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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/interrupt/interrupt-user-guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Interrupt 使用指南</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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|
||
</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d181364e24__20250121171625">Interrupt 相关 <span class="+ topic/ph sw-d/filepath ph filepath">.c</span> 和 <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> 和
|
||
<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="system_interrupt_user_guide__table_an5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_an5_ry2_f1c" data-cols="2"><caption></caption><colgroup><col style="width:50%"/><col style="width:50%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_an5_ry2_f1c__entry__1">文件</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_an5_ry2_f1c__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="system_interrupt_user_guide__table_an5_ry2_f1c__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="system_interrupt_user_guide__table_an5_ry2_f1c__entry__2">aicos 层中断 注册 & 使能 函数</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_an5_ry2_f1c__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="system_interrupt_user_guide__table_an5_ry2_f1c__entry__2">drv 层 interrupt 的实现</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="system_interrupt_user_guide__table_an5_ry2_f1c__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="system_interrupt_user_guide__table_an5_ry2_f1c__entry__2">drv 层 gpio 中断的扩展</td></tr></tbody></table></div><section class="- topic/section section" id="system_interrupt_user_guide__section_bn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__section_bn5_ry2_f1c"><h2 class="- topic/title title sectiontitle">模块架构</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d181364e72__20250121171625">
|
||
<ul class="- topic/ul ul" id="system_interrupt_user_guide__ul_rbz_ty2_f1c" data-ofbid="system_interrupt_user_guide__ul_rbz_ty2_f1c"><li class="- topic/li li" data-ofbid="d181364e75__20250121171625">普通中断<div class="- topic/p p" data-ofbid="d181364e77__20250121171625">对于普通中断来说实现的原理非常简单，核心就是两个数组 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span> 和
|
||
<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：<ul class="- topic/ul ul" id="system_interrupt_user_guide__ul_cn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__ul_cn5_ry2_f1c"><li class="- topic/li li" data-ofbid="d181364e86__20250121171625">
|
||
<p class="- topic/p p" data-ofbid="d181364e88__20250121171625">中断注册。用户调用 <span class="+ topic/keyword pr-d/apiname keyword apiname">aicos_request_irq()</span>
|
||
根据中断号把中断处理函数和附加数据存入到 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span> 和
|
||
<span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqdata[]</span> 数组。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d181364e100__20250121171625">
|
||
<p class="- topic/p p" data-ofbid="d181364e102__20250121171625">中断处理。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，然后根据 <span class="+ topic/keyword pr-d/apiname keyword apiname">MCAUSE</span> 寄存器查询当前的中断号，根据中断号在
|
||
<span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span> 和
|
||
<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，然后再跳转到具体 ISR 中执行。</p>
|
||
</li></ul></div><div class="- topic/p p" data-ofbid="d181364e117__20250121171625"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="system_interrupt_user_guide__image_dn5_ry2_f1c" src="../../../images/interrupt/int_fw.png" alt="int_fw"/></div><br/></div></li><li class="- topic/li li" data-ofbid="d181364e121__20250121171625">GPIO 中断<p class="- topic/p p" data-ofbid="d181364e123__20250121171625">GPIO 中断的实现稍有不同。因为 GPIO 一个 Group 只能共享一个中断（一个 Group 最多包含 32 个
|
||
Pin），但是用户要求对每个 Pin 单独的注册中断处理函数，所以需要对 GPIO Pin
|
||
二级中断进行特殊处理。既能实现功能又能让用户零感知。具体做法如下：</p><ul class="- topic/ul ul" id="system_interrupt_user_guide__ul_fn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__ul_fn5_ry2_f1c"><li class="- topic/li li" data-ofbid="d181364e126__20250121171625">
|
||
<p class="- topic/p p" data-ofbid="d181364e128__20250121171625">扩大 <span class="+ topic/keyword pr-d/apiname keyword apiname">g_irqvector[]</span> 和 <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，另外也可以做到对一级中断和二级中断格式一样。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d181364e137__20250121171625">
|
||
<p class="- topic/p p" data-ofbid="d181364e139__20250121171625">中断注册。目前在 rt-thread 下可以使用 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_pin_attach_irq()</span>
|
||
函数来注册 GPIO Pin 中断，使用 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_pin_irq_enable()</span> 函数来使能
|
||
GPIO Pin 中断。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d181364e148__20250121171625"><p class="- topic/p p" data-ofbid="d181364e149__20250121171625">处断处理。GPIO Pin 发生中断以后，首先会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> 和
|
||
<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，然后再跳转到具体
|
||
ISR 中执行。</p><div class="- topic/p p" data-ofbid="d181364e160__20250121171625"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="system_interrupt_user_guide__image_gn5_ry2_f1c" src="../../../images/interrupt/gpio_int_ext.png" alt="gpio_int_ext"/></div><br/></div></li></ul><p class="- topic/p p" data-ofbid="d181364e164__20250121171625">CMU 驱动的逻辑比较简单，目前只在 HAL 层提供了 Clock 和 Reset 的 API 接口。RTOS 驱动和
|
||
Baremetal 驱动都可以直接使用。</p></li></ul>
|
||
</div>
|
||
</section><section class="- topic/section section" id="system_interrupt_user_guide__section_hn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__section_hn5_ry2_f1c"><h2 class="- topic/title title sectiontitle">数据结构设计</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d181364e173__20250121171625">Interrupt 模块关键结构体定义如下：</p>
|
||
<p class="- topic/p p" data-ofbid="d181364e176__20250121171625"><strong class="+ topic/ph hi-d/b ph b">irq_handler_t/pin_irq_handler_t</strong></p>
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="system_interrupt_user_guide__codeblock_dx1_yy2_f1c" data-ofbid="system_interrupt_user_guide__codeblock_dx1_yy2_f1c"><strong class="hl-keyword">enum</strong> irqreturn
|
||
{
|
||
IRQ_NONE = (<span class="hl-number">0</span> << <span class="hl-number">0</span>),
|
||
IRQ_HANDLED = (<span class="hl-number">1</span> << <span class="hl-number">0</span>),
|
||
IRQ_WAKE_THREAD = (<span class="hl-number">1</span> << <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>
|
||
