qmk_firmware/keyboards/nulldesignco/nullpad/v1/keymaps/default/keymap.c

// Copyright 2025 quark-works
// SPDX-License-Identifier: GPL-2.0-or-later

#include QMK_KEYBOARD_H

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

    [0] = LAYOUT_numpad_5x4(
        KC_NUM,  KC_PSLS, KC_PAST, KC_PMNS,
        KC_P7,   KC_P8,   KC_P9,
        KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
        KC_P1,   KC_P2,   KC_P3,
        KC_P0,            KC_PDOT, KC_PENT
    )
};

bool rgb_matrix_indicators_user(void) {
    if (host_keyboard_led_state().num_lock) {
        rgb_matrix_set_color(16, 255, 0, 0);
    }
    return false;
}