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<li class="toctree-l2"><a class="reference internal" href="#config">通用 CONFIG</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#config-usb-printf">CONFIG_USB_PRINTF</a></li>
<li class="toctree-l3"><a class="reference internal" href="#config-usb-dbg-level">CONFIG_USB_DBG_LEVEL</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#config-usbdev-msc-thread">CONFIG_USBDEV_MSC_THREAD</a></li>
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<p class="caption" role="heading"><span class="caption-text">USBIP 介绍</span></p>
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  <section id="usb-config">
<h1>USB CONFIG 说明<a class="headerlink" href="#usb-config" title="Link to this heading"></a></h1>
<section id="config">
<h2>通用 CONFIG<a class="headerlink" href="#config" title="Link to this heading"></a></h2>
<section id="config-usb-printf">
<h3>CONFIG_USB_PRINTF<a class="headerlink" href="#config-usb-printf" title="Link to this heading"></a></h3>
<p>USB log 功能，默认重定向到 printf，需要注意，USB log 会在中断中使用，因此重定向的 api 不允许阻塞。举例，如果使用的是 rt-thread，请更换成 rt-kprintf</p>
</section>
<section id="config-usb-dbg-level">
<h3>CONFIG_USB_DBG_LEVEL<a class="headerlink" href="#config-usb-dbg-level" title="Link to this heading"></a></h3>
<p>控制 log 的打印级别</p>
</section>
<section id="config-usb-printf-color-enable">
<h3>CONFIG_USB_PRINTF_COLOR_ENABLE<a class="headerlink" href="#config-usb-printf-color-enable" title="Link to this heading"></a></h3>
<p>控制 log 颜色打印，默认开启</p>
</section>
<section id="config-usb-align-size">
<h3>CONFIG_USB_ALIGN_SIZE<a class="headerlink" href="#config-usb-align-size" title="Link to this heading"></a></h3>
<p>USB buffer 的对齐大小，默认是 4。IP 在 dma 模式下可能对输入的 buffer有对齐要求，一般是4，如果是其他对齐方式，请修改此值。</p>
</section>
<section id="usb-nocache-ram-section">
<h3>USB_NOCACHE_RAM_SECTION<a class="headerlink" href="#usb-nocache-ram-section" title="Link to this heading"></a></h3>
<p>如果芯片没有 cache 功能，此宏无效。如果有，则 USB 的输入输出 buffer 必须放在 nocache ram 中，保证数据一致性。</p>
</section>
</section>
<section id="id1">
<h2>设备协议栈 CONFIG<a class="headerlink" href="#id1" title="Link to this heading"></a></h2>
<section id="config-usbdev-request-buffer-len">
<h3>CONFIG_USBDEV_REQUEST_BUFFER_LEN<a class="headerlink" href="#config-usbdev-request-buffer-len" title="Link to this heading"></a></h3>
<p>控制传输接收和发送的 buffer 最大长度，默认是 512。</p>
</section>
<section id="config-usbdev-setup-log-print">
<h3>CONFIG_USBDEV_SETUP_LOG_PRINT<a class="headerlink" href="#config-usbdev-setup-log-print" title="Link to this heading"></a></h3>
<p>使能或者关闭 setup 包的 dump 信息，默认关闭。</p>
</section>
<section id="config-usbdev-desc-check">
<h3>CONFIG_USBDEV_DESC_CHECK<a class="headerlink" href="#config-usbdev-desc-check" title="Link to this heading"></a></h3>
<p>暂时没有实现</p>
</section>
<section id="config-usbdev-test-mode">
<h3>CONFIG_USBDEV_TEST_MODE<a class="headerlink" href="#config-usbdev-test-mode" title="Link to this heading"></a></h3>
<p>使能或者关闭 usb test mode</p>
</section>
<section id="config-usbdev-msc-max-bufsize">
<h3>CONFIG_USBDEV_MSC_MAX_BUFSIZE<a class="headerlink" href="#config-usbdev-msc-max-bufsize" title="Link to this heading"></a></h3>
<p>msc 缓存的最大长度，缓存越大，USB 的速度越高，因为介质一般多个 block 读写速度比单个 block 高很多，比如 sd 卡。
默认 512 ，如果是 flash 需要改成 4K, 缓存的大小需要是介质的一个 block size 的整数倍。</p>
</section>
<section id="config-usbdev-msc-manufacturer-string">
<h3>CONFIG_USBDEV_MSC_MANUFACTURER_STRING<a class="headerlink" href="#config-usbdev-msc-manufacturer-string" title="Link to this heading"></a></h3>
</section>
<section id="config-usbdev-msc-product-string">
<h3>CONFIG_USBDEV_MSC_PRODUCT_STRING<a class="headerlink" href="#config-usbdev-msc-product-string" title="Link to this heading"></a></h3>
</section>
<section id="config-usbdev-msc-version-string">
<h3>CONFIG_USBDEV_MSC_VERSION_STRING<a class="headerlink" href="#config-usbdev-msc-version-string" title="Link to this heading"></a></h3>
</section>
<section id="config-usbdev-msc-polling">
<h3>CONFIG_USBDEV_MSC_POLLING<a class="headerlink" href="#config-usbdev-msc-polling" title="Link to this heading"></a></h3>
<p>将 usbd_msc_sector_read 和 usbd_msc_sector_write 操作放在 while1 中运行，裸机下使用。</p>
</section>
<section id="config-usbdev-msc-thread">
