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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/watchdog/watchdog-interface-design-luban-lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">接口设计</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 3 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="watchdog_interface_design_luban_lite__driver" data-ofbid="watchdog_interface_design_luban_lite__driver"><h2 class="- topic/title title sectiontitle">Driver 层接口设计</h2>
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<div class="- topic/p p" data-ofbid="d274360e29__20250121171746">以下接口是 Watchdog
|
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设备驱动框架的标准接口。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="watchdog_interface_design_luban_lite__codeblock_ybb_sch_ddc" data-ofbid="watchdog_interface_design_luban_lite__codeblock_ybb_sch_ddc"><strong class="hl-keyword">struct</strong> rt_watchdog_ops
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{
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rt_err_t (*init)(rt_watchdog_t *wdt);
|
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rt_err_t (*control)(rt_watchdog_t *wdt, <strong class="hl-keyword">int</strong> cmd, <strong class="hl-keyword">void</strong> *arg);
|
||
};</pre></div>
|
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<div class="table-container"><table class="- topic/table table frame-all" id="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc" data-ofbid="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc" data-cols="2"><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">drv_wdt_init</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2">rt_err_t drv_wdt_init(rt_watchdog_t *wdt)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2">Watchdog 控制器的初始化</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="watchdog_interface_design_luban_lite__table_hl1_kxh_bdc__entry__2">-</td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="watchdog_interface_design_luban_lite__table_il1_kxh_bdc" data-ofbid="watchdog_interface_design_luban_lite__table_il1_kxh_bdc" data-cols="2"><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"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_wdt_control</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2">rt_err_t drv_wdt_control(rt_watchdog_t *wdt, int cmd, void
|
||
*args)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2">Watchdog 驱动的 ioctl 接口</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">wdt - 指向 Watchdog 设备</div>
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||
<div class="- topic/div div">cmd - ioctl 命令码</div>
|
||
<div class="- topic/div div">args - ioctl 命令相应的参数</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="watchdog_interface_design_luban_lite__table_il1_kxh_bdc__entry__2">-</td></tr></tbody></table></div>
|
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<div class="- topic/sectiondiv sectiondiv">
|
||
|
||
<p class="- topic/p p" data-ofbid="d274360e123__20250121171746">CMD 命令码可以用于控制 Watchdog 的行为，例如设置超时时间、获取剩余时间、刷新看门狗等。CMD 命令码详细定义描述如下：</p>
|
||
<ul class="- topic/ul ul" id="watchdog_interface_design_luban_lite__ul_amx_bfh_ddc" data-ofbid="watchdog_interface_design_luban_lite__ul_amx_bfh_ddc"><li class="- topic/li li" data-ofbid="d274360e127__20250121171746">标准命令码：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="watchdog_interface_design_luban_lite__codeblock_qgx_tch_ddc" data-ofbid="watchdog_interface_design_luban_lite__codeblock_qgx_tch_ddc">#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_GET_TIMEOUT (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">1</span>) <em class="hl-comment">/* get timeout(in seconds) */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_SET_TIMEOUT (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">2</span>) <em class="hl-comment">/* set timeout(in seconds) */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_GET_TIMELEFT (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">3</span>) <em class="hl-comment">/* get the left time before reboot(in seconds) */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_KEEPALIVE (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">4</span>) <em class="hl-comment">/* refresh watchdog */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_START (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">5</span>) <em class="hl-comment">/* start watchdog */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_STOP (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">6</span>) <em class="hl-comment">/* stop watchdog */</em></pre><p class="- topic/p p" data-ofbid="d274360e131__20250121171746">详见
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">rt-thread/components/drivers/include/watchdog.h</span>。</p></li><li class="- topic/li li" data-ofbid="d274360e136__20250121171746">AIC
|
||
特定的命令码<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="watchdog_interface_design_luban_lite__codeblock_z5h_5ch_ddc" data-ofbid="watchdog_interface_design_luban_lite__codeblock_z5h_5ch_ddc">#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_SET_IRQ_TIMEOUT (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">7</span>) <em class="hl-comment">/* set pretimeout(in seconds) */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_IRQ_ENABLE (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">8</span>) <em class="hl-comment">/* start pretreatment */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_IRQ_DISABLE (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">9</span>) <em class="hl-comment">/* stop pretreatment */</em>
