267 lines
33 KiB
HTML
267 lines
33 KiB
HTML
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="27.0">
|
||
<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="I2C 包括以下配置内容： 内核配置 master 驱动使能 Device Drivers I2C support---> <*> I2C support <*> I2C device interface I2C Hardware Bus support---> <*> ArtInChip I2C support slave 驱动使能 Device Drivers I2C support---> ..."/><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/i2c/i2c_user_guide.html"/><meta name="DC.relation" content="../../../topics/sdk/i2c/i2c_user_guide.html"/><meta name="DC.relation" content="../../../topics/sdk/i2c/i2c_debug.html"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.date.modified" content="2024-01-15"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="i2c_configuration"/><meta name="DC.language" content="zh-CN"/><title>I2C 配置</title><!-- Generated with build number 2024112209. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content="i2c_configuration-d4445e6302"/><meta name="wh-source-relpath" content="topics/sdk/i2c/i2c_config.dita"/><meta name="wh-out-relpath" content="topics/sdk/i2c/i2c_config.html"/>
|
||
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/commons.css?buildId=2024112209"/>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/topic.css?buildId=2024112209"/>
|
||
|
||
<script src="../../../webhelp/app/options/properties.js?buildId=20250123154945"></script>
|
||
<script src="../../../webhelp/app/localization/strings.js?buildId=2024112209"></script>
|
||
<script src="../../../webhelp/app/search/index/keywords.js?buildId=20250123154945"></script>
|
||
<script defer="defer" src="../../../webhelp/app/commons.js?buildId=2024112209"></script>
|
||
<script defer="defer" src="../../../webhelp/app/topic.js?buildId=2024112209"></script>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-styles-web.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/notes.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-common.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-images.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/footnote.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-web-watermark.css?buildId=2024112209"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/topic-body-list.css?buildId=2024112209"/></head>
|
||
|
||
<body id="i2c_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">
|
||
<div class="wh_header_flex_container navbar-nav navbar-expand-md navbar-dark">
|
||
<div class="wh_logo_and_publication_title_container">
|
||
<div class="wh_logo_and_publication_title">
|
||
|
||
<a href="http://www.artinchip.com" class=" wh_logo d-none d-sm-block "><img src="../../../company-logo-white.png" alt=" Linux 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">Linux SDK 使用指南</span> <span class="ph booktitlealt">SDK 指南文件</span> </span></a></div>
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
<div class="wh_top_menu_and_indexterms_link collapse navbar-collapse" id="wh_top_menu_and_indexterms_link">
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</header>
|
||
|
||
|
||
|
||
|
||
<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>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
<div class="container-fluid" id="wh_topic_container">
|
||
<div class="row">
|
||
|
||
<nav class="wh_tools d-print-none navbar-expand-md" aria-label="Tools">
|
||
|
||
<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、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="i2c_user_guide"><div class="title"><a href="../../../topics/sdk/i2c/i2c_user_guide.html">I2C 使用指南</a></div></div></li><li class="active"><div class="topicref" data-id="i2c_configuration"><div class="title"><a href="../../../topics/sdk/i2c/i2c_config.html">I2C 配置</a></div></div></li></ol></div>
|
||
|
||
|
||
|
||
<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>
|
||
<div class=" wh_navigation_links "><span id="topic_navigation_links" class="navheader">
|
||
|
||
<span class="navprev"><a class="- topic/link link" href="../../../topics/sdk/i2c/i2c_user_guide.html" title="I2C 使用指南" aria-label="上一主题: I2C 使用指南" rel="prev"></a></span>
|
||
<span class="navnext"><a class="- topic/link link" href="../../../topics/sdk/i2c/i2c_debug.html" title="调试指南" aria-label="下一主题: 调试指南" rel="next"></a></span> </span></div>
|
||
|
||
|
||
|
||
<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>
|
||
|
||
<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>
|
||
</div>
|
||
|
||
</nav>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
<div class="wh_content_area">
|
||
<div class="row">
|
||
|
||
<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">
|
||
|
||
