2024-10-07 07:38:29 +00:00
2024-09-24 13:59:54 +00:00
<!DOCTYPE html>
2024-10-10 09:14:31 +00:00
< html class = "writer-html5" lang = "en" data-content_root = "./" >
2024-09-24 13:59:54 +00:00
< head >
2024-10-10 09:14:31 +00:00
< meta charset = "utf-8" / > < meta name = "viewport" content = "width=device-width, initial-scale=1" / >
2024-09-24 13:59:54 +00:00
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" / >
2025-11-25 07:31:08 +00:00
< title > Q & A — CherryUSB 1.5.3 documentation< / title >
2024-10-10 09:14:31 +00:00
< link rel = "stylesheet" type = "text/css" href = "_static/pygments.css?v=80d5e7a1" / >
< link rel = "stylesheet" type = "text/css" href = "_static/css/theme.css?v=e59714d7" / >
2024-09-24 13:59:54 +00:00
2024-10-10 09:14:31 +00:00
< script src = "_static/jquery.js?v=5d32c60e" > < / script >
< script src = "_static/_sphinx_javascript_frameworks_compat.js?v=2cd50e6c" > < / script >
2025-11-25 07:31:08 +00:00
< script src = "_static/documentation_options.js?v=d75fd82e" > < / script >
2024-10-10 09:14:31 +00:00
< script src = "_static/doctools.js?v=9a2dae69" > < / script >
< script src = "_static/sphinx_highlight.js?v=dc90522c" > < / script >
2024-09-24 13:59:54 +00:00
< script src = "_static/js/theme.js" > < / script >
< link rel = "index" title = "Index" href = "genindex.html" / >
< link rel = "search" title = "Search" href = "search.html" / >
2025-01-19 13:22:03 +00:00
< link rel = "next" title = "官方开源项目分享" href = "opensource.html" / >
2024-09-24 13:59:54 +00:00
< link rel = "prev" title = "基于 ESP-Registry 开发指南" href = "quick_start/esp.html" / >
< / head >
< body class = "wy-body-for-nav" >
< div class = "wy-grid-for-nav" >
< nav data-toggle = "wy-nav-shift" class = "wy-nav-side" >
< div class = "wy-side-scroll" >
< div class = "wy-side-nav-search" >
< a href = "index.html" class = "icon icon-home" >
CherryUSB
< / a >
< div role = "search" >
< form id = "rtd-search-form" class = "wy-form" action = "search.html" method = "get" >
< input type = "text" name = "q" placeholder = "Search docs" aria-label = "Search docs" / >
< input type = "hidden" name = "check_keywords" value = "yes" / >
< input type = "hidden" name = "area" value = "default" / >
< / form >
< / div >
< / div > < div class = "wy-menu wy-menu-vertical" data-spy = "affix" role = "navigation" aria-label = "Navigation menu" >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > 快速上手< / span > < / p >
2024-09-24 13:59:54 +00:00
< ul class = "current" >
< 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/esp.html" > 基于 ESP-Registry 开发指南< / a > < / li >
< li class = "toctree-l1 current" > < a class = "current reference internal" href = "#" > Q & A< / a > < ul >
< li class = "toctree-l2" > < a class = "reference internal" href = "#id1" > 移植提问模板< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#id2" > 其余问题提问模板< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#cherryusb" > CherryUSB 性能能到多少< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#st-ip" > ST IP 命名问题< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#gd-ip" > GD IP 问题< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#ep-addr-xxx-overflow" > Ep addr XXX overflow< / a > < / li >
< 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 >
< li class = "toctree-l2" > < a class = "reference internal" href = "#has-include" > __has_include 报错< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#config-usb-hs" > CONFIG_USB_HS 何时使用< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#failed-to-enable-port" > Failed to enable port< / a > < / li >
2025-05-15 10:16:29 +00:00
< 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 >
2025-08-02 09:56:08 +00:00
< li class = "toctree-l2" > < a class = "reference internal" href = "#usb-err-nak" > USB_ERR_NAK 说明< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#usb-host-usb" > USB host 连接 USB 网卡问题< / a > < / li >
