force re-enumerate for all examples.

examples/CDC/cdc_multi/cdc_multi.ino

@@ -56,6 +56,13 @@ void setup() {
   // initialize 2nd CDC interface
   USBSer1.begin(115200);
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   while (!Serial || !USBSer1) {
     if (Serial) {
       Serial.println("Waiting for other USB ports");

examples/CDC/no_serial/no_serial.ino

@@ -31,6 +31,13 @@ void setup()
   // clear configuration will remove all USB interfaces including CDC (Serial)
   TinyUSBDevice.clearConfiguration();
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   pinMode(led, OUTPUT);
 }
 

examples/Composite/mouse_ramdisk/mouse_ramdisk.ino

@@ -74,6 +74,8 @@ void setup() {
     TinyUSBDevice.begin(0);
   }
 
+  Serial.begin(115200);
+
   // Set disk vendor id, product id and revision with string up to 8, 16, 4 characters respectively
   usb_msc.setID("Adafruit", "Mass Storage", "1.0");
 
@@ -97,7 +99,13 @@ void setup() {
   usb_hid.setPollInterval(2);
   usb_hid.begin();
 
-  Serial.begin(115200);
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   Serial.println("Adafruit TinyUSB Mouse + Mass Storage (ramdisk) example");
 }
 

examples/HID/hid_boot_keyboard/hid_boot_keyboard.ino

@@ -66,6 +66,13 @@ void setup() {
 
   usb_hid.begin();
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   // led pin
   pinMode(LED_BUILTIN, OUTPUT);
   digitalWrite(LED_BUILTIN, LOW);

examples/HID/hid_boot_mouse/hid_boot_mouse.ino

@@ -59,6 +59,8 @@ void setup() {
     TinyUSBDevice.begin(0);
   }
 
+  Serial.begin(115200);
+
   // Set up button, pullup opposite to active state
   pinMode(pin, activeState ? INPUT_PULLDOWN : INPUT_PULLUP);
 
@@ -67,10 +69,15 @@ void setup() {
   usb_hid.setPollInterval(2);
   usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
   usb_hid.setStringDescriptor("TinyUSB Mouse");
-
   usb_hid.begin();
 
-  Serial.begin(115200);
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   Serial.println("Adafruit TinyUSB HID Mouse example");
 }
 

examples/HID/hid_composite/hid_composite.ino

@@ -70,17 +70,24 @@ void setup() {
     TinyUSBDevice.begin(0);
   }
 
+  Serial.begin(115200);
+
   // Set up HID
   usb_hid.setPollInterval(2);
   usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
   usb_hid.setStringDescriptor("TinyUSB HID Composite");
-
   usb_hid.begin();
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   // Set up button, pullup opposite to active state
   pinMode(pin, activeState ? INPUT_PULLDOWN : INPUT_PULLUP);
 
-  Serial.begin(115200);
   Serial.println("Adafruit TinyUSB HID Composite example");
 }
 

examples/HID/hid_composite_joy_featherwing/hid_composite_joy_featherwing.ino

@@ -56,13 +56,20 @@ void setup() {
   if (!TinyUSBDevice.isInitialized()) {
     TinyUSBDevice.begin(0);
   }
+  Serial.begin(115200);
 
   // Notes: following commented-out functions has no affect on ESP32
   // usb_hid.setPollInterval(2);
   // usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
   usb_hid.begin();
 
-  Serial.begin(115200);
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   Serial.println("Adafruit TinyUSB HID Mouse with Joy FeatherWing example");
 
   if (!ss.begin(0x49)) {

examples/HID/hid_dual_interfaces/hid_dual_interfaces.ino

@@ -67,6 +67,8 @@ void setup() {
     TinyUSBDevice.begin(0);
   }
 
+  Serial.begin(115200);
+
   // HID Keyboard
   usb_keyboard.setPollInterval(2);
   usb_keyboard.setBootProtocol(HID_ITF_PROTOCOL_KEYBOARD);
@@ -81,10 +83,16 @@ void setup() {
   usb_mouse.setStringDescriptor("TinyUSB HID Keyboard");
   usb_mouse.begin();
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   // Set up button, pullup opposite to active state
   pinMode(pin, activeState ? INPUT_PULLDOWN : INPUT_PULLUP);
 
