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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/interrupt/interrupt_design_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
Read time: 3 minute(s)
</div><div class="- topic/body body"><section class="- topic/section section" id="id__id2" data-ofbid="id__id2"><h2 class="- topic/title title sectiontitle">源码说明</h2>
<p class="- topic/p p" data-ofbid="d278318e24__20250121171750">中断相关 <span class="+ topic/ph sw-d/filepath ph filepath">.c</span><span class="+ topic/ph sw-d/filepath ph filepath">.h</span> 文件分别位于
<span class="+ topic/ph sw-d/filepath ph filepath">luban-lite\kernel\common\include\osal\aic_osal_platform_lbl.h</span>
<span class="+ topic/ph sw-d/filepath ph filepath">luban-lite\bsp\artinchip\sys\dxxx\</span> 目录。主要源文件说明如下:</p><div class="table-container"><table class="- topic/table table frame-all" id="id__table_f4b_5cd_bdc" data-ofbid="id__table_f4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:35.587188612099645%"/><col style="width:64.41281138790036%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_f4b_5cd_bdc__entry__1">文件</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_f4b_5cd_bdc__entry__2">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_f4b_5cd_bdc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_osal_platform_lbl.h</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_f4b_5cd_bdc__entry__2">aicos 层中断注册 &amp; 使能函数</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_f4b_5cd_bdc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_drv_irq.c</span></td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_f4b_5cd_bdc__entry__2">drv 层中断的实现</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_f4b_5cd_bdc__entry__1"><span class="+ topic/ph sw-d/filepath ph filepath">aic_drv_gpio.c</span></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_f4b_5cd_bdc__entry__2">drv 层 GPIO 中断的扩展</td></tr></tbody></table></div></section><section class="- topic/section section" id="id__id4" data-ofbid="id__id4"><h2 class="- topic/title title sectiontitle">普通中断原理</h2>
<p class="- topic/p p" data-ofbid="d278318e73__20250121171750">普通中断来说实现的原理较为简单,包括两个核心数组 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span>
<span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqdata[]</span> ,分别用来存储中断处理函数的函数指针和附加数据。对应具体操作如下:</p>
<ul class="- topic/ul ul simple" id="id__ul_g4b_5cd_bdc" data-ofbid="id__ul_g4b_5cd_bdc"><li class="- topic/li li" data-ofbid="d278318e83__20250121171750">
<div class="- topic/p p" data-ofbid="d278318e85__20250121171750"><strong class="+ topic/ph hi-d/b ph b">中断注册</strong><ol class="- topic/ol ol" id="id__ol_g4v_cvn_mdc" data-ofbid="id__ol_g4v_cvn_mdc"><li class="- topic/li li" data-ofbid="d278318e90__20250121171750">
<p class="- topic/p p" data-ofbid="d278318e92__20250121171750">用户调用 <span class="+ topic/keyword pr-d/apiname keyword apiname">aicos_request_irq()</span></p>
</li><li class="- topic/li li" data-ofbid="d278318e98__20250121171750">
<p class="- topic/p p" data-ofbid="d278318e100__20250121171750">根据中断号将中断处理函数和附加数据存入 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span>
<span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqdata[]</span> 数组。</p>
</li></ol></div>
</li><li class="- topic/li li" data-ofbid="d278318e110__20250121171750">
<div class="- topic/p p" data-ofbid="d278318e112__20250121171750"><strong class="+ topic/ph hi-d/b ph b">中断处理</strong><ol class="- topic/ol ol" id="id__ol_n1x_y5n_mdc" data-ofbid="id__ol_n1x_y5n_mdc"><li class="- topic/li li" data-ofbid="d278318e117__20250121171750">中断发生后,所有中断首先会跳入 <span class="+ topic/keyword pr-d/apiname keyword apiname">Default_IRQHandler()</span>
通用中断处理函数中。</li><li class="- topic/li li" data-ofbid="d278318e122__20250121171750">根据 <span class="+ topic/keyword pr-d/parmname keyword parmname">MCAUSE</span> 寄存器查询当前的中断号。</li><li class="- topic/li li" data-ofbid="d278318e127__20250121171750">根据中断号在 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span><span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqdata[]</span>
数组中查询具体的中断处理函数指针和附加数据。</li><li class="- topic/li li" data-ofbid="d278318e135__20250121171750">跳转到具体 ISR 中执行中断。</li></ol></div>
</li></ul>
<figure class="- topic/fig fig fignone" id="id__fig_zds_nsl_hdc" data-ofbid="id__fig_zds_nsl_hdc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_h4b_5cd_bdc" src="../../../images/interrupt/int_fw.png" width="576" alt="int_fw"/></div><br/></figure>
</section><section class="- topic/section section" id="id__gpio" data-ofbid="id__gpio"><h2 class="- topic/title title sectiontitle">GPIO 中断原理</h2>
<p class="- topic/p p" data-ofbid="d278318e149__20250121171750">在 GPIO 中,一个 Group 只能共享一个中断且一个 Group 最多包含 32 个 Pin。然而用户要求对每个 Pin 单独注册中断处理函数,因此需要对
GPIO Pin 二级中断进行特殊处理。这种设计既能实现功能又能让用户零感知。具体中断原理如下:</p>
<ul class="- topic/ul ul simple" id="id__ul_i4b_5cd_bdc" data-ofbid="id__ul_i4b_5cd_bdc"><li class="- topic/li li" data-ofbid="d278318e153__20250121171750">
<p class="- topic/p p" data-ofbid="d278318e155__20250121171750">扩大 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span><span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqdata[]</span> 数组,让每个 GPIO
Pin 中断都拥有独立的存放位置,同时保持一级中断和二级中断格式一致。</p>
</li><li class="- topic/li li" data-ofbid="d278318e164__20250121171750">
<p class="- topic/p p" data-ofbid="d278318e166__20250121171750">中断注册。在 RT-Thread 下,使用 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_pin_attach_irq()</span> 函数注册 GPIO Pin
中断,且使用 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_pin_irq_enable()</span> 函数使能 GPIO Pin 中断。</p>
</li><li class="- topic/li li" data-ofbid="d278318e175__20250121171750">
<p class="- topic/p p" data-ofbid="d278318e177__20250121171750">处断处理。GPIO Pin 发生中断后,首先跳转到一级中断处理函数
<span class="+ topic/keyword pr-d/apiname keyword apiname">drv_gpio_group_irqhandler()</span> 中执行,通过查询发生中断的 Group 和 Pin
Offset最终在 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span><span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqdata[]</span>