< 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 >
< li class = "toctree-l2" > < a class = "reference internal" href = "#connect-disconnect-event" > connect 和 disconnect event 不触发< / a > < / li >
2024-09-24 13:59:54 +00:00
< / ul >
< / li >
2025-01-19 13:22:03 +00:00
< li class = "toctree-l1" > < a class = "reference internal" href = "opensource.html" > 官方开源项目分享< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "share.html" > 开发者经验/开源项目分享< / a > < / li >
2024-09-24 13:59:54 +00:00
< / ul >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > USB 基本知识点< / span > < / p >
2024-09-24 13:59:54 +00:00
< 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 >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > API 手册< / span > < / p >
2024-09-24 13:59:54 +00:00
< 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 >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > Class 指南< / span > < / p >
2024-09-24 13:59:54 +00:00
< 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 >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > 例程说明< / span > < / p >
2024-09-24 13:59:54 +00:00
< ul >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_cdc_acm.html" > usbd_cdc_acm< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_hid.html" > usbd_hid< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_msc.html" > usbd_msc< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_rndis.html" > usbd_rndis< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_ecm.html" > usbd_cdc_ecm< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_audiov1.html" > usbd_audiov1< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_audiov2.html" > usbd_audiov2< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_video.html" > usbd_video< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_winusb.html" > usbd_winusb< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_webusb.html" > usbd_webusb< / a > < / li >
2025-06-24 07:51:46 +00:00
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbd_adb.html" > usbd_adb< / a > < / li >
2024-09-24 13:59:54 +00:00
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbh_serial.html" > usbh_serial< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbh_hid.html" > usbh_hid< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbh_msc.html" > usbh_msc< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbh_net.html" > usbh_net< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbh_bluetooth.html" > usbh_bluetooth< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usbh_wifi.html" > usbh_wifi< / a > < / li >
2024-12-04 15:04:52 +00:00
< 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 >
2025-11-25 10:45:01 +00:00
< li class = "toctree-l1" > < a class = "reference internal" href = "demo/usb_otg.html" > OTG 功能的使用< / a > < / li >
2024-09-24 13:59:54 +00:00
< / ul >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > USBIP 介绍< / span > < / p >
2024-09-24 13:59:54 +00:00
< ul >
< 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 >
< / ul >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > 工具使用< / span > < / p >
2024-09-24 13:59:54 +00:00
< 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 >
< / ul >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > 版本说明< / span > < / p >
2024-09-24 13:59:54 +00:00
< ul >
< li class = "toctree-l1" > < a class = "reference internal" href = "version.html" > 版本说明< / a > < / li >
< / ul >
2025-05-09 05:17:20 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > 性能展示< / span > < / p >
< ul >
< li class = "toctree-l1" > < a class = "reference internal" href = "show/index.html" > 性能展示< / a > < / li >
< / ul >
2024-10-10 09:14:31 +00:00
< p class = "caption" role = "heading" > < span class = "caption-text" > 商业支持< / span > < / p >
