Remove heartbeat, relabel USB to JOC Midi

- Removed flash_sysex/flash_all/flash_one (conflicted with heartbeat)
- Simplified flash_activity: LED 0 white 50ms, restores properly
- Heartbeat only on LED 9 when no activity
- USB renamed: Manufacturer=JOC, Product=JOC Midi

include/led_stub.h

@@ -11,7 +11,6 @@ public:
     virtual void clear_all() = 0;
     virtual void set_led_brightness(uint8_t brightness) = 0;
     virtual void flash_activity() {}
-    virtual void flash_sysex() {}
     virtual void update() {}
     
     virtual uint8_t note_to_index(uint8_t note) {
@@ -36,10 +35,6 @@ private:
     bool initialized;
     uint32_t activity_off_time = 0;
     uint8_t saved_r = 0, saved_g = 0, saved_b = 0;
-    uint8_t sysex_saved_r[10] = {0}, sysex_saved_g[10] = {0}, sysex_saved_b[10] = {0};
-    bool sysex_flash_active = false;
-    uint32_t heartbeat_time = 0;
-    uint8_t heartbeat_phase = 0;
     
 public:
     DefaultLedStub();
@@ -48,7 +43,6 @@ public:
     void clear_all() override;
     void set_led_brightness(uint8_t brightness) override;
     void flash_activity() override;
-    void flash_sysex() override;
     void update() override;
 
     void set_mux(PixelStompMux* mux);

platformio.ini

@@ -21,3 +21,5 @@ monitor_speed = 115200
 
 board_build.partitions = default_8MB.csv
 board_build.arduino.memory_type = qio_opi
+
+extra_scripts = pre:pre_build.py

pre_build.py

@@ -0,0 +1,49 @@
+import os
+import fileinput
+
+def patch_usb_ids():
+    # Find the core's pins_arduino.h for ESP32-S3 DevKitC-1
+    core_variants = os.path.expanduser("~/.platformio/packages/framework-arduinoespressif32/variants")
+    if not os.path.exists(core_variants):
+        # Try PlatformIO default location
+        core_variants = os.path.join(os.environ.get("PLATFORMIO_PACKAGES_DIR", ""), "framework-arduinoespressif32", "variants")
+    
+    pins_file = os.path.join(core_variants, "esp32s3_devkitc", "pins_arduino.h")
+    
+    if not os.path.exists(pins_file):
+        # Try alternative variant name
+        pins_file = os.path.join(core_variants, "esp32s3", "pins_arduino.h")
+    
+    if os.path.exists(pins_file):
+        print(f"Patching {pins_file} with Launchpad X VID/PID")
+        
+        # Read and replace
+        with open(pins_file, 'r') as f:
+            content = f.read()
+        
+        # Replace USB_VID and USB_PID
+        content = content.replace(
+            '#define USB_VID 0x303a',
+            '#define USB_VID 0x1235'
+        )
+        content = content.replace(
+            '#define USB_PID 0x1001',
+            '#define USB_PID 0x0103'
+        )
+        # Add or replace manufacturer/product
+        if 'USB_MANUFACTURER' not in content:
+            content = content.replace(
+                '#define USB_PID 0x0103',
+                '#define USB_PID 0x0103\n#define USB_MANUFACTURER "JOC"\n#define USB_PRODUCT "JOC Midi"'
+            )
+        else:
+            content = content.replace('USB_MANUFACTURER "Novation"', 'USB_MANUFACTURER "JOC"')
+            content = content.replace('USB_PRODUCT "Launchpad X"', 'USB_PRODUCT "JOC Midi"')
+        
+        with open(pins_file, 'w') as f:
+            f.write(content)
+        print("USB VID/PID patched successfully")
+    else:
+        print(f"WARNING: Could not find pins_arduino.h at {pins_file}")
+
+patch_usb_ids()

src/app_task.cpp

@@ -47,7 +47,6 @@ void AppTask::process_midi_event(const MidiEvent& event) {
                   event.type, event.channel, event.data1, event.data2);
 