<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-d4445e1079" 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_linux.html" id="revinfo_linux-d4445e1079-link">修订记录</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e1096" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e1096-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/env/sdk-compile.html" id="id-d4445e1096-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="tocId-d4445e1240" class="topicref" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action tocId-d4445e1240-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/lb_usage_commands.html" id="tocId-d4445e1240-link">使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_rcx_czh_pzb-d4445e1360" 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-d4445e1360-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-app.html" id="concept_rcx_czh_pzb-d4445e1360-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，包括系统更新、OTA、安全方案等。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e1678" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e1678-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/peripheral/peripheral-intro.html" id="id-d4445e1678-link">外设移植</a><div class="wh-tooltip"><p class="shortdesc"><span class="ph">触摸屏、显示器、WIFI 模块、按键</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-d4445e1964" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e1964-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/chapter-bringup.html" id="id-d4445e1964-link">BringUp</a><div class="wh-tooltip"><p class="shortdesc">在硬件上电后快速初始化系统，为操作系统的启动准备好必要的硬件环境。</p></div></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="id-d4445e2153" class="topicref" data-id="id" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action id-d4445e2153-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html" id="id-d4445e2153-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="uBoot-d4445e2170" class="topicref" data-id="uBoot" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action uBoot-d4445e2170-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/uboot-module.html" id="uBoot-d4445e2170-link">U-Boot</a><div class="wh-tooltip"><p class="shortdesc">启动支持的基本功能以及运行时的基本硬件环境。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_mtx_tk3_pzb-d4445e3028" class="topicref" data-id="concept_mtx_tk3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_mtx_tk3_pzb-d4445e3028-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/linux/chapter_linux.html" id="concept_mtx_tk3_pzb-d4445e3028-link">Linux</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-system-d4445e3198" class="topicref" data-id="chapter-system" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-system-d4445e3198-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-system.html" id="chapter-system-d4445e3198-link">系统</a><div class="wh-tooltip"><p class="shortdesc"></p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-memory-d4445e4054" class="topicref" data-id="chapter-memory" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-memory-d4445e4054-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-memory-sdk.html" id="chapter-memory-d4445e4054-link">存储</a><div class="wh-tooltip"><p class="shortdesc">SDMC、SPI NAND、SPI NOR 等存储模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_mcc_32s_nbc-d4445e4438" class="topicref" data-id="concept_mcc_32s_nbc" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_mcc_32s_nbc-d4445e4438-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html" id="concept_mcc_32s_nbc-d4445e4438-link">多媒体</a><div class="wh-tooltip"><p class="shortdesc">GE、VE、Display、DVP、MPP、MPP 播放器等多媒体模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="concept_nww_hzh_pzb-d4445e5947" class="topicref" data-id="concept_nww_hzh_pzb" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action concept_nww_hzh_pzb-d4445e5947-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d4445e5947-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="can-d4445e5964" class="topicref" data-id="can" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action can-d4445e5964-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/can/can_user_guide.html" id="can-d4445e5964-link">CAN 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="cir-d4445e6020" class="topicref" data-id="cir" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action cir-d4445e6020-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/cir/cir_user_guide.html" id="cir-d4445e6020-link">CIR 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="gpai-user-guide-d4445e6146" class="topicref" data-id="gpai-user-guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action gpai-user-guide-d4445e6146-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/gpai/gpai_user_guide.html" id="gpai-user-guide-d4445e6146-link">GPAI 使用指南</a></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="i2c_user_guide-d4445e6288" class="topicref" data-id="i2c_user_guide" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action i2c_user_guide-d4445e6288-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2c/i2c_user_guide.html" id="i2c_user_guide-d4445e6288-link">I2C 使用指南</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" class="active"><div data-tocid="i2c_configuration-d4445e6302" class="topicref" data-id="i2c_configuration" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2c/i2c_config.html" id="i2c_configuration-d4445e6302-link">I2C 配置</a></div></div></li><li role="treeitem"><div data-tocid="i2c_debug_guide-d4445e6316" class="topicref" data-id="i2c_debug_guide" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2c/i2c_debug.html" id="i2c_debug_guide-d4445e6316-link">调试指南</a></div></div></li><li role="treeitem"><div