2025-04-23 17:54:31 +08:00
<!DOCTYPE html> < html xmlns = "http://www.w3.org/1999/xhtml" xml:lang = "zh-cn" lang = "zh-cn" data-whc_version = "26.1" >
2025-07-22 11:15:46 +08:00
< head > < meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" / > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" / > < meta http-equiv = "X-UA-Compatible" content = "IE=edge" / > < meta name = "description" content = "OTG 模式配置 OTG 可以配置成 Auto 模式 或者 Manual 模式 ： ， / > < meta name = "DC.rights.owner" content = "(C) 版权 2025" / > < meta name = "copyright" content = "(C) 版权 2025" / > < meta name = "generator" content = "DITA-OT" / > < meta name = "DC.type" content = "concept" / > < meta name = "DC.relation" content = "../../../topics/sdk/usb/usb_config.html" / > < meta name = "DC.relation" content = "../../../topics/sdk/usb/usb-device_configuration.html" / > < meta name = "DC.relation" content = "../../../topics/sdk/mac/mac_user_guide.html" / > < meta name = "DC.contributor" content = "yan.wang" / > < meta name = "DC.contributor" content = "yan.wang" / > < meta name = "DC.date.modified" content = "2025-05-16" / > < meta name = "DC.format" content = "HTML5" / > < meta name = "DC.identifier" content = "usb_otg_configuration" / > < meta name = "DC.language" content = "zh-CN" / > < title > USB OTG 配置< / title > <!-- Generated with build number 2025051600. --> < meta name = "wh-path2root" content = "../../../" / > < meta name = "wh-toc-id" content = "usb_otg_configuration-d3752e6701" / > < meta name = "wh-source-relpath" content = "topics/sdk/usb/usb-otg_configuration.dita" / > < meta name = "wh-out-relpath" content = "topics/sdk/usb/usb-otg_configuration.html" / >
2025-01-23 16:37:00 +08:00
2025-04-23 17:54:31 +08:00
< link rel = "stylesheet" type = "text/css" href = "../../../webhelp/app/commons.css?buildId=2024041900" / >
< link rel = "stylesheet" type = "text/css" href = "../../../webhelp/app/topic.css?buildId=2024041900" / >
2025-01-23 16:37:00 +08:00
2025-07-22 11:15:46 +08:00
< script src = "../../../webhelp/app/options/properties.js?buildId=20250519091401" > < / script >
2025-04-23 17:54:31 +08:00
< script src = "../../../webhelp/app/localization/strings.js?buildId=2024041900" > < / script >
2025-07-22 11:15:46 +08:00
< script src = "../../../webhelp/app/search/index/keywords.js?buildId=20250519091401" > < / script >
2025-04-23 17:54:31 +08:00
< script defer = "defer" src = "../../../webhelp/app/commons.js?buildId=2024041900" > < / script >
< script defer = "defer" src = "../../../webhelp/app/topic.js?buildId=2024041900" > < / script >
< link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-styles-web-internal.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/notes.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-common.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-images.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/footnote.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-highlight-changes.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/search-in-header.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/topic-body-list.css?buildId=2024041900" / > < / head >
2025-01-23 16:37:00 +08:00
< body id = "usb_otg_configuration" class = "wh_topic_page frmBody" >
< a href = "#wh_topic_body" class = "sr-only sr-only-focusable" >
跳转到主要内容
< / a >
< header class = "navbar navbar-default wh_header" >
< div class = "container-fluid" >
2025-04-23 17:54:31 +08:00
< div xmlns:whc = "http://www.oxygenxml.com/webhelp/components" class = "wh_header_flex_container navbar-nav navbar-expand-md navbar-dark" >
2025-01-23 16:37:00 +08:00
< div class = "wh_logo_and_publication_title_container" >
< div class = "wh_logo_and_publication_title" >
2025-04-23 17:54:31 +08:00
< a href = "https://www.artinchip.com" class = " wh_logo d-none d-sm-block " > < img src = "../../../company-logo.png" alt = " RTOS SDK 使用指南 SDK 指南文件 " / > < / a >
