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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" role="article" aria-labelledby="ariaid-title1">
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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://aicdocco/taskstopics/sdk/gpai/gpai_design_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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2025-04-23 17:54:31 +08:00
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Read time: 4 minute(s)
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</div>
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<div class="- topic/body body">
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<section class="- topic/section section" id="id__section_gnw_gpf_fdc" data-ofbid="id__section_gnw_gpf_fdc"><h2 class="- topic/title title sectiontitle">源码说明</h2>
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2025-07-22 11:15:46 +08:00
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<p class="- topic/p p" data-ofbid="d180385e33__20250519091525">源代码位于 <span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/</span>：</p>
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2025-04-23 17:54:31 +08:00
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<ul class="- topic/ul ul simple" id="id__ul_wd2_db3_fdc" data-ofbid="id__ul_wd2_db3_fdc">
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2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e41__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e43__20250519091525"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/gpai/drv_gpai.c</span>，GPAI Driver 层实现</p>
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2025-04-23 17:54:31 +08:00
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</li>
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2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e49__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e51__20250519091525"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/hal/gpai/hal_gpai.c</span>，GPAI HAL 层实现</p>
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</li>
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2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e57__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e59__20250519091525"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/include/hal/hal_gpai.h</span>，GPAI HAL 层接口头文件</p>
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2025-04-23 17:54:31 +08:00
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</section>
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<section class="- topic/section section" id="id__section_qnb_2b3_fdc" data-ofbid="id__section_qnb_2b3_fdc"><h2 class="- topic/title title sectiontitle">模块架构</h2>
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<div class="- topic/p p" data-ofbid="d180385e72__20250519091525">GPAI 驱动 Driver 层采用 RT-Thread 的 ADC 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。<figure class="- topic/fig fig fignone" id="id__fig_xd2_db3_fdc" data-ofbid="id__fig_xd2_db3_fdc">
|
2025-04-23 17:54:31 +08:00
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|
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_yd2_db3_fdc" src="../../../images/gpai/gpai_sw_system.png" width="288" alt="sw_system20"/></div><br/>
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</figure></div>
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</section>
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|
<section class="- topic/section section" id="id__section_fwx_2b3_fdc" data-ofbid="id__section_fwx_2b3_fdc"><h2 class="- topic/title title sectiontitle">关键流程设计</h2>
|
2025-01-23 16:37:00 +08:00
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<div class="- topic/div div section" id="id__id5">
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<strong class="+ topic/ph hi-d/b ph b">初始化流程</strong>
|
2025-07-22 11:15:46 +08:00
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|
<p class="- topic/p p" data-ofbid="d180385e94__20250519091525">GPAI 驱动的初始化接口通过 <span class="+ topic/keyword pr-d/apiname keyword apiname">INIT_DEVICE_EXPORT(drv_gpai_init)</span> 完成，会通过调用 ADC
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|
子系统的接口 rt_hw_adc_register() 注册一个 ADC 设备。</p><p class="- topic/p p" data-ofbid="d180385e99__20250519091525">GPAI 控制器的初始化过程，主要步骤有： </p><ol class="- topic/ol ol arabic simple" id="id__ol_zd2_db3_fdc" data-ofbid="id__ol_zd2_db3_fdc">
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<li class="- topic/li li" data-ofbid="d180385e103__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e105__20250519091525">初始化模块的 clk</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e109__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e111__20250519091525">注册中断</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e115__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e117__20250519091525">初始化默认参数</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e121__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e123__20250519091525">向设备框架中注册 ADC 设备</p>
|
2025-04-23 17:54:31 +08:00
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</li>
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</ol></div>
|
2025-01-23 16:37:00 +08:00
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|
<div class="- topic/div div section" id="id__id6">
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<strong class="+ topic/ph hi-d/b ph b">中断处理流程</strong>
|
2025-07-22 11:15:46 +08:00
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<p class="- topic/p p" data-ofbid="d180385e133__20250519091525">GPAI 支持使用中断方式来读取数据，这样避免应用层的忙等待。</p><figure class="- topic/fig fig fignone" id="id__id8" data-ofbid="id__id8">
|
2025-04-23 17:54:31 +08:00
