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<li class="toctree-l1"><a class="reference internal" href="quick_start/start.html">入门必看</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/demo.html">基于现有 demo 快速验证</a></li>
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<li class="toctree-l1"><a class="reference internal" href="quick_start/opensource.html">基于 CherryUSB 的开源项目</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/usb_speed.html">USB 极限速度测试</a></li>
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<p class="caption" role="heading"><span class="caption-text">USB 基本知识点</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="usb/usb2.0_basic.html">USB 基本概念(2.0 为主)</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb3.0_basic.html">USB 基本概念(3.0 为主)</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_desc.html">USB 描述符</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_request.html">USB 设备请求</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_enum.html">USB 枚举</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_ext.html">USB 知识点拓展</a></li>
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<p class="caption" role="heading"><span class="caption-text">API 手册</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="api/api_device.html">设备协议栈</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/api_host.html">主机协议栈</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/api_port.html">主从驱动</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/api_config.html">USB CONFIG 说明</a></li>
</ul>
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<li class="toctree-l1"><a class="reference internal" href="class/class_cdc.html">CDC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_hid.html">HID</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_msc.html">MSC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_audio.html">UAC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_video.html">UVC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/winusb.html">WINUSB</a></li>
</ul>
<p class="caption" role="heading"><span class="caption-text">例程</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_cdc_acm.html">CDC ACM Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_hid.html">HID Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_msc.html">MSC Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_audiov1.html">AudioV1 Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_audiov2.html">AudioV2 Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_video.html">USB Video Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_winusb.html">WinUSB Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_webusb.html">WebUSB Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_rndis.html">CDC RNDIS Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_ecm.html">CDC ECM Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_adb.html">ADB Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_mtp.html">MTP Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_serial.html">Serial Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_hid.html">HID Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_msc.html">MSC Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_net.html">Network Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_bluetooth.html">BTBLE Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_wifi.html">WIFI Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_audio.html">Audio Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_video.html">Video Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usb_otg.html">USB OTG</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_vendor.html">Vendor Device 驱动编写</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_vendor.html">Vendor Host 驱动编写</a></li>
</ul>
<p class="caption" role="heading"><span class="caption-text">USBIP 介绍</span></p>
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<li class="toctree-l1"><a class="reference internal" href="usbip/ohci.html">OHCI</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/ehci.html">EHCI</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/xhci.html">XHCI</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/chipidea.html">CHIPIDEA</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/dwc2.html">DWC2</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/musb.html">MUSB</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/fotg210.html">FOTG210</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/cdns2.html">CDNS2</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/cdns3.html">CDNS3</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/dwc3.html">DWC3</a></li>
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<p class="caption" role="heading"><span class="caption-text">工具使用</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html">chryusb_configurator</a></li>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html#usb-protocol-suite">力科 USB Protocol Suite</a></li>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html#wireshark">Wireshark</a></li>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html#audacity">Audacity</a></li>
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<p class="caption" role="heading"><span class="caption-text">Release Notes</span></p>
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<li class="toctree-l1"><a class="reference internal" href="version.html">版本说明</a></li>
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<li class="toctree-l1"><a class="reference internal" href="show/index.html">性能展示</a></li>
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<section id="cherryusb">
<h1>CherryUSB 使用指南<a class="headerlink" href="#cherryusb" title="Link to this heading"></a></h1>
<p>CherryUSB 是一个小而美的、可移植性高的、用于嵌入式系统的 USB 主从协议栈。同时 CherryUSB 具有以下优点：</p>
<p><strong>易于学习 USB</strong></p>
<p>为了方便用户学习 USB 基本知识、枚举、驱动加载、IP 驱动，因此，编写的代码具备以下优点：</p>
<ul class="simple">
<li><p>代码精简，逻辑简单，无复杂 C 语言语法</p></li>
<li><p>树状化编程，代码层层递进</p></li>
<li><p>Class 驱动和 porting 驱动模板化、精简化</p></li>
<li><p>API 分类清晰（从机：初始化、注册类、命令回调类、数据收发类；主机：初始化、查找类、数据收发类）</p></li>
</ul>
<p><strong>易于使用 USB</strong></p>
<p>为了方便用户使用 USB 接口，考虑到用户学习过 uart 和 dma，因此，设计的数据收发类接口具备以下优点：</p>
<ul class="simple">
<li><p>等价于使用 uart tx dma/uart rx dma</p></li>
<li><p>收发长度没有限制，用户不需要关心 USB 分包过程（porting 驱动做分包过程）</p></li>
</ul>
<p><strong>易于发挥 USB 性能</strong></p>
<p>考虑到 USB 性能问题，尽量达到 USB 硬件理论带宽，因此，设计的数据收发类接口具备以下优点：</p>
<ul class="simple">
<li><p>Porting 驱动直接对接寄存器，无抽象层封装</p></li>
<li><p>Memory zero copy</p></li>
<li><p>IP 如果带 DMA 则使用 DMA 模式（DMA 带硬件分包功能）</p></li>