< div class = " wh_publication_title " > < a href = "../../../index.html" > < span class = "booktitle" > < span class = "ph mainbooktitle" > RTOS SDK 使用指南< / span > < span class = "ph booktitlealt" > SDK 指南文件< / span > < / span > < / a > < / div >
2025-01-23 16:37:00 +08:00
< / div >
< / div >
< div class = "wh_top_menu_and_indexterms_link collapse navbar-collapse" id = "wh_top_menu_and_indexterms_link" >
< / div >
< div class = " wh_search_input navbar-form wh_topic_page_search search " role = "form" >
< form id = "searchForm" method = "get" role = "search" action = "../../../search.html" > < div > < input type = "search" placeholder = "搜索 " class = "wh_search_textfield" id = "textToSearch" name = "searchQuery" aria-label = "搜索查询" required = "required" / > < button type = "submit" class = "wh_search_button" aria-label = "搜索" > < span class = "search_input_text" > 搜索< / span > < / button > < / div > < / form >
2025-04-23 17:54:31 +08:00
< / div > < / div >
< / div >
< / header >
2025-01-23 16:37:00 +08:00
< div class = "container-fluid" id = "wh_topic_container" >
< div class = "row" >
< nav class = "wh_tools d-print-none navbar-expand-md" aria-label = "Tools" >
2025-04-23 17:54:31 +08:00
< div data-tooltip-position = "bottom" class = " wh_breadcrumb " > < ol class = "d-print-none" > < li > < span class = "home" > < a href = "../../../index.html" > < span > 主页< / span > < / a > < / span > < / li > < li > < div class = "topicref" data-id = "id" > < div class = "title" > < a href = "../../../topics/sdk/chapter-advanced-app.html" > 高级应用< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。< / p > < / div > < / div > < / div > < / li > < li > < div class = "topicref" data-id = "concept_nww_hzh_pzb" > < div class = "title" > < a href = "../../../topics/chapter-title/chapter-interface-sdk.html" > 接口< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > CAN< span class = "ph" > 、CAP< / span > 、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。< / p > < / div > < / div > < / div > < / li > < li > < div class = "topicref" data-id = "usb_user_guide" > < div class = "title" > < a href = "../../../topics/sdk/usb/usb_user_guide.html" > USB 使用指南< / a > < / div > < / div > < / li > < li > < div class = "topicref" data-id = "usb_configuration" > < div class = "title" > < a href = "../../../topics/sdk/usb/usb_config.html" > USB 配置< / a > < / div > < / div > < / li > < li class = "active" > < div class = "topicref" data-id = "usb_otg_configuration" > < div class = "title" > < a href = "../../../topics/sdk/usb/usb-otg_configuration.html" > USB OTG 配置< / a > < / div > < / div > < / li > < / ol > < / div >
2025-01-23 16:37:00 +08:00
< div class = "wh_right_tools" >
< button class = "wh_hide_highlight" aria-label = "切换搜索突出显示" title = "切换搜索突出显示" > < / button >
< button class = "webhelp_expand_collapse_sections" data-next-state = "collapsed" aria-label = "折叠截面" title = "折叠截面" > < / button >
2025-04-23 17:54:31 +08:00
< div class = " wh_navigation_links " > < span id = "topic_navigation_links" class = "navheader" >
< span class = "navprev" > < a class = "- topic/link link" href = "../../../topics/sdk/usb/usb-device_configuration.html" title = "USB Device 配置" aria-label = "上一主题: USB Device 配置" rel = "prev" > < / a > < / span >
< span class = "navnext" > < a class = "- topic/link link" href = "../../../topics/sdk/mac/mac_user_guide.html" title = "MAC 使用指南" aria-label = "下一主题: MAC 使用指南" rel = "next" > < / a > < / span > < / span > < / div >
2025-01-23 16:37:00 +08:00
< div class = " wh_print_link print d-none d-md-inline-block " > < button onClick = "window.print()" title = "打印此页" aria-label = "打印此页" > < / button > < / div >
2025-04-23 17:54:31 +08:00
< button type = "button" id = "wh_toc_button" class = "custom-toggler navbar-toggler collapsed wh_toggle_button navbar-light" aria-expanded = "false" aria-label = "Toggle publishing table of content" aria-controls = "wh_publication_toc" >