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<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_a22_db3_fdc" src="../../../images/gpai/gpai_irq_flow.png" width="288" alt="gpai_irq_flow.png"/></div><br/>
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<figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">GPAI 非周期模式的数据采集流程</span></figcaption></figure><ul class="- topic/ul ul simple" id="id__ul_b22_db3_fdc" data-ofbid="id__ul_b22_db3_fdc">
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e148__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e150__20250519091525">对于非周期模式：当用户层触发 convert()接口，就会启动一次硬件去读数据</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e154__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e156__20250519091525">当硬件准备好数据，会产生一个中断</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e160__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e162__20250519091525">在中断处理函数中，用 INT Flag 来区分是哪个通道有数据，逐个通道扫描将数据读出，会缓存到一个全局变量中</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e166__20250519091525">
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<p class="- topic/p p" data-ofbid="d180385e168__20250519091525">对于周期模式：GPAI 控制器会自动按给定周期产生一次数据中断</p>
|
2025-04-23 17:54:31 +08:00
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</li>
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</ul>
|
2025-01-23 16:37:00 +08:00
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</div>
|
2025-04-23 17:54:31 +08:00
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</section>
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<section class="- topic/section section" id="id__section_yzq_fb3_fdc" data-ofbid="id__section_yzq_fb3_fdc"><h2 class="- topic/title title sectiontitle">数据结构设计</h2>
|
2025-01-23 16:37:00 +08:00
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|
2025-04-23 17:54:31 +08:00
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<ul class="- topic/ul ul" id="id__ul_gtn_wpn_4dc" data-ofbid="id__ul_gtn_wpn_4dc">
|
2025-07-22 11:15:46 +08:00
|
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|
<li class="- topic/li li" data-ofbid="d180385e182__20250519091525">
|
2025-01-23 16:37:00 +08:00
|
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|
<div class="- topic/div div section" id="id__struct-aic-gpai-dev">
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<strong class="+ topic/ph hi-d/b ph b">struct aic_gpai_dev</strong>
|
2025-07-22 11:15:46 +08:00
|
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|
<div class="- topic/p p" data-ofbid="d180385e189__20250519091525">属于 Driver 层内部使用的数据结构，管理 GPAI
|
2025-01-23 16:37:00 +08:00
|
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|
控制器的设备资源：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_urz_lb3_fdc" data-ofbid="id__codeblock_urz_lb3_fdc"><strong class="hl-keyword">struct</strong> aic_gpai_dev {
|
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|
<strong class="hl-keyword">struct</strong> rt_adc_device *dev;
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|
<strong class="hl-keyword">struct</strong> aic_gpai_ch *chan;
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};</pre></div>
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</div>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d180385e196__20250519091525">
|
2025-01-23 16:37:00 +08:00
|
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|
<div class="- topic/div div section" id="id__struct-aic-gpai-ch">
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<strong class="+ topic/ph hi-d/b ph b">struct aic_gpai_ch</strong>
|
2025-07-22 11:15:46 +08:00
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|
<div class="- topic/p p" data-ofbid="d180385e203__20250519091525">属于 HAL 层接口，记录单个 ADC
|
2025-01-23 16:37:00 +08:00
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|
通道的配置信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_aky_lb3_fdc" data-ofbid="id__codeblock_aky_lb3_fdc"><strong class="hl-keyword">struct</strong> aic_gpai_ch {
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|
u8 id;
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u8 available;
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|
<strong class="hl-keyword">enum</strong> aic_gpai_mode mode;
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|
u32 smp_period;
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|
u16 latest_data;
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u8 fifo_depth;
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u8 fifo_thd;
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u8 hla_enable; <em class="hl-comment">// high-level alarm</em>
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|
u8 lla_enable; <em class="hl-comment">// low-level alarm</em>
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|
u16 hla_thd;
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u16 hla_rm_thd;
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u16 lla_thd;
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u16 lla_rm_thd;
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aicos_sem_t complete;
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|
};</pre></div></div>
|
2025-04-23 17:54:31 +08:00
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</li>
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</ul>
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</section>
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|
<section class="- topic/section section" id="id__section_edf_gb3_fdc" data-ofbid="id__section_edf_gb3_fdc"><h2 class="- topic/title title sectiontitle">Driver 层接口设计</h2>
|
2025-01-23 16:37:00 +08:00
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|
2025-07-22 11:15:46 +08:00
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|
<div class="- topic/p p" data-ofbid="d180385e216__20250519091525">以下接口是 GPAI 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_rp4_lb3_fdc" data-ofbid="id__codeblock_rp4_lb3_fdc"><strong class="hl-keyword">struct</strong> rt_adc_ops
