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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/gpio/gpio_design.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: 6 minute(s)
|
||
</div><div class="- topic/body body"><section class="- topic/section section" id="id__section_xr2_lc3_fdc" data-ofbid="id__section_xr2_lc3_fdc"><h2 class="- topic/title title sectiontitle">源码说明</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d171263e24__20250121171621">GPIO HAL 层相关 <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\bsp\artinchip\hal\gpio</span> 和
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">luban-lite\bsp\artinchip\include\hal</span> 目录。 Driver 层相关
|
||
<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\bsp\artinchip\drv\gpio</span> 和
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">luban-lite\bsp\artinchip\include\drv</span> 目录。 主要源文件说明如下：<div class="table-container"><table class="- topic/table table frame-all" id="id__table_trp_lc3_fdc" data-ofbid="id__table_trp_lc3_fdc" 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"></span></caption><colgroup><col style="width:37.03703703703704%"/><col style="width:62.962962962962955%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_trp_lc3_fdc__entry__1">文件</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_trp_lc3_fdc__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_trp_lc3_fdc__entry__1">aic_hal_gpio.h</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_trp_lc3_fdc__entry__2">GPIO HAL 层 API 的头文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_trp_lc3_fdc__entry__1">aic_hal_gpio.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_trp_lc3_fdc__entry__2">GPIO HAL 层 API 的实现</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_trp_lc3_fdc__entry__1">aic_drv_gpio.h</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_trp_lc3_fdc__entry__2">GPIO DRV 层 API 的头文件</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_trp_lc3_fdc__entry__1">aic_drv_gpio.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_trp_lc3_fdc__entry__2">GPIO driver 注册以及 GPIO DRV 层 API 的实现</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_trp_lc3_fdc__entry__1">aic_hal_gpio_def_v10.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_trp_lc3_fdc__entry__2">GPIO V1.0 的配置</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_trp_lc3_fdc__entry__1">aic_hal_gpio_def_v11.c</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_trp_lc3_fdc__entry__2">GPIO V1.1 的配置</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_trp_lc3_fdc__entry__1">aic_hal_gpio_def_v12.c</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_trp_lc3_fdc__entry__2">GPIO V1.2 的配置</td></tr></tbody></table></div></div>
|
||
</section><section class="- topic/section section" id="id__section_rxw_gpf_fdc" data-ofbid="id__section_rxw_gpf_fdc"><h2 class="- topic/title title sectiontitle">模块架构</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d171263e104__20250121171621">GPIO 驱动 Driver 层采用 RT-Thread 的 PIN 设备驱动框架，如果只使用 HAL 层也可以支持 Baremetal 方式的应用场景。</p>
|
||
<figure class="- topic/fig fig fignone" id="id__fig_lb5_lc3_fdc" data-ofbid="id__fig_lb5_lc3_fdc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_mb5_lc3_fdc" src="../../../images/gpio/gpio_sw_system.png" alt="sw_system21"/></div><br/></figure>
|
||
<ol class="- topic/ol ol arabic" id="id__ol_nb5_lc3_fdc" data-ofbid="id__ol_nb5_lc3_fdc"><li class="- topic/li li" data-ofbid="d171263e113__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e115__20250121171621">GPIO HAL 层。提供了 PinMux 和通用 GPIO 功能寄存器级的功能封装。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d171263e118__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e120__20250121171621">GPIO Driver 层。</p>
|
||
<ul class="- topic/ul ul simple" id="id__ul_pb5_lc3_fdc" data-ofbid="id__ul_pb5_lc3_fdc"><li class="- topic/li li" data-ofbid="d171263e124__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e126__20250121171621">RT-Thread。通用 GPIO 功能注册成 RTT Pin driver，PinMux 直接以 API 的形式提供。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d171263e129__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e131__20250121171621">BareMental。用户自定义 Driver 直接调用 GPIO HAL 层 API。</p>
|
||
</li></ul>
|
||
</li></ol>
|
||
<div class="- topic/div div section" id="id__rtt-pin">
|
||
<strong class="+ topic/ph hi-d/b ph b">RTT Pin 驱动</strong>
|
||
<p class="- topic/p p" data-ofbid="d171263e141__20250121171621">RT-Thread 调用 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_device_pin_register()</span> 把通用 GPIO 功能注册成 Pin
|
||
Driver，Pin Driver 提供了以下功能：</p><ul class="- topic/ul ul simple" id="id__ul_qb5_lc3_fdc" data-ofbid="id__ul_qb5_lc3_fdc"><li class="- topic/li li" data-ofbid="d171263e147__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e149__20250121171621">模式配置。配置输入、输出模式，输入上下拉配置。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d171263e152__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e154__20250121171621">读取端口状态。读取输入端口的电平状态。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d171263e157__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e159__20250121171621">设置端口状态。配置输出端口的电平状态。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d171263e162__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e164__20250121171621">GPIO 中断配置。注册中断，使能中断。</p>
|
||
</li></ul><p class="- topic/p p" data-ofbid="d171263e167__20250121171621">因为一个系统只允许注册一个 Pin Device，所以在调用的时候除了先使用 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_device_find()</span> 查找
|
||
