333 lines
33 KiB
HTML
333 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="本次 Demo 是通过 ioctl 接口来访问设备节点 /dev/rtc0 ： #include "base.h" #include <sys/time.h> #include <linux/rtc.h> /* Global macro and variables */ # define ALARM_MAX_DELAY ( 60 * 60 ) # define ALARM_MIN_DELAY 1 ..."/><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/rtc/rtc-design-intro.html"/><meta name="DC.relation" content="../../../topics/sdk/rtc/rtc-interface-design.html"/><meta name="DC.relation" content="../../../topics/sdk/rtc/rtc-common-issues.html"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.creator" content="yan.wang"/><meta name="DC.date.modified" content="2024-01-15"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="rtc_demo"/><meta name="DC.language" content="zh-CN"/><title>Demo</title><!-- Generated with build number 2024112209. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content="rtc_demo-d4445e3648"/><meta name="wh-source-relpath" content="topics/sdk/rtc/rtc-demo.dita"/><meta name="wh-out-relpath" content="topics/sdk/rtc/rtc-demo.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="rtc_demo" 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="chapter-system"><div class="title"><a href="../../../topics/chapter-title/chapter-system.html">系统</a><div class="wh-tooltip"><p class="shortdesc"></p></div></div></div></li><li><div class="topicref" data-id="concept_n2p_sn3_pzb"><div class="title"><a href="../../../topics/sdk/rtc/rtc-user-guide.html">RTC 使用指南</a></div></div></li><li><div class="topicref" data-id="rtc_design_intro"><div class="title"><a href="../../../topics/sdk/rtc/rtc-design-intro.html">设计说明</a></div></div></li><li class="active"><div class="topicref" data-id="rtc_demo"><div class="title"><a href="../../../topics/sdk/rtc/rtc-demo.html">Demo</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/rtc/rtc-interface-design.html" title="接口设计" aria-label="上一主题: 接口设计" rel="prev"></a></span>
|
|||
|
|
<span class="navnext"><a class="- topic/link link" href="../../../topics/sdk/rtc/rtc-common-issues.html" title="常见问题" aria-label="下一主题: 常见问题" 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="titl
|
|||
|
|
|
|||
|
|
</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/rtc/rtc-demo.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Demo</h1>
|
|||
|
|
|
|||
|
|
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
|||
|
|
Read time: 4 minute(s)
|
|||
|
|
</div>
|
|||
|
|
<div class="- topic/body concept/conbody body conbody">
|
|||
|
|
<div class="- topic/p p" data-ofbid="d129687e33__20250123155212">本次 Demo 是通过 ioctl 接口来访问设备节点
|
|||
|
|
<span class="+ topic/ph sw-d/filepath ph filepath">/dev/rtc0</span>：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="rtc_demo__codeblock_l1h_bxs_c1c" data-ofbid="rtc_demo__codeblock_l1h_bxs_c1c"><code>#include <span class="hl-string">"base.h"</span>
|
|||
|
|
#include <sys/time.h>
|
|||
|
|
#include <linux/rtc.h>
|
|||
|
|
|
|||
|
|
<em class="hl-comment">/* Global macro and variables */</em>
|
|||
|
|
|
|||
|
|
#<span class="hl-directive">define</span> ALARM_MAX_DELAY (<span class="hl-number">60</span> * <span class="hl-number">60</span>)
|
|||
|
|
#<span class="hl-directive">define</span> ALARM_MIN_DELAY <span class="hl-number">1</span>
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">char</strong> sopts[] = <span class="hl-string">"d:u"</span>;
|
|||
|
|
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> option lopts[] = {
|
|||
|
|
{<span class="hl-string">"delay"</span>, required_argument, NULL, <span class="hl-string">'d'</span>},
|
|||
|
|
{<span class="hl-string">"usage"</span>, no_argument, NULL, <span class="hl-string">'u'</span>},
|
|||
|
|
{<span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