|
2025-01-23 16:37:00 +08:00
|
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|
{
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|
rt_err_t (*enabled)(<strong class="hl-keyword">struct</strong> rt_adc_device *device, rt_uint32_t channel, rt_bool_t enabled);
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|
rt_err_t (*convert)(<strong class="hl-keyword">struct</strong> rt_adc_device *device, rt_uint32_t channel, rt_uint32_t *value);
|
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|
rt_uint8_t (*get_resolution)(<strong class="hl-keyword">struct</strong> rt_adc_device *device);
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|
rt_int16_t (*get_vref) (<strong class="hl-keyword">struct</strong> rt_adc_device *device);
|
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|
|
};</pre></div>
|
2025-07-22 11:15:46 +08:00
|
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|
<div class="- topic/p p" data-ofbid="d180385e221__20250519091525">其中的 get_vref() 暂未支持。 <div class="table-container"><table class="- topic/table table frame-all" id="id__table_c22_db3_fdc" data-ofbid="id__table_c22_db3_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">drv_gpai_enabled</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead">
|
2025-04-23 17:54:31 +08:00
|
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|
<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
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|
<th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_c22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e239__20250519091525">函数原型</p></th>
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<th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_c22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e243__20250519091525">
|
2025-01-23 16:37:00 +08:00
|
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<div class="- topic/div div">
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|
<div class="- topic/div div">rt_err_t drv_gpai_enabled(struct rt_adc_device *dev,
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|
rt_uint32_t ch, rt_bool_t enabled)</div>
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</div>
|
2025-04-23 17:54:31 +08:00
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</p></th>
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</tr>
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</thead><tbody class="- topic/tbody tbody">
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_c22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e259__20250519091525">功能说明</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_c22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e263__20250519091525">使能一个 ADC 通道</p></td>
|
2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_c22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e270__20250519091525">参数定义</p></td>
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|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_c22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e274__20250519091525">
|
2025-01-23 16:37:00 +08:00
|
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<div class="- topic/div div">
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|
<div class="- topic/div div">dev - 指向 ADC 设备</div>
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|
<div class="- topic/div div">ch - 指定 ADC 通道的通道编号</div>
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<div class="- topic/div div">enable - 使能</div>
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</div>
|
2025-04-23 17:54:31 +08:00
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|
</p></td>
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</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_c22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e293__20250519091525">返回值</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_c22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e297__20250519091525">0，成功； < 0，失败</p></td>
|
2025-04-23 17:54:31 +08:00
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|
</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
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|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_c22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e304__20250519091525">注意事项</p></td>
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|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_c22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e308__20250519091525">- </p></td>
|
2025-04-23 17:54:31 +08:00
|
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</tr>
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|
</tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_d22_db3_fdc" data-ofbid="id__table_d22_db3_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_gpai_convert</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead">
|
|
|
|
|
|
<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
|
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|
<th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_d22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e330__20250519091525">函数原型</p></th>
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|
<th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_d22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e334__20250519091525">
|
2025-01-23 16:37:00 +08:00
|
|
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|
<div class="- topic/div div">
|
|
|
|
|
|
<div class="- topic/div div">rt_err_t drv_gpai_convert(struct rt_adc_device *dev,
|
|
|
|
|
|
rt_uint32_t ch, rt_uint32_t *value)</div>
|
|
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|
</div>
|
2025-04-23 17:54:31 +08:00
|
|
|
|
</p></th>
|
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</tr>
|
