#define SWB13 PB13
#define SWB14 PB14
#define SWB15 PB15
#define LED_START PA3
#define LED_PAUSE PC15
#define LED_RESET PB2

int segPinsTens[] = {PC7, PA7, PA6, PA5, PB9, PB8, PD3};
int segPinsOnes[] = {PA9, PA15, PB5, PB4, PB10, PB3, PA10};

byte numbers[10][7] = {
  {0,0,0,0,0,0,1}, {1,0,0,1,1,1,1}, {0,0,1,0,0,1,0},
  {0,0,0,0,1,1,0}, {1,0,0,1,1,0,0}, {0,1,0,0,1,0,0},
  {0,1,0,0,0,0,0}, {0,0,0,1,1,1,1}, {0,0,0,0,0,0,0},
  {0,0,0,0,1,0,0}
};

int countNum = 0;
bool running = false;
unsigned long lastCountTime = 0;

void setup() {
  pinMode(SWB13, INPUT_PULLUP);
  pinMode(SWB14, INPUT_PULLUP);
  pinMode(SWB15, INPUT_PULLUP);

  pinMode(LED_START, OUTPUT);
  pinMode(LED_PAUSE, OUTPUT);
  pinMode(LED_RESET, OUTPUT);

  for (int i = 0; i < 7; i++) {
    pinMode(segPinsTens[i], OUTPUT);
    pinMode(segPinsOnes[i], OUTPUT);
  }
}

void loop() {
  bool btnStart = !digitalRead(SWB13);
  bool btnPause = !digitalRead(SWB14);
  bool btnReset = !digitalRead(SWB15);

  digitalWrite(LED_START, btnStart);
  digitalWrite(LED_PAUSE, btnPause);
  digitalWrite(LED_RESET, btnReset);

  // Logic ปุ่ม
  if (btnStart) running = true;
  if (btnReset) { running = false; countNum = 0; }

  if (running && !btnPause && millis() - lastCountTime >= 1000) {
    lastCountTime = millis();
    if (++countNum > 99) countNum = 0;
  }

  // แสดงเลข
  showDigit(countNum / 10, segPinsTens);
  showDigit(countNum % 10, segPinsOnes);
}

void showDigit(int num, int* segPins) {
  for (int i = 0; i < 7; i++) digitalWrite(segPins[i], numbers[num][i]);
}