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89 lines
4.3 KiB
Markdown
89 lines
4.3 KiB
Markdown
# TinyUSB
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[](https://travis-ci.org/hathach/tinyusb) [](https://opensource.org/licenses/MIT)
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TinyUSB is an open-source cross-platform USB Host/Device stack for embedded system. It is designed to be memory-safe with no dynamic allocation and thread-safe with all interrupt events are deferred then handled in the stack's task function.
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```
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.
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├── docs # Documentation
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├── examples # Sample with Makefile and Segger Embedded build support
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├── hw
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│ ├── bsp # Supported boards source files
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│ └── mcu # Low level mcu core & peripheral drivers
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├── lib # Sources from 3rd party such as freeRTOS, fatfs ...
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├── src # All sources files for TinyUSB stack itself.
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├── test # Unit tests for the stack
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└── tools # Files used internally
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```
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## Supported MCUs
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The stack supports the following MCUs
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- **Nordic:** nRF52840
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- **NXP:** LPC11Uxx, LPC13xx, LPC175x_6x, LPC177x_8x, LPC18xx, LPC40xx, LPC43xx, LPC51Uxx
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- **MicroChip:** SAMD21, SAMD51 (device only)
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- **ST:** STM32 series: L0, F0, F2, F3, F4, F7, H7 (device only)
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[Here is the list of supported Boards](docs/boards.md) that can be used with provided examples.
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## Device Stack
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Support multiple device configurations by dynamically changing usb descriptors. Low power functions such as suspend, resume and remote wakeup. Following device classes are supported:
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- Communication Class (CDC)
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- Human Interface Device (HID): Generic (In & Out), Keyboard, Mouse, Gamepad etc ...
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- Mass Storage Class (MSC): with multiple LUNs
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- Musical Instrument Digital Interface (MIDI)
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- 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.
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- [WebUSB](https://github.com/WICG/webusb) with vendor-specific class
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## Host Stack
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**Most active development is on the Device stack. The Host stack is under rework and largely untested.**
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- Human Interface Device (HID): Keyboard, Mouse, Generic
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- Mass Storage Class (MSC)
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- Hub currently only support 1 level of hub (due to my laziness)
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## OS Abtraction layer
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TinyUSB is completely thread-safe by pushing all ISR events into a central queue, then process it later in the non-ISR context. It also uses semphore/mutex to access shared resource such as CDC FIFO. Therefore the stack needs to use some of OS's basic APIs. Following OSes are already supported out of the box.
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- **No OS** : Disabling USB IRQ is used as way to provide mutex
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- **FreeRTOS**
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- **Mynewt** Due to the newt package build system, Mynewt examples are better to be on its [own repo](https://github.com/hathach/mynewt-tinyusb-example)
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## Compiler & IDE
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The stack is developed with GCC compiler, and should be compilable with others. Folder `examples` provide Makefile and Segger Embedded Studio build support. [Here is instruction to build example](examples/readme.md).
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## Getting Started
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[Here is the details for getting started](docs/getting_started.md) with the stack.
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## Porting
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Want to help add TinyUSB support for a new MCU? Read [here](docs/porting.md) for an explanation on the low-level API needed by TinyUSB.
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## License
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MIT license for all TinyUSB sources `src` folder, [Full license is here](LICENSE). However each file is 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.
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## Uses
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TinyUSB is currently used by these other projects:
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* [Adafruit nRF52 Arduino](https://github.com/adafruit/Adafruit_nRF52_Arduino)
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* [Adafruit nRF52 Bootloader](https://github.com/adafruit/Adafruit_nRF52_Bootloader)
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* [Adafruit SAMD Arduino](https://github.com/adafruit/ArduinoCore-samd)
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* [CircuitPython](https://github.com/adafruit/circuitpython)
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* [TinyUSB Arduino Library](https://github.com/adafruit/Adafruit_TinyUSB_Arduino)
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Let's me know if your project also uses TinyUSB and want to share.
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