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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1">
<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/usb/usb-device_configuration.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">USB Device 配置</h1>
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
Read time: 9 minute(s)
</div>
<div class="- topic/body concept/conbody body conbody">
<section class="- topic/section section" id="usb_device_configuration__section_lbt_13z_21c" data-ofbid="usb_device_configuration__section_lbt_13z_21c"><h2 class="- topic/title title sectiontitle">USB Device Controller 配置</h2>
<div class="- topic/p p" data-ofbid="d108303e38__20250123155209">
<ol class="- topic/ol ol" id="usb_device_configuration__ol_dqg_pfz_21c" data-ofbid="usb_device_configuration__ol_dqg_pfz_21c">
<li class="- topic/li li" data-ofbid="d108303e42__20250123155209">
<div class="- topic/p p" data-ofbid="d108303e44__20250123155209">Linux Kernel Kconfig 文件中使能相应 UDC
Driver：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_jpz_pfz_21c" data-ofbid="usb_device_configuration__codeblock_jpz_pfz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support &gt; USB Peripheral Controller
&lt;*&gt; ArtInChip USB2.<span class="hl-number">0</span> Device Controller</code></pre></div>
</li>
<li class="- topic/li li" data-ofbid="d108303e50__20250123155209">
<div class="- topic/p p" data-ofbid="d108303e52__20250123155209">DTS 文件中配置相应 UDC
Device:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_y4n_qfz_21c" data-ofbid="usb_device_configuration__codeblock_y4n_qfz_21c"><code>aicudc: udc@<span class="hl-number">10200000</span> {
compatible = <span class="hl-string">"artinchip,aic-udc-v1.0"</span>;
reg = &lt;<span class="hl-number">0x0</span> <span class="hl-number">0x10200000</span> <span class="hl-number">0x0</span> <span class="hl-number">0x1000</span>&gt;;
interrupts-extended = &lt;&amp;plic0 <span class="hl-number">34</span> IRQ_TYPE_LEVEL_HIGH&gt;;
clocks = &lt;&amp;cmu CLK_USBD&gt;, &lt;&amp;cmu CLK_USB_PHY0&gt;;
clock-names = <span class="hl-string">"udc_clk"</span>;
resets = &lt;&amp;rst RESET_USBD&gt;, &lt;&amp;rst RESET_USBPHY0&gt;;
reset-names = <span class="hl-string">"aicudc"</span>, <span class="hl-string">"aicudc-ecc"</span>;
status = <span class="hl-string">"okay"</span>;
};</code></pre></div>
</li>
</ol>
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<section class="- topic/section section" id="usb_device_configuration__section_k5g_c3z_21c" data-ofbid="usb_device_configuration__section_k5g_c3z_21c"><h2 class="- topic/title title sectiontitle">USB Gadget 配置</h2>
<p class="- topic/p p" data-ofbid="d108303e66__20250123155209">为了方便 Linux 系统模拟成各种类型的 USB Device，Linux 设计了一个 <code class="+ topic/ph pr-d/codeph ph codeph">Gadget Device</code> 。为了方便用户使用
，Linux 又将 <code class="+ topic/ph pr-d/codeph ph codeph">ConfigFS</code> 引入 USB Device 子系统，用来灵活配置 <code class="+ topic/ph pr-d/codeph ph codeph">Gadget
Device</code>。</p>
<div class="- topic/p p" data-ofbid="d108303e78__20250123155209">所以在使用 USB Device 时，在 Linux Kernel 中把这两者都配置成使能。<ul class="- topic/ul ul" id="usb_device_configuration__ul_i1s_sfz_21c" data-ofbid="usb_device_configuration__ul_i1s_sfz_21c">
<li class="- topic/li li" data-ofbid="d108303e82__20250123155209"><strong class="+ topic/ph hi-d/b ph b">Gadget</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_ign_tfz_21c" data-ofbid="usb_device_configuration__codeblock_ign_tfz_21c"><code>&gt; Device Drivers &gt; USB support
&lt;*&gt; USB Gadget Support ---&gt;</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e88__20250123155209"><strong class="+ topic/ph hi-d/b ph b">ConfigFS</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_qgb_5fz_21c" data-ofbid="usb_device_configuration__codeblock_qgb_5fz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support
&lt;*&gt; USB Gadget functions configurable through configfs</code></pre></li>
</ul></div>
</section>