数组中查询到具体的中断处理函数指针和附加数据。最后,到具体 ISR 中执行中断。</p>
</li></ul>
<figure class="- topic/fig fig fignone" id="id__fig_a2s_nsl_hdc" data-ofbid="id__fig_a2s_nsl_hdc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_j4b_5cd_bdc" src="../../../images/interrupt/gpio_int_ext.png" width="576" alt="gpio_int_ext"/></div><br/></figure>
</section></div><article class="- topic/topic topic nested1" aria-labelledby="ariaid-title2" id="topic_f4m_ksl_hdc"><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/interrupt/interrupt_design_guide.dita">Edit online</a></span><h2 class="- topic/title title topictitle2" id="ariaid-title2">数据结构设计</h2><div class="- topic/body body"><div class="- topic/p p" data-ofbid="d278318e216__20250121171750">中断模块关键结构体定义如下:<div class="- topic/div div"><strong class="+ topic/ph hi-d/b ph b">irq_handler_t/pin_irq_handler_t</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="topic_f4m_ksl_hdc__codeblock_jdm_btj_bdc" data-ofbid="topic_f4m_ksl_hdc__codeblock_jdm_btj_bdc"><strong class="hl-keyword">enum</strong> irqreturn
{
IRQ_NONE = (<span class="hl-number">0</span> &lt;&lt; <span class="hl-number">0</span>),
IRQ_HANDLED = (<span class="hl-number">1</span> &lt;&lt; <span class="hl-number">0</span>),
IRQ_WAKE_THREAD = (<span class="hl-number">1</span> &lt;&lt; <span class="hl-number">1</span>),
};
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong> irqreturn irqreturn_t;
<strong class="hl-keyword">typedef</strong> irqreturn_t (*irq_handler_t)(<strong class="hl-keyword">int</strong>, <strong class="hl-keyword">void</strong> *);
<strong class="hl-keyword">typedef</strong> irqreturn_t (*pin_irq_handler_t)(<strong class="hl-keyword">void</strong> *);</pre></div></div></div></article><article class="- topic/topic topic nested1" aria-labelledby="ariaid-title3" id="topic_vpz_hsl_hdc"><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/interrupt/interrupt_design_guide.dita">Edit online</a></span><h2 class="- topic/title title topictitle2" id="ariaid-title3">接口设计</h2><div class="- topic/body body"><section class="- topic/section section" id="topic_vpz_hsl_hdc__aicos-irq-api" data-ofbid="topic_vpz_hsl_hdc__aicos-irq-api"><h3 class="- topic/title title sectiontitle">AICOS IRQ API</h3>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_l4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_l4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_request_irq</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="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__2">int aicos_request_irq (unsigned int irq, irq_handler_t
handler, unsigned int flags, const char *name, void
*data)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__2">注册中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__2">
<div class="- topic/div div">
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">irq</span> :中断号</div>
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">handler</span> :中断处理函数</div>
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">flags</span> :中断标志</div>
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">name</span> :中断号名称</div>
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">data</span> :中断附加数据</div>
</div>
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__2">操作是否成功 (0=OK, other=Error)</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_l4b_5cd_bdc__entry__2">- </td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_m4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_m4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_enable</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="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__2">void aicos_irq_enable(unsigned int irq)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__2">使能中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__2"><span class="+ topic/keyword pr-d/parmname keyword parmname">irq</span> :中断号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_m4b_5cd_bdc__entry__2">- </td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_n4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_n4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_disable</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="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__2">void aicos_irq_disable(unsigned int irq)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__2">关闭中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__2"><span class="+ topic/keyword pr-d/parmname keyword parmname">irq</span> :中断号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_n4b_5cd_bdc__entry__2">- </td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_o4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_o4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_local_irq_enable</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="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__2">void aicos_local_irq_enable(void)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__2">使能 CPU 全局中断中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_o4b_5cd_bdc__entry__2">-</td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_p4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_p4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 6</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_local_irq_disable</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="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__2">void aicos_local_irq_disable(void)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__2">关闭 CPU 全局中断中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_p4b_5cd_bdc__entry__2">-</td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_q4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_q4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 7</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_set_prio</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="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__2">void aicos_irq_set_prio(unsigned int irq, unsigned int
