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<title>Q & A — CherryUSB 1.5.3 documentation</title>
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- <link rel="prev" title="基于 ESP-Registry 开发指南" href="quick_start/esp.html" />
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+ <script src="../_static/doctools.js?v=9a2dae69"></script>
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+ <link rel="index" title="Index" href="../genindex.html" />
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+ <link rel="search" title="Search" href="../search.html" />
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+ <link rel="next" title="开发者经验/开源项目分享" href="share.html" />
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+ <link rel="prev" title="基于 RT-Thread 软件包开发指南" href="rtthread.html" />
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- <a href="index.html" class="icon icon-home">
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+ <a href="../index.html" class="icon icon-home">
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CherryUSB
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</a>
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<div role="search">
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- <form id="rtd-search-form" class="wy-form" action="search.html" method="get">
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+ <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
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<input type="text" name="q" placeholder="Search docs" aria-label="Search docs" />
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</div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
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<p class="caption" role="heading"><span class="caption-text">快速上手</span></p>
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<ul class="current">
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-<li class="toctree-l1"><a class="reference internal" href="quick_start/start.html">入门必看</a></li>
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-<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/transplant.html">芯片通用移植指南</a></li>
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-<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>
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-<li class="toctree-l1"><a class="reference internal" href="quick_start/esp.html">基于 ESP-Registry 开发指南</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="start.html">入门必看</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="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="transplant.html">芯片通用移植指南</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="rtthread.html">基于 RT-Thread 软件包开发指南</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">Q & A</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="#id1">移植提问模板</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#id2">其余问题提问模板</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#cherryusb">CherryUSB 性能能到多少</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#st-ip">ST IP 命名问题</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#gd-ip">GD IP 问题</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="#usb-log-dbg">开启 USB_LOG_DBG 后无法枚举</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="#usb3-cv">USB3 CV测试用哪个版本</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="#ep-addr-xxx-fifo-overflow">Ep addr XXX fifo overflow</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#ep-addr-xxx-overflow">Ep addr XXX overflow</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#this-dwc2-version-does-not-support-dma-mode-so-stop-working">This dwc2 version does not support dma mode, so stop working</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="#otg">OTG 有哪些芯片支持</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="#pc-com">PC 识别的 COM 口如何更改名称</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="#connect-disconnect-event">connect 和 disconnect event 不触发</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#has-include">__has_include 报错</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#config-usb-hs">CONFIG_USB_HS 何时使用</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#failed-to-enable-port">Failed to enable port</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#usb-host-urb-12-14">移植 usb host 出现 urb 返回 -12/-14</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#usb-err-nak">USB_ERR_NAK 说明</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#usb-host-usb">USB host 连接 USB 网卡问题</a></li>
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-<li class="toctree-l2"><a class="reference internal" href="#pc-com">PC 识别的 COM 口如何更改名称</a></li>
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-<li class="toctree-l2"><a class="reference internal" href="#connect-disconnect-event">connect 和 disconnect event 不触发</a></li>
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</ul>
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</li>
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-<li class="toctree-l1"><a class="reference internal" href="opensource.html">官方开源项目分享</a></li>
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<li class="toctree-l1"><a class="reference internal" href="share.html">开发者经验/开源项目分享</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="opensource.html">官方开源项目分享</a></li>
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</ul>
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<p class="caption" role="heading"><span class="caption-text">USB 基本知识点</span></p>
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<ul>
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-<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>
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-<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>
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-<li class="toctree-l1"><a class="reference internal" href="usb/usb_desc.html">USB 描述符</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usb/usb_request.html">USB 设备请求</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usb/usb_enum.html">USB 枚举</a></li>
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-<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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+<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>
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+<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>