Device 的形式来调用功能，也可以直接使用一组 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_pin_xxx()</span> 的函数直接来调用功能。</p>
|
||
</div>
|
||
</section><section class="- topic/section section" id="id__section_wcj_pc3_fdc" data-ofbid="id__section_wcj_pc3_fdc"><h2 class="- topic/title title sectiontitle">关键流程设计</h2>
|
||
|
||
<div class="- topic/div div section" id="id__id5">
|
||
<strong class="+ topic/ph hi-d/b ph b">初始化流程</strong>
|
||
<p class="- topic/p p" data-ofbid="d171263e187__20250121171621">RT-Thread 系统初始化时会自动调用 GPIO
|
||
驱动初始化函数：</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rb5_lc3_fdc" data-ofbid="id__codeblock_rb5_lc3_fdc">Reset_Handler
|
||
→ entry()
|
||
→ rtthread_startup()
|
||
→ rt_hw_board_init()
|
||
→ rt_components_board_init()
|
||
→ drv_pin_init()
|
||
</pre><div class="- topic/p p" data-ofbid="d171263e191__20250121171621">drv_pin_init() 注册了 RTT Pin
|
||
驱动：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_wjp_qc3_fdc" data-ofbid="id__codeblock_wjp_qc3_fdc"><strong class="hl-keyword">const</strong> <strong class="hl-keyword">static</strong> <strong class="hl-keyword">struct</strong> rt_pin_ops _drv_pin_ops =
|
||
{
|
||
drv_pin_mode,
|
||
drv_pin_write,
|
||
drv_pin_read,
|
||
#ifdef AIC_GPIO_IRQ_DRV_EN
|
||
drv_pin_attach_irq,
|
||
drv_pin_detach_irq,
|
||
drv_pin_irq_enable,
|
||
#<strong class="hl-keyword">else</strong>
|
||
RT_NULL,
|
||
RT_NULL,
|
||
RT_NULL,
|
||
#endif
|
||
drv_pin_get,
|
||
};
|
||
|
||
<strong class="hl-keyword">int</strong> drv_pin_init(<strong class="hl-keyword">void</strong>)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = RT_EOK;
|
||
|
||
ret = rt_device_pin_register(<span class="hl-string">"pin"</span>, &_drv_pin_ops, RT_NULL);
|
||
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
INIT_BOARD_EXPORT(drv_pin_init);</pre></div></div>
|
||
<div class="- topic/div div section" id="id__gpio-irq">
|
||
<strong class="+ topic/ph hi-d/b ph b">GPIO IRQ 流程</strong>
|
||
<figure class="- topic/fig fig fignone" id="id__fig_sb5_lc3_fdc" data-ofbid="id__fig_sb5_lc3_fdc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_tb5_lc3_fdc" src="../../../images/gpio/gpio_irq.png" alt="gpio_irq"/></div><br/></figure>
|
||
<div class="- topic/p p" data-ofbid="d171263e206__20250121171621"><span class="- topic/ph ph">Luban-Lite</span> 对 GPIO IRQ 做了一个二级中断的封装：<ol class="- topic/ol ol arabic simple" id="id__ol_ub5_lc3_fdc" data-ofbid="id__ol_ub5_lc3_fdc"><li class="- topic/li li" data-ofbid="d171263e211__20250121171621">一级中断。每个 GPIO Group 共享一个物理中断号，每个 GPIO Group 最多包含 32 个 GPIO Pin 脚。</li><li class="- topic/li li" data-ofbid="d171263e213__20250121171621">
|
||
<p class="- topic/p p" data-ofbid="d171263e215__20250121171621">二级中断。每个 GPIO Pin 脚中断也虚拟成标准的 <span class="- topic/ph ph">Luban-Lite</span> 中断，但是实际上是 GPIO Group ISR
|
||
做了一次中转。</p>
|
||
</li></ol></div></div>
|
||
</section><section class="- topic/section section" id="id__section_jfy_rc3_fdc" data-ofbid="id__section_jfy_rc3_fdc"><h2 class="- topic/title title sectiontitle">接口设计</h2>
|
||
|
||
<div class="- topic/div div section" id="id__driver">
|
||
<strong class="+ topic/ph hi-d/b ph b">Driver 层接口设计</strong>
|
||
<div class="- topic/p p" data-ofbid="d171263e232__20250121171621">以下接口是 Pin 设备驱动框架的标准接口。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_vnt_sc3_fdc" data-ofbid="id__codeblock_vnt_sc3_fdc"><strong class="hl-keyword">struct</strong> rt_pin_ops
|
||
{
|
||
<strong class="hl-keyword">void</strong> (*pin_mode)(<strong class="hl-keyword">struct</strong> rt_device *device, rt_base_t pin, rt_base_t mode);
|
||
<strong class="hl-keyword">void</strong> (*pin_write)(<strong class="hl-keyword">struct</strong> rt_device *device, rt_base_t pin, rt_base_t value);
|
||
<strong class="hl-keyword">int</strong> (*pin_read)(<strong class="hl-keyword">struct</strong> rt_device *device, rt_base_t pin);
|
||
rt_err_t (*pin_attach_irq)(<strong class="hl-keyword">struct</strong> rt_device *device, rt_int32_t pin,
|
||
rt_uint32_t mode, <strong class="hl-keyword">void</strong> (*hdr)(<strong class="hl-keyword">void</strong> *args), <strong class="hl-keyword">void</strong> *args);
|
||
rt_err_t (*pin_detach_irq)(<strong class="hl-keyword">struct</strong> rt_device *device, rt_int32_t pin);
|
||
rt_err_t (*pin_irq_enable)(<strong class="hl-keyword">struct</strong> rt_device *device, rt_base_t pin, rt_uint32_t enabled);
|
||
rt_base_t (*pin_get)(<strong class="hl-keyword">const</strong> <strong class="hl-keyword">char</strong> *name);
|
||
};</pre></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_vb5_lc3_fdc" data-ofbid="id__table_vb5_lc3_fdc" 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_pin_mode</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="id__table_vb5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_vb5_lc3_fdc__entry__2">void drv_pin_mode(struct rt_device *device, rt_base_t pin,
|
||
rt_base_t mode)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_vb5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_vb5_lc3_fdc__entry__2">设置 Pin 模式，包括输入/输出模式、上下拉模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_vb5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_vb5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">pin：Pin id</div>
|
||
<div class="- topic/div div">mode: 输入/输出模式、上下拉模式 (PIN_MODE_xxx 格式的宏)</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_vb5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_vb5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_wb5_lc3_fdc" data-ofbid="id__table_wb5_lc3_fdc" 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">drv_pin_write</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="id__table_wb5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_wb5_lc3_fdc__entry__2">void drv_pin_write(struct rt_device *device, rt_base_t pin,
