Add ability to blink lighting layer for a specified duration (#8760)

* Implement momentarily blink of lighting layers

* Refactor spidey3 userspace to use rgb layer blink

* Remove un-necessary line from example in documentation

* Revert "Refactor spidey3 userspace to use rgb layer blink"

This reverts commit 831649bb680c41c6d663ae6fa86d13f4f8bebdd8.

* Adds a missing bit of documentation about lighting layer blink

* Update docs/feature_rgblight.md per suggestions

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* Update docs/feature_rgblight.md per suggestions

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* Update docs/feature_rgblight.md per suggestions

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

* cformat, as suggested

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/quantum/rgblight.h b/quantum/rgblight.h
index b1585b158..e06073728 100644
--- a/quantum/rgblight.h
+++ b/quantum/rgblight.h
@@ -192,6 +192,12 @@ bool rgblight_get_layer_state(uint8_t layer);
 
 // Point this to an array of rgblight_segment_t arrays in keyboard_post_init_user to use rgblight layers
 extern const rgblight_segment_t *const *rgblight_layers;
+
+#        ifdef RGBLIGHT_LAYER_BLINK
+#            define RGBLIGHT_USE_TIMER
+void rgblight_blink_layer(uint8_t layer, uint16_t duration_ms);
+#        endif
+
 #    endif
 
 extern LED_TYPE led[RGBLED_NUM];