117 lines
4.5 KiB
Markdown
117 lines
4.5 KiB
Markdown
# CherryUSB
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[中文版](./README_zh.md)
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CherryUSB is a tiny, beautiful and portable USB host and device stack for embedded system.
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## CherryUSB Directoy Structure
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```
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.
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├── class
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│ ├── audio
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│ ├── cdc
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│ ├── dfu
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│ ├── hid
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│ ├── hub
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│ ├── midi
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│ ├── msc
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│ ├── tmc
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│ └── video
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├── common
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├── core
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├── demo
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│ ├── bouffalolab
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│ └── stm32
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│ └── mm32
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│ └── ch32
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├── docs
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├── osal
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├── packet capture
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└── port
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├── bouffalolab
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│ └── bl702
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├── ch32
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├── ehci
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├── fsdev
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├── mm32
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├── synopsys
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├── musb
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└── template
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```
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| Directory | Description |
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|:-------------:|:---------------------------:|
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|class | usb class driver |
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|common | usb spec macros and utils |
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|core | usb core implementation |
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|demo | different chip demo |
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|osal | os wrapper |
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|docs | doc for guiding |
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|packet capture | packet capture file |
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|port | usb dcd and hcd porting |
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## CherryUSB Device Stack Overview
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CherryUSB Device Stack provides a unified framework of functions for standard device requests, CLASS requests, VENDOR requests and custom special requests. The object-oriented and chained approach allows the user to quickly get started with composite devices without having to worry about the underlying logic. At the same time, a standard dcd porting interface has been standardised for adapting different USB IPs to achieve ip-oriented programming.
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How CherryUSB Device Stack is implemented, this video will tell you: <https://www.bilibili.com/video/BV1Ef4y1t73d> .
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CherryUSB Device Stack has the following functions：
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- Support USB2.0 full and high speed
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- Support endpoint irq callback register by users, let users do whatever they wants in endpoint irq callback.
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- Support Compound and Composite Device
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- Support Communication Device Class (CDC)
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- Support Human Interface Device (HID)
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- Support Custom human Interface Device (HID)
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- Support Mass Storage Class (MSC)
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- Support USB VIDEO CLASS (UVC)
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- Support USB AUDIO CLASS (UAC)
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- Support Device Firmware Upgrade CLASS (DFU)
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- Support USB MIDI CLASS (MIDI)
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- Support Test and Measurement CLASS (TMC)
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- Support Vendor class
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- Support WINUSB1.0、WINUSB2.0
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CherryUSB Device Stack resource usage：
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| file | FLASH (Byte) | RAM (Byte) |
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|:-----------:|:--------------:|:------------:|
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|usbd_core.c | 3045 | 373 |
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|usbd_cdc.c | 302 | 20 |
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|usbd_msc.c | 2452 | 132 |
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|usbd_hid.c | 784 | 201 |
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|usbd_audio.c | 438 | 14 |
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|usbd_video.c | 402 | 4 |
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## CherryUSB Host Stack Overview
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The CherryUSB Host Stack has a standard enumeration implementation for devices mounted on roothubs and external hubs, and a standard interface for the different Class to indicate what the Class driver needs to do after enumeration and after disconnection. A standard hcd porting interface has also been standardised for adapting different USB IPs for IP-oriented programming. Finally, the protocol stack is managed using os, and provides osal to make a adaptation to different os.
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How CherryUSB Host Stack is implemented, the video will be provided in future.
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CherryUSB Host Stack has the following functions：
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- Automatic loading of supported Class drivers
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- Support blocking transfers and asynchronous transfers
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- Support Compound and Composite Device
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- Multi-level HUB support, expandable up to 7 levels
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- Support Communication Device Class (CDC)
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- Support Human Interface Device (HID)
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- Support Mass Storage Class (MSC)
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- Support Vendor class
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- Support Andriod AOA Communication
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The CherryUSB Host stack also provides the lsusb function, which allows you to view information about all mounted devices, including those on external hubs, with the help of a shell plugin.
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## CherryUSB Documentation Tutorial
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Quickly start, API manual,and Class knowledge and examples, see [CherryUSB Documentation Tutorial](https://htmlpreview.github.io/?https://raw.githubusercontent.com/sakumisu/CherryUSB/master/docs/_build/html/index.html)
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## CherryUSB Video Tutorial
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USB basic concepts and how the CherryUSB Device protocol stack is implemented, see [CherryUSB Device Protocol Stack Tutorial](https://www.bilibili.com/video/BV1Ef4y1t73d).
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