#include <Keypad.h>
#include <SevSeg.h>

SevSeg sevseg;

const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};
uint8_t colPins[COLS] = { 4, 2, 15, 14 };
uint8_t rowPins[ROWS] = { 23, 19, 18, 5 };
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup() {
  sevseg.begin(COMMON_ANODE, D3, 13, 12, 27, 26, 17, 16, D2);
  sevseg.setBrightness(90);
}

void loop() {
  char key = keypad.getKey();
  
  if (key) {
    if (key >= '0' && key <= '9') {
      int number = key - '0';
      sevseg.setNumber(number);
    } else {
      sevseg.clear();  // ลบการแสดงผลทั้งหมดหากไม่ได้ป้อนตัวเลข
    }
  }

  sevseg.refreshDisplay();
}