#include "SevSeg.h"
SevSeg sevseg; //Instantiate a seven segment object

// ตัวแปร ใช้สำหรับอุปกรณ์ HC-SR04
int trigger = 2 ;
int echo = 13 ;
long duration = 0;
int cm = 0;
int inch = 0;

void setup() {
  byte numDigits = 3;
  byte digitPins[] = { 3, 4, 5,};
  byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12};
  bool resistorsOnSegments = true; // ตัวต้านทานบนเซกเมนต์
  byte hardwareConfig = COMMON_ANODE; // การกำหนดค่าฮาร์ดแวร์
  bool updateWithDelays = false; // Default 'false' is Recommended
  bool leadingZeros = false; // ตัวเลือก true = ต้องการตัวเลข 0 นำหน้า
  bool disableDecPoint = true; // ปิดการใช้งานจุดทศนิยม

  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments,
  updateWithDelays, leadingZeros, disableDecPoint);
  sevseg.setBrightness(0);

  
  Serial.begin(9600);
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);

}

void loop() {
  duration = pulseIn(echo,HIGH);
  cm = duration*0.034/2;
  inch = duration*0.0133/2;
  
  static int deciSeconds = 0 ;
  sevseg.setNumber(deciSeconds,0);
  sevseg.refreshDisplay();
  
  sensorReview();
  delay(100);
}

void sensorReview() {
  digitalWrite(trigger, LOW);
  digitalWrite(trigger, HIGH);
  digitalWrite(trigger, LOW);

  duration = pulseIn(echo,HIGH);
  cm = duration*0.034/2;
  inch = duration*0.0133/2;
  Serial.print("CM: ");
  Serial.println(cm);
  delay(100);
}

/*{
  static unsigned long timer = millis(); // กำหนดค่า ตัวจับเวลา
  static int deciSeconds = 0; 

  if (millis() - timer >= 100) {
    timer += 100;
    deciSeconds++; // 100 milliSeconds is equal to 1 deciSecond

    if (deciSeconds == 10000) { // Reset to 0 after counting for 1000 seconds.
      deciSeconds=0;
    }
    sevseg.setNumber(deciSeconds, 0);
  }
  sevseg.refreshDisplay(); // Must run repeatedly
}
*/