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</thead><tbody class="- topic/tbody tbody">
|
|
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
|
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|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_d22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e350__20250519091525">功能说明</p></td>
|
|
|
|
|
|
<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_d22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e354__20250519091525">读取一个 ADC 通道的当前数据</p></td>
|
2025-04-23 17:54:31 +08:00
|
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|
</tr>
|
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
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|
<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_d22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e361__20250519091525">参数定义</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_d22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e365__20250519091525">
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<div class="- topic/div div">
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<div class="- topic/div div">dev - 指向 ADC 设备</div>
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<div class="- topic/div div">ch - 指定 ADC 通道的通道编号</div>
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<div class="- topic/div div">value - 用于保存返回的 ADC 数据</div>
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</div>
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</p></td>
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</tr>
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<tr class="- topic/row">
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2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_d22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e384__20250519091525">返回值</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_d22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e388__20250519091525">0，成功； < 0，失败</p></td>
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2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
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2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_d22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e395__20250519091525">注意事项</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_d22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e399__20250519091525">- </p></td>
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</tr>
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</tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_e22_db3_fdc" data-ofbid="id__table_e22_db3_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_gpai_resolution</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead">
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<tr class="- topic/row">
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2025-07-22 11:15:46 +08:00
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<th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_e22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e421__20250519091525">函数原型</p></th>
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<th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_e22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e425__20250519091525">
|
2025-01-23 16:37:00 +08:00
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<div class="- topic/div div">
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<div class="- topic/div div">rt_err_t drv_gpai_resolution(struct rt_adc_device
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*dev)</div>
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</div>
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2025-04-23 17:54:31 +08:00
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</p></th>
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</tr>
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</thead><tbody class="- topic/tbody tbody">
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<tr class="- topic/row">
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2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_e22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e441__20250519091525">功能说明</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_e22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e445__20250519091525">获取 GPAI 控制器的采样精度</p></td>
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2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
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2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_e22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e452__20250519091525">参数定义</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_e22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e456__20250519091525">
|
2025-01-23 16:37:00 +08:00
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<div class="- topic/div div">
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<div class="- topic/div div">dev - 指向 ADC 设备</div>
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</div>
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2025-04-23 17:54:31 +08:00
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</p></td>
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</tr>
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<tr class="- topic/row">
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2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_e22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e469__20250519091525">返回值</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_e22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e473__20250519091525">12，表示 12bit 的采样精度</p></td>
|
