qmk-firmware/keyboards/work_louder/micro/keymaps/default/keymap.c

// Copyright 2022 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
// SPDX-License-Identifier: GPL-2.0-or-later

#include QMK_KEYBOARD_H

enum custom_keycodes {
    LED_LEVEL = SAFE_RANGE,
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    LAYOUT(
        KC_MPLY, KC_9,    KC_0,    KC_NO,
        KC_5,    KC_6,    KC_7,    KC_8,
        KC_1,    KC_2,    KC_3,    KC_4,
        TO(1),   KC_DOT,  KC_COMM, LED_LEVEL
    ),
    LAYOUT(
        KC_1,    KC_2,    KC_3,    KC_4,
        KC_5,    KC_6,    KC_7,    KC_8,
        KC_9,    KC_0,    KC_A,    KC_B,
        TO(2),   KC_C,    KC_D,    KC_E
    ),
    LAYOUT(
        KC_1,    KC_2,    KC_3,    KC_4,
        KC_5,    KC_6,    KC_7,    KC_8,
        KC_9,    KC_0,    KC_A,    KC_B,
        TO(3),   KC_C,    KC_D,    KC_E
    ),
    LAYOUT(
        KC_1,    KC_2,    KC_3,    KC_4,
        KC_5,    KC_6,    KC_7,    KC_8,
        KC_9,    KC_0,    KC_A,    KC_B,
        TO(0),   KC_C,    LED_LEVEL,KC_E
    ),

};

typedef union {
    uint32_t raw;
    struct {
        uint8_t led_level : 3;
    };
} work_louder_config_t;

work_louder_config_t work_louder_config;

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case LED_LEVEL:
            if (record->event.pressed) {
                work_louder_config.led_level++;
                if (work_louder_config.led_level > 4) {
                    work_louder_config.led_level = 0;
                }
                work_louder_micro_led_all_set((uint8_t)(work_louder_config.led_level * 255 / 4));
                eeconfig_update_user(work_louder_config.raw);
                layer_state_set_kb(layer_state);
            }
            break;
    }
    return true;
}

#if defined(ENCODER_MAP_ENABLE)
const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
    { ENCODER_CCW_CW(KC_VOLD, KC_VOLU),           ENCODER_CCW_CW(C(KC_Z), C(KC_Y))  },
    { ENCODER_CCW_CW(_______, _______),           ENCODER_CCW_CW(_______, _______)  },
    { ENCODER_CCW_CW(_______, _______),           ENCODER_CCW_CW(_______, _______)  },
    { ENCODER_CCW_CW(_______, _______),           ENCODER_CCW_CW(_______, _______)  },
};
#endif


layer_state_t layer_state_set_user(layer_state_t state) {
    layer_state_cmp(state, 1) ? work_louder_micro_led_1_on(): work_louder_micro_led_1_off();
    layer_state_cmp(state, 2) ? work_louder_micro_led_2_on(): work_louder_micro_led_2_off();
    layer_state_cmp(state, 3) ? work_louder_micro_led_3_on(): work_louder_micro_led_3_off();

    return state;
}

void eeconfig_init_user(void) {
    work_louder_config.raw = 0;
    work_louder_config.led_level = 1;
    eeconfig_update_user(work_louder_config.raw);
}

void matrix_init_user(void) {
    work_louder_config.raw = eeconfig_read_user();
    work_louder_micro_led_all_set((uint8_t)(work_louder_config.led_level * 255 / 4));
}