< span class = "navbar-toggler-icon" > < / span >
< / button >
2025-01-23 16:37:00 +08:00
< / div >
< / nav >
< / div >
< div class = "wh_content_area" >
< div class = "row" >
2025-04-23 17:54:31 +08:00
< nav id = "wh_publication_toc" class = "col-lg-3 col-md-3 col-sm-12 d-md-block d-none d-print-none" aria-label = "Table of Contents Container" >
< div id = "wh_publication_toc_content" >
2025-07-22 11:15:46 +08:00
< div class = " wh_publication_toc " data-tooltip-position = "right" > < span class = "expand-button-action-labels" > < span id = "button-expand-action" role = "button" aria-label = "Expand" > < / span > < span id = "button-collapse-action" role = "button" aria-label = "Collapse" > < / span > < span id = "button-pending-action" role = "button" aria-label = "Pending" > < / span > < / span > < ul role = "tree" aria-label = "Table of Contents" > < li role = "treeitem" > < div data-tocid = "revinfo_linux-d3752e463" class = "topicref" data-id = "revinfo_linux" data-state = "leaf" > < span role = "button" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/revinfo/revinfo_rtos.html" id = "revinfo_linux-d3752e463-link" > 修订记录< / a > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e480" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e480-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/env/sdk-compile.html" id = "id-d3752e480-link" > SDK 编译< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 介绍不同编译环境下 SDK 的详细编译流程。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e604" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e604-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/advanced/sdk-usage.html" id = "id-d3752e604-link" > 使用指南< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 命令详解，编译选项，镜像和分区配置，添加应用和驱动等的详细使用说明。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "concept_rcx_czh_pzb-d3752e1004" class = "topicref" data-id = "concept_rcx_czh_pzb" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action concept_rcx_czh_pzb-d3752e1004-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/chapter-app.html" id = "concept_rcx_czh_pzb-d3752e1004-link" > 应用场景< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 描述了 SDK 在不同应用场景中的配置和使用， < / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e1848" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e1848-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/peripheral/peripheral-intro.html" id = "id-d3752e1848-link" > 外设移植< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > < span class = "ph" > CTP、U 盘、SD 卡、有线和无线网络< / span > 等外设的介绍和使用说明。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e2022" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e2022-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/bringup/chapter-bringup.html" id = "id-d3752e2022-link" > BringUp< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 主要描述板卡的各项配置，使 SDK 的环境和板卡匹配，并确保 SDK 编译后的固件能够在板子上正常运行。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "true" > < div data-tocid = "id-d3752e2418" class = "topicref" data-id = "id" data-state = "expanded" > < span role = "button" tabindex = "0" aria-labelledby = "button-collapse-action id-d3752e2418-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/chapter-advanced-app.html" id = "id-d3752e2418-link" > 高级应用< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。< / p > < / div > < / div > < / div > < ul role = "group" class = "navbar-nav nav-list" > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "_0-d3752e2435" class
2025-04-23 17:54:31 +08:00
< / div >
< / nav >
2025-01-23 16:37:00 +08:00
2025-04-23 17:54:31 +08:00
< div class = "col-lg-7 col-md-9 col-sm-12" id = "wh_topic_body" >
< button id = "wh_close_publication_toc_button" class = "close-toc-button d-none" aria-label = "Toggle publishing table of content" aria-controls = "wh_publication_toc" aria-expanded = "true" >
