Reference¶
.
├── docs # Documentation
├── examples # Examples with make and cmake build system
├── hw
│ ├── bsp # Supported boards source files
│ └── mcu # Low level mcu core & peripheral drivers
├── lib # Sources from 3rd party such as freeRTOS, fatfs ...
├── src # All sources files for TinyUSB stack itself.
├── test # Tests: unit test, fuzzing, hardware test
└── tools # Files used internally
Device Stack¶
Supports multiple device configurations by dynamically changing USB descriptors, low power functions such like suspend, resume, and remote wakeup. The following device classes are supported:
Audio Class 2.0 (UAC2)
Bluetooth Host Controller Interface (BTH HCI)
Communication Device Class (CDC)
Device Firmware Update (DFU): DFU mode (WIP) and Runtime
Human Interface Device (HID): Generic (In & Out), Keyboard, Mouse, Gamepad etc …
Mass Storage Class (MSC): with multiple LUNs
Musical Instrument Digital Interface (MIDI)
Network with RNDIS, Ethernet Control Model (ECM), Network Control Model (NCM)
Test and Measurement Class (USBTMC)
Video class 1.5 (UVC): work in progress
Vendor-specific class support with generic In & Out endpoints. Can be used with MS OS 2.0 compatible descriptor to load winUSB driver without INF file.
WebUSB with vendor-specific class
If you have a special requirement, usbd_app_driver_get_cb() can be used to write your own class driver without modifying the stack. Here is how the RPi team added their reset interface raspberrypi/pico-sdk#197
Host Stack¶
Human Interface Device (HID): Keyboard, Mouse, Generic
Mass Storage Class (MSC)
Communication Device Class: CDC-ACM
Vendor serial over USB: FTDI, CP210x
Hub with multiple-level support
Similar to the Device Stack, if you have a special requirement, usbh_app_driver_get_cb() can be used to write your own class driver without modifying the stack.
TypeC PD Stack¶
Power Delivery 3.0 (PD3.0) with USB Type-C support (WIP)
Super early stage, only for testing purpose
Only support STM32 G4
OS Abstraction layer¶
TinyUSB is completely thread-safe by pushing all Interrupt Service Request (ISR) events into a central queue, then processing them later in the non-ISR context task function. It also uses semaphore/mutex to access shared resources such as Communication Device Class (CDC) FIFO. Therefore the stack needs to use some of the OS’s basic APIs. Following OSes are already supported out of the box.
License¶
All TinyUSB sources in the src folder are licensed under MIT license. However, each file can be individually licensed especially those in lib and hw/mcu folder. Please make sure you understand all the license term for files you use in your project.