/**
 * @file    keypad.h
 * @brief   Simple interrupt-driven 4×4 keypad driver.
 */

#ifndef KEYPAD_H
#define KEYPAD_H

#include <stdint.h>

/** Signature of the callback invoked on a confirmed key press */
typedef void (*KeypadCallback_t)(char key);

/**
 * @brief  Initialize the keypad pins & interrupts.
 * @param  cb  Function to call when a key is pressed.
 */
void initKeypadInterrupts(KeypadCallback_t cb);

#endif // KEYPAD_H