<section class="- topic/section section" id="usb_device_configuration__section_kdh_f3z_21c" data-ofbid="usb_device_configuration__section_kdh_f3z_21c"><h2 class="- topic/title title sectiontitle">USB Interface 配置</h2>
<div class="- topic/p p" data-ofbid="d108303e101__20250123155209">在 <code class="+ topic/ph pr-d/codeph ph codeph">Gadget Device</code> 基础之上，需要配置具体的 <code class="+ topic/ph pr-d/codeph ph codeph">Interface / Function</code>
才能提供具体的 USB Device 功能。USB Gadget Device 可以模拟成各种功能的 USB 外设，例如：USB 串口、USB 网口、U 盘等<ol class="- topic/ol ol" id="usb_device_configuration__ol_y1v_xfz_21c" data-ofbid="usb_device_configuration__ol_y1v_xfz_21c">
<li class="- topic/li li" data-ofbid="d108303e111__20250123155209">ACM 串口 配置。<ol class="- topic/ol ol" type="a" id="usb_device_configuration__ol_bzr_1gz_21c" data-ofbid="usb_device_configuration__ol_bzr_1gz_21c">
<li class="- topic/li li" data-ofbid="d108303e115__20250123155209">Linux Kernel Kconfig 文件中使能 <code class="+ topic/ph pr-d/codeph ph codeph">CDC ACM</code> 类型的
<code class="+ topic/ph pr-d/codeph ph codeph">Gadget functions</code>
：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_nk5_yfz_21c" data-ofbid="usb_device_configuration__codeblock_nk5_yfz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support
&lt;*&gt; USB Gadget functions configurable through configfs
[*] Abstract Control Model (CDC ACM)
&gt; Device Drivers
[*] Block devices ---&gt;</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e126__20250123155209">通过用户态的 configfs 文件接口创建包含 <code class="+ topic/ph pr-d/codeph ph codeph">ACM</code> 串口功能的 USB
Device：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_czp_zfz_21c" data-ofbid="usb_device_configuration__codeblock_czp_zfz_21c"><code>mount -t configfs none /sys/kernel/config
cd /sys/kernel/config/usb_gadget
mkdir g1
cd g1
echo <span class="hl-string">"0x1d6b"</span> &gt; idVendor
echo <span class="hl-string">"0x0104"</span> &gt; idProduct
mkdir strings/<span class="hl-number">0x409</span>
ls strings/<span class="hl-number">0x409</span>/
echo <span class="hl-string">"0123456789"</span> &gt; strings/<span class="hl-number">0x409</span>/serialnumber
echo <span class="hl-string">"AIC Inc."</span> &gt; strings/<span class="hl-number">0x409</span>/manufacturer
echo <span class="hl-string">"Bar Gadget"</span> &gt; strings/<span class="hl-number">0x409</span>/product
mkdir functions/acm.GS0
mkdir configs/c.<span class="hl-number">1</span>
ls configs/c.<span class="hl-number">1</span>
mkdir configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>
ls configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>/
echo <span class="hl-string">"ACM"</span> &gt; configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>/configuration
ln -s functions/acm.GS0 configs/c.<span class="hl-number">1</span>
echo `ls /sys/class/udc` &gt; UDC</code></pre></li>
</ol><div class="- topic/p p" data-ofbid="d108303e134__20250123155209">用户使用：<ol class="- topic/ol ol" type="a" id="usb_device_configuration__ol_rh2_dgz_21c" data-ofbid="usb_device_configuration__ol_rh2_dgz_21c">
<li class="- topic/li li" data-ofbid="d108303e138__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e140__20250123155209">将单板的 USB Device 端口和 Windows PC 的 USB Host 端口连接，在 Windows PC
设备管理器会看到一个新的 USB 串口节点：</p>
<div class="- topic/p p" data-ofbid="d108303e143__20250123155209"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="usb_device_configuration__image_sh2_dgz_21c" src="../../../images/usb/serial_win_res.png" alt="image0"/></div><br/></div>
</li>
<li class="- topic/li li" data-ofbid="d108303e151__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e153__20250123155209">在 PC 端使用串口终端工具打开 COM12，波特率使用 115200。</p>
</li>
<li class="- topic/li li" data-ofbid="d108303e157__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e159__20250123155209">在单板端执行： <code class="+ topic/ph pr-d/codeph ph codeph">echo abd &gt; /dev/ttyGS0</code> ，在 PC
端串口就会收到该字符串：</p>
