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  <section id="performace-show">
<span id="id1"></span><h1>性能展示<a class="headerlink" href="#performace-show" title="Link to this heading"></a></h1>
<p>以下演示了 CherryUSB 在不同应用中的性能表现。主要演示高速模式，全速看不出什么性能差异。</p>
<section id="cdc-acm">
<h2>CDC ACM 通信<a class="headerlink" href="#cdc-acm" title="Link to this heading"></a></h2>
<p>可以达到硬件极限性能，当然需要硬件理论支持到这速度，CherryUSB 就支持到这速度,举例如下：</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，脚本使用 <cite>tools/test_srcipts/test_cdc_speed.py</cite>
主机测速demo: usb_host.c 中 TEST_USBH_CDC_SPEED=1</p>
</section>
<section id="usb-device-msc">
<h2>USB Device MSC<a class="headerlink" href="#usb-device-msc" title="Link to this heading"></a></h2>
<p>演示 USB Device MSC 使用 SDXC3.0 + EMMC 测试。</p>
<figure class="align-default">
<img alt="../_images/usbdev_msc.png" src="../_images/usbdev_msc.png" />
</figure>
</section>
<section id="usb-device-rndis">
<h2>USB Device RNDIS<a class="headerlink" href="#usb-device-rndis" title="Link to this heading"></a></h2>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>默认 rndis 仅支持单包，因此下面速度为最低速度。多包支持需要联系作者。</p>
</div>
<p>演示 USB Device RNDIS 局域网下搭配 lwip 的速度。</p>
<p>作为 client</p>
<figure class="align-default">
<img alt="../_images/usbdev_rndis_lwip.png" src="../_images/usbdev_rndis_lwip.png" />
</figure>
<p>作为 server</p>
<figure class="align-default">
<img alt="../_images/usbdev_rndis_lwip2.png" src="../_images/usbdev_rndis_lwip2.png" />
</figure>
<p>演示 USB Device RNDIS + WIFI 透传测试。</p>
<figure class="align-default">
<img alt="../_images/usbdev_rndis_wifi.png" src="../_images/usbdev_rndis_wifi.png" />
</figure>
<figure class="align-default">
<img alt="../_images/usbdev_rndis_wifi2.png" src="../_images/usbdev_rndis_wifi2.png" />
</figure>
<p>演示 USB Device RNDIS + 百兆以太网透传测试。</p>
<figure class="align-default">
<img alt="../_images/usbdev_rndis_win.png" src="../_images/usbdev_rndis_win.png" />
</figure>
<figure class="align-default">
<img alt="../_images/usbdev_rndis_linux.png" src="../_images/usbdev_rndis_linux.png" />
</figure>
</section>
<section id="usb-device-uvc">
<h2>USB Device UVC<a class="headerlink" href="#usb-device-uvc" title="Link to this heading"></a></h2>
<p>演示 USB Device UVC + 摄像头传输 YUYV/MJPEG 640 * 480 图像。FPS 30。</p>
<figure class="align-default">
<img alt="../_images/usbdev_uvc_mjpeg.png" src="../_images/usbdev_uvc_mjpeg.png" />
</figure>
<figure class="align-default">
<img alt="../_images/usbdev_uvc_yuv.png" src="../_images/usbdev_uvc_yuv.png" />
</figure>
</section>
<section id="usb-host-hub">
<h2>USB Host HUB<a class="headerlink" href="#usb-host-hub" title="Link to this heading"></a></h2>
<p>多级 hub 支持，演示 1托 7 HUB</p>
<figure class="align-default">
<img alt="../_images/usbhost_hub.png" src="../_images/usbhost_hub.png" />
</figure>
<figure class="align-default">
<img alt="../_images/usbhost_hub2.png" src="../_images/usbhost_hub2.png" />
</figure>
</section>
<section id="usb-host-msc">
<h2>USB Host MSC<a class="headerlink" href="#usb-host-msc" title="Link to this heading"></a></h2>
<p>演示 USB Host MSC 在 USB2.0 和 USB3.0 下的速度，U盘推荐使用固态测试。</p>
<figure class="align-default">
<img alt="../_images/usbhost_msc.png" src="../_images/usbhost_msc.png" />
</figure>
<figure class="align-default">
<img alt="../_images/usbhost_msc_xhci.png" src="../_images/usbhost_msc_xhci.png" />
</figure>
</section>
<section id="usb-host-uvc">
<h2>USB Host UVC<a class="headerlink" href="#usb-host-uvc" title="Link to this heading"></a></h2>
<p>演示 USB Host UVC 驱动 648 * 480 YUV 摄像头。FPS 30。</p>
<figure class="align-default">
<img alt="../_images/usbhost_uvc.gif" src="../_images/usbhost_uvc.gif" />
</figure>
</section>
<section id="usb-host-asix">
<h2>USB Host ASIX 网卡<a class="headerlink" href="#usb-host-asix" title="Link to this heading"></a></h2>
<p>演示 USB Host 驱动 AX88772 USB 以太网模块。</p>
<figure class="align-default">
<img alt="../_images/usbhost_ax88772_1.png" src="../_images/usbhost_ax88772_1.png" />
</figure>
<figure class="align-default">
<img alt="../_images/usbhost_ax88772_2.png" src="../_images/usbhost_ax88772_2.png" />
</figure>
</section>
<section id="usb-host-rndis">
<h2>USB Host RNDIS 网卡<a class="headerlink" href="#usb-host-rndis" title="Link to this heading"></a></h2>
<p>演示 USB Host 驱动手机，手机开启 USB 共享网络即可使用 RNDIS 。</p>
<figure class="align-default">
<img alt="../_images/usbhost_rndis.png" src="../_images/usbhost_rndis.png" />
</figure>
</section>
<section id="usb-host-wifi">
<h2>USB Host WIFI<a class="headerlink" href="#usb-host-wifi" title="Link to this heading"></a></h2>
<p>演示 USB Host 驱动 BL616 USB WIFI。</p>
<figure class="align-default">
<img alt="../_images/usbhost_wifi.png" src="../_images/usbhost_wifi.png" />
</figure>
</section>
</section>


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