mirror of
https://gitee.com/Vancouver2017/luban-lite-t3e-pro.git
synced 2025-12-14 18:38:55 +00:00
243 lines
37 KiB
HTML
243 lines
37 KiB
HTML
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
|
||
<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="初始化流程 总体上看，DVP 驱动的初始化过程分为两大段： 由 probe() 接口完成中断申请、管理状态初始化，主要任务包括注册中断处理函数、初始化全局变量和数据结构。 由 open() 接口完成，需要等 Sensor 执行完初始化后才能执行。完成的操作包括使能时钟、使能 DVP 控制器、初始化 Buf 链表信息等。 Buf 管理 Buf 管理涉及以下关键操作： 初始化 Buf 队列。 ..."/><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/dvp/dvp_design_lite.html"/><meta name="DC.relation" content="../../../topics/sdk/dvp/dvp_design_lite.html"/><meta name="DC.relation" content="../../../topics/sdk/dvp/dvp_data_struct_lite.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="dvp-key-procedure"/><title>关键流程设计</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content="dvp-key-procedure-d5856e4015"/><meta name="wh-source-relpath" content="topics/sdk/dvp/dvp_key_procedure_lite.dita"/><meta name="wh-out-relpath" content="topics/sdk/dvp/dvp_key_procedure_lite.html"/>
|
||
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/commons.css?buildId=2023110923"/>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/topic.css?buildId=2023110923"/>
|
||
|
||
<script src="../../../webhelp/app/options/properties.js?buildId=20250121171154"></script>
|
||
<script src="../../../webhelp/app/localization/strings.js?buildId=2023110923"></script>
|
||
<script src="../../../webhelp/app/search/index/keywords.js?buildId=20250121171154"></script>
|
||
<script defer="defer" src="../../../webhelp/app/commons.js?buildId=2023110923"></script>
|
||
<script defer="defer" src="../../../webhelp/app/topic.js?buildId=2023110923"></script>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-styles-web.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/notes.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-common.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-images.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/footnote.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-web-watermark.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/topic-body-list.css?buildId=2023110923"/></head>
|
||
|
||
<body id="dvp-key-procedure" 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="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>
|
||
|
||
</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_mcc_32s_nbc"><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html">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><div class="topicref" data-id="concept_h4d_fwt_tzb"><div class="title"><a href="../../../topics/sdk/dvp/dvp_user_guide_2.html">DVP 使用指南</a></div></div></li><li><div class="topicref" data-id="dvp_design_guide"><div class="title"><a href="../../../topics/sdk/dvp/dvp_design_lite.html">设计说明</a></div></div></li><li class="active"><div class="topicref" data-id="dvp-key-procedure"><div class="title"><a href="../../../topics/sdk/dvp/dvp_key_procedure_lite.html">关键流程设计</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/dvp/dvp_design_lite.html" title="设计说明" aria-label="上一主题: 设计说明" rel="prev"></a></span>
|
||
<span class="navnext"><a class="- topic/link link" href="../../../topics/sdk/dvp/dvp_data_struct_lite.html" title="数据结构设计" aria-label="下一主题: 数据结构设计" 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-d5856e989" 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-d5856e989-link">修订记录</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e1003" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e1003-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/env/sdk-compile.html" id="id-d5856e1003-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-d5856e1152" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e1152-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/sdk-usage.html" id="id-d5856e1152-link">使用指南</a><div class="wh-tooltip"><p class="shortdesc">系统镜像、编译选项、开发板、应用等相关的详细使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_rcx_czh_pzb-d5856e1416" 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-d5856e1416-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-app.html" id="concept_rcx_czh_pzb-d5856e1416-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-d5856e2119" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e2119-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/peripheral/peripheral-intro.html" id="id-d5856e2119-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-d5856e2244" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e2244-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/chapter-bringup.html" id="id-d5856e2244-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-d5856e2345" class="topicref" data-id="id" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action id-d5856e2345-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html" id="id-d5856e2345-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-d5856e2360" class="topicref" data-id="_0" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action _0-d5856e2360-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/lite_boot_direct.html" id="_0-d5856e2360-link">启动引导</a><div class="wh-tooltip"><p class="shortdesc">启动引导程序 Bootloader 可以实现加载启动应用程序、 烧录和升级功能。