priority)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__2">设置中断优先级</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__2">
<div class="- topic/div div">
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">irq</span> :中断号</div>
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">priority</span> :中断优先级</div>
</div>
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_q4b_5cd_bdc__entry__2">- </td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_r4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_r4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 8</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_get_prio</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="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__2">unsigned int aicos_irq_get_prio(unsigned int irq)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__2">获取中断优先级</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__2"><span class="+ topic/keyword pr-d/parmname keyword parmname">irq</span> :中断号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__2">中断优先级</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_r4b_5cd_bdc__entry__2">- </td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_s4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_s4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 9</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_set_threshold</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="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__2">void aicos_irq_set_threshold(unsigned int threshold)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__2">设置中断优先级门限,大于该优先级的中断才会被响应</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_s4b_5cd_bdc__entry__2">- </td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_t4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_t4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 10</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_get_threshold</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="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__2">unsigned int aicos_irq_get_threshold(void)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__2">获取中断优先级门限</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__2"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__2">中断优先级门限</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_t4b_5cd_bdc__entry__2">-</td></tr></tbody></table></div>
</section><section class="- topic/section section" id="topic_vpz_hsl_hdc__rtt-gpio-irq-api" data-ofbid="topic_vpz_hsl_hdc__rtt-gpio-irq-api"><h3 class="- topic/title title sectiontitle">RTT GPIO IRQ API</h3>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_u4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_u4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 11</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">rt_pin_attach_irq</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="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__2">rt_err_t rt_pin_attach_irq (rt_int32_t pin, rt_uint32_t mode,
void (*hdr)(void *args), void *args)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__2">注册 GPIO pin 中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__2">
<div class="- topic/div div">
<p class="- topic/p p" data-ofbid="d278318e616__20250121171750"><span class="+ topic/keyword pr-d/parmname keyword parmname">pin</span> pin 管脚编号</p>
<p class="- topic/p p" data-ofbid="d278318e621__20250121171750"><span class="+ topic/keyword pr-d/parmname keyword parmname">mode</span> pin 中断模式,上升下降沿、高低电平</p>
<p class="- topic/p p" data-ofbid="d278318e626__20250121171750"><span class="+ topic/keyword pr-d/parmname keyword parmname">hdr</span> pin 中断处理函数</p>
<p class="- topic/p p" data-ofbid="d278318e631__20250121171750"><span class="+ topic/keyword pr-d/parmname keyword parmname">args</span> pin 中断附加数据</p>
</div>
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__2">操作是否成功 (0=OK, other=Error)</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_u4b_5cd_bdc__entry__2">-</td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_v4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_v4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 12</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">rt_pin_detach_irq</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="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__2">rt_err_t rt_pin_detach_irq(rt_int32_t pin)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__2">注销 GPIO pin 中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__2"><span class="+ topic/keyword pr-d/parmname keyword parmname">pin</span> pin 管脚编号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__2">操作是否成功 (0=OK, other=Error)</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_v4b_5cd_bdc__entry__2">-</td></tr></tbody></table></div>
<div class="table-container"><table class="- topic/table table frame-all" id="topic_vpz_hsl_hdc__table_w4b_5cd_bdc" data-ofbid="topic_vpz_hsl_hdc__table_w4b_5cd_bdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label"><span class="table--title-label-number"> 13</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">rt_pin_irq_enable</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="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__2">rt_err_t rt_pin_irq_enable(rt_base_t pin, rt_uint32_t
enabled)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__2">使能/关闭 GPIO pin 中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__2">
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">pin</span> pin 管脚编号</div>
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">enabled</span> :使能/关闭</div>
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__2">操作是否成功 (0=OK, other=Error)</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="topic_vpz_hsl_hdc__table_w4b_5cd_bdc__entry__2">-</td></tr></tbody></table></div>
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