< span class = "close-toc-icon-container" >
< span class = "close-toc-icon" > < / span >
< / span >
< / button >
2025-01-23 16:37:00 +08:00
< button id = "wh_close_topic_toc_button" class = "close-toc-button d-none" aria-label = "Toggle topic table of content" aria-controls = "wh_topic_toc" aria-expanded = "true" >
< span class = "close-toc-icon-container" >
< span class = "close-toc-icon" > < / span >
< / span >
< / button >
2025-04-23 17:54:31 +08:00
< 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://aicdocco/taskstopics/sdk/usb/usb-otg_configuration.dita" > Edit online< / a > < / span > < h1 class = "- topic/title title topictitle1" id = "ariaid-title1" > USB OTG 配置< / h1 >
2025-07-22 11:15:46 +08:00
< div class = "date inPage" > 16 May 2025< / div > < div style = "color: gray;" >
2025-01-23 16:37:00 +08:00
Read time: 4 minute(s)
2025-04-23 17:54:31 +08:00
< / div >
< div class = "- topic/body concept/conbody body conbody" >
< section class = "- topic/section section" id = "usb_otg_configuration__section_kvg_l3z_21c" data-ofbid = "usb_otg_configuration__section_kvg_l3z_21c" > < h2 class = "- topic/title title sectiontitle" > OTG 模式配置< / h2 >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d141705e37__20250519091520" > OTG 可以配置成 < code class = "+ topic/ph pr-d/codeph ph codeph" > Auto 模式< / code > 或者 < code class = "+ topic/ph pr-d/codeph ph codeph" > Manual< / code > 模式 ： < ul class = "- topic/ul ul" id = "usb_otg_configuration__ul_k4r_hdz_21c" data-ofbid = "usb_otg_configuration__ul_k4r_hdz_21c" >
< li class = "- topic/li li" data-ofbid = "d141705e47__20250519091520" >
< p class = "- topic/p p" data-ofbid = "d141705e49__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > Auto 模式< / code > 。根据 < span class = "- topic/ph ph" > id-pin GPIO< / span > 管脚的电平来决定当前 OTG 端口工作模式为
2025-01-23 16:37:00 +08:00
< code class = "+ topic/ph pr-d/codeph ph codeph" > Host< / code > / < code class = "+ topic/ph pr-d/codeph ph codeph" > Device< / code > 。< / p >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d141705e63__20250519091520" > 配置 OTG 为 Auto 模式时，
2025-01-23 16:37:00 +08:00
的名称和极性。相关 menuconfig
配置：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_thv_sv3_zbc" data-ofbid = "usb_otg_configuration__codeblock_thv_sv3_zbc" > > Local packages options
> Third-party packages options
[*] CherryUSB: tiny and portable USB host/device stack < strong class = "hl-keyword" > for< / strong > embedded system with USB IP --->
[*] Enable usb otg mode --->
Select otg < strong class = "hl-keyword" > switch< / strong > (Auto (Id pin detect)) --->
-*- Using id-pin gpio --->
(PF.< span class = "hl-number" > 15< / span > ) GPIO name
Select GPIO polarity (Input value: < span class = "hl-number" > 0< / span > = Host, < span class = "hl-number" > 1< / span > = Device) ---> < / pre > < / div >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d141705e69__20250519091520" > OTG 工作在 Manual 模式时，由用户手工来切换 Host/Device 模式。相关
2025-01-23 16:37:00 +08:00
menuconfig
配置：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_ujz_5v3_zbc" data-ofbid = "usb_otg_configuration__codeblock_ujz_5v3_zbc" > > Local packages options
> Third-party packages options
[*] CherryUSB: tiny and portable USB host/device stack < strong class = "hl-keyword" > for< / strong > embedded system with USB IP --->
[*] Enable usb otg mode --->
Select otg < strong class = "hl-keyword" > switch< / strong > (Manual) --->
2025-07-22 11:15:46 +08:00
Select < strong class = "hl-keyword" > default< / strong > mode (Device) ---> < / pre > < div class = "- topic/p p" data-ofbid = "d141705e73__20250519091520" > 手工切换
2025-01-23 16:37:00 +08:00
Host/Device 模式的命令为
2025-04-23 17:54:31 +08:00
