From 37c6e66584e7d43ecea9490c4b82b67b746374e6 Mon Sep 17 00:00:00 2001
From: Ashley Strahle <ash@jackofclubs.com.au>
Date: Wed, 24 Jun 2026 06:03:27 +0000
Subject: [PATCH] Add visual MIDI activity indicator (flashes pad 0 on any MIDI
 receive)

---
 src/app_task.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/app_task.cpp b/src/app_task.cpp
index 6b7acce..7434e95 100644
--- a/src/app_task.cpp
+++ b/src/app_task.cpp
@@ -43,6 +43,18 @@ void AppTask::update() {
 }
 
 void AppTask::process_midi_event(const MidiEvent& event) {
+    // Visual indicator: blink LED 0 on ANY MIDI receive
+    if (led_driver && event.type != MidiEvent::SYSTEM) {
+        static uint32_t last_blink = 0;
+        uint32_t now = millis();
+        if (now - last_blink > 100) {
+            last_blink = now;
+            led_driver->set_led_state(36, 1, 127); // Brief flash on pad 0
+            vTaskDelay(pdMS_TO_TICKS(10));
+            led_driver->set_led_state(36, 1, 0);
+        }
+    }
+    
     Serial.printf("[APP] MIDI IN: Type=%d Ch=%d Data1=%d Data2=%d\n",
                   event.type, event.channel, event.data1, event.data2);