</section><section class="- topic/section section" id="system_interrupt_user_guide__section_ltc_zy2_f1c" data-ofbid="system_interrupt_user_guide__section_ltc_zy2_f1c"><h2 class="- topic/title title sectiontitle">接口设计</h2>
|
||
|
||
<div class="- topic/div div"><strong class="+ topic/ph hi-d/b ph b">AICOS Irq API</strong><div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_jn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_jn5_ry2_f1c" 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">aicos_request_irq</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_jn5_ry2_f1c__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="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__2">注册中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__2">irq ：中断号 handler：中断处理函数 flags ：中断标志 name ：中断号名称 data
|
||
：中断附加数据</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_jn5_ry2_f1c__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="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_jn5_ry2_f1c__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_kn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_kn5_ry2_f1c" 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">aicos_irq_enable</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_kn5_ry2_f1c__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="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__2">使能中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__2">irq：中断号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_kn5_ry2_f1c__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_ln5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_ln5_ry2_f1c" 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"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_irq_disable</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_ln5_ry2_f1c__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="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__2">关闭中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__2">irq：中断号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_ln5_ry2_f1c__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_mn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_mn5_ry2_f1c" 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"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_local_irq_enable</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_mn5_ry2_f1c__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="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_mn5_ry2_f1c__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="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_mn5_ry2_f1c__entry__2">-</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_nn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_nn5_ry2_f1c" 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"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aicos_local_irq_disable</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_nn5_ry2_f1c__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="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_nn5_ry2_f1c__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="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_nn5_ry2_f1c__entry__2">-</td></tr></tbody></table></div></div>
|
||
<div class="- topic/div div">
|
||
<p class="- topic/p p" data-ofbid="d181364e359__20250121171625"><strong class="+ topic/ph hi-d/b ph b">RTT GPIO Irq API</strong></p>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_on5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_on5_ry2_f1c" 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"> 6</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">rt_pin_attach_irq</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_on5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_on5_ry2_f1c__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="system_interrupt_user_guide__table_on5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_on5_ry2_f1c__entry__2">注册 gpio pin 中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_on5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_on5_ry2_f1c__entry__2">pin ：pin 管脚编号 mode：pin 中断模式，上升下降沿、高低电平 hdr ：pin 中断处理函数
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args：pin 中断附加数据</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_on5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_on5_ry2_f1c__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="system_interrupt_user_guide__table_on5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_on5_ry2_f1c__entry__2">-</td></tr></tbody></table></div>
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<div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_pn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_pn5_ry2_f1c" 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"> 7</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">rt_pin_detach_irq</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_pn5_ry2_f1c__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="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__2">注销 gpio pin 中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__2">pin：pin 管脚编号</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_pn5_ry2_f1c__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="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_pn5_ry2_f1c__entry__2">-</td></tr></tbody></table></div>
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<div class="table-container"><table class="- topic/table table frame-all" id="system_interrupt_user_guide__table_qn5_ry2_f1c" data-ofbid="system_interrupt_user_guide__table_qn5_ry2_f1c" 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"> 8</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">rt_pin_irq_enable</span></caption><colgroup><col style="width:25%"/><col style="width:75%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="system_interrupt_user_guide__table_qn5_ry2_f1c__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="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_qn5_ry2_f1c__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="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__1">参数</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__2">pin ：pin 管脚编号 enabled：使能/关闭</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="system_interrupt_user_guide__table_qn5_ry2_f1c__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="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="system_interrupt_user_guide__table_qn5_ry2_f1c__entry__2">-</td></tr></tbody></table></div>
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