/*Setup code programming C++.
Create systems & Design Control Arduino UNO R3.
MISSIONs to skills. [Idea Connecting Collaboration.]
*/

//Declare Variables

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

//Variables for "HC-SR04"
int echo = 2;
int trig = 3;

long duration = 0;
int cm = 0;
int inch = 0;

int zero = 0;

void setup(){
  Serial.begin(9600);
  
  pinMode(trig , OUTPUT);
  pinMode(echo , INPUT);
  
  lcd.begin(16,2);  
}

void loop(){

  digitalWrite(trig, LOW);
  digitalWrite(trig, HIGH);
  digitalWrite(trig, LOW);

  duration = pulseIn(echo,HIGH);
  cm = duration*0.034/2;
  inch = duration*0.0133/2;

  if (cm <= 2) {
    cm = zero;
  };

  Serial.print("CM: ");
  Serial.println(cm);

  //Data of Row 1 (TOP ROW)
  lcd.setCursor(0, 0);
  lcd.print("Value  CM ");
  lcd.setCursor(11, 0);
  lcd.println(float(cm));
  /*
  lcd.setCursor(14, 0);
  lcd.print("CM");
  */

  //Data of Row 2 (BOTTOM ROW)
  lcd.setCursor(0, 1);
  lcd.print("Value Inch");
  lcd.setCursor(11, 1);
  lcd.println(float(inch));
  /*
  lcd.setCursor(13, 1);
  lcd.print("Inch");
  */

  delay(500);
}
/*
void setZero() {
  cm
  if(cm >= 100) {
    lcd.setCursor(10, 0);
    lcd.println(cm);
  };

}
*/