<div class="- topic/p p" data-ofbid="d108303e165__20250123155209"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="usb_device_configuration__image_th2_dgz_21c" src="../../../images/usb/serial_win_term.png" width="480" alt="image1"/></div><br/></div>
</li>
<li class="- topic/li li" data-ofbid="d108303e173__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e175__20250123155209">在单板端执行 <code class="+ topic/ph pr-d/codeph ph codeph">cat /dev/ttyGS0</code> ，在 PC 端写一个字符串
“123412345” ，点回车后，在单板端也能收到该字符串。</p>
</li>
</ol></div></li>
<li class="- topic/li li" data-ofbid="d108303e183__20250123155209">U 盘 配置<ol class="- topic/ol ol" type="a" id="usb_device_configuration__ol_yzc_mgz_21c" data-ofbid="usb_device_configuration__ol_yzc_mgz_21c">
<li class="- topic/li li" data-ofbid="d108303e187__20250123155209">Linux Kernel Kconfig 文件中，使能 <code class="+ topic/ph pr-d/codeph ph codeph">Mass storage</code> 类型的
<code class="+ topic/ph pr-d/codeph ph codeph">Gadget functions</code>
：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_yhh_3gz_21c" data-ofbid="usb_device_configuration__codeblock_yhh_3gz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support
&lt;*&gt; USB Gadget functions configurable through configfs
[*] Mass storage</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e198__20250123155209">Linux Kernel Kconfig
文件中，使能环回块设备：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_aqc_lgz_21c" data-ofbid="usb_device_configuration__codeblock_aqc_lgz_21c"><code>&gt; Device Drivers
&lt;*&gt; Loopback device support</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e203__20250123155209">Busybox 中使能 <code class="+ topic/ph pr-d/codeph ph codeph">losetup</code>
命令：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_psx_4gz_21c" data-ofbid="usb_device_configuration__codeblock_psx_4gz_21c"><code>&gt; Linux System Utilities
[*] losetup (<span class="hl-number">5.5</span> kb)</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e211__20250123155209">通过用户态的 configfs 文件接口创建包含 <code class="+ topic/ph pr-d/codeph ph codeph">Mass storage</code> 存储功能的 USB
Device<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_z33_qgz_21c" data-ofbid="usb_device_configuration__codeblock_z33_qgz_21c"><code>dd <strong class="hl-keyword">if</strong>=/dev/zero of=/tmp/mass.img bs=<span class="hl-number">128</span>K count=<span class="hl-number">132</span>
losetup /dev/loop0 /tmp/mass.img
mkdir /tmp/media
mkfs.vfat /dev/loop0
mount -t vfat /dev/loop0 /tmp/media/
cp /linuxrc /tmp/media
sync
mount -t configfs none /sys/kernel/config
cd /sys/kernel/config/usb_gadget
mkdir g_mass
cd g_mass
echo <span class="hl-string">"0x200"</span> &gt; bcdUSB
echo <span class="hl-string">"0x100"</span> &gt; bcdDevice
echo <span class="hl-string">"0x1234"</span> &gt; idVendor
echo <span class="hl-string">"0x5678"</span> &gt; idProduct
mkdir configs/c1.<span class="hl-number">1</span>
mkdir functions/mass_storage.<span class="hl-number">0</span>
echo /dev/loop0 &gt; functions/mass_storage.<span class="hl-number">0</span>/lun.<span class="hl-number">0</span>/file
mkdir strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"0123456789ABCDEF"</span> &gt; strings/<span class="hl-number">0x409</span>/serialnumber
echo <span class="hl-string">"river"</span> &gt; strings/<span class="hl-number">0x409</span>/manufacturer
echo <span class="hl-string">"river_msc"</span> &gt; strings/<span class="hl-number">0x409</span>/product
mkdir configs/c1.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"abc"</span> &gt; configs/c1.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>/configuration
ln -s functions/mass_storage.<span class="hl-number">0</span> configs/c1.<span class="hl-number">1</span>
echo `ls /sys/class/udc` &gt; UDC</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e219__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e221__20250123155209">将单板的 USB Device 端口和 Windows PC 的 USB Host 端口连接，在 Windows PC
上会看到一个新增的 U 盘，可以正常读写。</p>
</li>
