qmk_firmware/keyboards/frooastboard/walnut/keymaps/via/keymap.c

// Copyright 2022 Simon Benezan (@Frooastside)
// SPDX-License-Identifier: GPL-3.0-or-later

#include QMK_KEYBOARD_H

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
	[0] = LAYOUT_all(
		KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,          KC_INS,  KC_HOME, KC_PGUP,
		KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,          KC_DEL,  KC_END,  KC_PGDN,
		KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
		KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,                            KC_UP,
		KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    KC_RALT, MO(1),   KC_MENU, KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT),

	[1] = LAYOUT_all(
		KC_GRV,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  EE_CLR,           KC_PSCR, KC_SCRL, KC_PAUS,
		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS,
		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG,
		KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                            RGB_VAI,
		KC_TRNS, GUI_TOG, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,                   RGB_RMOD,RGB_VAD, RGB_MOD)
};

#if defined(RGB_MATRIX_ENABLE) && defined(VIA_CUSTOM_LIGHTING_ENABLE)

// VIA supports only 4 discrete values for effect speed; map these to some
// useful speed values for RGB Matrix.
enum speed_values {
    RGBLIGHT_SPEED_0 = UINT8_MAX / 16, // not 0 to avoid really slow effects
    RGBLIGHT_SPEED_1 = UINT8_MAX / 4,
    RGBLIGHT_SPEED_2 = UINT8_MAX / 2,     // matches the default value
    RGBLIGHT_SPEED_3 = UINT8_MAX / 4 * 3, // UINT8_MAX is really fast
};

static uint8_t speed_from_rgblight(uint8_t rgblight_speed) {
    switch (rgblight_speed) {
        case 0:
            return RGBLIGHT_SPEED_0;
        case 1:
            return RGBLIGHT_SPEED_1;
        case 2:
        default:
            return RGBLIGHT_SPEED_2;
        case 3:
            return RGBLIGHT_SPEED_3;
    }
}

static uint8_t speed_to_rgblight(uint8_t rgb_matrix_speed) {
    if (rgb_matrix_speed < ((RGBLIGHT_SPEED_0 + RGBLIGHT_SPEED_1) / 2)) {
        return 0;
    } else if (rgb_matrix_speed < ((RGBLIGHT_SPEED_1 + RGBLIGHT_SPEED_2) / 2)) {
        return 1;
    } else if (rgb_matrix_speed < ((RGBLIGHT_SPEED_2 + RGBLIGHT_SPEED_3) / 2)) {
        return 2;
    } else {
        return 3;
    }
}

void via_qmk_rgblight_get_value(uint8_t *data) {
    uint8_t *value_id   = &(data[0]);
    uint8_t *value_data = &(data[1]);
    switch (*value_id) {
        case id_qmk_rgblight_brightness: {
            value_data[0] = rgb_matrix_get_val();
            break;
        }
        case id_qmk_rgblight_effect: {
            value_data[0] = rgb_matrix_is_enabled() ? rgb_matrix_get_mode() : 0;
            break;
        }
        case id_qmk_rgblight_effect_speed: {
            value_data[0] = speed_to_rgblight(rgb_matrix_get_speed());
            break;
        }
        case id_qmk_rgblight_color: {
            value_data[0] = rgb_matrix_get_hue();
            value_data[1] = rgb_matrix_get_sat();
            break;
        }
    }
}

void via_qmk_rgblight_set_value(uint8_t *data) {
    uint8_t *value_id   = &(data[0]);
    uint8_t *value_data = &(data[1]);
    switch (*value_id) {
        case id_qmk_rgblight_brightness: {
            rgb_matrix_sethsv_noeeprom(rgblight_get_hue(), rgblight_get_sat(), value_data[0]);
            break;
        }
        case id_qmk_rgblight_effect: {
            if (value_data[0] == 0) {
                rgb_matrix_disable_noeeprom();
            } else {
                rgb_matrix_enable_noeeprom();
                rgb_matrix_mode_noeeprom(value_data[0]);
            }
            break;
        }
        case id_qmk_rgblight_effect_speed: {
            rgb_matrix_set_speed_noeeprom(speed_from_rgblight(value_data[0]));
            break;
        }
        case id_qmk_rgblight_color: {
            rgb_matrix_sethsv_noeeprom(value_data[0], value_data[1], rgblight_get_val());
            break;
        }
    }
}

void raw_hid_receive_kb(uint8_t *data, uint8_t length) {
    uint8_t *command_id   = &(data[0]);
    uint8_t *command_data = &(data[1]);
    switch (*command_id) {
        case id_lighting_set_value:
            via_qmk_rgblight_set_value(command_data);
            break;
        case id_lighting_get_value:
            via_qmk_rgblight_get_value(command_data);
            break;
        case id_lighting_save:
            eeconfig_update_rgb_matrix();
            break;
        default:
            // Unhandled message.
            *command_id = id_unhandled;
            break;
    }
}

#endif // defined(RGB_MATRIX_ENABLE) && defined(VIA_CUSTOM_LIGHTING_ENABLE)