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class="shortdesc">主要描述板卡的各项配置，使 SDK 的环境和板卡匹配，并确保 SDK 编译后的固件能够在板子上正常运行。</p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2039" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2039-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-prepare.html" id="id-d3752e2039-link">准备工作</a></div></div></li><li role="treeitem" class="active"><div data-tocid="id-d3752e2097" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-soc.html" id="id-d3752e2097-link">引脚配置</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2111" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a 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class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-console.html" id="id-d3752e2277-link">调试配置</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2291" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2291-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display.html" id="id-d3752e2291-link">屏幕配置</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2403" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-samples.html" id="id-d3752e2403-link">示例程序</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2418" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" 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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/bringup/lite-bringup-soc.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">引脚配置</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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Read time: 3 minute(s)
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</div>
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<div class="- topic/body body">
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<p class="- topic/p p" data-ofbid="d56073e31__20250519091508"><span class="- topic/ph ph">Luban-Lite</span> SDK 支持多个芯片平台，在 BringUp 之前，务必确认板卡使用的 SoC
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具体型号以配置正确的引脚和内存。遵照以下流程确认相应的 SoC 型号并修改配置：</p>
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<div class="- topic/p p" data-ofbid="d56073e36__20250519091508">
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<ol class="- topic/ol ol" id="id__ol_q4w_f31_w2c" data-ofbid="id__ol_q4w_f31_w2c">
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||
<li class="- topic/li li" data-ofbid="d56073e40__20250519091508">确认 SoC 的具体型号并阅读对应的芯片用户手册 —— 引脚复用章节，确认每个引脚能提供的功能。<p class="- topic/p p" data-ofbid="d56073e42__20250519091508">下图是 D13x 功能复用表示例，其中 PA0 功能 1
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为普通 GPIO 口，功能 5 为 UART0_TX：</p><div class="- topic/p p" data-ofbid="d56073e44__20250519091508">
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<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_tkw_z31_w2c" src="../../../images/bringup/lite_bringup_d13x_pinmux.png"/></div><br/>
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</div></li>
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<li class="- topic/li li" data-ofbid="d56073e52__20250519091508">打开 SoC 的
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<span class="+ topic/ph sw-d/filepath ph filepath">target/<var class="+ topic/keyword sw-d/varname keyword varname">SoC</var>/<var class="+ topic/keyword sw-d/varname keyword varname">board</var>/pinmux.c</span>
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引脚定义文件，配置引脚数量。<p class="- topic/p p" data-ofbid="d56073e63__20250519091508"><span class="- topic/ph ph">Luban-Lite</span> SDK 各个开发板引脚定义在
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<span class="+ topic/ph sw-d/filepath ph filepath">target/<var class="+ topic/keyword sw-d/varname keyword varname">SoC</var>/<var class="+ topic/keyword sw-d/varname keyword varname">board</var>/pinmux.c</span>
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文件中。SDK 中对于 SoC 支持的引脚数量没有显式限制。</p></li>
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<li class="- topic/li li" data-ofbid="d56073e77__20250519091508">根据芯片用户手册及板卡的原理图，确定对应的引脚功能，并在
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<span class="+ topic/ph sw-d/filepath ph filepath">target/<var class="+ topic/keyword sw-d/varname keyword varname">SoC</var>/<var class="+ topic/keyword sw-d/varname keyword varname">board</var>/pinmux.c</span>
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引脚定义文件中配置引脚功能。<p class="- topic/p p" data-ofbid="d56073e88__20250519091508">每个引脚同时只能被设置成一种功能，每个 pin 脚的配置，使用结构体描述。</p><div class="- topic/p p" data-ofbid="d56073e90__20250519091508">
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||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__pre_dk4_trv_1dc" data-ofbid="id__pre_dk4_trv_1dc"><strong class="hl-keyword">struct</strong> aic_pinmux
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{
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<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">char</strong> func; <strong class="+ topic/ph hi-d/b ph b"><em class="hl-comment">// 功能编号</em></strong>
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<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">char</strong> bias; <strong class="+ topic/ph hi-d/b ph b"><em class="hl-comment">// 内部上下拉设置，一般无需修改</em></strong>
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<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">char</strong> drive; <strong class="+ topic/ph hi-d/b ph b"><em class="hl-comment">// 驱动能力，一般不需要修改</em></strong>
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<strong class="hl-keyword">char</strong> * name; <strong class="+ topic/ph hi-d/b ph b"><em class="hl-comment">// 引脚名称字符串，例如 "PA.0"</em></strong>
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};
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</pre>
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</div><div class="- topic/p p" data-ofbid="d56073e107__20250519091508">例如 PA.0 和 PA.1
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引脚：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__pre_evv_trv_1dc" data-ofbid="id__pre_evv_trv_1dc"><strong class="hl-keyword">struct</strong> aic_pinmux aic_pinmux_config[] = {
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#ifdef AIC_USING_UART0
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<em class="hl-comment">/* uart0 */</em>
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{<span class="hl-number">5</span>, PIN_PULL_DIS, <span class="hl-number">3</span>, <span class="hl-string">"PA.0"</span>}, <em class="hl-comment">// PA.0 配置功能 5，用作串口 0</em>
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{<span class="hl-number">5</span>, PIN_PULL_DIS, <span class="hl-number">3</span>, <span class="hl-string">"PA.1"</span>}, <em class="hl-comment">// PA.1 配置功能 5，用作串口 0</em>
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#endif
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...