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+<li class="toctree-l1"><a class="reference internal" href="../usb/usb_desc.html">USB 描述符</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usb/usb_request.html">USB 设备请求</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usb/usb_enum.html">USB 枚举</a></li>
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+<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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</ul>
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<p class="caption" role="heading"><span class="caption-text">API 手册</span></p>
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<ul>
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-<li class="toctree-l1"><a class="reference internal" href="api/api_device.html">设备协议栈</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="api/api_host.html">主机协议栈</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="api/api_port.html">主从驱动</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="api/api_config.html">USB CONFIG 说明</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../api/api_device.html">设备协议栈</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../api/api_host.html">主机协议栈</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../api/api_port.html">主从驱动</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../api/api_config.html">USB CONFIG 说明</a></li>
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</ul>
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<p class="caption" role="heading"><span class="caption-text">Class 指南</span></p>
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<ul>
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-<li class="toctree-l1"><a class="reference internal" href="class/class_cdc.html">CDC</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="class/class_hid.html">HID</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="class/class_msc.html">MSC</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="class/class_audio.html">UAC</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="class/class_video.html">UVC</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="class/winusb.html">WINUSB</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../class/class_cdc.html">CDC</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../class/class_hid.html">HID</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../class/class_msc.html">MSC</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../class/class_audio.html">UAC</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../class/class_video.html">UVC</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../class/winusb.html">WINUSB</a></li>
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</ul>
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<p class="caption" role="heading"><span class="caption-text">例程说明</span></p>
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<ul>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_cdc_acm.html">usbd_cdc_acm</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_hid.html">usbd_hid</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_msc.html">usbd_msc</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_rndis.html">usbd_rndis</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_ecm.html">usbd_cdc_ecm</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_audiov1.html">usbd_audiov1</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_audiov2.html">usbd_audiov2</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_video.html">usbd_video</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_winusb.html">usbd_winusb</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_webusb.html">usbd_webusb</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_adb.html">usbd_adb</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbh_serial.html">usbh_serial</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbh_hid.html">usbh_hid</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbh_msc.html">usbh_msc</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbh_net.html">usbh_net</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbh_bluetooth.html">usbh_bluetooth</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbh_wifi.html">usbh_wifi</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="demo/usbd_vendor.html">vendor device 驱动编写</a></li>
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-<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="demo/usb_otg.html">OTG 功能的使用</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_cdc_acm.html">usbd_cdc_acm</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_hid.html">usbd_hid</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_msc.html">usbd_msc</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_rndis.html">usbd_rndis</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_ecm.html">usbd_cdc_ecm</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_audiov1.html">usbd_audiov1</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_audiov2.html">usbd_audiov2</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_video.html">usbd_video</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_winusb.html">usbd_winusb</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_webusb.html">usbd_webusb</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_adb.html">usbd_adb</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbh_serial.html">usbh_serial</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbh_hid.html">usbh_hid</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbh_msc.html">usbh_msc</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbh_net.html">usbh_net</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbh_bluetooth.html">usbh_bluetooth</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbh_wifi.html">usbh_wifi</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../demo/usbd_vendor.html">vendor device 驱动编写</a></li>
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+<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="../demo/usb_otg.html">OTG 功能的使用</a></li>
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</ul>
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<p class="caption" role="heading"><span class="caption-text">USBIP 介绍</span></p>
