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href="../../../topics/sdk/rtp/rtp_faq_2.html" id="rtp_common_issues-d5856e5793-link">常见问题</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="spi-d5856e5805" class="topicref" data-id="spi" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action spi-d5856e5805-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/spi/spi_user_guide_2.html" id="spi-d5856e5805-link"><span class="ph">Q</span>SPI 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="uart_user_guide-d5856e5879" class="topicref" data-id="uart_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action uart_user_guide-d5856e5879-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/uart/uart_user_guide_2.html" id="uart_user_guide-d5856e5879-link">UART 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="usb_user_guide-d5856e5951" class="topicref" data-id="usb_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action usb_user_guide-d5856e5951-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/usb/usb_user_guide_2.html" id="usb_user_guide-d5856e5951-link">USB 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e6011" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e6011-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mac/mac_user_guide_2.html" id="id-d5856e6011-link">MAC 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d5856e6083" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d5856e6083-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d5856e6083-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
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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/rtp/rtp_design_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 3 minute(s)
|
||
</div><div class="- topic/body body"><section class="- topic/section section" id="id__id2" data-ofbid="id__id2"><h2 class="- topic/title title sectiontitle">源码说明</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d240633e24__20250121171658">源代码位于 <span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/</span>：</p><ul class="- topic/ul ul simple" data-ofbid="d240633e29__20250121171658"><li class="- topic/li li" data-ofbid="d240633e30__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e32__20250121171658"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/drv/rtp/drv_rtp.c</span>，RTP Driver 层实现</p>
|
||
</li><li class="- topic/li li" data-ofbid="d240633e37__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e39__20250121171658"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/hal/rtp/hal_rtp.c</span>，RTP HAL 层实现</p>
|
||
</li><li class="- topic/li li" data-ofbid="d240633e44__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e46__20250121171658"><span class="+ topic/ph sw-d/filepath ph filepath">bsp/artinchip/include/hal/hal_rtp.h</span>，RTP HAL 层接口头文件</p>
|
||
</li></ul></section><section class="- topic/section section" id="id__id3" data-ofbid="id__id3"><h2 class="- topic/title title sectiontitle">模块架构</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d240633e56__20250121171658">RTP 驱动 Driver 层采用 RT-Thread 的 Touch 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__id8" data-ofbid="id__id8"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" src="../../../images/rtp/rtp_sw_system.png" alt="sw_system19"/></div><br/><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">RTP 驱动的软件架构图</span></figcaption></figure></section><section class="- topic/section section" id="id__id4" data-ofbid="id__id4"><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="d240633e74__20250121171658">RTP 驱动的初始化接口通过 <span class="+ topic/keyword pr-d/apiname keyword apiname">INIT_DEVICE_EXPORT(drv_rtp_init)</span> 完成，主要是通过调用
|
||
Touch 子系统的接口 <span class="+ topic/keyword pr-d/apiname keyword apiname">rt_device_touch_register()</span> 注册一个 Touch
|
||
设备。</p><p class="- topic/p p" data-ofbid="d240633e82__20250121171658">RTP 控制器的初始化过程，主要步骤有：</p><ol class="- topic/ol ol arabic simple" data-ofbid="d240633e84__20250121171658"><li class="- topic/li li" data-ofbid="d240633e85__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e87__20250121171658">初始化模块的 clk</p>
|
||
</li><li class="- topic/li li" data-ofbid="d240633e90__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e92__20250121171658">注册中断</p>
|
||
</li><li class="- topic/li li" data-ofbid="d240633e95__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e97__20250121171658">初始化默认参数，使能 RTP 控制器</p>
|
||
</li><li class="- topic/li li" data-ofbid="d240633e100__20250121171658">
|
||
<p class="- topic/p p" data-ofbid="d240633e102__20250121171658">向设备框架中注册 Touch 设备</p>
|
||
</li></ol></div><div class="- topic/div div section" id="id__id6">
|
||