|
||
rt_base_t value)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wb5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wb5_lc3_fdc__entry__2">设置输出 Pin 的电平状态</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_wb5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_wb5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">pin：Pin id</div>
|
||
<div class="- topic/div div">value: 电平状态 0/1</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_wb5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_wb5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_xb5_lc3_fdc" data-ofbid="id__table_xb5_lc3_fdc" 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">drv_pin_read</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="id__table_xb5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_xb5_lc3_fdc__entry__2">int drv_pin_read(struct rt_device *device, rt_base_t
|
||
pin)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_xb5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_xb5_lc3_fdc__entry__2">设置输出 Pin 的电平状态</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_xb5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_xb5_lc3_fdc__entry__2">pin：Pin id</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_xb5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_xb5_lc3_fdc__entry__2">电平状态 0/1</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_xb5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_xb5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_yb5_lc3_fdc" data-ofbid="id__table_yb5_lc3_fdc" 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">drv_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="id__table_yb5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_yb5_lc3_fdc__entry__2">rt_err_t drv_pin_attach_irq(struct rt_device *device,
|
||
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="id__table_yb5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_yb5_lc3_fdc__entry__2">Pin 注册中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_yb5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_yb5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">pin：Pin id</div>
|
||
<div class="- topic/div div">mode: 中断触发模式，边沿还是电平触发 (PIN_IRQ_MODE_xxx 格式的宏)</div>
|
||
<div class="- topic/div div">hdr：pin 中断处理函数</div>
|
||
<div class="- topic/div div"> args：中断处理时的自定义参数</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_yb5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_yb5_lc3_fdc__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="id__table_yb5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_yb5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_zb5_lc3_fdc" data-ofbid="id__table_zb5_lc3_fdc" 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">drv_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="id__table_zb5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_zb5_lc3_fdc__entry__2">rt_err_t drv_pin_detach_irq(struct rt_device *device,
|
||
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="id__table_zb5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_zb5_lc3_fdc__entry__2">Pin 注销中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_zb5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_zb5_lc3_fdc__entry__2">pin：Pin id</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_zb5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_zb5_lc3_fdc__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="id__table_zb5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_zb5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_ac5_lc3_fdc" data-ofbid="id__table_ac5_lc3_fdc" 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">drv_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="id__table_ac5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ac5_lc3_fdc__entry__2">rt_err_t drv_pin_irq_enable(struct rt_device *device,
|
||
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="id__table_ac5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ac5_lc3_fdc__entry__2">使能 Pin 中断</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ac5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ac5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">pin：Pin id</div>
|
||
<div class="- topic/div div">enabled: 1 = en, 0 = dis</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ac5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ac5_lc3_fdc__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="id__table_ac5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ac5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_bc5_lc3_fdc" data-ofbid="id__table_bc5_lc3_fdc" 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">drv_pin_get</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="id__table_bc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_bc5_lc3_fdc__entry__2">rt_base_t drv_pin_get(const char *name)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_bc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_bc5_lc3_fdc__entry__2">根据 Pin Name 获取 Pin Id</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_bc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_bc5_lc3_fdc__entry__2">name：Pin Name 字符串 (“PA.1” 类似格式)</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_bc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_bc5_lc3_fdc__entry__2">Pin Id</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_bc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_bc5_lc3_fdc__entry__2">-</td></tr></tbody></table></div></div>