< span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > set_otg_mode< / span > ： < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_d31_wv3_zbc" data-ofbid = "usb_otg_configuration__codeblock_d31_wv3_zbc" > set_otg_mode host< / pre > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_jr4_3lk_5dc" data-ofbid = "usb_otg_configuration__codeblock_jr4_3lk_5dc" > Usb otg < strong class = "hl-keyword" > auto< / strong > mode (< strong class = "hl-keyword" > switch< / strong > usb0 to host).< / pre > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_tz5_3lk_5dc" data-ofbid = "usb_otg_configuration__codeblock_tz5_3lk_5dc" > set_otg_mode device< / pre > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_hc1_jlk_5dc" data-ofbid = "usb_otg_configuration__codeblock_hc1_jlk_5dc" > Usb otg manual mode (< strong class = "hl-keyword" > switch< / strong > usb0 to device).< / pre > < / div > < / li >
< / ul > < / div > 两种模式对应 DTS 文件中的 < code class = "+ topic/ph pr-d/codeph ph codeph" > otg< / code > 节点的不同配置：< div class = "table-container" > < table class = "- topic/table table frame-all" id = "usb_otg_configuration__table_l4r_hdz_21c" data-ofbid = "usb_otg_configuration__table_l4r_hdz_21c" data-cols = "4" > < caption > < / caption > < colgroup > < col style = "width:13.755158184319122%" / > < col style = "width:27.097661623108664%" / > < col style = "width:25.722145804676757%" / > < col style = "width:33.425034387895465%" / > < / colgroup > < thead class = "- topic/thead thead" >
< tr class = "- topic/row" >
2025-07-22 11:15:46 +08:00
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "usb_otg_configuration__table_l4r_hdz_21c__entry__1" > < p class = "- topic/p p" data-ofbid = "d141705e108__20250519091520" > Mode< / p > < / th >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "usb_otg_configuration__table_l4r_hdz_21c__entry__2" > < p class = "- topic/p p" data-ofbid = "d141705e112__20250519091520" > DTS < code class = "+ topic/ph pr-d/codeph ph codeph" > otg-mode< / code > 属性< / p > < / th >
< th class = "- topic/entry entry colsep-1 rowsep-1" id = "usb_otg_configuration__table_l4r_hdz_21c__entry__3" > < p class = "- topic/p p" data-ofbid = "d141705e119__20250519091520" > DTS < code class = "+ topic/ph pr-d/codeph ph codeph" > xxx-gpios< / code > 属性< / p > < / th >
< th class = "- topic/entry entry colsep-0 rowsep-1" id = "usb_otg_configuration__table_l4r_hdz_21c__entry__4" > < p class = "- topic/p p" data-ofbid = "d141705e126__20250519091520" > 运行时 < code class = "+ topic/ph pr-d/codeph ph codeph" > Host< / code > / < code class = "+ topic/ph pr-d/codeph ph codeph" > Device< / code > 切换方法< / p > < / th >
2025-04-23 17:54:31 +08:00
< / tr >
< / thead > < tbody class = "- topic/tbody tbody" >
< tr class = "- topic/row" >
2025-07-22 11:15:46 +08:00
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__1" > < p class = "- topic/p p" data-ofbid = "d141705e143__20250519091520" > Auto< / p > < / td >
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__2" > < p class = "- topic/p p" data-ofbid = "d141705e147__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > otg-mode = "auto";< / code > (如果没有配置
2025-04-23 17:54:31 +08:00
< code class = "+ topic/ph pr-d/codeph ph codeph" > otg-mode< / code > 属性, 默认也是 Auto 模式)< / p > < / td >
2025-07-22 11:15:46 +08:00
< td class = "- topic/entry entry colsep-1 rowsep-1" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__3" > < p class = "- topic/p p" data-ofbid = "d141705e156__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > id-gpios< / code > 属性必须配置。 < code class = "+ topic/ph pr-d/codeph ph codeph" > vbus-en-gpios< / code >
2025-04-23 17:54:31 +08:00
和 < code class = "+ topic/ph pr-d/codeph ph codeph" > dp-sw-gpios< / code > 属性根据硬件配置选配。< / p > < / td >
2025-07-22 11:15:46 +08:00
< td class = "- topic/entry entry colsep-0 rowsep-1" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__4" > < p class = "- topic/p p" data-ofbid = "d141705e168__20250519091520" > OTG 驱动根据 < code class = "+ topic/ph pr-d/codeph ph codeph" > id-gpios< / code > 管脚的电平变化 自动切换 USB 工作模式为
