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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" 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/rtc/rtc-config-guide-lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">RTC 配置</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__ref-to-lite-rtc-cfg" data-ofbid="id__ref-to-lite-rtc-cfg"><h2 class="- topic/title title sectiontitle">打开 RTC 驱动</h2>
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<div class="- topic/p p" data-ofbid="d103337e24__20250121171537">
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<ol class="- topic/ol ol" id="id__ol_byv_1nb_ddc" data-ofbid="id__ol_byv_1nb_ddc"><li class="- topic/li li" data-ofbid="d103337e27__20250121171537">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入
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menuconfig
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的功能配置界面。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_md4_bnb_ddc" data-ofbid="id__codeblock_md4_bnb_ddc">scons --menuconfig</pre></li><li class="- topic/li li" data-ofbid="d103337e37__20250121171537">在菜单中找到并选择 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Board options</span> 后，勾选 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Using
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RTC</span> 选项，即可启用 RTC
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驱动。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_ic1_2nb_ddc" data-ofbid="id__codeblock_ic1_2nb_ddc">Board options --->
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[*] Using RTC</pre><div class="- topic/note note note note_note" id="id__note_ilr_4mb_ddc" data-ofbid="id__note_ilr_4mb_ddc"><span class="note__title">注：</span>
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<p class="- topic/p p" data-ofbid="d103337e49__20250121171537">为了简化使用，<span class="+ topic/ph ui-d/uicontrol ph uicontrol">Using RTC</span> 会自动打开 RT-Thread 的 RTC
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设备驱动框架。</p>
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</div></li><li class="- topic/li li" data-ofbid="d103337e55__20250121171537">根据实际需求调整 RTC 参数。如不需要，可跳过此步。<p class="- topic/p p" data-ofbid="d103337e57__20250121171537">勾选了 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Using RTC</span> 的情况下，可以看到
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<span class="+ topic/ph ui-d/uicontrol ph uicontrol">RTC parameter</span>，默认值是 <code class="+ topic/ph pr-d/codeph ph codeph">(3276800) The
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actual rate of 32K
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clock</code>，可根据实际需求配置。</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_xl4_3nb_ddc" data-ofbid="id__codeblock_xl4_3nb_ddc">Board options --->
|
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[*] Using RTC
|
||
RTC parameter --->
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||
(<span class="hl-number">3276800</span>) The actual rate of <span class="hl-number">32</span>K clock
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||
[ ] Enable the alarm IO output
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||
[ ] Enable the <span class="hl-number">32</span>K clock output</pre><p class="- topic/p p" data-ofbid="d103337e70__20250121171537">如果不需要启用 Alarm
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||
IO 输出和 32K 时钟输出，则勿勾选 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Enable the alarm IO output</span> 和
|
||
<span class="+ topic/ph ui-d/uicontrol ph uicontrol">Enable the 32K clock output</span>。</p></li><li class="- topic/li li" data-ofbid="d103337e78__20250121171537">选择 RT-Thread 组件，启用 RTC 设备驱动和 Alarm。<p class="- topic/p p" data-ofbid="d103337e80__20250121171537">在菜单中找到并选择 <code class="+ topic/ph pr-d/codeph ph codeph">Rt-Thread
|
||
options</code>，勾选 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Using RTC device drivers</span> 和
|
||
<span class="+ topic/ph ui-d/uicontrol ph uicontrol">Using RTC alarm</span>。</p><div class="- topic/p p" data-ofbid="d103337e91__20250121171537">当使用 RT-Thread 内核的时候，RTC
|
||
驱动需要依赖 RT-Thread 的 RTC 设备驱动框架和 alarm
|
||
框架。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_crg_mmb_ddc" data-ofbid="id__codeblock_crg_mmb_ddc">Rt-Thread options --->
|
||
RT-Thread Components --->
|
||
Device Drivers --->
|
||
[*] Using RTC device drivers
|
||
[*] Using RTC alarm</pre></div></li></ol>
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||
</div>
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</section><section class="- topic/section section" id="id__rtc" data-ofbid="id__rtc"><h2 class="- topic/title title sectiontitle">配置 RTC 自定义参数</h2>
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<p class="- topic/p p" data-ofbid="d103337e103__20250121171537">RTC 驱动在 menuconfig 中提供了一些扩展参数，方便用户根据板级硬件设计来进行调整。如下表：</p>
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||