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-system-d5856e2435" class="topicref" data-id="chapter-system" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-system-d5856e2435-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-system.html" id="chapter-system-d5856e2435-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-d5856e3357" class="topicref" data-id="chapter-memory" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-memory-d5856e3357-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-memory-sdk.html" id="chapter-memory-d5856e3357-link">存储</a><div class="wh-tooltip"><p class="shortdesc">SDMC、SPI NAND、SPI NOR<span class="ph"> 以及文件系统</span> 等存储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_mcc_32s_nbc-d5856e3639" class="topicref" data-id="concept_mcc_32s_nbc" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action concept_mcc_32s_nbc-d5856e3639-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html" id="concept_mcc_32s_nbc-d5856e3639-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><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e3654" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e3654-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/audio/audio_user_guide.html" id="id-d5856e3654-link">Audio 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e3714" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e3714-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_user_guide_2.html" id="id-d5856e3714-link">Display 使用指南</a></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="concept_h4d_fwt_tzb-d5856e3955" class="topicref" data-id="concept_h4d_fwt_tzb" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action concept_h4d_fwt_tzb-d5856e3955-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_user_guide_2.html" id="concept_h4d_fwt_tzb-d5856e3955-link">DVP 使用指南</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="id-d5856e3967" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_config_lite.html" id="id-d5856e3967-link">参数配置</a></div></div></li><li role="treeitem"><div data-tocid="id-d5856e3979" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_debug_lite.html" id="id-d5856e3979-link">调试指南</a></div></div></li><li role="treeitem"><div data-tocid="id-d5856e3991" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_test_lite.html" id="id-d5856e3991-link">测试指南</a></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="dvp_design_guide-d5856e4003" class="topicref" data-id="dvp_design_guide" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action dvp_design_guide-d5856e4003-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_design_lite.html" id="dvp_design_guide-d5856e4003-link">设计说明</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" class="active"><div data-tocid="dvp-key-procedure-d5856e4015" class="topicref" data-id="dvp-key-procedure" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_key_procedure_lite.html" id="dvp-key-procedure-d5856e4015-link">关键流程设计</a></div></div></li><li role="treeitem"><div data-tocid="dvp-data-structure-d5856e4027" class="topicref" data-id="dvp-data-structure" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_data_struct_lite.html" id="dvp-data-structure-d5856e4027-link">数据结构设计</a></div></div></li><li role="treeitem"><div data-tocid="dvp-interface-design-d5856e4039" class="topicref" data-id="dvp-interface-design" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_interface_lite.html" id="dvp-interface-design-d5856e4039-link">接口设计</a></div></div></li><li role="treeitem"><div data-tocid="dvp-demo-d5856e4051" class="topicref" data-id="dvp-demo" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_demo_2.html" id="dvp-demo-d5856e4051-link">APP Demo</a></div></div></li></ul></li><li role="treeitem"><div data-tocid="id-d5856e4063" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_faq_lite.html" id="id-d5856e4063-link">常见问题</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="ge-d5856e4075" class="topicref" data-id="ge" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action ge-d5856e4075-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/ge/ge_user_guide_2.html" id="ge-d5856e4075-link">GE 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="i2s-d5856e4195" class="topicref" data-id="i2s" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action i2s-d5856e4195-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2s/i2s_user_guide_2.html" id="i2s-d5856e4195-link">I2S 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="ve-d5856e4303" class="topicref" data-id="ve" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action ve-d5856e4303-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/ve/ve-user-guide_2.html" id="ve-d5856e4303-link">VE 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="mpp-d5856e4363" class="topicref" data-id="mpp" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action