2025-04-23 17:54:31 +08:00
< code class = "+ topic/ph pr-d/codeph ph codeph" > Host< / code > / < code class = "+ topic/ph pr-d/codeph ph codeph" > Device< / code > 。< / p > < / td >
< / tr >
< tr class = "- topic/row" >
2025-07-22 11:15:46 +08:00
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__1" > < p class = "- topic/p p" data-ofbid = "d141705e184__20250519091520" > Force< / p > < / td >
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__2" > < p class = "- topic/p p" data-ofbid = "d141705e188__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > otg-mode = "device";< / code > 或者 < code class = "+ topic/ph pr-d/codeph ph codeph" > otg-mode =
2025-04-23 17:54:31 +08:00
"host";< / code > < / p > < / td >
2025-07-22 11:15:46 +08:00
< td class = "- topic/entry entry colsep-1 rowsep-0" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__3" > < p class = "- topic/p p" data-ofbid = "d141705e196__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > id-gpios< / code > 属性不需要配置。 < code class = "+ topic/ph pr-d/codeph ph codeph" > vbus-en-gpios< / code >
2025-04-23 17:54:31 +08:00
和 < code class = "+ topic/ph pr-d/codeph ph codeph" > dp-sw-gpios< / code > 属性根据硬件配置选配。< / p > < / td >
2025-07-22 11:15:46 +08:00
< td class = "- topic/entry entry colsep-0 rowsep-0" headers = "usb_otg_configuration__table_l4r_hdz_21c__entry__4" > < p class = "- topic/p p" data-ofbid = "d141705e208__20250519091520" > 需要配置文件节点来手工切换： < code class = "+ topic/ph pr-d/codeph ph codeph" > echo devices >
2025-01-23 16:37:00 +08:00
/sys/devices/platform/soc/soc\:usb-otg/otg_mode< / code > 或者
< code class = "+ topic/ph pr-d/codeph ph codeph" > echo host >
2025-04-23 17:54:31 +08:00
/sys/devices/platform/soc/soc\:usb-otg/otg_mode< / code > < / p > < / td >
< / tr >
< / tbody > < / table > < / div >
< / section >
< section class = "- topic/section section" id = "usb_otg_configuration__section_m4r_hdz_21c" data-ofbid = "usb_otg_configuration__section_m4r_hdz_21c" > < h2 class = "- topic/title title sectiontitle" > OTG 相关 GPIO< / h2 >
2025-01-23 16:37:00 +08:00
2025-07-22 11:15:46 +08:00
< p class = "- topic/p p" data-ofbid = "d141705e226__20250519091520" > 从上面配置可以看到和 OTG 功能相关的 GPIO 管脚有 3 个：< / p >
2025-04-23 17:54:31 +08:00
< ul class = "- topic/ul ul" id = "usb_otg_configuration__ul_n4r_hdz_21c" data-ofbid = "usb_otg_configuration__ul_n4r_hdz_21c" >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d141705e231__20250519091520" >
< p class = "- topic/p p" data-ofbid = "d141705e233__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > id-gpios< / code > 。用来检测当前插入的是不是 OTG 线，如果为 OTG 线则需要把本机切换到 USB Host
2025-01-23 16:37:00 +08:00
模式，否则本机切换到 USB Device 模式。该管脚在 < code class = "+ topic/ph pr-d/codeph ph codeph" > Auto 模式< / code > 模式下是必须配置的，如果缺少该管脚 OTG
只能工作在 < code class = "+ topic/ph pr-d/codeph ph codeph" > Manual< / code > 模式手工进行切换。< / p >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d141705e245__20250519091520" >
< p class = "- topic/p p" data-ofbid = "d141705e247__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > vbus-en-gpios< / code > 。该管脚是用来控制 VBUS 的 5V 输出的，通常情况下：切换到 USB Host
2025-01-23 16:37:00 +08:00
模式时需要使能本机端的 VBUS 5V 输出给对端 Device 供电，切换到 USB Device 模式时需要关闭本机端的 VBUS 5V
输出转而对端 Host 的供电。（实际使用上来说，不论本端是 Host/Device 模式，也可以在 VBUS 上一直供电 5V 两边 VBUS
无压差则无漏电，这种情况下 < code class = "+ topic/ph pr-d/codeph ph codeph" > vbus-en-gpios< / code > 无需配置。）< / p >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d141705e256__20250519091520" >
< p class = "- topic/p p" data-ofbid = "d141705e258__20250519091520" > < code class = "+ topic/ph pr-d/codeph ph codeph" > dp-sw-gpios< / code > 。该管脚是在 OTG 外出两个独立 Host、Device 端口时，用来控制外部 Switch
2025-01-23 16:37:00 +08:00