<em class="hl-comment">/* Functions */</em>
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">void</strong> usage(<strong class="hl-keyword">char</strong> *program)
|
|||
|
|
{
|
|||
|
|
printf(<span class="hl-string">"Usage: %s will start a timer of given seconds, and wait it\n"</span>,
|
|||
|
|
program);
|
|||
|
|
printf(<span class="hl-string">"\t -d, --delay\trange: [%d, %d]\n"</span>, ALARM_MIN_DELAY,
|
|||
|
|
ALARM_MAX_DELAY);
|
|||
|
|
printf(<span class="hl-string">"\t -u, --usage \n"</span>);
|
|||
|
|
printf(<span class="hl-string">"\n"</span>);
|
|||
|
|
printf(<span class="hl-string">"Example: %s -d 12\n\n"</span>, program);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
<em class="hl-comment">/* Open a device file to be needed. */</em>
|
|||
|
|
<strong class="hl-keyword">int</strong> device_open(<strong class="hl-keyword">char</strong> *_fname, <strong class="hl-keyword">int</strong> _flag)
|
|||
|
|
{
|
|||
|
|
s32 fd = -<span class="hl-number">1</span>;
|
|||
|
|
|
|||
|
|
fd = open(_fname, _flag);
|
|||
|
|
<strong class="hl-keyword">if</strong> (fd < <span class="hl-number">0</span>) {
|
|||
|
|
ERR(<span class="hl-string">"Failed to open %s errno: %d[%s]\n"</span>,
|
|||
|
|
_fname, errno, strerror(errno));
|
|||
|
|
exit(<span class="hl-number">0</span>);
|
|||
|
|
}
|
|||
|
|
<strong class="hl-keyword">return</strong> fd;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">int</strong> main(<strong class="hl-keyword">int</strong> argc, <strong class="hl-keyword">char</strong> **argv)
|
|||
|
|
{
|
|||
|
|
<strong class="hl-keyword">int</strong> c, ret;
|
|||
|
|
<strong class="hl-keyword">int</strong> delay = <span class="hl-number">0</span>;
|
|||
|
|
<strong class="hl-keyword">int</strong> rtc_fd = -<span class="hl-number">1</span>;
|
|||
|
|
time_t tmp = <span class="hl-number">0</span>;
|
|||
|
|
<strong class="hl-keyword">struct</strong> rtc_time start = {<span class="hl-number">0</span>};
|
|||
|
|
<strong class="hl-keyword">struct</strong> rtc_time end = {<span class="hl-number">0</span>};
|
|||
|
|
<strong class="hl-keyword">struct</strong> rtc_wkalrm alrm_set = {<span class="hl-number">0</span>};
|
|||
|
|
<strong class="hl-keyword">struct</strong> rtc_wkalrm alrm_get = {<span class="hl-number">0</span>};
|
|||
|
|
|
|||
|
|
DBG(<span class="hl-string">"Compile time: %s\n"</span>, __TIME__);
|
|||
|
|
<strong class="hl-keyword">while</strong> ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -<span class="hl-number">1</span>) {
|
|||
|
|
<strong class="hl-keyword">switch</strong> (c) {
|
|||
|
|
<strong class="hl-keyword">case</strong> <span class="hl-string">'d'</span>:
|
|||
|
|
delay = str2int(optarg);
|
|||
|
|
<strong class="hl-keyword">continue</strong>;
|
|||
|
|
<strong class="hl-keyword">case</strong> <span class="hl-string">'u'</span>:
|
|||
|
|
usage(argv[<span class="hl-number">0</span>]);
|
|||
|
|
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
|||
|
|
<strong class="hl-keyword">default</strong>:
|
|||
|
|
<strong class="hl-keyword">break</strong>;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">if</strong> ((delay < ALARM_MIN_DELAY) || (delay > ALARM_MAX_DELAY)) {
|
|||
|
|
ERR(<span class="hl-string">"Invalid delay: %d\n"</span>, delay);
|
|||
|
|
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
rtc_fd = open(<span class="hl-string">"/dev/rtc0"</span>, O_RDWR);
|
|||
|
|
<strong class="hl-keyword">if</strong> (rtc_fd < <span class="hl-number">0</span>) {
|
|||
|
|
ERR(<span class="hl-string">"Failed to open RTC device!\n"</span>);
|
|||
|
|
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
DBG(<span class="hl-string">"ioctl(%#x)\n"</span>, RTC_RD_TIME);
|
|||
|
|
ret = ioctl(rtc_fd, RTC_RD_TIME, &start);
|
|||
|
|