</ol></li>
<li class="- topic/li li" data-ofbid="d108303e226__20250123155209">NCM 网口配置<ol class="- topic/ol ol" type="a" id="usb_device_configuration__ol_h3n_5gz_21c" data-ofbid="usb_device_configuration__ol_h3n_5gz_21c">
<li class="- topic/li li" data-ofbid="d108303e230__20250123155209">Linux Kernel Kconfig 文件中，使能 <code class="+ topic/ph pr-d/codeph ph codeph">CDC NCM</code> 类型的
<code class="+ topic/ph pr-d/codeph ph codeph">Gadget functions</code>
：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_j5c_wgz_21c" data-ofbid="usb_device_configuration__codeblock_j5c_wgz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support
&lt;*&gt; USB Gadget functions configurable through configfs
[*] Network Control Model (CDC NCM)</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e241__20250123155209">Linux Kernel Kconfig 文件中，使能 TCP/IP
支持：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_czf_wgz_21c" data-ofbid="usb_device_configuration__codeblock_czf_wgz_21c"><code>&gt; Networking support &gt; Networking options
[*] TCP/IP networking</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e246__20250123155209">通过用户态的 configfs 文件接口创建包含 <code class="+ topic/ph pr-d/codeph ph codeph">CDC NCM</code> 以太网功能的 USB
Device：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_bcm_xgz_21c" data-ofbid="usb_device_configuration__codeblock_bcm_xgz_21c"><code>mount -t configfs none /sys/kernel/config
cd /sys/kernel/config/usb_gadget
mkdir g_ncm
cd g_ncm
echo <span class="hl-string">"0xA55A"</span> &gt; idVendor
echo <span class="hl-string">"0x0111"</span> &gt; idProduct
mkdir strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"0123456789"</span> &gt; strings/<span class="hl-number">0x409</span>/serialnumber
echo <span class="hl-string">"Xyz Inc."</span> &gt; strings/<span class="hl-number">0x409</span>/manufacturer
echo <span class="hl-string">"NCM gadget"</span> &gt; strings/<span class="hl-number">0x409</span>/product
mkdir functions/ncm.usb0
mkdir configs/c.<span class="hl-number">1</span>
mkdir configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"NCM"</span> &gt; configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>/configuration
ln -s functions/ncm.usb0 configs/c.<span class="hl-number">1</span>
echo `ls /sys/class/udc` &gt; UDC
ifconfig usb0 up
ifconfig usb0 <span class="hl-number">173.11</span>.<span class="hl-number">1.1</span></code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e254__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e256__20250123155209">用户使用：</p>
<ol class="- topic/ol ol" type="i" id="usb_device_configuration__ol_uwl_zgz_21c" data-ofbid="usb_device_configuration__ol_uwl_zgz_21c">
<li class="- topic/li li" data-ofbid="d108303e261__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e263__20250123155209">将单板的 USB Device 端口和 Ubuntu PC 的 USB Host 端口连接，在 Ubuntu PC
会看到一个新的网络接口，名字随机，类似： <code class="+ topic/ph pr-d/codeph ph codeph">enx0afcc15d3417</code>
。</p>
</li>
<li class="- topic/li li" data-ofbid="d108303e270__20250123155209">
<p class="- topic/p p" data-ofbid="d108303e272__20250123155209">配置 Ubuntu PC 端的网口为同一网段地址， <code class="+ topic/ph pr-d/codeph ph codeph">sudo ifconfig
enx0afcc15d3417 173.11.1.2</code>。</p>
</li>
<li class="- topic/li li" data-ofbid="d108303e279__20250123155209">
<div class="- topic/p p" data-ofbid="d108303e281__20250123155209">两个网口相互可以 ping
通：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__pre_wwl_zgz_21c" data-ofbid="usb_device_configuration__pre_wwl_zgz_21c"><code>ping <span class="hl-number">173.11</span>.<span class="hl-number">1.1</span></code></pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_fvh_qyr_5dc" data-ofbid="usb_device_configuration__codeblock_fvh_qyr_5dc"><code>PING <span class="hl-number">173.11</span>.<span class="hl-number">1.1</span> (<span class="hl-number">173.11</span>.<span class="hl-number">1.1</span>) <span class="hl-number">56</span>(<span class="hl-number">84</span>) bytes of data.