data-tocid="i2c_test_guide-d4445e6330" class="topicref" data-id="i2c_test_guide" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2c/i2c_test.html" id="i2c_test_guide-d4445e6330-link">测试指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="i2c_design_intro-d4445e6344" class="topicref" data-id="i2c_design_intro" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action i2c_design_intro-d4445e6344-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2c/i2c_design.html" id="i2c_design_intro-d4445e6344-link">设计说明</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e6400" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e6400-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mac/mac_user_guide.html" id="id-d4445e6400-link">MAC 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="pbus_user_guide-d4445e6514" class="topicref" data-id="pbus_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action pbus_user_guide-d4445e6514-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/pbus/pbus-user-guide.html" id="pbus_user_guide-d4445e6514-link">PBUS 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="pinctrl_user_guide-d4445e6598" class="topicref" data-id="pinctrl_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action pinctrl_user_guide-d4445e6598-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/pinctrl/pinctrl-user-guide.html" id="pinctrl_user_guide-d4445e6598-link">PINCTRL 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e6738" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e6738-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/pwm/pwm_user_guide.html" id="id-d4445e6738-link">PWM 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="rtp-user-guide-d4445e6822" class="topicref" data-id="rtp-user-guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action rtp-user-guide-d4445e6822-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtp/rtp_user_guide.html" id="rtp-user-guide-d4445e6822-link">RTP 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="spi-d4445e6962" class="topicref" data-id="spi" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action spi-d4445e6962-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/spi/spi_user_guide.html" id="spi-d4445e6962-link">SPI 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d4445e7075" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d4445e7075-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/psadc/psadc_user_guide.html" id="id-d4445e7075-link">PSADC 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="uart_user_guide-d4445e7215" class="topicref" data-id="uart_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action uart_user_guide-d4445e7215-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/uart/uart_user_guide.html" id="uart_user_guide-d4445e7215-link">UART 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="usb_user_guide-d4445e7299" class="topicref" data-id="usb_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action usb_user_guide-d4445e7299-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/usb/usb_user_guide.html" id="usb_user_guide-d4445e7299-link">USB 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d4445e7944" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d4445e7944-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d4445e7944-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
|
||
|
||
</div>
|
||
</nav>
|
||
|
||
|
||
<div class="col-lg-9 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>
|
||
|
||
|
||
<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/i2c/i2c_config.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">I2C 配置</h1>
|
||
|
||
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 2 minute(s)
|
||
</div>
|
||
<div class="- topic/body concept/conbody body conbody">
|
||
<div class="- topic/p p" data-ofbid="d97022e33__20250123155207">I2C 包括以下配置内容：<ol class="- topic/ol ol" id="i2c_configuration__ol_q5h_rtr_21c" data-ofbid="i2c_configuration__ol_q5h_rtr_21c">
|
||
<li class="- topic/li li" data-ofbid="d97022e37__20250123155207">内核配置<ol class="- topic/ol ol" type="a" id="i2c_configuration__ol_gs2_str_21c" data-ofbid="i2c_configuration__ol_gs2_str_21c">
|
||
<li class="- topic/li li" data-ofbid="d97022e41__20250123155207">master 驱动使能<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__pre_hkk_ptr_21c" data-ofbid="i2c_configuration__pre_hkk_ptr_21c"><code>Device Drivers
|
||
I2C support--->
|
||
<*> I2C support
|
||
<*> I2C device interface
|
||
I2C Hardware Bus support--->
|
||
<*> ArtInChip I2C support
|
||
</code></pre></li>
|
||
<li class="- topic/li li" data-ofbid="d97022e46__20250123155207">slave 驱动使能<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__pre_jkk_ptr_21c" data-ofbid="i2c_configuration__pre_jkk_ptr_21c"><code>Device Drivers
|
||
I2C support--->
|
||
<*> I2C support
|
||
<*> I2C device interface
|
||
I2C Hardware Bus support--->
|
||
<*> ArtInChip I2C support
|
||
<*> ArtInChip I2C as slave mode
|
||
<*> I2C slave support
|
||
<*> I2C eeprom slave driver
|
||
</code></pre><div class="- topic/note note note note_note" id="i2c_configuration__note_umd_ttr_21c" data-ofbid="i2c_configuration__note_umd_ttr_21c"><span class="note__title">注：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d97022e52__20250123155207">在将 I2C 作为 slave 时，需要一个 backend 程序，作为 slave 的功能逻辑实现。此处选择内核自带的
