#define LED_ON LOW
#define LED_OFF HIGH
#define DG1 23
#define DG2 25
#define DG3 18
#define DG4 14
#define A 32
#define B 13
#define C 5
#define D 22
#define E 19
#define F 33
#define G 27
#define DP 21
#define DPColon 26

hw_timer_t *timer1 = NULL;
unsigned int number = 0;
unsigned int seconds , tens, minutes , hours;
int status7Seg = 1;
int mins = 0;
int secs = 0;
bool statusClock = true;
unsigned long current = 0;
unsigned long last1sec = 0;
unsigned long last500msec = 0;
bool toggleColon = true;

void setup() {
  pinMode(DG1, OUTPUT);
  pinMode(DG2, OUTPUT);
  pinMode(DG3, OUTPUT);
  pinMode(DG4, OUTPUT);
  pinMode(A, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(C, OUTPUT);
  pinMode(D, OUTPUT);
  pinMode(E, OUTPUT);
  pinMode(F, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(DP, OUTPUT);
  pinMode(DPColon, OUTPUT);

  hours = number / 1000;
  minutes = (number - ((hours)*1000)) / 100; 
  tens = (number - (hours * 1000) - (minutes * 100)) / 10; 
  seconds = (number - (hours * 1000) - (minutes * 100) - (tens * 10)); 

  Serial.begin(115200);

  pinMode(DG1, OUTPUT);
  pinMode(DG2,  OUTPUT);
  pinMode(DG3,  OUTPUT);
  pinMode(DG4, OUTPUT);
  pinMode(DPColon,  OUTPUT);
  pinMode(A,  OUTPUT);
  pinMode(B,  OUTPUT);
  pinMode(C,  OUTPUT);
  pinMode(D,  OUTPUT);
  pinMode(E,  OUTPUT);
  pinMode(F,  OUTPUT);
  pinMode(G,  OUTPUT);
  pinMode(DP,  OUTPUT);

  timer1 = timerBegin(1000000);
  timerAttachInterrupt(timer1, &timer1_callback);
  timerAlarm(timer1, 10000, true, 0);
}

void loop() {
  current = millis();
  if(current - last1sec >= 1000){
    last1sec = current;

    hours = mins / 10;
    minutes = (mins - ((hours) * 10)) / 1; 
    tens = secs / 10; 
    seconds = (secs - ((tens) * 10)) / 1; 

    if(statusClock == true){
      secs++;
      if(secs >= 60){
        secs = 0;
        mins++;
      }
      if(mins >= 60){
        mins = 0;
      }
      Serial.printf("Clock Run ->  %02d:%02d\n", mins, secs);
    }else{
       Serial.printf("Clock Stop ->  %02d:%02d\n", mins, secs);
    }

    if(Serial.available() > 0){
      String rxuart = Serial.readString();
      int rxuartint = rxuart.toInt();
      if(rxuartint == 1){
        statusClock = true;
        Serial.println("Clock Run : " + rxuart);
      }else if(rxuartint == 2){
        statusClock = false;
        Serial.println("Clock Stop : " + rxuart);
      }
    }
  }

  if(current - last500msec >= 500){
    last500msec = current;
    if(statusClock == true){
      if(toggleColon == true){
        digitalWrite(DPColon, HIGH);
      }else{
        digitalWrite(DPColon, LOW);
      }
      toggleColon = !toggleColon;
    }
  }
}

void timer1_callback(void) {
  showNumber(10);
  digitalWrite(DG1, HIGH);
  digitalWrite(DG2, HIGH);
  digitalWrite(DG3, HIGH);
  digitalWrite(DG4, HIGH);


  if (status7Seg == 1) {
    showNumber(hours);
    digitalWrite(DG1, LOW); //ให้ติดใส่low
    digitalWrite(DG2, HIGH);
    digitalWrite(DG3, HIGH);
    digitalWrite(DG4, HIGH);
    status7Seg = 2;
  } else if (status7Seg == 2) {
    showNumber(minutes);
    digitalWrite(DG1, HIGH);
    digitalWrite(DG2, LOW);
    digitalWrite(DG3, HIGH);
    digitalWrite(DG4, HIGH);
    status7Seg = 3;
  } else if (status7Seg == 3) {
    showNumber(tens);
    digitalWrite(DG1, HIGH);
    digitalWrite(DG2, HIGH);
    digitalWrite(DG3, LOW);
    digitalWrite(DG4, HIGH);
    status7Seg = 4;
  } else if (status7Seg == 4) {
    showNumber(seconds);
    digitalWrite(DG1, HIGH);
    digitalWrite(DG2, HIGH);
    digitalWrite(DG3, HIGH);
    digitalWrite(DG4, LOW);
    status7Seg = 1;
  } else {
    status7Seg = 1;
  }
}

void showNumber(int num) {
  if (num == 0) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, LOW);
  } else if (num == 1) {
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  } else if (num == 2) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, LOW);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, LOW);
    digitalWrite(G, HIGH);
  }else if (num == 3) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, HIGH);
  }else if (num == 4) {
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
  }else if (num == 5) {
    digitalWrite(A, HIGH);
    digitalWrite(B, LOW);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
  }else if (num == 6) {
    digitalWrite(A, HIGH);
    digitalWrite(B, LOW);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
  }else if (num == 7) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }else if (num == 8) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
  }else if (num == 9) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
  }else {
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }
}