2024-09-24 13:59:54 +00:00
< ul >
< li class = "toctree-l1" > < a class = "reference internal" href = "support/index.html" > 商业支持< / a > < / li >
< / ul >
< / div >
< / div >
< / nav >
< section data-toggle = "wy-nav-shift" class = "wy-nav-content-wrap" > < nav class = "wy-nav-top" aria-label = "Mobile navigation menu" >
< i data-toggle = "wy-nav-top" class = "fa fa-bars" > < / i >
< a href = "index.html" > CherryUSB< / a >
< / nav >
< div class = "wy-nav-content" >
< div class = "rst-content" >
< div role = "navigation" aria-label = "Page navigation" >
< ul class = "wy-breadcrumbs" >
< li > < a href = "index.html" class = "icon icon-home" aria-label = "Home" > < / a > < / li >
< li class = "breadcrumb-item active" > Q & A< / li >
< li class = "wy-breadcrumbs-aside" >
< a href = "_sources/q&a.rst.txt" rel = "nofollow" > View page source< / a >
< / li >
< / ul >
< hr / >
< / div >
< div role = "main" class = "document" itemscope = "itemscope" itemtype = "http://schema.org/Article" >
< div itemprop = "articleBody" >
2024-10-10 09:14:31 +00:00
< section id = "q-a" >
< h1 > Q & A< a class = "headerlink" href = "#q-a" title = "Link to this heading" > < / a > < / h1 >
< section id = "id1" >
< h2 > 移植提问模板< a class = "headerlink" href = "#id1" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< p > 请在下列途径提交问题：
- RT-Thread 官方论坛: < a class = "reference external" href = "https://club.rt-thread.org/ask/tag/5f5f851966917b14.html" > https://club.rt-thread.org/ask/tag/5f5f851966917b14.html< / a >
- Github issue: < a class = "reference external" href = "https://github.com/cherry-embedded/CherryUSB/issues/new/choose" > https://github.com/cherry-embedded/CherryUSB/issues/new/choose< / a > < / p >
< p > 提问中请包含以下信息：< / p >
< ul class = "simple" >
2025-08-02 09:56:08 +00:00
< li > < p > 使用的版本< / p > < / li >
2024-09-24 13:59:54 +00:00
< li > < p > 使用的板子， ， < / p > < / li >
2025-07-22 10:21:23 +00:00
< li > < p > 是否配置 USB 中断， ， ， < / p > < / li >
2024-09-24 13:59:54 +00:00
< li > < p > 是否能进 USB 中断< / p > < / li >
< li > < p > 芯片是否带有 cache功能， < / p > < / li >
2025-08-02 09:56:08 +00:00
< li > < p > USB 电路是否画正确，是否使用杜邦线连接，是否直连，如果正常，请说明正常原因< / p > < / li >
2025-07-22 10:21:23 +00:00
< li > < p > 如果能进中断，配置 < strong > #define CONFIG_USB_DBG_LEVEL USB_DBG_LOG< / strong > 并提供 log， ， < / p > < / li >
2024-09-24 13:59:54 +00:00
< li > < p > 是否流片并销售< / p > < / li >
< / ul >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "id2" >
< h2 > 其余问题提问模板< a class = "headerlink" href = "#id2" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< p > 具体说明现象，复现方式，使用我提供的 demo 再测试，以及提供完整 log< / p >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "cherryusb" >
< h2 > CherryUSB 性能能到多少< a class = "headerlink" href = "#cherryusb" title = "Link to this heading" > < / a > < / h2 >
2025-05-15 10:16:29 +00:00
< 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 >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "st-ip" >
< h2 > ST IP 命名问题< a class = "headerlink" href = "#st-ip" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< p > ST 命名为 USB_OTG_FS, USB_OTG_HS， ， ， ， ， ， < / p >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "gd-ip" >
< h2 > GD IP 问题< a class = "headerlink" href = "#gd-ip" title = "Link to this heading" > < / a > < / h2 >
2025-07-28 11:16:04 +00:00
< p > GD IP 采用 DWC2， （ ） ， ， < / p >
2024-12-19 13:14:41 +00:00
< p > 其次 GD 复位以后无法使用 EPDIS 功能关闭端点，需要用户删除 reset 中断中的以下代码：< / p >
< div class = "highlight-C notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > USB_OTG_INEP< / span > < span class = "p" > (< / span > < span class = "n" > i< / span > < span class = "p" > )< / span > < span class = "o" > -> < / span > < span class = "n" > DIEPCTL< / span > < span class = "w" > < / span > < span class = "o" > =< / span > < span class = "w" > < / span > < span class = "p" > (< / span > < span class = "n" > USB_OTG_DIEPCTL_EPDIS< / span > < span class = "w" > < / span > < span class = "o" > |< / span > < span class = "w" > < / span > < span class = "n" > USB_OTG_DIEPCTL_SNAK< / span > < span class = "p" > );< / span >