|
||
eeprom，即 I2C 作为 slave 时，是当做一个 eeprom
|
||
的功能在使用。也可以根据实际情况自己实现相应的 backend 代码</p>
|
||
</div></div></li>
|
||
<li class="- topic/li li" data-ofbid="d97022e56__20250123155207">eeprom 驱动使能<p class="- topic/p p" data-ofbid="d97022e58__20250123155207">使用 I2C 接口与 eeprom 通信，是一种应用非常广泛的场景。此处介绍如何使能内核的 eeprom
|
||
驱动(需要先使能 I2C 的 master
|
||
驱动)。</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__pre_lkk_ptr_21c" data-ofbid="i2c_configuration__pre_lkk_ptr_21c"><code>Device Drivers
|
||
Misc devices--->
|
||
EEPROM support--->
|
||
<*> I2C EEPROMs/RAMs/ROMs from most vendors
|
||
</code></pre></li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d97022e64__20250123155207">DTS 配置<ol class="- topic/ol ol" type="a" id="i2c_configuration__ol_p54_5tr_21c" data-ofbid="i2c_configuration__ol_p54_5tr_21c">
|
||
<li class="- topic/li li" data-ofbid="d97022e68__20250123155207">I2C 公共参数配置，以 I2C0
|
||
为例<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__codeblock_dwc_vtr_21c" data-ofbid="i2c_configuration__codeblock_dwc_vtr_21c"><code>i2c0: i2c@<span class="hl-number">19220000</span> {
|
||
compatible = <span class="hl-string">"artinchip,aic-i2c-v1.0"</span>;
|
||
reg = <<span class="hl-number">0x0</span> <span class="hl-number">0x19220000</span> <span class="hl-number">0x0</span> <span class="hl-number">0x400</span>>;
|
||
interrupts-extended = <&plic0 <span class="hl-number">84</span> IRQ_TYPE_LEVEL_HIGH>;
|
||
clocks = <&cmu CLK_I2C0>;
|
||
resets = <&rst RESET_I2C0>;
|
||
#address-cells = <<span class="hl-number">1</span>>;
|
||
#size-cells = <<span class="hl-number">0</span>>;
|
||
};</code></pre></li>
|
||
<li class="- topic/li li" data-ofbid="d97022e73__20250123155207">I2C master 配置<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__codeblock_f32_wtr_21c" data-ofbid="i2c_configuration__codeblock_f32_wtr_21c"><code>&i2c0 {
|
||
pinctrl-names = <span class="hl-string">"default"</span>;
|
||
pinctrl-<span class="hl-number">0</span> = <&i2c0_pins_a>;
|
||
status = <span class="hl-string">"okay"</span>;
|
||
eeprom@<span class="hl-number">50</span> {
|
||
compatible = <span class="hl-string">"atmel,24c64"</span>;
|
||
reg = <<span class="hl-number">0x50</span>>;
|
||
pagesize = <<span class="hl-number">32</span>>;
|
||
};
|
||
};</code></pre><div class="- topic/note note note note_note" id="i2c_configuration__note_lf4_wtr_21c" data-ofbid="i2c_configuration__note_lf4_wtr_21c"><span class="note__title">注：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d97022e79__20250123155207">该配置是将 eeprom 挂在 I2C0 总线上的配置，reg 属性表示 slave 设备的地址，pagesize 表示
|
||
eeprom 一页有 32byte。若在 I2C 总线上挂其它设备，对 DTS
|
||
进行相应修改即可。</p>
|
||
</div></div></li>
|
||
<li class="- topic/li li" data-ofbid="d97022e83__20250123155207">I2C slave
|
||
配置<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__codeblock_p4h_xtr_21c" data-ofbid="i2c_configuration__codeblock_p4h_xtr_21c"><code>&i2c0 {
|
||
pinctrl-names = <span class="hl-string">"default"</span>;
|
||
pinctrl-<span class="hl-number">0</span> = <&i2c0_pins_a>;
|
||
status = <span class="hl-string">"okay"</span>;
|
||
slave@<span class="hl-number">54</span> {
|
||
compatible = <span class="hl-string">"slave-24c02"</span>;
|
||
reg = <<span class="hl-number">0x40000054</span>>;
|
||
};
|
||
};</code></pre><p class="- topic/p p" data-ofbid="d97022e87__20250123155207">内核的 I2C 子系统框架会通过查看 reg 属性的
|
||
bit30，判断 I2C 是工作在主机模式还是从机模式。若 bit30 为
|
||
1，则为从机模式。上述配置表示 I2C 工作在从机模式，设备地址为
|
||
0x54。</p><div class="- topic/p p" data-ofbid="d97022e89__20250123155207">若需要设置从机为 10bit 寻址，则需要设置 reg 属性的 bit31
|
||
为 1，如下图所示，配置从机地址为
|
||
0x139。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2c_configuration__codeblock_qrv_xtr_21c" data-ofbid="i2c_configuration__codeblock_qrv_xtr_21c"><code>&i2c0 {
|
||
pinctrl-names = <span class="hl-string">"default"</span>;
|
||
pinctrl-<span class="hl-number">0</span> = <&i2c0_pins_a>;
|
||
status = <span class="hl-string">"okay"</span>;
|
||
slave@<span class="hl-number">139</span> {
|
||
compatible = <span class="hl-string">"slave-24c02"</span>;
|
||
reg = <<span class="hl-number">0xC0000139</span>>;
|
||
};
|
||
};</code></pre></div></li>
|
||
</ol></li>
|
||
</ol></div>
|
||
</div>
|
||
</article></main></div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
<footer class="navbar navbar-default wh_footer">
|
||
<div class=" footer-container mx-auto ">
|
||
<title>footer def</title>
|
||
<style><!--
|
||
|
||
.p1 {
|
||
font-family: FangZhengShuSong, Times, serif;
|
||
}
|
||
.p2 {
|
||
font-family: Arial, Helvetica, sans-serif;
|
||
}
|
||
.p3 {
|
||
font-family: "Lucida Console", "Courier New", monospace;
|
||
}
|
||
|
||
--></style>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="webhelp.fragment.footer">
|
||
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
||
</div><div>
|
||
<div class="generation_time">
|
||
Update Time: 2025-01-23
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
<button id="go2top" class="d-print-none" title="返回顶部">
|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</button>
|
||
|
||
<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> |