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<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="IIO 工业 I/O，是 Linux 内核中专用于处理模数转换器（ADC）和数模转换器（DAC）的子系统，最初创建于 2009 年，提供了统一的框架来访问和控制各种类型的传感器，并且为用户态提供了标准的接口。 目前 IIO 支持的设备类型包括：ADC/DAC、加速度计、磁力计、陀螺仪、电流/电压测量芯片、压力传感器、温度传感器、湿度传感器、光传感器、压力传感器等。 整个 IIO ..."/><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.creator" content="yan.wang"/><meta name="DC.date.created" content="2024-01-24"/><meta name="DC.date.modified" content="2024-06-07"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="psadc_architecture"/><meta name="DC.language" content="zh-CN"/><title>模块架构</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/psadc/psadc-architecture.dita"/><meta name="wh-out-relpath" content="topics/sdk/psadc/psadc-architecture.html"/>
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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/psadc/psadc-architecture.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">模块架构</h1><div class="date inPage">7 Jun 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><dl class="- topic/dl dl" id="psadc_architecture__dl_mly_4sz_21c" data-ofbid="psadc_architecture__dl_mly_4sz_21c"><dt class="- topic/dt dt dlterm" data-ofbid="d229951e25__20250121171650">IIO</dt><dd class="- topic/dd dd">
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<p class="- topic/p p" data-ofbid="d229951e29__20250121171650">工业 I/O，是 Linux 内核中专用于处理模数转换器（ADC）和数模转换器（DAC）的子系统，最初创建于 2009 年，提供了统一的框架来访问和控制各种类型的传感器，并且为用户态提供了标准的接口。</p>
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</dd></dl><p class="- topic/p p" data-ofbid="d229951e32__20250121171650">目前 IIO 支持的设备类型包括：ADC/DAC、加速度计、磁力计、陀螺仪、电流/电压测量芯片、压力传感器、温度传感器、湿度传感器、光传感器、压力传感器等。</p><p class="- topic/p p" data-ofbid="d229951e34__20250121171650">整个 IIO 软件框架可抽象为下图：</p><figure class="- topic/fig fig fignone" id="psadc_architecture__fig_pp3_psz_21c" data-ofbid="psadc_architecture__fig_pp3_psz_21c"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="psadc_architecture__image_nly_4sz_21c" src="../../../images/psadc/sw_system17.png" alt="sw_system17"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">Linux IIO 子系统架构图</span></figcaption></figure><ul class="- topic/ul ul" id="psadc_architecture__ul_oly_4sz_21c" data-ofbid="psadc_architecture__ul_oly_4sz_21c"><li class="- topic/li li" data-ofbid="d229951e43__20250121171650">IIO 设备会提供字符设备（支持触发缓冲区）和 Sysfs 节点作为用户态的访问接口。</li><li class="- topic/li li" data-ofbid="d229951e45__20250121171650">一般情况下，每个通道对应一个 sysfs 节点文件。</li><li class="- topic/li li" data-ofbid="d229951e47__20250121171650">用户空间的设备文件名举例：<ul class="- topic/ul ul" id="psadc_architecture__ul_qly_4sz_21c" data-ofbid="psadc_architecture__ul_qly_4sz_21c"><li class="- topic/li li" data-ofbid="d229951e50__20250121171650">
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<p class="- topic/p p" data-ofbid="d229951e57__20250121171650">/dev/iio:deviceX</p>
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