|
||
<div class="- topic/div div section" id="id__hal">
|
||
<strong class="+ topic/ph hi-d/b ph b">HAL 层接口设计</strong>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_cc5_lc3_fdc" data-ofbid="id__table_cc5_lc3_fdc" 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"> 9</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_set_func</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="id__table_cc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_cc5_lc3_fdc__entry__2">int hal_gpio_set_func(unsigned int group, unsigned int pin,
|
||
unsigned int func)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_cc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_cc5_lc3_fdc__entry__2">设置 Pin 的 Function 模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_cc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_cc5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
<div class="- topic/div div">func: 0 = 关闭, 1 = 通用 GPIO, 2~8 = 专用功能</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_cc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_cc5_lc3_fdc__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="id__table_cc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_cc5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_dc5_lc3_fdc" data-ofbid="id__table_dc5_lc3_fdc" 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"> 10</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_get_func</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="id__table_dc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_dc5_lc3_fdc__entry__2">int hal_gpio_get_func(unsigned int group, unsigned int pin,
|
||
unsigned int *pfunc)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_dc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_dc5_lc3_fdc__entry__2">获取 Pin 的 Function 模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_dc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_dc5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
<div class="- topic/div div">func: 0 = 关闭, 1 = 通用 GPIO, 2~8 = 专用功能</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_dc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_dc5_lc3_fdc__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="id__table_dc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_dc5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_ec5_lc3_fdc" data-ofbid="id__table_ec5_lc3_fdc" 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"> 11</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_direction_input</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="id__table_ec5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ec5_lc3_fdc__entry__2">int hal_gpio_direction_input(unsigned int group, unsigned int
|
||
pin)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ec5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ec5_lc3_fdc__entry__2">设置 Pin 为输入模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ec5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ec5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ec5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ec5_lc3_fdc__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="id__table_ec5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ec5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_fc5_lc3_fdc" data-ofbid="id__table_fc5_lc3_fdc" 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"> 12</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_direction_output</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="id__table_fc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_fc5_lc3_fdc__entry__2">int hal_gpio_direction_output(unsigned int group, unsigned
|
||
int pin)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_fc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_fc5_lc3_fdc__entry__2">设置 Pin 为输出模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_fc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_fc5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_fc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_fc5_lc3_fdc__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="id__table_fc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_fc5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_gc5_lc3_fdc" data-ofbid="id__table_gc5_lc3_fdc" 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"> 13</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_set_bias_pull</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="id__table_gc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_gc5_lc3_fdc__entry__2">int hal_gpio_set_bias_pull(unsigned int group, unsigned int
|
||
pin, unsigned int pull)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_gc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_gc5_lc3_fdc__entry__2">设置 Pin 的上下拉模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_gc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_gc5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
