Add DWC2 deinit support

examples/dual/CMakeLists.txt

@@ -9,6 +9,7 @@ if (FAMILY STREQUAL "rp2040" AND NOT TARGET tinyusb_pico_pio_usb)
   message("Skipping dual host/device mode examples as Pico-PIO-USB is not available")
 else ()
   # family_add_subdirectory will filter what to actually add based on selected FAMILY
+  family_add_subdirectory(dynamic_switch)
   family_add_subdirectory(host_hid_to_device_cdc)
   family_add_subdirectory(host_info_to_device_cdc)
 endif ()

examples/dual/dynamic_switch/CMakeLists.txt

@@ -0,0 +1,33 @@
+cmake_minimum_required(VERSION 3.20)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
+
+# gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
+family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
+
+project(${PROJECT} C CXX ASM)
+
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
+
+# Espressif has its own cmake build system
+if(FAMILY STREQUAL "espressif")
+  return()
+endif()
+
+add_executable(${PROJECT})
+
+# Example source
+target_sources(${PROJECT} PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c
+  )
+
+# Example include
+target_include_directories(${PROJECT} PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/src
+  )
+
+# Configure compilation flags and libraries for the example without RTOS.
+# See the corresponding function in hw/bsp/FAMILY/family.cmake for details.
+family_configure_dual_usb_example(${PROJECT} noos)

examples/dual/dynamic_switch/CMakePresets.json

@@ -0,0 +1,6 @@
+{
+  "version": 6,
+  "include": [
+    "../../../hw/bsp/BoardPresets.json"
+  ]
+}

examples/dual/dynamic_switch/Makefile

@@ -0,0 +1,16 @@
+include ../../../hw/bsp/family_support.mk
+
+INC += \
+	src \
+
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(EXAMPLE_PATH)/, $(EXAMPLE_SOURCE))
+
+# Include device and host stack
+SRC_C += \
+	src/class/cdc/cdc_device.c \
+	src/host/hub.c \
+	src/host/usbh.c
+
+include ../../../hw/bsp/family_rules.mk

examples/dual/dynamic_switch/README.md

@@ -0,0 +1,60 @@
+# Dynamic Switch Example
+
+This example demonstrates TinyUSB's dual-role capability by allowing runtime switching between USB device and host modes.
+
+## Features
+
+- **Button-triggered mode switching**: Press the board button to switch between device and host modes
+- **Device Mode**: Acts as a USB CDC (Virtual Serial Port) that echoes all received data
+- **Host Mode**: Enumerates connected USB devices and prints device information
+- **Dynamic switching**: Deinitializes the current stack and reinitializes in the new mode
+
+## Usage
+
+1. **Build and flash** the example to your board
+2. **Default behavior**: The board starts in **Device mode**
+3. **Device mode**:
+   - Connect the board to a PC
+   - Open a serial terminal (e.g., `screen /dev/ttyACM0` or PuTTY)
+   - Type characters - they will be echoed back to you
+4. **Switch to Host mode**:
+   - Press the board button
+   - Connect a USB device to the board
+   - The board will enumerate the device and print its descriptors to the debug console
+5. **Switch back to Device mode**: Press the button again
+
+## LED Patterns
+
+The onboard LED indicates the USB connection status:
+
+- **Fast blink (250ms)**: Not mounted/connected
+- **Slow blink (1000ms)**: Successfully mounted/connected
+- **Very slow blink (2500ms)**: Suspended (device mode only)
+
+## Serial Output
+
+The example prints status messages to the debug UART:
+
+```
+======================================
+TinyUSB Dynamic Switch Example
+Press button to switch between device and host modes
+Starting in DEVICE mode...
+======================================
+
+[DEVICE] Mounted
+
+--- Switching USB mode ---
+Stopping DEVICE mode...
+Starting HOST mode...
+Mode switch complete!
+
+[HOST] Device attached, address = 1
+Device 1: ID 1234:5678 SN ABC123
+Device Descriptor:
+  bLength             18
+  bDescriptorType     1
+  bcdUSB              0200
+  bDeviceClass        239
+  ...
+```

examples/dual/dynamic_switch/only.txt

@@ -0,0 +1,7 @@
+family:espressif
+mcu:STM32F2
+mcu:STM32F4
+mcu:STM32U5
+mcu:STM32F7
+mcu:STM32H7
+mcu:STM32H7RS

examples/dual/dynamic_switch/skip.txt

@@ -0,0 +1 @@
+board:stm32u545nucleo

examples/dual/dynamic_switch/src/CMakeLists.txt

@@ -0,0 +1,4 @@
+# This file is for ESP-IDF only
+idf_component_register(SRCS "main.c" "usb_descriptors.c"
+                    INCLUDE_DIRS "."
+                    REQUIRES boards tinyusb_src)