<li><p>长度无限制，方便对接硬件 DMA 并且发挥 DMA 的优势</p></li>
<li><p>分包功能在中断中处理</p></li>
</ul>
<p><strong>从机协议栈整体执行流程</strong></p>
<figure class="align-default">
<img alt="_images/usbdev.svg" src="_images/usbdev.svg" />
</figure>
<p><strong>主机协议栈整体执行流程</strong></p>
<figure class="align-default">
<img alt="_images/usbhost.svg" src="_images/usbhost.svg" />
</figure>
<p><strong>其他相关链接</strong></p>
<ul class="simple">
<li><p><strong>视频教程</strong>： <a class="reference external" href="https://www.bilibili.com/cheese/play/ss707687201">https://www.bilibili.com/cheese/play/ss707687201</a></p></li>
<li><p><strong>github</strong> ： <a class="reference external" href="https://github.com/sakumisu/CherryUSB">https://github.com/sakumisu/CherryUSB</a></p></li>
<li><p><strong>CherryUSB原理性分析和应用实践-汉斯期刊</strong>： <a class="reference external" href="https://www.hanspub.org/journal/paperinformation?paperid=126903">https://www.hanspub.org/journal/paperinformation?paperid=126903</a></p></li>
</ul>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">快速上手</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="quick_start/start.html">入门必看</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/demo.html">基于现有 demo 快速验证</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/transplant.html">芯片通用移植指南</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/rtthread.html">基于 RT-Thread 软件包开发指南</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/q%26a.html">Q & A</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/migration.html">部分改动迁移指南</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/opensource.html">基于 CherryUSB 的开源项目</a></li>
<li class="toctree-l1"><a class="reference internal" href="quick_start/usb_speed.html">USB 极限速度测试</a></li>
</ul>
</div>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">USB 基本知识点</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="usb/usb2.0_basic.html">USB 基本概念(2.0 为主)</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb3.0_basic.html">USB 基本概念(3.0 为主)</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_desc.html">USB 描述符</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_request.html">USB 设备请求</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_enum.html">USB 枚举</a></li>
<li class="toctree-l1"><a class="reference internal" href="usb/usb_ext.html">USB 知识点拓展</a></li>
</ul>
</div>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">API 手册</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="api/api_device.html">设备协议栈</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/api_host.html">主机协议栈</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/api_port.html">主从驱动</a></li>
<li class="toctree-l1"><a class="reference internal" href="api/api_config.html">USB CONFIG 说明</a></li>
</ul>
</div>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Class 指南</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="class/class_cdc.html">CDC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_hid.html">HID</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_msc.html">MSC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_audio.html">UAC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/class_video.html">UVC</a></li>
<li class="toctree-l1"><a class="reference internal" href="class/winusb.html">WINUSB</a></li>
</ul>
</div>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">例程</span></p>
<ul>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_cdc_acm.html">CDC ACM Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_hid.html">HID Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_msc.html">MSC Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_audiov1.html">AudioV1 Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_audiov2.html">AudioV2 Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_video.html">USB Video Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_winusb.html">WinUSB Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_webusb.html">WebUSB Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_rndis.html">CDC RNDIS Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_ecm.html">CDC ECM Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_adb.html">ADB Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_mtp.html">MTP Device</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_serial.html">Serial Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_hid.html">HID Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_msc.html">MSC Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_net.html">Network Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_bluetooth.html">BTBLE Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_wifi.html">WIFI Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_audio.html">Audio Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_video.html">Video Host</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usb_otg.html">USB OTG</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbd_vendor.html">Vendor Device 驱动编写</a></li>
<li class="toctree-l1"><a class="reference internal" href="demo/usbh_vendor.html">Vendor Host 驱动编写</a></li>
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<li class="toctree-l1"><a class="reference internal" href="usbip/ohci.html">OHCI</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/ehci.html">EHCI</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/xhci.html">XHCI</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/chipidea.html">CHIPIDEA</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/dwc2.html">DWC2</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/musb.html">MUSB</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/fotg210.html">FOTG210</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/cdns2.html">CDNS2</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/cdns3.html">CDNS3</a></li>
<li class="toctree-l1"><a class="reference internal" href="usbip/dwc3.html">DWC3</a></li>
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<li class="toctree-l1"><a class="reference internal" href="tools/index.html">chryusb_configurator</a></li>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html#usb-protocol-suite">力科 USB Protocol Suite</a></li>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html#wireshark">Wireshark</a></li>
<li class="toctree-l1"><a class="reference internal" href="tools/index.html#audacity">Audacity</a></li>
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<li class="toctree-l1"><a class="reference internal" href="version.html">版本说明</a></li>
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