mpp-d5856e4363-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_user_guide_2.html" id="mpp-d5856e4363-link">MPP 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="mpp_0-d5856e4495" class="topicref" data-id="mpp_0" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action mpp_0-d5856e4495-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_player_user_guide_2.html" id="mpp_0-d5856e4495-link">MPP 播放器使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4579" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4579-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_recorder_user_guide.html" id="id-d5856e4579-link">MPP 录像使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4651" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4651-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mini_audio_player_user_guide.html" id="id-d5856e4651-link">MPP 音频播放器使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4724" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4724-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/lvgl/lvgl_introduction.html" id="id-d5856e4724-link">LVGL 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d5856e4868" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_nww_hzh_pzb-d5856e4868-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d5856e4868-link">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 role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d5856e6083" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d5856e6083-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d5856e6083-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-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>
|
||
<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>
|
||
|
||
<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/dvp/dvp_key_procedure_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">关键流程设计</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 1 minute(s)
|
||
</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="dvp-key-procedure__section_hfd_hpf_fdc" data-ofbid="dvp-key-procedure__section_hfd_hpf_fdc"><h2 class="- topic/title title sectiontitle">初始化流程</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d87670e29__20250121171529">总体上看，DVP 驱动的初始化过程分为两大段：</p>
|
||
<ol class="- topic/ol ol arabic simple" id="dvp-key-procedure__ol_vxt_1kt_2dc" data-ofbid="dvp-key-procedure__ol_vxt_1kt_2dc"><li class="- topic/li li" data-ofbid="d87670e33__20250121171529">
|
||
<p class="- topic/p p" data-ofbid="d87670e35__20250121171529">由 <span class="+ topic/keyword pr-d/apiname keyword apiname">probe()</span>
|
||
接口完成中断申请、管理状态初始化，主要任务包括注册中断处理函数、初始化全局变量和数据结构。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d87670e41__20250121171529">
|
||
<p class="- topic/p p" data-ofbid="d87670e43__20250121171529">由 <span class="+ topic/keyword pr-d/apiname keyword apiname">open()</span> 接口完成，需要等 Sensor 执行完初始化后才能执行。完成的操作包括使能时钟、使能 DVP
|
||
控制器、初始化 Buf 链表信息等。</p>
|
||
</li></ol>
|
||
</section><section class="- topic/section section" id="dvp-key-procedure__section_nq5_wpt_2dc" data-ofbid="dvp-key-procedure__section_nq5_wpt_2dc"><h2 class="- topic/title title sectiontitle">Buf 管理</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d87670e55__20250121171529">Buf 管理涉及以下关键操作：</p>
|
||
<ul class="- topic/ul ul" id="dvp-key-procedure__ul_b2c_h4t_2dc" data-ofbid="dvp-key-procedure__ul_b2c_h4t_2dc"><li class="- topic/li li" data-ofbid="d87670e59__20250121171529">初始化 Buf 队列。</li><li class="- topic/li li" data-ofbid="d87670e61__20250121171529">分配和释放 Buf。</li><li class="- topic/li li" data-ofbid="d87670e63__20250121171529">将 Buf 添加到空闲队列或工作队列。</li></ul>
|
||
<p class="- topic/p p" data-ofbid="d87670e66__20250121171529">详见 MPP VIN 模块中的 <a xml:lang="zh-CN" lang="zh-CN" class="- topic/xref xref" href="../mpp/mpp-vin-design-interface.html#mpp_vin_%E8%AE%BE%E8%AE%A1%E5%8F%8A%E6%8E%A5%E5%8F%A3%E8%AF%B4%E6%98%8E__section_znl_jf4_f1c">Buf 队列管理</a></p>
|
||
</section><section class="- topic/section section" id="dvp-key-procedure__section_vst_xym_4dc" data-ofbid="dvp-key-procedure__section_vst_xym_4dc"><h2 class="- topic/title title sectiontitle">中断处理流程</h2>
|
||
|
||
<div class="- topic/div div section" id="dvp-key-procedure__id6">
|
||
<div class="- topic/p p" data-ofbid="d87670e79__20250121171529">DVP 的中断处理函数中主要处理 Buf 的队列切换操作。 DVP 硬件提供的中断可以反映出多个状态（包括出错状态），其中包括以下关键状态：<div class="- topic/note note note note_note" id="dvp-key-procedure__note_hhd_w4t_2dc" data-ofbid="dvp-key-procedure__note_hhd_w4t_2dc"><span class="note__title">注：</span> <span class="+ topic/ph ui-d/uicontrol ph uicontrol">HNUM Interrupt</span> 会先于
|
||
<span class="+ topic/ph ui-d/uicontrol ph uicontrol">Frame done</span> 发生。</div></div>
|
||
<ul class="- topic/ul ul arabic simple" id="dvp-key-procedure__ol_wxt_1kt_2dc" data-ofbid="dvp-key-procedure__ol_wxt_1kt_2dc"><li class="- topic/li li" data-ofbid="d87670e90__20250121171529">
|
||