2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_e22_db3_fdc__entry__1"><p class="- topic/p p" data-ofbid="d180385e480__20250519091525">注意事项</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_e22_db3_fdc__entry__2"><p class="- topic/p p" data-ofbid="d180385e484__20250519091525">-</p></td>
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2025-04-23 17:54:31 +08:00
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</tr>
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</tbody></table></div></div>
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</section>
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<section class="- topic/section section" id="id__section_gfl_jb3_fdc" data-ofbid="id__section_gfl_jb3_fdc"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
|
2025-01-23 16:37:00 +08:00
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2025-07-22 11:15:46 +08:00
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<div class="- topic/p p" data-ofbid="d180385e498__20250519091525">HAL 层的函数接口声明存放在 hal_gpai.h
|
2025-01-23 16:37:00 +08:00
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中，主要接口有：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_f22_db3_fdc" data-ofbid="id__codeblock_f22_db3_fdc"><strong class="hl-keyword">void</strong> aich_gpai_enable(<strong class="hl-keyword">int</strong> enable);
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<strong class="hl-keyword">void</strong> aich_gpai_ch_enable(u32 ch, <strong class="hl-keyword">int</strong> enable);
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<strong class="hl-keyword">int</strong> aich_gpai_ch_init(<strong class="hl-keyword">struct</strong> aic_gpai_ch *chan, u32 pclk);
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irqreturn_t aich_gpai_isr(<strong class="hl-keyword">int</strong> irq, <strong class="hl-keyword">void</strong> *arg);
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<strong class="hl-keyword">int</strong> aich_gpai_read(<strong class="hl-keyword">struct</strong> aic_gpai_ch *chan, u32 *val, u32 timeout);
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s32 aich_gpai_data2vol(u16 data);
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<strong class="hl-keyword">struct</strong> aic_gpai_ch *hal_gpai_ch_is_valid(u32 ch);
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<strong class="hl-keyword">void</strong> hal_gpai_set_ch_num(u32 num);
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<strong class="hl-keyword">void</strong> aich_gpai_status_show(<strong class="hl-keyword">struct</strong> aic_gpai_ch *chan);</pre></div>
|
2025-04-23 17:54:31 +08:00
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</section>
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<section class="- topic/section section" id="id__section_wrb_jb3_fdc" data-ofbid="id__section_wrb_jb3_fdc"><h2 class="- topic/title title sectiontitle">Demo</h2>
|
2025-01-23 16:37:00 +08:00
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|
2025-07-22 11:15:46 +08:00
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<div class="- topic/p p" data-ofbid="d180385e509__20250519091525">此 Demo 是 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">gpai</span> 命令的部分代码（详见 <span class="+ topic/ph sw-d/filepath ph filepath">drv_gpai.c</span>），可以作为 GPAI
|
2025-01-23 16:37:00 +08:00
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|
设备的使用参考：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_e42_pb3_fdc" data-ofbid="id__codeblock_e42_pb3_fdc">u32 ch = <span class="hl-number">0</span>;
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<strong class="hl-keyword">struct</strong> rt_adc_device *dev = NULL;
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dev = (<strong class="hl-keyword">struct</strong> rt_adc_device *)rt_device_find(<span class="hl-string">"gpai"</span>);
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|
<strong class="hl-keyword">if</strong> (!dev) {
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|
LOG_E(<span class="hl-string">"Failed to open %s device\n"</span>, <span class="hl-string">"gpai"</span>);
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|
<strong class="hl-keyword">return</strong>;
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|
}
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|
ret = rt_adc_enable(dev, ch);
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|
<strong class="hl-keyword">if</strong> (!ret) {
|
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|
val = rt_adc_read(dev, ch);
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|
printf(<span class="hl-string">"GPAI ch%d: %d\n"</span>, ch, val);
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}
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rt_adc_disable(dev, ch);</pre></div>
|
2025-04-23 17:54:31 +08:00
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</section>
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</div>
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</article></main></div>
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2025-01-23 16:37:00 +08:00
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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_gnw_gpf_fdc" data-tocid="id__section_gnw_gpf_fdc">源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_qnb_2b3_fdc" data-tocid="id__section_qnb_2b3_fdc">模块架构</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_fwx_2b3_fdc" data-tocid="id__section_fwx_2b3_fdc">关键流程设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_yzq_fb3_fdc" data-tocid="id__section_yzq_fb3_fdc">数据结构设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_edf_gb3_fdc" data-tocid="id__section_edf_gb3_fdc">Driver 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_gfl_jb3_fdc" data-tocid="id__section_gfl_jb3_fdc">HAL 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_wrb_jb3_fdc" data-tocid="id__section_wrb_jb3_fdc">Demo</a></div></li></ul></div>
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