From 67cb93e643718066ec9074e411def110f8912d4b Mon Sep 17 00:00:00 2001
From: pelgraine <140762863+pelgraine@users.noreply.github.com>
Date: Tue, 17 Feb 2026 19:52:44 +1100
Subject: [PATCH] update uittasks to enable keyboard pulse light notification

---
 examples/companion_radio/ui-new/UITask.cpp | 22 ++++++++++++++++++++++
 examples/companion_radio/ui-new/UITask.h   |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/examples/companion_radio/ui-new/UITask.cpp b/examples/companion_radio/ui-new/UITask.cpp
index 8539a7f1..44809123 100644
--- a/examples/companion_radio/ui-new/UITask.cpp
+++ b/examples/companion_radio/ui-new/UITask.cpp
@@ -825,6 +825,12 @@ void UITask::begin(DisplayDriver* display, SensorManager* sensors, NodePrefs* no
   vibration.begin();
 #endif
 
+  // Keyboard backlight for message flash notifications
+#ifdef KB_BL_PIN
+  pinMode(KB_BL_PIN, OUTPUT);
+  digitalWrite(KB_BL_PIN, LOW);
+#endif
+
   ui_started_at = millis();
   _alert_expiry = 0;
 
@@ -925,6 +931,14 @@ void UITask::newMsg(uint8_t path_len, const char* from_name, const char* text, i
     _next_refresh = 100;  // trigger refresh
     }
   }
+
+  // Keyboard flash notification
+#ifdef KB_BL_PIN
+  if (_node_prefs->kb_flash_notify) {
+    digitalWrite(KB_BL_PIN, HIGH);
+    _kb_flash_off_at = millis() + 200;  // 200ms flash
+  }
+#endif
 }
 
 void UITask::userLedHandler() {
@@ -1060,6 +1074,14 @@ void UITask::loop() {
 
   userLedHandler();
 
+  // Turn off keyboard flash after timeout
+#ifdef KB_BL_PIN
+  if (_kb_flash_off_at && millis() >= _kb_flash_off_at) {
+    digitalWrite(KB_BL_PIN, LOW);
+    _kb_flash_off_at = 0;
+  }
+#endif
+
 #ifdef PIN_BUZZER
   if (buzzer.isPlaying())  buzzer.loop();
 #endif
diff --git a/examples/companion_radio/ui-new/UITask.h b/examples/companion_radio/ui-new/UITask.h
index d12b140b..372d06aa 100644
--- a/examples/companion_radio/ui-new/UITask.h
+++ b/examples/companion_radio/ui-new/UITask.h
@@ -32,6 +32,7 @@ class UITask : public AbstractUITask {
   GenericVibration vibration;
 #endif
   unsigned long _next_refresh, _auto_off;
+  unsigned long _kb_flash_off_at;          // Keyboard flash turn-off timer
   NodePrefs* _node_prefs;
   char _alert[80];
   unsigned long _alert_expiry;
@@ -74,6 +75,7 @@ public:
 
   UITask(mesh::MainBoard* board, BaseSerialInterface* serial) : AbstractUITask(board, serial), _display(NULL), _sensors(NULL) {
     next_batt_chck = _next_refresh = 0;
+    _kb_flash_off_at = 0;
     ui_started_at = 0;
     curr = NULL;
   }