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< title > Q & A — CherryUSB 1.5.1 documentation< / title >
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< p class = "caption" role = "heading" > < span class = "caption-text" > 快速上手< / span > < / p >
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< 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 >
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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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< p class = "caption" role = "heading" > < span class = "caption-text" > USB 基本知识点< / span > < / p >
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< 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 >
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< p class = "caption" role = "heading" > < span class = "caption-text" > API 手册< / span > < / p >
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< p class = "caption" role = "heading" > < span class = "caption-text" > 例程说明< / span > < / p >
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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 >
< 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 >
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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 >
< 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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< / ul >
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< p class = "caption" role = "heading" > < span class = "caption-text" > USBIP 介绍< / span > < / p >
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< 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 >
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< 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 >
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< 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" > 版本说明< / 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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< 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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< p class = "caption" role = "heading" > < span class = "caption-text" > 商业支持< / span > < / p >
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< a href = "_sources/q&a.rst.txt" rel = "nofollow" > View page source< / a >
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< 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 >
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< 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" >
< li > < p > 使用的板子， ， < / p > < / li >
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< li > < p > 是否配置 USB 中断， ， ， < / p > < / li >
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< li > < p > 是否能进 USB 中断< / p > < / li >
< li > < p > 芯片是否带有 cache功能， < / p > < / li >
< li > < p > 硬件是否正常，是否使用杜邦线连接，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 >
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< li > < p > 是否流片并销售< / p > < / li >
< / ul >
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< / 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 >
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< 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 >
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< / 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 >
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< / 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 >
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< p > ST 命名为 USB_OTG_FS, USB_OTG_HS， ， ， ， ， ， < / p >
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< / 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 >
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< 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 >
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< / 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 >
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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，
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 >
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< 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 >
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< 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 >
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< 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 >
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< 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 >
2024-10-10 09:14:31 +00:00
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2024-09-24 13:59:54 +00:00
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2025-01-19 13:22:03 +00:00
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