[Keymap] thunderbird2086 layer status with RGB lighting/matrix (#21063)

keyboards/crkbd/keymaps/thunderbird2086/rgb.c

@@ -0,0 +1,61 @@
+// Copyright 2023 Allen Choi (@thunderbird2086)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#if defined(RGBLIGHT_ENABLE) || defined(RGB_MATRIX_ENABLE)
+#   include QMK_KEYBOARD_H
+
+#   include "keycodes.h"
+
+#   ifdef RGBLIGHT_ENABLE
+
+const rgblight_segment_t PROGMEM _rgb_layer_0[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 56, HSV_BLUE}
+);
+const rgblight_segment_t PROGMEM _rgb_layer_1[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 56, HSV_GREEN}
+);
+const rgblight_segment_t PROGMEM _rgb_layer_2[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 56, HSV_YELLOW}
+);
+
+const rgblight_segment_t* const PROGMEM _rgb_layers[] = RGBLIGHT_LAYERS_LIST(
+    _rgb_layer_0,
+    _rgb_layer_1,
+    _rgb_layer_2
+);
+
+void keyboard_post_init_user(void) {
+    // Enable the LED layers
+    rgblight_layers = _rgb_layers;
+}
+
+void set_rgb_by_layer(layer_state_t state) {
+    rgblight_set_layer_state(0, layer_state_cmp(state, _CODE));
+    rgblight_set_layer_state(1, layer_state_cmp(state, _FUNCTION));
+    rgblight_set_layer_state(2, layer_state_cmp(state, _ADJUST));
+}
+
+#   else
+
+bool rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) {
+    for (uint8_t i = led_min; i < led_max; i++) {
+        switch(get_highest_layer(layer_state|default_layer_state)) {
+            case _CODE:
+                rgb_matrix_set_color(i, RGB_BLUE);
+                break;
+            case _FUNCTION:
+                rgb_matrix_set_color(i, RGB_GREEN);
+                break;
+            case _ADJUST:
+                rgb_matrix_set_color(i, RGB_YELLOW);
+                    //  RGB_WHITE caused crash
+                break;
+            default:
+                break;
+        }
+    }
+    return false;
+}
+
+#   endif
+#endif