#include <TM1637Display.h>

#define CLK 2
#define DIO 3 
#define BTN_INC 4 
#define BTN_DECR 5 

TM1637Display display(CLK, DIO);

uint16_t value = 0; 
unsigned long lastPressTime = 0; 

void setup() {
    pinMode(BTN_INC, INPUT_PULLUP);
    pinMode(BTN_DECR, INPUT_PULLUP);
    display.setBrightness(7); // Parlaklık (0-7)
}

void loop() {
    static unsigned long lastMillis = 0;
    bool upPressed = digitalRead(BTN_INC) == LOW;
    bool downPressed = digitalRead(BTN_DECR) == LOW;

    if (millis() - lastMillis > 100) {
        lastMillis = millis();
        
        if (upPressed) {
            if (value < 0xFFFF) value++;
        } 
        if (downPressed) {
            if (value > 0x0000) value--;
        }
    }

    uint8_t digits[] = {
        (value >> 12) & 0xF,
        (value >> 8)  & 0xF,
        (value >> 4)  & 0xF,
        (value)       & 0xF 
    };
    
    for (int i = 0; i < 4; i++) {
        if (digits[i] > 9) digits[i] += 7; // A-F harflerini göstermek için
    }
    
    display.showNumberDecEx(value, 0, true);
}