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
|||
|
|
ERR(<span class="hl-string">"Failed to read RTC time!\n"</span>);
|
|||
|
|
<strong class="hl-keyword">goto</strong> err;
|
|||
|
|
}
|
|||
|
|
DBG(<span class="hl-string">"Current time: %04d-%02d-%02d %02d:%02d:%02d\n"</span>,
|
|||
|
|
start.tm_year, start.tm_mon, start.tm_mday,
|
|||
|
|
start.tm_hour, start.tm_min, start.tm_sec);
|
|||
|
|
|
|||
|
|
alrm_set.enabled = <span class="hl-number">1</span>;
|
|||
|
|
tmp = mktime((<strong class="hl-keyword">struct</strong> tm *)&start) + delay;
|
|||
|
|
memcpy(&alrm_set.time, gmtime(&tmp), <strong class="hl-keyword">sizeof</strong>(<strong class="hl-keyword">struct</strong> rtc_time));
|
|||
|
|
DBG(<span class="hl-string">"ioctl(%#x)\n"</span>, RTC_WKALM_SET);
|
|||
|
|
ret = ioctl(rtc_fd, RTC_WKALM_SET, &alrm_set);
|
|||
|
|
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
|||
|
|
ERR(<span class="hl-string">"Failed to set alarm! [%d]: %s\n"</span>, errno, strerror(errno));
|
|||
|
|
<strong class="hl-keyword">goto</strong> err;
|
|||
|
|
}
|
|||
|
|
DBG(<span class="hl-string">"Set a alarm to: %04d-%02d-%02d %02d:%02d:%02d\n"</span>,
|
|||
|
|
alrm_set.time.tm_year, alrm_set.time.tm_mon,
|
|||
|
|
alrm_set.time.tm_mday, alrm_set.time.tm_hour,
|
|||
|
|
alrm_set.time.tm_min, alrm_set.time.tm_sec);
|
|||
|
|
|
|||
|
|
<strong class="hl-keyword">do</strong> {
|
|||
|
|
memset(&alrm_get, <span class="hl-number">0</span>, <strong class="hl-keyword">sizeof</strong>(<strong class="hl-keyword">struct</strong> rtc_wkalrm));
|
|||
|
|
DBG(<span class="hl-string">"ioctl(%#x)\n"</span>, RTC_WKALM_RD);
|
|||
|
|
ret = ioctl(rtc_fd, RTC_WKALM_RD, &alrm_get);
|
|||
|
|
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
|||
|
|
ERR(<span class="hl-string">"Failed to read alarm!\n"</span>);
|
|||
|
|
<strong class="hl-keyword">goto</strong> err;
|
|||
|
|
}
|
|||
|
|
<strong class="hl-keyword">if</strong> (alrm_get.pending)
|
|||
|
|
<strong class="hl-keyword">break</strong>;
|
|||
|
|
|
|||
|
|
printf(<span class="hl-string">"Waiting ...\n"</span>);
|
|||
|
|
usleep(<span class="hl-number">200000</span>); <em class="hl-comment">// 200ms</em>
|
|||
|
|
} <strong class="hl-keyword">while</strong> (<span class="hl-number">1</span>);
|
|||
|
|
|
|||
|
|
DBG(<span class="hl-string">"ioctl(%#x)\n"</span>, RTC_RD_TIME);
|
|||
|
|
ret = ioctl(rtc_fd, RTC_RD_TIME, &end);
|
|||
|
|
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
|||
|
|
ERR(<span class="hl-string">"Failed to read RTC time!\n"</span>);
|
|||
|
|
<strong class="hl-keyword">goto</strong> err;
|
|||
|
|
}
|
|||
|
|
DBG(<span class="hl-string">"Current time: %04d-%02d-%02d %02d:%02d:%02d\n"</span>,
|
|||
|
|
end.tm_year, end.tm_mon, end.tm_mday,
|
|||
|
|
end.tm_hour, end.tm_min, end.tm_sec);
|
|||
|
|
|
|||
|
|
tmp = mktime((<strong class="hl-keyword">struct</strong> tm *)&end) - mktime((<strong class="hl-keyword">struct</strong> tm *)&start);
|
|||
|
|
DBG(<span class="hl-string">"Start a timer of %d, actualy is %ld ...\n"</span>, delay, tmp);
|
|||
|
|
<strong class="hl-keyword">if</strong> (ret != delay) {
|
|||
|
|
ERR(<span class="hl-string">"The timer is not accurate!\n"</span>);
|
|||
|
|
ret = -<span class="hl-number">1</span>;
|
|||
|
|
}
|
|||
|
|
<strong class="hl-keyword">else</strong> {
|
|||
|
|
DBG(<span class="hl-string">"The timer is good!\n"</span>);
|
|||
|
|
ret = <span class="hl-number">0</span>;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
err:
|
|||
|
|
<strong class="hl-keyword">if</strong> (rtc_fd > <span class="hl-number">0</span>)
|
|||
|
|
close(rtc_fd);
|
|||
|
|
<strong class="hl-keyword">return</strong> ret;
|
|||
|
|
}
|
|||
|
|
</code></pre></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>
|