// YWROBOT
// Compatible with the Arduino IDE 1.0
// Library version:1.1
#include <LiquidCrystal_I2C.h>
#include <IRremote.h>
#define PIN_RECEIVER 5

IRrecv receiver(PIN_RECEIVER);
LiquidCrystal_I2C lcd(0x27,20,4);
// set the LCD address to 0x27 for a 16 chars and 2 line display

float cm;
float inches;

long readUltrasonicDistance(int triggerPin, int echoPin)
{
	pinMode(triggerPin, OUTPUT);  // Clear the trigger
	digitalWrite(triggerPin, LOW);
	delayMicroseconds(2);
	// Sets the trigger pin to HIGH state for 10 microseconds
	digitalWrite(triggerPin, HIGH);
	delayMicroseconds(10);
	digitalWrite(triggerPin, LOW);
	pinMode(echoPin, INPUT);
	// Reads the echo pin, and returns
	// the sound wave travel time in microseconds
	return pulseIn(echoPin, HIGH);
}

void setup()
{	
	pinMode(4, OUTPUT);
  Serial.begin(9600);
	receiver.enableIRIn(); // Start the receiver

  lcd.init();	// initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
	lcd.print("Bienvenue Habib");
	delay(2000);
  lcd.print("--> Distance <--");
	delay(1000);
	lcd.clear();
	
}

void loop()
{

  cm = 0.0344/2 * readUltrasonicDistance(3, 2);
	inches = (cm / 2.54);
  /*
	Serial.print("Inches ");
	Serial.print(inches, 1);
	Serial.print("\t");
  Serial.print("cm ");
	Serial.println(cm, 1);
	*/
	 
	digitalWrite(4, HIGH);
	delay(100);
	lcd.setCursor(0,0);
	lcd.print("Inches");
	lcd.setCursor(4,0);
	lcd.setCursor(12,0);
	lcd.print("cm");
	lcd.setCursor(1,1);
	lcd.print(inches, 1);
	lcd.setCursor(11,1);
	lcd.print(cm, 1);
	lcd.setCursor(14,1);
	delay(500);
	digitalWrite(4, LOW);
	delay(1000);
	lcd.clear();
	if (receiver.decode()) {
    translateIR();
    receiver.resume();  // Receive the next value
  }
	delay(2000);
}
void lcdPrint(char* text)
{
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("button pressed:");
  lcd.setCursor(0, 1);
  lcd.print(text);
  lcd.print(" code: ");
  lcd.print(receiver.decodedIRData.command);
}

void translateIR()
{
  // Takes command based on IR code received
  switch (receiver.decodedIRData.command) {
    case 162:
      lcdPrint("POWER");
      break;
    case 226:
      lcdPrint("MENU");
      break;
    case 34:
      lcdPrint("TEST");
      break;
    case 2:
      lcdPrint("PLUS");
      break;
    case 194:
      lcdPrint("BACK");
      break;
    case 224:
      lcdPrint("PREV.");
      break;
    case 168:
      lcdPrint("PLAY");
      break;
    case 144:
      lcdPrint("NEXT");
      break;
    case 104:
      lcdPrint("num: 0");
      break;
    case 152:
      lcdPrint("MINUS");
      break;
    case 176:
      lcdPrint("key: C");
      break;
    case 48:
      lcdPrint("num: 1");
      break;
    case 24:
      lcdPrint("num: 2");
      break;
    case 122:
      lcdPrint("num: 3");
      break;
    case 16:
      lcdPrint("num: 4");
      break;
    case 56:
      lcdPrint("num: 5");
      break;
    case 90:
      lcdPrint("num: 6");
      break;
    case 66:
      lcdPrint("num: 7");
      break;
    case 74:
      lcdPrint("num: 8");
      break;
    case 82:
      lcdPrint("num: 9");
      break;
    default:
      lcd.clear();
      lcd.print(receiver.decodedIRData.command);
      lcd.print(" other button");
  }
}