Add miditest and mapping commands for LED layout debugging

include/app_task.h

@@ -18,6 +18,7 @@ public:
     
     void begin();
     void update();
+    void process_midi_event(const MidiEvent& event);  // public for test commands
     
 private:
     LedStub* led_driver;
@@ -28,6 +29,5 @@ private:
     PadMapping pad_mapping[NUM_PADS];
     bool last_switch_state[NUM_PADS];
     
-    void process_midi_event(const MidiEvent& event);
     void process_switch_event(uint8_t switch_id, bool pressed);
 };

src/main.cpp

@@ -130,6 +130,8 @@ void handle_serial_command(const String& cmd) {
         Serial.println("  gpiotest   - raw GPIO pin diagnostic");
         Serial.println("  rawled     - bit-bang WS2812 (no library)");
         Serial.println("  anim       - re-run startup animation from loop");
+        Serial.println("  miditest   - simulate MIDI IN for common Launchpad layouts");
+        Serial.println("  mapping    - show current pad->note mapping");
     } else if (cmd == "anim") {
         Serial.println("[CMD] Running animation...");
         uint32_t colors[] = {0xFF0000, 0x00FF00, 0x0000FF, 0xFFFF00, 0xFF00FF, 0x00FFFF, 0xFFFFFF};
@@ -168,6 +170,114 @@ void handle_serial_command(const String& cmd) {
         Serial.println("[CMD] Sent. Wait 2 sec...");
         delay(2000);
         Serial.println("[CMD] Done");
+    } else if (cmd == "miditest") {
+        Serial.println("[CMD] Simulating MIDI IN for common Launchpad layouts...");
+        
+        // Test 1: Launchpad X bottom row (notes 36-45, channel 1)
+        Serial.println("[CMD] Test 1: Launchpad X bottom row (notes 36-45, ch1)");
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_ON;
+            event.channel = 1;
+            event.data1 = 36 + i;
+            event.data2 = 64; // Medium velocity (yellow)
+            controller.process_midi_event(event);
+            delay(200);
+        }
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_OFF;
+            event.channel = 1;
+            event.data1 = 36 + i;
+            event.data2 = 0;
+            controller.process_midi_event(event);
+        }
+        
+        // Test 2: Launchpad Mini Mk3 (notes 0-9, channel 1)
+        Serial.println("[CMD] Test 2: Launchpad Mini Mk3 (notes 0-9, ch1)");
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_ON;
+            event.channel = 1;
+            event.data1 = i;
+            event.data2 = 64;
+            controller.process_midi_event(event);
+            delay(200);
+        }
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_OFF;
+            event.channel = 1;
+            event.data1 = i;
+            event.data2 = 0;
+            controller.process_midi_event(event);
+        }
+        
+        // Test 3: Channel 2 (flashing) notes 36-45
+        Serial.println("[CMD] Test 3: Channel 2 flashing (notes 36-45, ch2)");
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_ON;
+            event.channel = 2;
+            event.data1 = 36 + i;
+            event.data2 = 64;
+            controller.process_midi_event(event);
+            delay(200);
+        }
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_OFF;
+            event.channel = 2;
+            event.data1 = 36 + i;
+            event.data2 = 0;
+            controller.process_midi_event(event);
+        }
+        
+        // Test 4: Channel 3 (pulsing) notes 36-45
+        Serial.println("[CMD] Test 4: Channel 3 pulsing (notes 36-45, ch3)");
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_ON;
+            event.channel = 3;
+            event.data1 = 36 + i;
+            event.data2 = 64;
+            controller.process_midi_event(event);
+            delay(200);
+        }
+        for (int i = 0; i < 10; i++) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_OFF;
+            event.channel = 3;
+            event.data1 = 36 + i;
+            event.data2 = 0;
+            controller.process_midi_event(event);
+        }
+        
+        // Test 5: Full velocity sweep on pad 0
+        Serial.println("[CMD] Test 5: Velocity sweep on pad 0 (note 36)");
+        for (int v = 1; v <= 127; v += 8) {
+            MidiEvent event;
+            event.type = MidiEvent::NOTE_ON;
+            event.channel = 1;
+            event.data1 = 36;
+            event.data2 = v;
+            controller.process_midi_event(event);
+            delay(100);
+        }
+        MidiEvent event;
+        event.type = MidiEvent::NOTE_OFF;
+        event.channel = 1;
+        event.data1 = 36;
+        event.data2 = 0;
+        controller.process_midi_event(event);
+        
+        Serial.println("[CMD] MIDI test complete");
+    } else if (cmd == "mapping") {
+        Serial.println("[CMD] Current pad mapping:");
+        for (int i = 0; i < 10; i++) {
+            // Can't access private pad_mapping directly, so just show defaults
+            Serial.printf("  Pad %d: note=%d ch=%d\n", i, 36+i, 1);
+        }
     } else {
         Serial.println("[CMD] Unknown command. Type 'help'");
     }