112 lines
4.0 KiB
Markdown
112 lines
4.0 KiB
Markdown
# USB Stack
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USB Stack 是一个小而美的、可移植性高的、用于嵌入式 MCU 的 USB 主从协议栈。
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## USB 参考手册
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- USB2.0规格书: <https://www.usb.org/document-library/usb-20-specification>
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- CDC: <https://www.usb.org/document-library/class-definitions-communication-devices-12>
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- MSC: <https://www.usb.org/document-library/mass-storage-class-specification-overview-14>
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<https://www.usb.org/document-library/mass-storage-bulk-only-10>
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- HID: <https://www.usb.org/document-library/device-class-definition-hid-111>
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<https://www.usb.org/document-library/hid-usage-tables-122>
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- AUDIO: <https://www.usb.org/document-library/audiovideo-device-class-v10-spec-and-adopters-agreement>
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<https://www.usb.org/document-library/audio-data-formats-10>
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- VIDEO: <https://www.usb.org/document-library/video-class-v11-document-set>
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- TMC: <https://www.usb.org/document-library/test-measurement-class-specification>
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- DFU: <https://www.st.com/resource/zh/application_note/cd00264379-usb-dfu-protocol-used-in-the-stm32-bootloader-stmicroelectronics.pdf>
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## USB Stack 目录结构
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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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├── docs
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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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├── dw2
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├── fsdev
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├── mm32
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├── stm32
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└── template
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```
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| 目录名 | 描述 |
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|:-------------:|:------------------------------:|
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|class | usb class 类主从驱动 |
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|common | usb spec 定义和一些常用函数 |
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|core | usb 主从核心实现 |
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|demo | 示例 |
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|docs | 文档 |
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|packet capture | 抓包文件（需要使用力科软件打开）|
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|port | usb 主从需要实现的 porting接口 |
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## USB Device 协议栈简介
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USB Device 协议栈对标准设备请求、CLASS 请求、VENDOR 请求以及 custom 特殊请求规范了一套统一的函数框架，采用面向对象和链表的方式，能够使得用户快速上手复合设备，不用管底层的逻辑。同时，规范了一套标准的 dcd porting 接口，用于适配不同的 USB IP，达到面向 ip 编程。
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USB Device 协议栈的代码实现过程参考 <https://www.bilibili.com/video/BV1Ef4y1t73d> 。
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USB Device 协议栈当前实现以下功能：
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- 支持 USB2.0 全速和高速设备
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- 支持端点中断注册功能，porting 给用户自己处理中断里的数据
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- 支持复合设备
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- 支持 Communication Class (CDC)
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- 支持 Human Interface Device (HID)
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- 支持 Custom human Interface Device (HID)
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- 支持 Mass Storage Class (MSC)
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- 支持 USB VIDEO CLASS (UVC)
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- 支持 USB AUDIO CLASS (UAC)
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- 支持 Device Firmware Upgrade CLASS (DFU)
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- 支持 USB MIDI CLASS (MIDI)
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- 支持 Test and Measurement CLASS (TMC)
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- 支持 Vendor 类 class
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- 支持 WINUSB1.0、WINUSB2.0
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USB Device 协议栈资源占用说明：
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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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## USB Host 协议栈简介
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waiting....
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## USB Device API
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更详细的设备协议栈 API 请参考: [USB Device API](docs/usb_device.md)
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## USB Host API
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更详细的主机协议栈 API 请参考: [USB Host API](docs/usb_host.md)
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## RT-Thread 软件包使用
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如何在 RT-Thread OS 中使用软件包，请参考：[USB Stack 在 RT-Thread package 中的使用](docs/rt-thread_zh.md)
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