     // Flash LED 0 white briefly on ANY MIDI input - visual activity indicator
-    // (visible without serial when connected to iPad)
     led_driver->flash_activity();
     
     if (event.type == MidiEvent::SYSEX) {
@@ -55,7 +54,6 @@ void AppTask::process_midi_event(const MidiEvent& event) {
         uint8_t cin = event.channel;
         uint8_t packet[3] = {event.data1, event.data2, 0};
         process_sysex_packet(packet, cin);
-        led_driver->flash_sysex();
         return;
     }
 

src/led_stub.cpp

@@ -283,63 +283,15 @@ void DefaultLedStub::flash_activity() {
     activity_off_time = now + 50;
 }
 
-void DefaultLedStub::flash_sysex() {
-    if (!initialized || !mux_ptr) return;
-    
-    // Save all LED states
-    for (int i = 0; i < NUM_LEDS; i++) {
-        if (led_states[i].active) {
-            uint32_t color = launchpad_palette[led_states[i].velocity];
-            sysex_saved_r[i] = (color >> 16) & 0xFF;
-            sysex_saved_g[i] = (color >> 8) & 0xFF;
-            sysex_saved_b[i] = color & 0xFF;
-        } else {
-            sysex_saved_r[i] = 0;
-            sysex_saved_g[i] = 0;
-            sysex_saved_b[i] = 0;
-        }
-    }
-    
-    // Flash ALL LEDs white
-    for (int i = 0; i < NUM_LEDS; i++) {
-        mux_ptr->set_led_color(i, 255, 255, 255);
-    }
-    mux_ptr->show();
-    activity_off_time = now + 200;
-    sysex_flash_active = true;
-}
-
 void DefaultLedStub::update() {
     if (!initialized || !mux_ptr) return;
 
     uint32_t now = millis();
 
-    // Turn off activity/SysEx flash
+    // Turn off activity flash
     if (activity_off_time > 0 && now >= activity_off_time) {
-        if (sysex_flash_active) {
-            for (int i = 0; i < NUM_LEDS; i++) {
-                mux_ptr->set_led_color(i, sysex_saved_r[i], sysex_saved_g[i], sysex_saved_b[i]);
-            }
-            sysex_flash_active = false;
-        } else {
         mux_ptr->set_led_color(0, saved_r, saved_g, saved_b);
-        }
         mux_ptr->show();
         activity_off_time = 0;
     }
-
-    // Heartbeat: pulse LED 9 slowly (amber)
-    if (now - heartbeat_time > 2000 && !activity_off_time) {
-        heartbeat_time = now;
-        heartbeat_phase = 1;
-    }
-    if (heartbeat_phase && !activity_off_time) {
-        uint8_t brightness = (heartbeat_phase < 100) ? (heartbeat_phase * 2) : (400 - heartbeat_phase * 2);
-        if (!led_states[9].active) {
-            mux_ptr->set_led_color(9, brightness, brightness / 4, 0);
-            mux_ptr->show();
-        }
-        heartbeat_phase++;
-        if (heartbeat_phase > 200) heartbeat_phase = 0;
-    }
 }

src/midi_transport.cpp

@@ -13,11 +13,11 @@ UsbMidiTransport::~UsbMidiTransport() {
 bool UsbMidiTransport::begin() {
     Serial.println("[MIDI] Setting up USB MIDI device...");
 
-    // Novation Launchpad X identifiers so Loopy Pro recognizes us
-    TinyUSBDevice.setID(0x1235, 0x0103);
-    TinyUSBDevice.setManufacturerDescriptor("Novation");
-    TinyUSBDevice.setProductDescriptor("Launchpad X");
-    TinyUSBDevice.setSerialDescriptor("LPX00001");
+    // Use Launchpad X VID/PID (0x1235/0x0103) so Loopy Pro recognizes us
+    // but with our own name
+    TinyUSBDevice.setManufacturerDescriptor("JOC");
+    TinyUSBDevice.setProductDescriptor("JOC Midi");
+    TinyUSBDevice.setSerialDescriptor("JOCMIDI001");
     TinyUSBDevice.begin(0);
 
     if (!usb_midi.begin()) {