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<ul>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/ohci.html">OHCI</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/ehci.html">EHCI</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/xhci.html">XHCI</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/chipidea.html">CHIPIDEA</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/dwc2.html">DWC2</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/musb.html">MUSB</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/fotg210.html">FOTG210</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/cdns2.html">CDNS2</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="usbip/cdns3.html">CDNS3</a></li>
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-<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="../usbip/ohci.html">OHCI</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/ehci.html">EHCI</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/xhci.html">XHCI</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/chipidea.html">CHIPIDEA</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/dwc2.html">DWC2</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/musb.html">MUSB</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/fotg210.html">FOTG210</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/cdns2.html">CDNS2</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../usbip/cdns3.html">CDNS3</a></li>
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+<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>
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-<li class="toctree-l1"><a class="reference internal" href="tools/index.html#usb-protocol-suite">力科 USB Protocol Suite</a></li>
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-<li class="toctree-l1"><a class="reference internal" href="tools/index.html#wireshark">Wireshark</a></li>
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-<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="../tools/index.html">chryusb_configurator</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../tools/index.html#usb-protocol-suite">力科 USB Protocol Suite</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../tools/index.html#wireshark">Wireshark</a></li>
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+<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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+<li class="toctree-l1"><a class="reference internal" href="../version.html">版本说明</a></li>
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<p class="caption" role="heading"><span class="caption-text">性能展示</span></p>
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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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+<li class="toctree-l1"><a class="reference internal" href="../show/index.html">性能展示</a></li>
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<p class="caption" role="heading"><span class="caption-text">商业支持</span></p>
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<ul>
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-<li class="toctree-l1"><a class="reference internal" href="support/index.html">商业支持</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../support/index.html">商业支持</a></li>
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<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" >
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<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
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- <a href="index.html">CherryUSB</a>
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+ <a href="../index.html">CherryUSB</a>
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- <li><a href="index.html" class="icon icon-home" aria-label="Home"></a></li>
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+ <li><a href="../index.html" class="icon icon-home" aria-label="Home"></a></li>
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<li class="breadcrumb-item active">Q & A</li>
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<li class="wy-breadcrumbs-aside">
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- <a href="_sources/q&a.rst.txt" rel="nofollow"> View page source</a>
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+ <a href="../_sources/quick_start/q&a.rst.txt" rel="nofollow"> View page source</a>
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@@ -200,7 +203,7 @@
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</section>
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<section id="cherryusb">
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<h2>CherryUSB 性能能到多少<a class="headerlink" href="#cherryusb" title="Link to this heading"></a></h2>
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-<p>参考 <a class="reference internal" href="show/index.html#performace-show"><span class="std std-ref">性能展示</span></a></p>
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+<p>参考 <a class="reference internal" href="../show/index.html#performace-show"><span class="std std-ref">性能展示</span></a></p>
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</section>
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<section id="st-ip">
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<h2>ST IP 命名问题<a class="headerlink" href="#st-ip" title="Link to this heading"></a></h2>
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@@ -214,15 +217,46 @@
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<span class="n">USB_OTG_OUTEP</span><span class="p">(</span><span class="n">i</span><span class="p">)</span><span class="o">-></span><span class="n">DOEPCTL</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">USB_OTG_DOEPCTL_EPDIS</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">USB_OTG_DOEPCTL_SNAK</span><span class="p">);</span>
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</pre></div>
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</div>
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+<p>除此之外可能存在其他未知 BUG，请自行测试。</p>
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+</section>
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+<section id="usb-log-dbg">
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+<h2>开启 USB_LOG_DBG 后无法枚举<a class="headerlink" href="#usb-log-dbg" title="Link to this heading"></a></h2>
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+<p>有且仅有商业性 IP 开启后可以枚举，其余 IP 禁止开启，否则无法枚举。懂得都懂。</p>
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+</section>
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+<section id="usb3-cv">
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+<h2>USB3 CV测试用哪个版本<a class="headerlink" href="#usb3-cv" title="Link to this heading"></a></h2>