-  Serial.begin(115200);
   Serial.println("Adafruit TinyUSB HID Composite example");
 }
 

examples/HID/hid_gamepad/hid_gamepad.ino

@@ -47,6 +47,13 @@ void setup() {
   usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
   usb_hid.begin();
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   Serial.println("Adafruit TinyUSB HID Gamepad example");
 }
 

examples/HID/hid_generic_inout/hid_generic_inout.ino

@@ -53,16 +53,23 @@ void setup() {
     TinyUSBDevice.begin(0);
   }
 
+  Serial.begin(115200);
+
   // Notes: following commented-out functions has no affect on ESP32
   usb_hid.enableOutEndpoint(true);
   usb_hid.setPollInterval(2);
   usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
   usb_hid.setStringDescriptor("TinyUSB HID Generic");
-
   usb_hid.setReportCallback(get_report_callback, set_report_callback);
   usb_hid.begin();
 
-  Serial.begin(115200);
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   Serial.println("Adafruit TinyUSB HID Generic In Out example");
 }
 

examples/MIDI/midi_multi_ports/midi_multi_ports.ino

@@ -19,8 +19,7 @@
 // USB MIDI object with 3 ports
 Adafruit_USBD_MIDI usb_midi(3);
 
-void setup()
-{
+void setup() {
   pinMode(LED_BUILTIN, OUTPUT);
 
   // Manual begin() is required on core without built-in support e.g. mbed rp2040
@@ -32,12 +31,17 @@ void setup()
   usb_midi.setCableName(1, "Keyboard");
   usb_midi.setCableName(2, "Drum Pads");
   usb_midi.setCableName(3, "Lights");
-
   usb_midi.begin();
+
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
 }
 
-void loop()
-{
+void loop() {
   #ifdef TINYUSB_NEED_POLLING_TASK
   // Manual call tud_task since it isn't called by Core's background
   TinyUSBDevice.task();

examples/MIDI/midi_test/midi_test.ino

@@ -42,6 +42,8 @@ void setup() {
     TinyUSBDevice.begin(0);
   }
 
+  Serial.begin(115200);
+
   pinMode(LED_BUILTIN, OUTPUT);
 
   usb_midi.setStringDescriptor("TinyUSB MIDI");
@@ -50,14 +52,19 @@ void setup() {
   // This will also call usb_midi's begin()
   MIDI.begin(MIDI_CHANNEL_OMNI);
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   // Attach the handleNoteOn function to the MIDI Library. It will
   // be called whenever the Bluefruit receives MIDI Note On messages.
   MIDI.setHandleNoteOn(handleNoteOn);
 
   // Do the same for MIDI Note Off messages.
   MIDI.setHandleNoteOff(handleNoteOff);
-
-  Serial.begin(115200);
 }
 
 void loop() {

examples/MassStorage/msc_esp32_file_browser/msc_esp32_file_browser.ino

@@ -93,14 +93,19 @@ void setupMassStorage(void)
   // MSC is ready for read/write
   fs_changed = false;
   usb_msc.setReadyCallback(0, msc_ready_callback);
-
   usb_msc.begin();
 
+  // If already enumerated, additional class driverr begin() e.g msc, hid, midi won't take effect until re-enumeration
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+
   // Init file system on the flash
   fs_formatted = fatfs.begin(&flash);
 
-  if ( !fs_formatted )
-  {
+  if ( !fs_formatted ) {
     DBG_SERIAL.println("Failed to init files system, flash may not be formatted");
   }
 }