<h3>CONFIG_USBDEV_MSC_THREAD<a class="headerlink" href="#config-usbdev-msc-thread" title="Link to this heading"></a></h3>
<p>使能或者关闭 msc 线程，默认关闭。usbd_msc_sector_read 和 usbd_msc_sector_write 默认是在中断中执行，所以如果开启了 os 建议开启此宏，那么，
usbd_msc_sector_read 和 usbd_msc_sector_write 就会在线程中执行。</p>
</section>
<section id="config-usbdev-msc-prio">
<h3>CONFIG_USBDEV_MSC_PRIO<a class="headerlink" href="#config-usbdev-msc-prio" title="Link to this heading"></a></h3>
<p>MSC 读写线程的优先级，默认是 4，数值越小，优先级越高</p>
</section>
<section id="config-usbdev-msc-stacksize">
<h3>CONFIG_USBDEV_MSC_STACKSIZE<a class="headerlink" href="#config-usbdev-msc-stacksize" title="Link to this heading"></a></h3>
<p>MSC 读写线程的堆栈大小，默认 2K 字节</p>
</section>
<section id="config-usbdev-rndis-resp-buffer-size">
<h3>CONFIG_USBDEV_RNDIS_RESP_BUFFER_SIZE<a class="headerlink" href="#config-usbdev-rndis-resp-buffer-size" title="Link to this heading"></a></h3>
<p>rndis 控制传输最大接收和发送的长度，根据 RNDIS options list 决定最小长度，默认要大于等于 156</p>
</section>
<section id="config-usbdev-rndis-eth-max-frame-size">
<h3>CONFIG_USBDEV_RNDIS_ETH_MAX_FRAME_SIZE<a class="headerlink" href="#config-usbdev-rndis-eth-max-frame-size" title="Link to this heading"></a></h3>
<p>rndis 以太网帧的最大长度，默认 1580</p>
</section>
<section id="config-usbdev-rndis-vendor-id">
<h3>CONFIG_USBDEV_RNDIS_VENDOR_ID<a class="headerlink" href="#config-usbdev-rndis-vendor-id" title="Link to this heading"></a></h3>
</section>
<section id="config-usbdev-rndis-vendor-desc">
<h3>CONFIG_USBDEV_RNDIS_VENDOR_DESC<a class="headerlink" href="#config-usbdev-rndis-vendor-desc" title="Link to this heading"></a></h3>
</section>
<section id="config-usbdev-rndis-using-lwip">
<h3>CONFIG_USBDEV_RNDIS_USING_LWIP<a class="headerlink" href="#config-usbdev-rndis-using-lwip" title="Link to this heading"></a></h3>
<p>rndis 与 lwip 接口的对接</p>
</section>
</section>
<section id="id2">
<h2>主机协议栈 CONFIG<a class="headerlink" href="#id2" title="Link to this heading"></a></h2>
<p>以下参数决定了支持的最大外部hub数量，接口数，每个接口的端点数和 altsetting 数量，更改此值会影响 ram 的大小，建议根据实际情况更改。</p>
<div class="highlight-C notranslate"><div class="highlight"><pre><span></span><span class="cp">#define CONFIG_USBHOST_MAX_RHPORTS          1</span>
<span class="cp">#define CONFIG_USBHOST_MAX_EXTHUBS          1</span>
<span class="cp">#define CONFIG_USBHOST_MAX_EHPORTS          4</span>
<span class="cp">#define CONFIG_USBHOST_MAX_INTERFACES       6</span>
<span class="cp">#define CONFIG_USBHOST_MAX_INTF_ALTSETTINGS 1</span>
<span class="cp">#define CONFIG_USBHOST_MAX_ENDPOINTS        4</span>
</pre></div>
</div>
<p>以下参数决定了支持的 class 数目，更改此值会影响 ram 的大小，建议根据实际情况更改。</p>
<div class="highlight-C notranslate"><div class="highlight"><pre><span></span><span class="cp">#define CONFIG_USBHOST_MAX_CDC_ACM_CLASS 4</span>
<span class="cp">#define CONFIG_USBHOST_MAX_HID_CLASS     4</span>
<span class="cp">#define CONFIG_USBHOST_MAX_MSC_CLASS     2</span>
<span class="cp">#define CONFIG_USBHOST_MAX_AUDIO_CLASS   1</span>
<span class="cp">#define CONFIG_USBHOST_MAX_VIDEO_CLASS   1</span>
</pre></div>
</div>
<section id="config-usbhost-psc-prio">
<h3>CONFIG_USBHOST_PSC_PRIO<a class="headerlink" href="#config-usbhost-psc-prio" title="Link to this heading"></a></h3>
<p>主机插拔线程的优先级，默认是 0，数值越小，优先级越高</p>
</section>
<section id="config-usbhost-psc-stacksize">
<h3>CONFIG_USBHOST_PSC_STACKSIZE<a class="headerlink" href="#config-usbhost-psc-stacksize" title="Link to this heading"></a></h3>
<p>主机插拔线程的堆栈大小，默认 2K 字节</p>
</section>
<section id="config-usbhost-request-buffer-len">
<h3>CONFIG_USBHOST_REQUEST_BUFFER_LEN<a class="headerlink" href="#config-usbhost-request-buffer-len" title="Link to this heading"></a></h3>
<p>控制传输能够接收或者发送的最大长度</p>
</section>
<section id="config-usbhost-control-transfer-timeout">
<h3>CONFIG_USBHOST_CONTROL_TRANSFER_TIMEOUT<a class="headerlink" href="#config-usbhost-control-transfer-timeout" title="Link to this heading"></a></h3>
<p>控制传输发送或者接收的超时时间，默认 1s</p>
</section>
<section id="config-usbhost-msc-timeout">
<h3>CONFIG_USBHOST_MSC_TIMEOUT<a class="headerlink" href="#config-usbhost-msc-timeout" title="Link to this heading"></a></h3>
<p>MSC 读写传输的超时时间，默认 5s</p>
</section>
</section>
</section>


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