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_nhv_cwh_bdc" data-ofbid="id__table_nhv_cwh_bdc" data-cols="5"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">RTC 自定义参数</span></caption><colgroup><col style="width:29.953051643192484%"/><col style="width:11.455399061032862%"/><col style="width:9.389671361502346%"/><col style="width:14.741784037558686%"/><col style="width:34.46009389671361%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_nhv_cwh_bdc__entry__1">参数名称</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_nhv_cwh_bdc__entry__2">适用版本</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_nhv_cwh_bdc__entry__3">类型</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_nhv_cwh_bdc__entry__4">取值范围</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_nhv_cwh_bdc__entry__5">功能说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__1">AIC_RTC_CLK_RATE</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__2">V1.0</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__3">正整数</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__4">3276800±3196</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__5">时钟源的实测频率值 * 100，用于时钟校准</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__1">AIC_RTC_ALARM_IO_OUTPUT</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__2">V1.0</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__3">boolean</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__4">1 - 是，0 - 否</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_nhv_cwh_bdc__entry__5">是否使能 Alarm 的 IO 输出功能</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_nhv_cwh_bdc__entry__1">AIC_RTC_32K_IO_OUTPUT</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_nhv_cwh_bdc__entry__2">V1.0</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_nhv_cwh_bdc__entry__3">boolean</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_nhv_cwh_bdc__entry__4">1 - 是，0 - 否</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_nhv_cwh_bdc__entry__5">是否使能 32K 时钟输出功能</td></tr></tbody></table></div>
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<ol class="- topic/ol ol arabic simple" id="id__ol_ohv_cwh_bdc" data-ofbid="id__ol_ohv_cwh_bdc"><li class="- topic/li li" data-ofbid="d103337e163__20250121171537">
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<p class="- topic/p p" data-ofbid="d103337e165__20250121171537"><code class="+ topic/ph pr-d/codeph ph codeph">AIC_RTC_CLK_RATE</code> 取时钟源频率值的 <strong class="+ topic/ph hi-d/b ph b">100 倍</strong>，是为了提高校准的精度，校准可以精确到
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0.03Hz。</p>
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</li><li class="- topic/li li" data-ofbid="d103337e173__20250121171537">
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<p class="- topic/p p" data-ofbid="d103337e175__20250121171537">参数 <code class="+ topic/ph pr-d/codeph ph codeph">aic,alarm-io-output</code> 和 <code class="+ topic/ph pr-d/codeph ph codeph">aic,32k-io-output</code>
|
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共用一个 IO 输出，所以只能二选一。</p>
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</li></ol>
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</section><section class="- topic/section section" id="id__id3" data-ofbid="id__id3"><h2 class="- topic/title title sectiontitle">配置时区</h2>
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<div class="- topic/p p" data-ofbid="d103337e191__20250121171537">在 RT-Thread 组件中提供了时区管理功能，<span class="- topic/ph ph">Luban-Lite</span> SDK 中默认配置时区为中国的 +8 时区。按照下列流程，可以配置和管理时钟：<ol class="- topic/ol ol" data-ofbid="d103337e196__20250121171537"><li class="- topic/li li" data-ofbid="d103337e197__20250121171537">
|
||
<div class="- topic/p p" data-ofbid="d103337e199__20250121171537">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入
|
||
menuconfig
|
||
的功能配置界面：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_qhv_cwh_bdc" data-ofbid="id__codeblock_qhv_cwh_bdc">Rt-Thread options --->
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RT-Thread Components --->
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C/C++ and POSIX layer --->
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||
(<span class="hl-number">8</span>) Set the <strong class="hl-keyword">default</strong> time zone (UTC+)</pre></div>
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</li><li class="- topic/li li" data-ofbid="d103337e210__20250121171537">
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<p class="- topic/p p" data-ofbid="d103337e212__20250121171537">保存 menuconfig 配置并退出。</p>
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</li><li class="- topic/li li" data-ofbid="d103337e215__20250121171537">
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<p class="- topic/p p" data-ofbid="d103337e217__20250121171537">执行 Shell 命令 <code class="+ topic/ph pr-d/codeph ph codeph">date</code>，查看输出信息，判断是否有时区配置。</p>
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<div class="- topic/p p" data-ofbid="d103337e223__20250121171537">如果系统输出中含有 <code class="+ topic/ph pr-d/codeph ph codeph">UTC+8</code> 字样，表示已经配置了 +8
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时区，示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rhv_cwh_bdc" data-ofbid="id__codeblock_rhv_cwh_bdc">date</pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rxd_lqz_sdc" data-ofbid="id__codeblock_rxd_lqz_sdc">local time: Sat May <span class="hl-number">2011</span>:<span class="hl-number">22</span>:<span class="hl-number">05</span> <span class="hl-number">2023</span>
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timestamps: <span class="hl-number">1684552925</span>
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||
timezone: UTC+<span class="hl-number">8</span></pre></div>
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||
<div class="- topic/p p" data-ofbid="d103337e233__20250121171537">此时，RTC 控制器中的时间信息和 <code class="+ topic/ph pr-d/codeph ph codeph">date</code> 时间存在一个时区差。
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||
关系如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_shv_cwh_bdc" data-ofbid="id__codeblock_shv_cwh_bdc">系统时间 = RTC 时间 + 时区</pre></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="#id__ref-to-lite-rtc-cfg" data-tocid="id__ref-to-lite-rtc-cfg">打开 RTC 驱动</a></div></li><li class="section-item"><div class="section-title"><a href="#id__rtc" data-tocid="id__rtc">配置 RTC 自定义参数</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id3" data-tocid="id__id3">配置时区</a></div></li></ul></div>
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