#pragma once
#include <stdint.h>

// 5×5 button matrix
// COL_0 × ROW_0–3 = encoder SW buttons
// COL_1–4 × ROW_0–4 = 20 Cherry MX buttons
// COL_0 × ROW_4   = not connected

#define MATRIX_COLS  5
#define MATRIX_ROWS  5
#define MATRIX_KEYS  25   // col * MATRIX_ROWS + row

// Callback: key index (0–24), pressed = true / released = false
typedef void (*matrix_cb_t)(uint8_t key, bool pressed);

void matrix_init(matrix_cb_t cb);
void matrix_scan();

// Helper: key index from logical position
inline uint8_t matrix_key(uint8_t col, uint8_t row) {
    return col * MATRIX_ROWS + row;
}