<p class="- topic/p p" data-ofbid="d87670e92__20250121171529"><span class="+ topic/ph ui-d/uicontrol ph uicontrol">HNUM Interrupt</span></p>
|
||
<p class="- topic/p p" data-ofbid="d87670e96__20250121171529">用于判断当前 Register 是否可以修改。出现 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">HNUM
|
||
Interrupt</span>，表示当前图像帧已经完成 1/4 帧（驱动中默认配置）数据的刷新，意味着此时的 Buf 相关
|
||
Register （影子寄存器）可以被修改，软件可以传入下一个 Buf 的参数了。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d87670e102__20250121171529">
|
||
<p class="- topic/p p" data-ofbid="d87670e104__20250121171529"><span class="+ topic/ph ui-d/uicontrol ph uicontrol">Frame done</span></p>
|
||
<p class="- topic/p p" data-ofbid="d87670e108__20250121171529">用于判断当前 buf 是否完成（done 状态）。出现 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Frame
|
||
done</span>，表示当前帧的数据传输完成，此时该 buf 可以从 QBuf list 切换到 DQbuf list。</p>
|
||
</li></ul>
|
||
<p class="- topic/p p" data-ofbid="d87670e115__20250121171529">按照 DVP 硬件设计的逻辑，<span class="+ topic/ph ui-d/uicontrol ph uicontrol">HNUM Interrupt</span> 和 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Frame
|
||
done</span> 会间隔着产生，如下所示：</p>
|
||
<p class="- topic/p p" data-ofbid="d87670e124__20250121171529">
|
||
<span class="+ topic/keyword pr-d/parmname keyword parmname">HNUM Interrupt -> Framedone -> HNUM Interrupt -> Frame done
|
||
-> HNUM Interrupt -> Frame done...</span>
|
||
</p>
|
||
<figure class="- topic/fig fig fignone" id="dvp-key-procedure__id9" data-ofbid="dvp-key-procedure__id9"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="dvp-key-procedure__image_zxt_1kt_2dc" src="../../../reusables/reused-topics/../../images/dvp/dvp_irq_flow.png" alt="dvp_irq_flow"/></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">DVP 驱动中 IRQ 处理流程</span></figcaption></figure>
|
||
<div class="- topic/p p" data-ofbid="d87670e138__20250121171529">以下分别介绍了关键状态的详细处理流程：<ul class="- topic/ul ul" id="dvp-key-procedure__ul_q5w_nqt_2dc" data-ofbid="dvp-key-procedure__ul_q5w_nqt_2dc"><li class="- topic/li li" data-ofbid="d87670e141__20250121171529">“处理 Frame done 事件” 的子流程如下：<figure class="- topic/fig fig fignone" id="dvp-key-procedure__id10" data-ofbid="dvp-key-procedure__id10"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="dvp-key-procedure__image_ayt_1kt_2dc" src="../../../reusables/reused-topics/../../images/dvp/dvp_frame_done_flow.png" alt="dvp_frame_done_flow"/></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"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">DVP 驱动中 Frame done 处理流程</span></figcaption></figure></li><li class="- topic/li li" data-ofbid="d87670e149__20250121171529">
|
||
<div class="- topic/p p" data-ofbid="d87670e151__20250121171529">“处理 HNUM Interrupt 事件” 的子流程如下：<figure class="- topic/fig fig fignone" id="dvp-key-procedure__id11" data-ofbid="dvp-key-procedure__id11"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="dvp-key-procedure__image_byt_1kt_2dc" src="../../../reusables/reused-topics/../../images/dvp/dvp_hnum_int_flow.png" alt="dvp_hnum_int_flow"/></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"> 3</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">DVP 驱动中 HNUM Interrupt 处理流程</span></figcaption></figure></div>
|
||
<ul class="- topic/ul ul simple" id="dvp-key-procedure__ul_cyt_1kt_2dc" data-ofbid="dvp-key-procedure__ul_cyt_1kt_2dc"><li class="- topic/li li" data-ofbid="d87670e161__20250121171529">
|
||
<dl class="- topic/dl dl simple" id="dvp-key-procedure__dl_dyt_1kt_2dc" data-ofbid="dvp-key-procedure__dl_dyt_1kt_2dc"><dt class="- topic/dt dt dlterm" data-ofbid="d87670e165__20250121171529">“异常！DVP 同时使用了两个 Buf”</dt><dd class="- topic/dd dd">
|
||
<p class="- topic/p p" data-ofbid="d87670e169__20250121171529">理论上不应该发生，可认为是一种异常，但因为 DVP 此时正在向 Buf 写数据，所以先不执行
|
||
stop，软件上报错。</p>
|
||
</dd></dl>
|
||
</li><li class="- topic/li li" data-ofbid="d87670e173__20250121171529">
|
||
<dl class="- topic/dl dl simple" id="dvp-key-procedure__dl_eyt_1kt_2dc" data-ofbid="dvp-key-procedure__dl_eyt_1kt_2dc"><dt class="- topic/dt dt dlterm" data-ofbid="d87670e177__20250121171529">“DVP 在使用”</dt><dd class="- topic/dd dd">
|
||
<p class="- topic/p p" data-ofbid="d87670e181__20250121171529">表示 “DVP 控制器硬件正在使用”。</p>
|
||
</dd></dl>
|
||
</li></ul>
|
||
</li></ul></div>
|
||
</div>
|
||
</section></div></article></main></div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</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="#dvp-key-procedure__section_hfd_hpf_fdc" data-tocid="dvp-key-procedure__section_hfd_hpf_fdc">初始化流程</a></div></li><li class="section-item"><div class="section-title"><a href="#dvp-key-procedure__section_nq5_wpt_2dc" data-tocid="dvp-key-procedure__section_nq5_wpt_2dc">Buf 管理</a></div></li><li class="section-item"><div class="section-title"><a href="#dvp-key-procedure__section_vst_xym_4dc" data-tocid="dvp-key-procedure__section_vst_xym_4dc">中断处理流程</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>
|
||
<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: 2025-01-21
|
||
</div>
|
||
</div>
|
||
</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> |