<span class="hl-number">64</span> bytes from <span class="hl-number">173.11</span>.<span class="hl-number">1.1</span>: icmp_seq=<span class="hl-number">1</span> ttl=<span class="hl-number">64</span> time=<span class="hl-number">10.3</span> ms
<span class="hl-number">64</span> bytes from <span class="hl-number">173.11</span>.<span class="hl-number">1.1</span>: icmp_seq=<span class="hl-number">2</span> ttl=<span class="hl-number">64</span> time=<span class="hl-number">5.02</span> ms</code></pre></div>
</li>
</ol>
</li>
</ol></li>
<li class="- topic/li li" data-ofbid="d108303e292__20250123155209">ECM 网口 配置<ol class="- topic/ol ol" type="a" id="usb_device_configuration__ol_mss_1hz_21c" data-ofbid="usb_device_configuration__ol_mss_1hz_21c">
<li class="- topic/li li" data-ofbid="d108303e296__20250123155209">Linux Kernel Kconfig 文件中，使能 <code class="+ topic/ph pr-d/codeph ph codeph">CDC ECM</code> 类型的
<code class="+ topic/ph pr-d/codeph ph codeph">Gadget functions</code>
：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_n5h_bhz_21c" data-ofbid="usb_device_configuration__codeblock_n5h_bhz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support
&lt;*&gt; USB Gadget functions configurable through configfs
[*] Ethernet Control Model (CDC ECM)</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e307__20250123155209">Linux Kernel Kconfig 文件中，使能 TCP/IP
支持：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_vlq_chz_21c" data-ofbid="usb_device_configuration__codeblock_vlq_chz_21c"><code>&gt; Networking support &gt; Networking options
[*] TCP/IP networking</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e312__20250123155209">通过用户态的 configfs 文件接口创建包含 <code class="+ topic/ph pr-d/codeph ph codeph">CDC ECM</code> 以太网功能的 USB
Device：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_uyr_chz_21c" data-ofbid="usb_device_configuration__codeblock_uyr_chz_21c"><code>mount -t configfs none /sys/kernel/config
cd /sys/kernel/config/usb_gadget
mkdir g_ecm
cd g_ecm
echo <span class="hl-string">"0x1d6b"</span> &gt; idVendor
echo <span class="hl-string">"0x0104"</span> &gt; idProduct
mkdir strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"0123456789"</span> &gt; strings/<span class="hl-number">0x409</span>/serialnumber
echo <span class="hl-string">"AIC Inc."</span> &gt; strings/<span class="hl-number">0x409</span>/manufacturer
echo <span class="hl-string">"Bar Gadget"</span> &gt; strings/<span class="hl-number">0x409</span>/product
mkdir functions/ecm.usb0
mkdir configs/c.<span class="hl-number">1</span>
mkdir configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"ECM"</span> &gt; configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>/configuration
ln -s functions/ecm.usb0 configs/c.<span class="hl-number">1</span>
echo `ls /sys/class/udc` &gt; UDC
ifconfig usb0 up
ifconfig usb0 <span class="hl-number">173.11</span>.<span class="hl-number">1.1</span></code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e320__20250123155209">用户使用：和上一节 NCM 网口 一样。</li>
</ol></li>
<li class="- topic/li li" data-ofbid="d108303e324__20250123155209">ADBD 配置<ol class="- topic/ol ol" type="a" id="usb_device_configuration__ol_ngc_fhz_21c" data-ofbid="usb_device_configuration__ol_ngc_fhz_21c">
<li class="- topic/li li" data-ofbid="d108303e328__20250123155209">Linux Kernel Kconfig 文件中，使能 <code class="+ topic/ph pr-d/codeph ph codeph">FunctionFS</code> 类型的
<code class="+ topic/ph pr-d/codeph ph codeph">Gadget functions</code>