<div class="- topic/div div">pull: 0 = 关闭, 2 = 下拉, 3 = 上拉</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_gc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_gc5_lc3_fdc__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="id__table_gc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_gc5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_hc5_lc3_fdc" data-ofbid="id__table_hc5_lc3_fdc" 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"> 14</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_set_drive_strength</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="id__table_hc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_hc5_lc3_fdc__entry__2">int hal_gpio_set_drive_strength(unsigned int group, unsigned
|
||
int pin, unsigned int strength)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_hc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_hc5_lc3_fdc__entry__2">设置 Pin 的驱动能力</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_hc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_hc5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
<div class="- topic/div div">strength: 0 ~ 7</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_hc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_hc5_lc3_fdc__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="id__table_hc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_hc5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_ic5_lc3_fdc" data-ofbid="id__table_ic5_lc3_fdc" 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"> 15</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_set_debounce</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="id__table_ic5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ic5_lc3_fdc__entry__2">int hal_gpio_set_debounce(unsigned int group, unsigned int
|
||
pin, unsigned int debounce)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ic5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ic5_lc3_fdc__entry__2">设置 Pin 的防抖能力</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ic5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ic5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
<div class="- topic/div div">debounce: 0 ~ 0xFFF</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ic5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ic5_lc3_fdc__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="id__table_ic5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ic5_lc3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_jc5_lc3_fdc" data-ofbid="id__table_jc5_lc3_fdc" 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"> 16</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_gpio_set_irq_mode</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="id__table_jc5_lc3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_jc5_lc3_fdc__entry__2">int hal_gpio_set_irq_mode(unsigned int group, unsigned int
|
||
pin, unsigned int irq_mode)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_jc5_lc3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_jc5_lc3_fdc__entry__2">设置 Pin 的中断模式</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_jc5_lc3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_jc5_lc3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">group：group id</div>
|
||
<div class="- topic/div div">pin：offset in group</div>
|
||
<div class="- topic/div div">irq_mode: 0 = 下降沿，1 = 上升沿，2 = 低电平，3 = 高电平，4 = 双沿</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_jc5_lc3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_jc5_lc3_fdc__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="id__table_jc5_lc3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_jc5_lc3_fdc__entry__2">-</td></tr></tbody></table></div></div>
|
||
</section><section class="- topic/section section" id="id__section_cvq_yc3_fdc" data-ofbid="id__section_cvq_yc3_fdc"><h2 class="- topic/title title sectiontitle">Demo</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d171263e865__20250121171621">此 Demo 是 <code class="+ topic/ph pr-d/codeph ph codeph">test_gpio</code> 命令的部分代码，含二级中断使用方法(详见
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">test_gpio.c</span>)，可以作为 GPIO
|
||
的使用参考：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_hyd_zc3_fdc" data-ofbid="id__codeblock_hyd_zc3_fdc"><strong class="hl-keyword">static</strong> u32 test_gpio_input_pin_cfg(<strong class="hl-keyword">char</strong> *arg_pin)
|
||
{
|
||
<em class="hl-comment">// 1.test_gpio_pin_check 函数获取引脚号</em>
|
||
<strong class="hl-keyword">static</strong> u32 pin = <span class="hl-number">0</span>;
|
||
pin = test_gpio_pin_check(arg_pin, GPIO_SET_MODE_FLAG);
|
||
|
||
<em class="hl-comment">// 2.引脚模式设置为 Input-PullUp 模式，即上拉输入模式</em>
|
||
rt_pin_mode(pin, PIN_MODE_INPUT_PULLUP);
|
||
|
||
<em class="hl-comment">// 3.rt_pin_attach_irq 函数将中断处理程序 test_gpio_input_irq_handler 附加到引脚上，并设置中断触发模式为上升沿和下降沿</em>
|
||
rt_pin_attach_irq(pin, PIN_IRQ_MODE_RISING_FALLING,
|
||
test_gpio_input_irq_handler, &pin);
|
||
|
||
<em class="hl-comment">// 4.rt_pin_irq_enable 函数启用引脚的中断功能</em>
|
||
rt_pin_irq_enable(pin, PIN_IRQ_ENABLE);
|
||
|
||
<strong class="hl-keyword">return</strong> pin;
|
||
}</pre></div>
|
||
</section></div></article></main></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__section_xr2_lc3_fdc" data-tocid="id__section_xr2_lc3_fdc">源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_rxw_gpf_fdc" data-tocid="id__section_rxw_gpf_fdc">模块架构</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_wcj_pc3_fdc" data-tocid="id__section_wcj_pc3_fdc">关键流程设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_jfy_rc3_fdc" data-tocid="id__section_jfy_rc3_fdc">接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_cvq_yc3_fdc" data-tocid="id__section_cvq_yc3_fdc">Demo</a></div></li></ul></div>
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