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< title > Q & A — CherryUSB 1.4.1 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 = "#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 = "#dwc2-has-less-endpoints-than-config-please-check" > dwc2 has less endpoints than config, please check< / 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 >
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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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< p class = "caption" role = "heading" > < span class = "caption-text" > API 手册< / span > < / p >
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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_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 >
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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_cdc_acm.html" > usbd_cdc_acm< / a > < / li >
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< 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 >
< 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_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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< 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 >
< 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 >
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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 >
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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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< 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 >
< li > < p > USB 中断，时钟，引脚，寄存器地址是否正确，截图< / p > < / li >
< 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 >
< li > < p > 打开 CONFGI_USBDEV_SETUP_LOG_PRINT， < / p > < / li >
< 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 >
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< p > 可以达到硬件极限性能， ， < / p >
< ul class = "simple" >
< li > < p > HPM 系列(从机可以到 42MB/S, 主机 44MB/S, 已经达到硬件极限)< / p > < / li >
< li > < p > BL 系列（从机 32MB/S, 主机 25MB/S, 已经达到硬件极限）< / p > < / li >
< li > < p > STM32F4 全速（从机 900KB/S, 主机 1.12MB/S, 已经达到硬件极限）< / p > < / li >
< / ul >
< p > 从机测速demo: cdc_acm_template.c 并且关闭 log， < cite > tools/test_srcipts/test_cdc_speed.py< / cite >
主机测速demo: usb_host.c 中 TEST_USBH_CDC_SPEED=1< / 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 >
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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 >
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< p > GD IP 采用 DWC2， （ ） ， ， < / p >
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< / section >
< section id = "dwc2-has-less-endpoints-than-config-please-check" >
< h2 > dwc2 has less endpoints than config, please check< a class = "headerlink" href = "#dwc2-has-less-endpoints-than-config-please-check" title = "Link to this heading" > < / a > < / h2 >
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< p > 该 IP 硬件上没有这么多端点，请修改 < cite > CONFIG_USBDEV_EP_NUM< / cite > < / p >
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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 >
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 >
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< p > 该 DWC2 版本不支持 dma 模式，禁止使用。< / p >
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< / 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 >
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