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}；
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</pre></div><div class="- topic/p p" data-ofbid="d56073e111__20250519091508">更改接口配置时，确保 pinmux 没有冲突，对于 V1.1.2 及以后的 SDK，pinmux
|
||
冲突会有提示警告，警告示例如下:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_gvc_3vn_y2c" data-ofbid="id__codeblock_gvc_3vn_y2c">!!! Current pinmux conflicts! The conflicting pin:
|
||
|
||
PIN LINES (target\d21x\demo128-nand\pinmux.c)
|
||
PE.<span class="hl-number">16</span>: <span class="hl-number">370</span>: {<span class="hl-number">4</span>,PIN_PULL_DIS,<span class="hl-number">3</span>,<span class="hl-string">"PE.16"</span>},</pre></div><p class="- topic/p p" data-ofbid="d56073e118__20250519091508"></p><div class="- topic/p p" data-ofbid="d56073e120__20250519091508">如出现冲突，说明一个引脚配置了多个功能，需要修改引脚配置，引脚冲突示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_xh2_4xn_y2c" data-ofbid="id__codeblock_xh2_4xn_y2c"> {<span class="hl-number">4</span>, PIN_PULL_DIS, <span class="hl-number">3</span>, <span class="hl-string">"PE.16"</span>},
|
||
{<span class="hl-number">1</span>, PIN_PULL_DIS, <span class="hl-number">3</span>, <span class="hl-string">"PE.16"</span>},</pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d56073e130__20250519091508">在特殊情况下，可能需要按照下列流程配置烧录引脚，否则可略过此步。<p class="- topic/p p" data-ofbid="d56073e132__20250519091508">在拉低烧录引脚后上电开机的情况下，可以让芯片进入烧录模式
|
||
。正常情况下，不需要配置烧录引脚，SDK 默认配置 PA0 作为烧录引脚。</p><div class="- topic/p p" data-ofbid="d56073e134__20250519091508">
|
||
<div class="- topic/note note important note_important" id="id__note_qzm_3xn_y2c" data-ofbid="id__note_qzm_3xn_y2c"><span class="note__title">重要：</span> 如有需要，按照下列说明更改烧录引脚。对于 D21x，配置
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">/target/SoC/board/pack/ddr_init.json
|
||
</span>文件。对于其他芯片，例如 D12x，配置
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">/target/SoC/board/pack/pbp_cfg.json</span> 文件。</div>
|
||
</div><div class="- topic/p p" data-ofbid="d56073e145__20250519091508">配置示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_dgj_clb_w2c" data-ofbid="id__codeblock_dgj_clb_w2c"><span class="hl-string">"upgmode"</span>: { <em class="hl-comment">// Set PIN to enter BROM's upgrading mode</em>
|
||
<em class="hl-comment">// If set upgmode_pin_cfg_reg to "0", disable bootpin detect in PBP</em>
|
||
<span class="hl-string">"upgmode_pin_cfg_reg"</span>: <span class="hl-string">"0x18700080"</span>, <em class="hl-comment">// PINMUX REG, PA0</em>
|
||
<span class="hl-string">"upgmode_pin_cfg_val"</span>: <span class="hl-string">"0x10321"</span>, <em class="hl-comment">// PINMUX VAL</em>
|
||
<span class="hl-string">"upgmode_pin_input_reg"</span>: <span class="hl-string">"0x18700000"</span>, <em class="hl-comment">// INPUT VAL REG</em>
|
||
<span class="hl-string">"upgmode_pin_input_msk"</span>: <span class="hl-string">"0x1"</span>, <em class="hl-comment">// Bit MSK</em>
|
||
<span class="hl-string">"upgmode_pin_input_val"</span>: <span class="hl-string">"0x0"</span>, <em class="hl-comment">// Bit VAL</em>
|
||
<span class="hl-string">"upgmode_pin_pullup_dly"</span>: <span class="hl-string">"500"</span>, <em class="hl-comment">// n * 1us delay, limited to between 500us and 100ms</em>
|
||
},</pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d56073e150__20250519091508">如果板子设计使用了内部 LDO 给 CPU 供电，则需要使能内部 LDO，否则可略过此步。<p class="- topic/p p" data-ofbid="d56073e152__20250519091508">配置内置 LDO 供电的方法如下：</p><div class="- topic/p p" data-ofbid="d56073e154__20250519091508">
|
||
<ol class="- topic/ol ol" type="a" id="id__ol_u34_y2b_y2c" data-ofbid="id__ol_u34_y2b_y2c">
|
||
<li class="- topic/li li" data-ofbid="d56073e158__20250519091508">执行下列命令进入 bootloader 配置界面，使能 LDO：<ul class="- topic/ul ul" id="id__ul_ahr_4wn_y2c" data-ofbid="id__ul_ahr_4wn_y2c">
|
||
<li class="- topic/li li" data-ofbid="d56073e162__20250519091508">对于 V1.1.0 及之后的
|
||
SDK：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_u1w_pwn_y2c" data-ofbid="id__codeblock_u1w_pwn_y2c">bm</pre></li>
|
||
<li class="- topic/li li" data-ofbid="d56073e167__20250519091508">对于 V1.1.0 之前 SDK，先 lunch 到 bootloader 配置再使用
|
||
<code class="+ topic/ph pr-d/codeph ph codeph">me</code> 命令打开 bootloader 配置。</li>
|
||
</ul><div class="- topic/p p" id="id__p_es4_xwn_y2c" data-ofbid="id__p_es4_xwn_y2c">在配置界面使能
|
||
LDO：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_g4f_4mb_w2c" data-ofbid="id__codeblock_g4f_4mb_w2c">Board options>Using Syscfg>Syscfg Parameter
|
||
|
||
[*] SYSCFG LDO1X enable --->
|
||
(<span class="hl-number">8</span>) LDO1X voltage value level <<span class="hl-number">0</span>-<span class="hl-number">15</span>> </pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d56073e178__20250519091508">执行下列命令进入 rt-thread 配置界面，使能 LDO： <ul class="- topic/ul ul" id="id__ul_n1z_ywn_y2c" data-ofbid="id__ul_n1z_ywn_y2c">
|
||
<li class="- topic/li li" data-ofbid="d56073e182__20250519091508">对于 V1.1.0 及之后的
|
||
SDK：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_o1z_ywn_y2c" data-ofbid="id__codeblock_o1z_ywn_y2c">me</pre></li>
|
||
<li class="- topic/li li" data-ofbid="d56073e187__20250519091508">对于 V1.1.0 之前 SDK，先 lunch 到 rt-thread 配置后再使用
|
||
<code class="+ topic/ph pr-d/codeph ph codeph">me</code> 命令打开 rt-thread 配置界面。</li>
|
||
</ul><div class="- topic/p p" data-ofbid="d56073e193__20250519091508">在配置界面使能
|
||
LDO：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__d388e173" data-ofbid="id__d388e173">Board options>Using Syscfg>Syscfg Parameter
|
||
|
||
[*] SYSCFG LDO1X enable --->
|
||
(<span class="hl-number">8</span>) LDO1X voltage value level <<span class="hl-number">0</span>-<span class="hl-number">15</span>> </pre></div></li>
|
||
</ol>
|
||
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|
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