#include <LiquidCrystal_I2C.h>
#include <GyverTM1637.h>
#include <RTClib.h>

const int PinTrig[4] = {25, 26, 27, 14};
const int PinEcho[4] = {34, 35, 32, 33};
int CLK = 12;
int DIO = 13; 

LiquidCrystal_I2C LCD_SR(0x27, 20, 4);
GyverTM1637 disp(CLK,DIO);
RTC_DS1307 rtc;

void setup() {
  Serial.begin(115200);
  LCD_SR.init();
  LCD_SR.backlight();
  disp.clear();
  disp.brightness(7);
  disp.point(1);
  rtc.begin();

  for (int i = 0; i < 4; i++) {
    pinMode(PinEcho[i], INPUT);
    pinMode(PinTrig[i], OUTPUT);
  }
}

void loop() {
  ultrasonicCycle();
  clk();
}

void ultrasonicCycle() {
  for (int i = 0; i < 4; i++) {
    long duration, distance;
    
    // กระตุ้นสัญญาณ Trig
    digitalWrite(PinTrig[i], LOW);
    delayMicroseconds(2);
    digitalWrite(PinTrig[i], HIGH);
    delayMicroseconds(10);
    digitalWrite(PinTrig[i], LOW);
    
    // วัดเวลาที่ Echo รับสัญญาณกลับมา
    duration = pulseIn(PinEcho[i], HIGH);
    distance = (duration / 2) / 29.1; // คำนวณระยะทางเป็นเซนติเมตร
    LCD_SR.setCursor(0, i);
    LCD_SR.print("Distance " + String(i+1) + " : " + String(distance) + " cm");
  }
}

void clk() {
  DateTime now=rtc.now();
  byte hrs=now.hour();
  byte mins=now.minute();
  disp.displayClock(hrs,mins);

  disp.point(1);
  delay(1000);
  disp.point(0);
  delay(1000);
}