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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" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/usb/usb-device-interface_design.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">接口设计</h1><div class="date inPage">24 Jan 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><div class="table-container"><table class="- topic/table table frame-all" id="usb_device_interface_design__table_lnm_vmz_21c" data-ofbid="usb_device_interface_design__table_lnm_vmz_21c" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aic_ep_queue_request</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="usb_device_interface_design__table_lnm_vmz_21c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="usb_device_interface_design__table_lnm_vmz_21c__entry__2">int aic_ep_queue_request(struct usb_ep *ep, struct usb_request *req,
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gfp_t gfp_flags)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__2">接收上层传入的 request，并将其配置到 ep 寄存器中。</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__2">
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<p class="- topic/p p" data-ofbid="d247781e45__20250121171701">ep：当前 ep 控制结构</p>
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<p class="- topic/p p" data-ofbid="d247781e48__20250121171701">req：当前 request 控制结构</p>
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<p class="- topic/p p" data-ofbid="d247781e51__20250121171701">gfp_flags：分配内存时使用的标志</p>
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__2">0，成功。 < 0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="usb_device_interface_design__table_lnm_vmz_21c__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="usb_device_interface_design__table_mnm_vmz_21c" data-ofbid="usb_device_interface_design__table_mnm_vmz_21c" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aic_ep0_process_control</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="usb_device_interface_design__table_mnm_vmz_21c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="usb_device_interface_design__table_mnm_vmz_21c__entry__2">void aic_ep0_process_control(struct aic_usb_gadget *gg, struct
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usb_ctrlrequest *ctrl)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__2">处理 ep0 接收到的 control 数据包。</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__2">
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<p class="- topic/p p" data-ofbid="d247781e87__20250121171701">gg：当前 gadget 控制结构</p>
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<p class="- topic/p p" data-ofbid="d247781e90__20250121171701">ctrl：当前 control 数据包</p>
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__2">0，成功。 < 0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="usb_device_interface_design__table_mnm_vmz_21c__entry__2">-</td></tr></tbody></table></div></div></article></main></div>
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