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#include "pico/stdlib.h"
#define OUT true
#define IN false
#define KEYPAD_LEN 4
#pragma once
class Keypad {
private:
// Start private attributes.
uint *rows{};
uint *cols{};
char chars[4][4];
// End private attributes.
// Start private methods.
void initCharArray(char chars[4][4]);
void init();
uint pressedColumn();
void pullPinsDown(uint *pins);
void restartPins();
// End private methods.
public:
// Start public methods.
Keypad(uint *rows, uint *cols, char chars[4][4]);
bool keyPressed();
char getKey();
// End public methods.
};
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