#include <SevSeg.h>

// Create a SevSeg object
SevSeg sevseg;

// Define button pins
const int startButtonPin = 2; // Start button
const int resetButtonPin = 13; // Reset button

// Variables for counting
volatile bool counting = false;
unsigned long startTime;
float countValue = 0.0;

void setup() {
  // Setup 7-segment display
  byte numDigits = 3;
  byte digitPins[] = {2, 3, 4}; // Update according to your wiring
  byte segmentPins[] = {4, 5, 6, 7, 8, 9, A0, A1}; // Update according to your wiring
  sevseg.begin(COMMON_CATHODE, numDigits, digitPins, segmentPins);
  
  // Setup button pins
  pinMode(startButtonPin, INPUT_PULLUP);
  pinMode(resetButtonPin, INPUT_PULLUP);
  
  // Attach interrupts for button presses
  attachInterrupt(digitalPinToInterrupt(startButtonPin), startCounting, FALLING);
  attachInterrupt(digitalPinToInterrupt(resetButtonPin), resetCounting, FALLING);
  
  // Initialize display
  sevseg.setNumber(0, 1);
}

void loop() {
  if (counting) {
    unsigned long elapsedTime = millis() - startTime;

    // Count from 0.0 to 88.0
    if (elapsedTime < 15000) { // Count for 15 seconds
      countValue = (elapsedTime / 1000.0) * (88.0 / 15.0); // Scale to 0-88
      sevseg.setNumber(countValue, 1);
    } else {
      // After 15 seconds, show the middle display's bottom dot
      sevseg.setNumber(0, 1); // Reset displayed value
      sevseg.setDecimalPoint(1); // Show bottom dot
    }
  }
  
  sevseg.refreshDisplay(); // Refresh display
}

void startCounting() {
  if (!counting) {
    counting = true;
    startTime = millis();
  }
}

void resetCounting() {
  counting = false;
  countValue = 0.0;
  sevseg.setNumber(0, 1); // Reset display
  sevseg.setDecimalPoint(0); // Turn off the bottom dot
}