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+<p>1.4.3 版本及以上</p>
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+</section>
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+<section id="ep-addr-xxx-fifo-overflow">
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+<h2>Ep addr XXX fifo overflow<a class="headerlink" href="#ep-addr-xxx-fifo-overflow" title="Link to this heading"></a></h2>
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+<figure class="align-default">
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+<img alt="../_images/question1.png" src="../_images/question1.png" />
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+</figure>
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+<p>该错误表示该端点默认设置的 fifo 空间不够用，需要增大 fifo 空间，通常见于 DWC2/MUSB IP。FIFO 设置参考相关的 glue 文件。</p>
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</section>
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<section id="ep-addr-xxx-overflow">
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<h2>Ep addr XXX overflow<a class="headerlink" href="#ep-addr-xxx-overflow" title="Link to this heading"></a></h2>
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-<p>该 IP 硬件上没有这么多端点, 请更换 IP or 减少端点使用。并且默认 demo 不做双向功能，考虑到不是所有的 IP 都支持，因此默认是 81 02 这样的而不是 81 01，
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-如果支持，自行修改。某些 IP 双向端点可能会占用相同的硬件信息，不一定能同时使用，自行检查。</p>
|
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+<figure class="align-default">
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+<img alt="../_images/question2.png" src="../_images/question2.png" />
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+</figure>
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+<p>该错误表示该 IP 硬件上没有这么多端点, 请更换 IP or 减少端点使用。
|
|
|
+当然也可以修改为双向端点，考虑到不是所有的 IP 都支持双向端点，因此默认 demo 不做双向功能，举例默认是 81 02 这样的而不是 81 01，如果支持，自行修改。某些 IP 双向端点可能会占用相同的硬件信息，不一定能同时使用，自行检查。</p>
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</section>
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<section id="this-dwc2-version-does-not-support-dma-mode-so-stop-working">
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<h2>This dwc2 version does not support dma mode, so stop working<a class="headerlink" href="#this-dwc2-version-does-not-support-dma-mode-so-stop-working" title="Link to this heading"></a></h2>
|
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-<p>该 DWC2 版本不支持 dma 模式，禁止使用。</p>
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|
+<p>该 DWC2 版本不支持 dma 模式，禁止使用。不使用 DMA 模式会频繁触发 NAK 中断（大概几十us一次），CPU 占用率过高。</p>
|
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+</section>
|
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+<section id="otg">
|
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+<h2>OTG 有哪些芯片支持<a class="headerlink" href="#otg" title="Link to this heading"></a></h2>
|
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|
+<p>当前主线仅 HPM 芯片支持 OTG 功能，通过 ID 引脚自动切换主从模式，其他芯片请使用手动切换模式 OR 自行实现添加 ID 识别的驱动。</p>
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+</section>
|
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+<section id="pc-com">
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+<h2>PC 识别的 COM 口如何更改名称<a class="headerlink" href="#pc-com" title="Link to this heading"></a></h2>
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|
+<p>这是微软对 CDC ACM 的驱动问题，无法修改，如需修改，请联系微软并缴纳费用+编写驱动后即可更改。</p>
|
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|
+</section>
|
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+<section id="connect-disconnect-event">
|
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+<h2>connect 和 disconnect event 不触发<a class="headerlink" href="#connect-disconnect-event" title="Link to this heading"></a></h2>
|
|
|
+<p>当前仅 hpm 芯片支持 connect 和 disconnect 事件，其他芯片请使用 USB 检测 vbus 电路。DWC2 IP 支持，但是由于需要占用引脚，并且大多是log 口，然后不同使能的配置也不一样，因此不做支持。</p>
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</section>
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<section id="has-include">
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<h2>__has_include 报错<a class="headerlink" href="#has-include" title="Link to this heading"></a></h2>
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@@ -249,23 +283,14 @@ DWC2 scatter/gather dma 模式下全部由硬件处理，但是不支持 split
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<h2>USB host 连接 USB 网卡问题<a class="headerlink" href="#usb-host-usb" title="Link to this heading"></a></h2>
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|
<p>表现为能识别网卡并且分配到 IP 地址，但是无法 ping 通，这是因为网卡自身需要开启自动拨号，通常需要使用 AT 口设置。具体为 EC20/ML307 等模块。</p>
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</section>
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-<section id="pc-com">
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-<h2>PC 识别的 COM 口如何更改名称<a class="headerlink" href="#pc-com" title="Link to this heading"></a></h2>
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|
-<p>这是微软对 CDC ACM 的驱动问题，无法修改，如需修改，请联系微软并缴纳费用即可更改。</p>
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|
-</section>
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-<section id="connect-disconnect-event">
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-<h2>connect 和 disconnect event 不触发<a class="headerlink" href="#connect-disconnect-event" title="Link to this heading"></a></h2>
|
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|
-<p>当前仅 hpm 芯片支持 connect 和 disconnect 事件，其他芯片请使用 USB 检测 vbus 电路。DWC2 IP 支持，但是由于需要占用引脚，并且大多是log 口，
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-然后不同使能的配置也不一样，因此不做支持。</p>
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-</section>
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</section>
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- <a href="quick_start/esp.html" class="btn btn-neutral float-left" title="基于 ESP-Registry 开发指南" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
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- <a href="opensource.html" class="btn btn-neutral float-right" title="官方开源项目分享" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
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+ <a href="rtthread.html" class="btn btn-neutral float-left" title="基于 RT-Thread 软件包开发指南" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
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+ <a href="share.html" class="btn btn-neutral float-right" title="开发者经验/开源项目分享" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
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sakumisu