< 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 >
< / pre > < / div >
< / div >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "ep-addr-xxx-overflow" >
< h2 > Ep addr XXX overflow< a class = "headerlink" href = "#ep-addr-xxx-overflow" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< 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，
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 >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "this-dwc2-version-does-not-support-dma-mode-so-stop-working" >
< 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 >
2024-09-24 13:59:54 +00:00
< p > 该 DWC2 版本不支持 dma 模式，禁止使用。< / p >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "has-include" >
< h2 > __has_include 报错< a class = "headerlink" href = "#has-include" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< p > 如果报错，需要编译器支持 c99 语法，如果是 keil， < / p >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "config-usb-hs" >
< h2 > CONFIG_USB_HS 何时使用< a class = "headerlink" href = "#config-usb-hs" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< p > 当你的芯片硬件支持高速，并想初始化成高速模式时开启，相关 IP 会根据该宏配置内部或者外部 高速 PHY。< / p >
2024-10-10 09:14:31 +00:00
< / section >
< section id = "failed-to-enable-port" >
< h2 > Failed to enable port< a class = "headerlink" href = "#failed-to-enable-port" title = "Link to this heading" > < / a > < / h2 >
2024-09-24 13:59:54 +00:00
< p > 供电不足或者硬件 USB 电路问题< / p >
2024-10-10 09:14:31 +00:00
< / section >
2025-05-15 10:16:29 +00:00
< section id = "usb-host-urb-12-14" >
< h2 > 移植 usb host 出现 urb 返回 -12/-14< a class = "headerlink" href = "#usb-host-urb-12-14" title = "Link to this heading" > < / a > < / h2 >
2025-07-28 11:16:04 +00:00
< p > 检查 phy 配置， < / p >
2025-05-15 10:16:29 +00:00
< / section >
2025-08-02 09:56:08 +00:00
< section id = "usb-err-nak" >
< h2 > USB_ERR_NAK 说明< a class = "headerlink" href = "#usb-err-nak" title = "Link to this heading" > < / a > < / h2 >
< p > USB_ERR_NAK 只存在于 DWC2 buffer dma 模式，
DWC2 scatter/gather dma 模式下全部由硬件处理，但是不支持 split 传输。总结， < strong > 半斤 IP< / strong > 。< / p >
< / section >
< section id = "usb-host-usb" >
< h2 > USB host 连接 USB 网卡问题< a class = "headerlink" href = "#usb-host-usb" title = "Link to this heading" > < / a > < / h2 >
< 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 >
< / section >
< section id = "pc-com" >
< 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 >
< 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 >
< / section >
< section id = "connect-disconnect-event" >
< 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， ，
然后不同使能的配置也不一样，因此不做支持。< / p >
< / section >
2024-10-10 09:14:31 +00:00
< / section >
2024-09-24 13:59:54 +00:00
< / div >
< / div >
< footer > < div class = "rst-footer-buttons" role = "navigation" aria-label = "Footer" >
< 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 >
2025-01-19 13:22:03 +00:00
< 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 >
2024-09-24 13:59:54 +00:00
< / div >
< hr / >
< div role = "contentinfo" >
2025-05-19 09:23:59 +00:00
< p > © Copyright 2022 ~ 2025, sakumisu.< / p >
2024-09-24 13:59:54 +00:00
< / div >
Built with < a href = "https://www.sphinx-doc.org/" > Sphinx< / a > using a
< a href = "https://github.com/readthedocs/sphinx_rtd_theme" > theme< / a >
provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
< / footer >
< / div >
< / div >
< / section >
< / div >
< script >
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
< / script >
< / body >
< / html >