的。非该模式时， < code class = "+ topic/ph pr-d/codeph ph codeph" > dp-sw-gpios< / code > 无需配置。< / p >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d141705e266__20250519091520" > < br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "usb_otg_configuration__image_p4r_hdz_21c" src = "../../../images/usb/otg_gpio.png" alt = "image2" / > < / div > < br / > < / div >
2025-04-23 17:54:31 +08:00
< / li >
< / ul >
2025-07-22 11:15:46 +08:00
< p class = "- topic/p p" data-ofbid = "d141705e275__20250519091520" > 3 个 GPIO 管脚的具体使用场景如上图所示，用户根据自己的使用场景来选择配置哪些 GPIO。每个 GPIO 的 输入输出正反电平有效，可以通过 < span class = "- topic/ph ph" > menuconfig 菜单中的 < code class = "+ topic/ph pr-d/codeph ph codeph" > GPIO polarity< / code > 选项来配置。< / span > ： < / p >
2025-01-23 16:37:00 +08:00
2025-04-23 17:54:31 +08:00
< / section >
< section class = "- topic/section section" id = "usb_otg_configuration__section_cls_hw3_zbc" data-ofbid = "usb_otg_configuration__section_cls_hw3_zbc" > < h2 class = "- topic/title title sectiontitle" > USB Host/Device 配置< / h2 >
2025-01-23 16:37:00 +08:00
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d141705e290__20250519091520" > 在 OTG 模式下 CherryUSB 的 Device Mode 和 Host Mode 都必须使能，并且需要配置上相应应用。下图实例使能了 Host U 盘 和
2025-01-23 16:37:00 +08:00
Device MSC RAM disk
设备：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "usb_otg_configuration__codeblock_ab3_3w3_zbc" data-ofbid = "usb_otg_configuration__codeblock_ab3_3w3_zbc" > Local packages options
> Third-party packages options
[*] CherryUSB: tiny and portable USB host/device stack < strong class = "hl-keyword" > for< / strong > embedded system with USB IP --->
[*] Enable usb otg mode --->
[*] Enable usb device mode --->
[*] Enable usb msc device --->
Use ram or storage template (msc ram) --->
[*] Enable usb host mode --->
[*] Enable usb msc driver --->
[*] Use msc template< / pre > < / div >
2025-04-23 17:54:31 +08:00
< / section >
< / div >
< / article > < / main > < / div >
2025-01-23 16:37:00 +08:00
< / div >
< nav role = "navigation" id = "wh_topic_toc" aria-label = "On this page" class = "col-lg-2 d-none d-lg-block navbar d-print-none" >
< div id = "wh_topic_toc_content" >
< 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_otg_configuration__section_kvg_l3z_21c" data-tocid = "usb_otg_configuration__section_kvg_l3z_21c" > OTG 模式配置< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#usb_otg_configuration__section_m4r_hdz_21c" data-tocid = "usb_otg_configuration__section_m4r_hdz_21c" > OTG 相关 GPIO< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#usb_otg_configuration__section_cls_hw3_zbc" data-tocid = "usb_otg_configuration__section_cls_hw3_zbc" > USB Host/Device 配置< / a > < / div > < / li > < / ul > < / div >
< / div >
< / nav >
< / div >
< / div >
< / div >
< footer class = "navbar navbar-default wh_footer" >
< div class = " footer-container mx-auto " >
< title > footer def< / title >
2025-04-23 17:54:31 +08:00
< style >
2025-01-23 16:37:00 +08:00
.p1 {
font-family: FangZhengShuSong, Times, serif;
}
.p2 {
font-family: Arial, Helvetica, sans-serif;
}
.p3 {
font-family: "Lucida Console", "Courier New", monospace;
}
2025-04-23 17:54:31 +08:00
< / style >
2025-01-23 16:37:00 +08:00
< div class = "webhelp.fragment.footer" >
2025-04-23 17:54:31 +08:00
< p class = "p1" > Copyright © 2019-2025 广东匠芯创科技有限公司. All rights reserved.< / p >
< / div >
< div >
2025-01-23 16:37:00 +08:00
< div class = "generation_time" >
2025-07-22 11:15:46 +08:00
Update Time: 2025-05-19
2025-01-23 16:37:00 +08:00
< / div >
2025-04-23 17:54:31 +08:00
< / div >
2025-01-23 16:37:00 +08:00
< / div >
< / footer >
< div id = "go2top" class = "d-print-none" >
< span class = "oxy-icon oxy-icon-up" > < / span >
< / div >
< div id = "modal_img_large" class = "modal" >
< span class = "close oxy-icon oxy-icon-remove" > < / span >
< div id = "modal_img_container" > < / div >
< div id = "caption" > < / div >
< / div >
< script src = "${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer = "defer" > < / script >
< / body >
< / html >