|
||
#<span class="hl-directive">define</span> RT_DEVICE_CTRL_WDT_SET_CLR_THD (RT_DEVICE_CTRL_BASE(WDT) + <span class="hl-number">10</span>) <em class="hl-comment">/* set clear threshold */</em></pre><p class="- topic/p p" data-ofbid="d274360e140__20250121171746">详见
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">bsp/arcinchip/include/drv/aic_drv_wdt.h</span>。</p></li></ul>
|
||
</div>
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||
</section><section class="- topic/section section" id="watchdog_interface_design_luban_lite__section_nlc_dtg_f1c" data-ofbid="watchdog_interface_design_luban_lite__section_nlc_dtg_f1c"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
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||
<div class="- topic/p p" data-ofbid="d274360e152__20250121171746">HAL 层的函数接口声明存放在 hal_wdt.h
|
||
中，主要接口有：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="watchdog_interface_design_luban_lite__codeblock_lrp_dtg_f1c" data-ofbid="watchdog_interface_design_luban_lite__codeblock_lrp_dtg_f1c"><strong class="hl-keyword">void</strong> hal_wdt_op_clr(u32 thd);
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s32 hal_wdt_is_running(<strong class="hl-keyword">void</strong>);
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<strong class="hl-keyword">void</strong> hal_wdt_clr_thd_set(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
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||
<strong class="hl-keyword">void</strong> hal_wdt_irq_thd_set(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
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||
<strong class="hl-keyword">void</strong> hal_wdt_rst_thd_set(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
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||
<strong class="hl-keyword">void</strong> hal_wdt_switch_chan(<strong class="hl-keyword">int</strong> chan);
|
||
|
||
u32 hal_wdt_remain(<strong class="hl-keyword">struct</strong> aic_wdt *wdt);
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||
<strong class="hl-keyword">void</strong> hal_wdt_enable(u32 enable, u32 dbg_continue);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_irq_enable(u32 enable);
|
||
<strong class="hl-keyword">int</strong> hal_wdt_irq_sta(<strong class="hl-keyword">void</strong>);
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<strong class="hl-keyword">void</strong> hal_wdt_thd_get(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
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<strong class="hl-keyword">int</strong> hal_wdt_clr_int(<strong class="hl-keyword">void</strong>);
|
||
|
||
<strong class="hl-keyword">void</strong> hal_wdt_status_show(u32 ch);</pre></div>
|
||
</section><section class="- topic/section section" id="watchdog_interface_design_luban_lite__hal" data-ofbid="watchdog_interface_design_luban_lite__hal"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d274360e162__20250121171746">HAL 层的函数接口声明存放在 <span class="+ topic/ph sw-d/filepath ph filepath">hal_wdt.h</span>
|
||
中，主要接口有：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="watchdog_interface_design_luban_lite__codeblock_d5d_v2h_ddc" data-ofbid="watchdog_interface_design_luban_lite__codeblock_d5d_v2h_ddc"><strong class="hl-keyword">void</strong> hal_wdt_op_clr(u32 thd);
|
||
s32 hal_wdt_is_running(<strong class="hl-keyword">void</strong>);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_clr_thd_set(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_irq_thd_set(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_rst_thd_set(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_switch_chan(<strong class="hl-keyword">int</strong> chan);
|
||
|
||
u32 hal_wdt_remain(<strong class="hl-keyword">struct</strong> aic_wdt *wdt);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_enable(u32 enable, u32 dbg_continue);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_irq_enable(u32 enable);
|
||
<strong class="hl-keyword">int</strong> hal_wdt_irq_sta(<strong class="hl-keyword">void</strong>);
|
||
<strong class="hl-keyword">void</strong> hal_wdt_thd_get(u32 ch, <strong class="hl-keyword">struct</strong> aic_wdt *wdt);
|
||
<strong class="hl-keyword">int</strong> hal_wdt_clr_int(<strong class="hl-keyword">void</strong>);
|
||
|
||
<strong class="hl-keyword">void</strong> hal_wdt_status_show(u32 ch);</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="#watchdog_interface_design_luban_lite__driver" data-tocid="watchdog_interface_design_luban_lite__driver">Driver 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#watchdog_interface_design_luban_lite__section_nlc_dtg_f1c" data-tocid="watchdog_interface_design_luban_lite__section_nlc_dtg_f1c">HAL 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#watchdog_interface_design_luban_lite__hal" data-tocid="watchdog_interface_design_luban_lite__hal">HAL 层接口设计</a></div></li></ul></div>
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