<strong class="+ topic/ph hi-d/b ph b">中断处理流程</strong>
|
||
<p class="- topic/p p" data-ofbid="d240633e110__20250121171658">RTP 控制器采集的数据完全依赖中断来上报给应用层，包括触摸位置、按下、抬起信息。 流程如下图：</p><figure class="- topic/fig fig fignone" id="id__id9" data-ofbid="id__id9"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" src="../../../images/rtp/irq_flow.png" width="384" alt="irq_flow"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">RTP 驱动的中断处理流程</span></figcaption></figure></div></section><section class="- topic/section section" id="id__id7" data-ofbid="id__id7"><h2 class="- topic/title title sectiontitle">数据结构设计</h2>
|
||
|
||
<ul class="- topic/ul ul" id="id__ul_vxr_j4s_4dc" data-ofbid="id__ul_vxr_j4s_4dc"><li class="- topic/li li" data-ofbid="d240633e124__20250121171658">
|
||
<div class="- topic/div div section" id="id__struct-aic-rtp-dev">
|
||
<strong class="+ topic/ph hi-d/b ph b">struct aic_rtp_dev</strong>
|
||
<div class="- topic/p p" data-ofbid="d240633e131__20250121171658">属于 HAL 层接口，管理 RTP
|
||
控制器的设备资源。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_pf3_5k3_fdc" data-ofbid="id__codeblock_pf3_5k3_fdc"><strong class="hl-keyword">struct</strong> aic_rtp_dev {
|
||
u32 pclk_rate;
|
||
|
||
s32 pressure_det;
|
||
s32 ignore_fifo_data;
|
||
<strong class="hl-keyword">enum</strong> aic_rtp_mode mode;
|
||
u32 max_press;
|
||
u32 smp_period;
|
||
u32 x_plate;
|
||
u32 y_plate;
|
||
u32 fuzz;
|
||
|
||
u32 intr;
|
||
u32 fcr;
|
||
<strong class="hl-keyword">struct</strong> aic_rtp_dat latest;
|
||
aicos_sem_t sem;
|
||
<strong class="hl-keyword">struct</strong> aic_rtp_ebuf ebuf;
|
||
};</pre></div></div>
|
||
</li><li class="- topic/li li" data-ofbid="d240633e136__20250121171658">
|
||
<div class="- topic/div div section" id="id__struct-aic-rtp-ebuf">
|
||
<strong class="+ topic/ph hi-d/b ph b">struct aic_rtp_ebuf</strong>
|
||
<div class="- topic/p p" data-ofbid="d240633e143__20250121171658">属于 HAL 层接口，用于缓存给应用层上报的坐标
|
||
event。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_b34_5k3_fdc" data-ofbid="id__codeblock_b34_5k3_fdc"><strong class="hl-keyword">struct</strong> aic_rtp_event {
|
||
u16 x;
|
||
u16 y;
|
||
u16 pressure;
|
||
u16 down;
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> aic_rtp_ebuf {
|
||
u16 rd_pos;
|
||
u16 wr_pos;
|
||
<strong class="hl-keyword">struct</strong> aic_rtp_event event[AIC_RTP_EVT_BUF_SIZE];
|
||
};</pre></div></div>
|
||
</li></ul></section><section class="- topic/section section" id="id__driver" data-ofbid="id__driver"><h2 class="- topic/title title sectiontitle">Driver 层接口设计</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d240633e153__20250121171658">以下接口是 Touch 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_r4m_vk3_fdc" data-ofbid="id__codeblock_r4m_vk3_fdc"><strong class="hl-keyword">struct</strong> rt_touch_ops
|
||
{
|
||
rt_size_t (*touch_readpoint)(<strong class="hl-keyword">struct</strong> rt_touch_device *touch, <strong class="hl-keyword">void</strong> *buf, rt_size_t touch_num);
|
||
rt_err_t (*touch_control)(<strong class="hl-keyword">struct</strong> rt_touch_device *touch, <strong class="hl-keyword">int</strong> cmd, <strong class="hl-keyword">void</strong> *arg);
|
||
};</pre>
|
||
</div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_glx_vk3_fdc" data-ofbid="id__table_glx_vk3_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_rtp_read_point</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_glx_vk3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_glx_vk3_fdc__entry__2">rt_size_t drv_rtp_read_point(struct rt_touch_device *touch, void
|
||
*buf, rt_size_t touch_num)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_glx_vk3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_glx_vk3_fdc__entry__2">打开 RTP 设备，驱动会使能 RTP 控制器</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_glx_vk3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_glx_vk3_fdc__entry__2">
|
||
<div class="- topic/div div">touch - 指向 Touch 设备</div>
|
||
<div class="- topic/div div">buf - 用于保存返回的坐标事件信息，struct rt_touch_data 类型</div>
|
||
<div class="- topic/div div">touch_num - 要读取的坐标个数，目前 </div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_glx_vk3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_glx_vk3_fdc__entry__2">1，成功读取到一个坐标事件； 0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_glx_vk3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_glx_vk3_fdc__entry__2">- </td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table frame-all" id="id__table_dxk_wk3_fdc" data-ofbid="id__table_dxk_wk3_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_rtp_control</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_dxk_wk3_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_dxk_wk3_fdc__entry__2">rt_err_t drv_rtp_control(struct rt_touch_device *touch, int cmd,
