Fix USB MIDI enumeration: switch from ARDUINO_USB_MODE=1 to 0 (matches working Adafruit TinyUSB example), add explicit TinyUSBDevice.begin(0) and detach/attach re-enumeration, remove conflicting tusb_config.h

platformio.ini

@@ -7,12 +7,13 @@ board = esp32-s3-devkitc-1
 framework = arduino
 
 lib_deps =
-    adafruit/Adafruit TinyUSB Library@^2.0.0
+    adafruit/Adafruit TinyUSB Library@^3.1.0
     fastled/FastLED@^3.9.0
 
 build_flags =
-    -DARDUINO_USB_MODE=1
+    -DARDUINO_USB_MODE=0
     -DARDUINO_USB_CDC_ON_BOOT=1
+    -DUSE_TINYUSB=1
 
 monitor_speed = 115200
 

src/main.cpp

@@ -82,6 +82,12 @@ void handle_serial_command(const String& cmd) {
         mux.set_led_color(1, 255, 255, 255);
         mux.show();
         Serial.println("[CMD] Pixel 1 WHITE (max brightness)");
+    } else if (cmd == "usb") {
+        Serial.printf("[CMD] USB mounted: %s\n", TinyUSBDevice.mounted() ? "YES" : "NO");
+        Serial.printf("[CMD] USB VID:PID = 0x%04X:0x%04X\n", TinyUSBDevice.vid(), TinyUSBDevice.pid());
+        Serial.printf("[CMD] USB manufacturer: %s\n", TinyUSBDevice.manufacturerDescriptor());
+        Serial.printf("[CMD] USB product: %s\n", TinyUSBDevice.productDescriptor());
+        Serial.printf("[CMD] USB serial: %s\n", TinyUSBDevice.serialDescriptor());
     } else if (cmd == "gpiotest") {
         Serial.println("[CMD] === Raw GPIO Test ===");
         uint8_t pins[] = {9, 10, 11, 12};
@@ -122,6 +128,7 @@ void handle_serial_command(const String& cmd) {
         Serial.println("  read    - raw button read");
         Serial.println("  red/green/blue - solid colour");
         Serial.println("  pixel0/pixel1 - single pixel test");
+        Serial.println("  usb      - USB connection status and descriptor info");
         Serial.println("  gpiotest - raw GPIO pin diagnostic");
         Serial.println("  rawled   - bit-bang WS2812 (no library)");
         Serial.println("  anim     - re-run startup animation from loop");

src/midi_transport.cpp

@@ -13,15 +13,25 @@ UsbMidiTransport::~UsbMidiTransport() {
 bool UsbMidiTransport::begin() {
     Serial.println("[MIDI] Setting up USB MIDI device...");
 
+    if (!TinyUSBDevice.isInitialized()) {
+        TinyUSBDevice.begin(0);
+    }
+
     TinyUSBDevice.setManufacturerDescriptor("Ashley Strahle");
     TinyUSBDevice.setProductDescriptor("Loopy Foot Controller");
     TinyUSBDevice.setSerialDescriptor("LFMIDI001");
 
-    if (!usb_midi.begin(32)) {
+    if (!usb_midi.begin()) {
         Serial.println("[MIDI] ERROR: USB MIDI init failed");
         return false;
     }
 
+    if (TinyUSBDevice.mounted()) {
+        TinyUSBDevice.detach();
+        delay(10);
+        TinyUSBDevice.attach();
+    }
+
     initialized = true;
     Serial.println("[MIDI] USB MIDI ready - enumerating...");
     return true;

src/tusb_config.h

@@ -1,21 +0,0 @@
-#ifndef TUSB_CONFIG_H
-#define TUSB_CONFIG_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define CFG_TUD_MIDI 1
-#define CFG_TUD_MIDI_RX_BUFSIZE 64
-#define CFG_TUD_MIDI_TX_BUFSIZE 64
-
-#define CFG_TUD_CDC 0
-#define CFG_TUD_MSC 0
-#define CFG_TUD_HID 0
-#define CFG_TUD_NET 0
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif