINE TEMP        ");
    lcd.setCursor(0,1);
    lcd.print(celsius);
    lcd.println(" WARN!");
    delay(500);
    Serial.println("select Switch");
  }
  
}