|
||
void *arg)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_dxk_wk3_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_dxk_wk3_fdc__entry__2">RTP 驱动的 ioctl 接口</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_dxk_wk3_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_dxk_wk3_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">touch - 指向 Touch 设备</div>
|
||
<div class="- topic/div div">cmd - ioctl 命令码</div>
|
||
<div class="- topic/div div">args - ioctl 命令相应的参数</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_dxk_wk3_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_dxk_wk3_fdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_dxk_wk3_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_dxk_wk3_fdc__entry__2">目前仅支持 RTP 中断的使能和关闭，其他 ioctl 命令将返回-1</td></tr></tbody></table></div></section><section class="- topic/section section" id="id__hal" data-ofbid="id__hal"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d240633e250__20250121171658">HAL 层的函数接口声明存放在 hal_rtp.h
|
||
中，主要接口有：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_s15_wk3_fdc" data-ofbid="id__codeblock_s15_wk3_fdc"><strong class="hl-keyword">void</strong> hal_rtp_status_show(<strong class="hl-keyword">struct</strong> aic_rtp_dev *rtp);
|
||
|
||
<strong class="hl-keyword">void</strong> hal_rtp_enable(<strong class="hl-keyword">struct</strong> aic_rtp_dev *rtp, <strong class="hl-keyword">int</strong> en);
|
||
<strong class="hl-keyword">void</strong> hal_rtp_int_enable(<strong class="hl-keyword">struct</strong> aic_rtp_dev *rtp, <strong class="hl-keyword">int</strong> en);
|
||
<strong class="hl-keyword">void</strong> hal_rtp_auto_mode(<strong class="hl-keyword">struct</strong> aic_rtp_dev *rtp);
|
||
|
||
irqreturn_t hal_rtp_isr(<strong class="hl-keyword">int</strong> irq, <strong class="hl-keyword">void</strong> *arg);
|
||
|
||
u32 hal_rtp_ebuf_read_space(<strong class="hl-keyword">struct</strong> aic_rtp_ebuf *ebuf);
|
||
#<span class="hl-directive">define</span> hal_rtp_ebuf_write_space(buf) \
|
||
(AIC_RTP_EVT_BUF_SIZE - hal_rtp_ebuf_read_space(buf))
|
||
#<span class="hl-directive">define</span> hal_rtp_ebuf_full(buf) (hal_rtp_ebuf_write_space(buf) == <span class="hl-number">0</span>)
|
||
#<span class="hl-directive">define</span> hal_rtp_ebuf_empty(buf) (hal_rtp_ebuf_read_space((buf)) == <span class="hl-number">0</span>)
|
||
s32 hal_rtp_ebuf_write(<strong class="hl-keyword">struct</strong> aic_rtp_ebuf *ebuf, <strong class="hl-keyword">struct</strong> aic_rtp_event *e);
|
||
s32 hal_rtp_ebuf_read(<strong class="hl-keyword">struct</strong> aic_rtp_ebuf *ebuf, <strong class="hl-keyword">struct</strong> aic_rtp_event *e);</pre></div></section></div></article></main></div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
<nav role="navigation" id="wh_topic_toc" aria-label="On this page" class="col-lg-2 d-none d-lg-block navbar d-print-none">
|
||
<div id="wh_topic_toc_content">
|
||
|
||
<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__id2" data-tocid="id__id2">源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id3" data-tocid="id__id3">模块架构</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id4" data-tocid="id__id4">关键流程设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id7" data-tocid="id__id7">数据结构设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__driver" data-tocid="id__driver">Driver 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__hal" data-tocid="id__hal">HAL 层接口设计</a></div></li></ul></div>
|
||
|
||
</div>
|
||
</nav>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
<footer class="navbar navbar-default wh_footer">
|
||
<div class=" footer-container mx-auto ">
|
||
<title>footer def</title>
|
||
<style><!--
|
||
|
||
.p1 {
|
||
font-family: FangZhengShuSong, Times, serif;
|
||
}
|
||
.p2 {
|
||
font-family: Arial, Helvetica, sans-serif;
|
||
}
|
||
.p3 {
|
||
font-family: "Lucida Console", "Courier New", monospace;
|
||
}
|
||
|
||
--></style>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="webhelp.fragment.footer">
|
||
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
||
</div><div>
|
||
<div class="generation_time">
|
||
Update Time: 2025-01-21
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
<div id="go2top" class="d-print-none">
|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</div>
|
||
|
||
<div id="modal_img_large" class="modal">
|
||
<span class="close oxy-icon oxy-icon-remove"></span>
|
||
<div id="modal_img_container"></div>
|
||
<div id="caption"></div>
|
||
</div>
|
||
|
||
|
||
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
||
|
||
|
||
</body>
|
||
</html> |