Enable controller's built-in WS2812 RGB LED on GP23 via json

keyboards/tutte_coxeter_36k/config.h

@@ -0,0 +1 @@
+#define RGBLIGHT_LAYERS

keyboards/tutte_coxeter_36k/keyboard.json

@@ -10,6 +10,13 @@
         "mousekey": true,
         "nkro": false
     },
+    "ws2812": {
+        "pin": "GP23",
+        "driver": "vendor"
+    },
+    "rgblight": {
+        "led_count": 1
+    },
     "matrix_pins": {
         "cols": ["GP11", "GP10", "GP3", "GP4", "GP7", "GP26", "GP27", "GP28", "GP15", "GP21", "GP19", "GP20", "GP16"],
         "rows": ["GP12", "GP8", "GP9", "GP1", "GP6", "GP2", "GP22", "GP0", "GP13", "GP14", "GP18", "GP17", "GP5"]

keyboards/tutte_coxeter_36k/keymaps/default/keymap.c

@@ -28,3 +28,44 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
                                                 KC_DEL,             KC_TAB,             KC_SPC,    KC_ENT,   KC_ESC,             KC_BSPC
     )
 };
+
+// Only have one LED at index zero:
+const rgblight_segment_t PROGMEM my_num_lock_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 1, HSV_CYAN}
+);
+const rgblight_segment_t PROGMEM my_caps_lock_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 1, HSV_BLUE}
+);
+const rgblight_segment_t PROGMEM my_scroll_lock_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 1, HSV_PURPLE}
+);
+const rgblight_segment_t PROGMEM my_compose_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 1, HSV_ORANGE}
+);
+const rgblight_segment_t PROGMEM my_kana_layer[] = RGBLIGHT_LAYER_SEGMENTS(
+    {0, 1, HSV_GREEN}
+);
+// etc...
+
+// Now define the array of layers. Later layers take precedence
+const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
+    my_num_lock_layer,
+    my_caps_lock_layer,
+    my_scroll_lock_layer,
+    my_compose_layer,
+    my_kana_layer
+);
+
+void keyboard_post_init_user(void) {
+    // Enable the LED layers
+    rgblight_layers = my_rgb_layers;
+}
+
+bool led_update_user(led_t led_state) {
+    rgblight_set_layer_state(0, led_state.num_lock);
+    rgblight_set_layer_state(1, led_state.caps_lock);
+    rgblight_set_layer_state(2, led_state.scroll_lock);
+    rgblight_set_layer_state(3, led_state.compose);
+    rgblight_set_layer_state(4, led_state.kana);
+    return true;
+}

keyboards/tutte_coxeter_36k/keymaps/default/rules.mk

@@ -0,0 +1 @@
+RGBLIGHT_ENABLE = yes

keyboards/tutte_coxeter_36k/keymaps/vial/rules.mk

@@ -1,2 +1,4 @@
 VIA_ENABLE = yes
 VIAL_ENABLE = yes
+
+RGBLIGHT_ENABLE = yes