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<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
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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="源代码位于： drivers/iio/adc/artinchip_adc.c 模块架构 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 ..."/><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.contributor" content="yan.wang"/><meta name="DC.date.modified" content="2024-12-02"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="gpai_design_intro"/><meta name="DC.language" content="zh-CN"/><title>设计说明</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/gpai/gpai_design.dita"/><meta name="wh-out-relpath" content="topics/sdk/gpai/gpai_design.html"/>
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<body id="gpai_design_intro" class="wh_topic_page frmBody">
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跳转到主要内容
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<a href="http://www.artinchip.com" class=" wh_logo d-none d-sm-block "><img src="../../../company-logo-white.png" alt="RTOS SDK 使用指南SDK 指南文件"/></a>
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<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>
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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/gpai/gpai_design.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1><div class="date inPage">2 Dec 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d54374e22__20250121171519">源代码位于：<span class="+ topic/ph sw-d/filepath ph filepath">drivers/iio/adc/artinchip_adc.c</span></p><section class="- topic/section section" id="gpai_design_intro__section_wdt_qrr_21c" data-ofbid="gpai_design_intro__section_wdt_qrr_21c"><h2 class="- topic/title title sectiontitle">模块架构</h2>
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<p class="- topic/p p" data-ofbid="d54374e31__20250121171519"><strong class="+ topic/ph hi-d/b ph b">IIO</strong></p>
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<p class="- topic/p p" data-ofbid="d54374e35__20250121171519">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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<p class="- topic/p p" data-ofbid="d54374e38__20250121171519">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>
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<p class="- topic/p p" data-ofbid="d54374e41__20250121171519">整个 IIO 软件框架可抽象为下图：</p>
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<figure class="- topic/fig fig fignone" id="gpai_design_intro__fig_v35_srr_21c" data-ofbid="gpai_design_intro__fig_v35_srr_21c"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="gpai_design_intro__image_ydt_qrr_21c" src="../../../images/gpai/sw_system16.png" alt="sw_system16"/></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>
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<ul class="- topic/ul ul" id="gpai_design_intro__ul_zdt_qrr_21c" data-ofbid="gpai_design_intro__ul_zdt_qrr_21c"><li class="- topic/li li" data-ofbid="d54374e53__20250121171519">
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<p class="- topic/p p" data-ofbid="d54374e55__20250121171519">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。</p>
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</li><li class="- topic/li li" data-ofbid="d54374e58__20250121171519">
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<p class="- topic/p p" data-ofbid="d54374e60__20250121171519">一般情况下，每个通道对应一个 sysfs 节点文件。</p>
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</li></ul>
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</section><div class="- topic/example example" id="gpai_design_intro__example_lzn_trr_21c" data-ofbid="gpai_design_intro__example_lzn_trr_21c"><h2 class="- topic/title title sectiontitle">用户空间的设备文件名举例</h2>
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<ul class="- topic/ul ul" id="gpai_design_intro__ul_b2t_qrr_21c" data-ofbid="gpai_design_intro__ul_b2t_qrr_21c"><li class="- topic/li li" data-ofbid="d54374e70__20250121171519">
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<p class="- topic/p p" data-ofbid="d54374e72__20250121171519"><span class="+ topic/ph sw-d/filepath ph filepath">/sys/bus/iio/iio:deviceX/</span></p>
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</li><li class="- topic/li li" data-ofbid="d54374e76__20250121171519">
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<p class="- topic/p p" data-ofbid="d54374e78__20250121171519"><span class="+ topic/ph sw-d/filepath ph filepath">/dev/iio:deviceX</span></p>
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</li></ul>
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</div></div></article></main></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="#gpai_design_intro__section_wdt_qrr_21c" data-tocid="gpai_design_intro__section_wdt_qrr_21c">模块架构</a></div></li><li class="section-title"><a href="#gpai_design_intro__example_lzn_trr_21c" data-tocid="gpai_design_intro__example_lzn_trr_21c">用户空间的设备文件名举例</a></li></ul></div>
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Update Time: 2025-01-21
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