：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_nlt_fhz_21c" data-ofbid="usb_device_configuration__codeblock_nlt_fhz_21c"><code>&gt; Device Drivers &gt; USB support &gt; USB Gadget Support
&lt;*&gt; USB Gadget functions configurable through configfs
[*] Function filesystem (FunctionFS)</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e339__20250123155209">Linux Kernel Kconfig 文件中，使能 TCP/IP
支持：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_c3z_ghz_21c" data-ofbid="usb_device_configuration__codeblock_c3z_ghz_21c"><code>&gt; Networking support &gt; Networking options
[*] TCP/IP networking</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e344__20250123155209">通过用户态的 configfs 文件接口创建 <code class="+ topic/ph pr-d/codeph ph codeph">FunctionFS</code> 中的 USB Device，挂载完
FunctionFS 文件系统以后， <code class="+ topic/ph pr-d/codeph ph codeph">adbd</code> 通过
<code class="+ topic/ph pr-d/codeph ph codeph">/dev/usb-ffs/adb</code> 中映射成文件的 endpoint 直接和 USB Host
进行通讯：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="usb_device_configuration__codeblock_qcb_hhz_21c" data-ofbid="usb_device_configuration__codeblock_qcb_hhz_21c"><code>mkdir /dev/pts
mount -t devpts none /dev/pts
mount -t configfs none /sys/kernel/config
cd /sys/kernel/config/usb_gadget
mkdir g_adb
cd g_adb
echo <span class="hl-string">"0x18d1"</span> &gt; idVendor
echo <span class="hl-string">"0x4e26"</span> &gt; idProduct
mkdir configs/c.<span class="hl-number">1</span>
mkdir functions/ffs.adb
mkdir strings/<span class="hl-number">0x409</span>
mkdir configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>
echo <span class="hl-string">"0123456789ABCDEF"</span> &gt; strings/<span class="hl-number">0x409</span>/serialnumber
echo <span class="hl-string">"AIC Inc."</span> &gt; strings/<span class="hl-number">0x409</span>/manufacturer
echo <span class="hl-string">"FunctionFS gadget (adb)"</span> &gt; strings/<span class="hl-number">0x409</span>/product
echo <span class="hl-string">"Conf 1"</span> &gt; configs/c.<span class="hl-number">1</span>/strings/<span class="hl-number">0x409</span>/configuration
echo <span class="hl-number">120</span> &gt; configs/c.<span class="hl-number">1</span>/MaxPower
ln -s functions/ffs.adb configs/c.<span class="hl-number">1</span>
mkdir -p /dev/usb-ffs/adb
mount -o uid=<span class="hl-number">2000</span>,gid=<span class="hl-number">2000</span> -t functionfs adb /dev/usb-ffs/adb
ifconfig lo up
ifconfig
cd /root
adbd&amp;
sleep <span class="hl-number">1</span>
echo `ls /sys/class/udc/` &gt; /sys/kernel/config/usb_gadget/g_adb/UDC</code></pre></li>
<li class="- topic/li li" data-ofbid="d108303e358__20250123155209">将单板的 USB Device 端口和 PC 的 USB Host 端口连接，在 PC 端运行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">adb
shell</span> 命令即可进行 adb 操作。</li>
</ol></li>
</ol></div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#usb_device_configuration__section_lbt_13z_21c" data-tocid="usb_device_configuration__section_lbt_13z_21c">USB Device Controller 配置</a></div></li><li class="section-item"><div class="section-title"><a href="#usb_device_configuration__section_k5g_c3z_21c" data-tocid="usb_device_configuration__section_k5g_c3z_21c">USB Gadget 配置</a></div></li><li class="section-item"><div class="section-title"><a href="#usb_device_configuration__section_kdh_f3z_21c" data-tocid="usb_device_configuration__section_kdh_f3z_21c">USB Interface 配置</a></div></li></ul></div>
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