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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/tsensor/tsensor-debug-guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">调试指南</h1><div class="date inPage">18 Dec 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d130646e23__20250121171605">本节介绍 TSensor 调试步骤。</p><section class="- topic/section section" id="tsensor_debug_guide__section_ykz_jbv_mdc" data-ofbid="tsensor_debug_guide__section_ykz_jbv_mdc"><h2 class="- topic/title title sectiontitle">打开调试开关</h2>
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<ol class="- topic/ol ol" id="tsensor_debug_guide__ol_np3_1kz_sdc" data-ofbid="tsensor_debug_guide__ol_np3_1kz_sdc"><li class="- topic/li li" data-ofbid="d130646e31__20250121171605">
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<div class="- topic/div div">
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<div class="- topic/p p" data-ofbid="d130646e35__20250121171605">在 SDK 根目录下，执行下列命令，进入 kernel
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的功能配置界面：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_wg1_3ml_sdc" data-ofbid="tsensor_debug_guide__codeblock_wg1_3ml_sdc">make kernel-menuconfig</pre></div>
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<p class="- topic/p p" data-ofbid="d130646e40__20250121171605">或使用简写命令</p>
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<div class="- topic/p p" data-ofbid="d130646e43__20250121171605">
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_uss_hml_sdc" data-ofbid="tsensor_debug_guide__codeblock_uss_hml_sdc">make km</pre>
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</div>
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</div>
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</li><li class="- topic/li li" data-ofbid="d130646e50__20250121171605">在内核配置界面，按如下选择，打开调试开关：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_e5g_q1t_c1c" data-ofbid="tsensor_debug_guide__codeblock_e5g_q1t_c1c">Linux
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Kernel hacking
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ArtInChip Debug
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[*] Thermal Sensor driver debug</pre><div class="- topic/p p" data-ofbid="d130646e54__20250121171605">打开 DEBUG 选项后：<ul class="- topic/ul ul" id="tsensor_debug_guide__ol_ucp_mss_c1c" data-ofbid="tsensor_debug_guide__ol_ucp_mss_c1c"><li class="- topic/li li" data-ofbid="d130646e57__20250121171605">
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<p class="- topic/p p" data-ofbid="d130646e59__20250121171605">驱动以<code class="+ topic/ph pr-d/codeph ph codeph">-O0</code> 编译。</p>
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</li><li class="- topic/li li" data-ofbid="d130646e65__20250121171605">
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<p class="- topic/p p" data-ofbid="d130646e67__20250121171605"><span class="+ topic/keyword pr-d/parmname keyword parmname">pr_dbg()</span> 和 <span class="+ topic/keyword pr-d/parmname keyword parmname">dev_dbg()</span> 调试信息会被编译。</p>
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<div class="- topic/p p" id="tsensor_debug_guide__p_wvf_n3w_mdc" data-ofbid="tsensor_debug_guide__p_wvf_n3w_mdc">在系统运行时，如果要打印 <span class="+ topic/keyword pr-d/parmname keyword parmname">pr_dbg()</span> 和
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<span class="+ topic/keyword pr-d/parmname keyword parmname">dev_dbg()</span> 信息，还需要调整 <span class="+ topic/keyword pr-d/parmname keyword parmname">loglevel</span> 为
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8，可以通过以下两种方式实现：<ul class="- topic/ul ul" id="tsensor_debug_guide__ol_vcp_mss_c1c" data-ofbid="tsensor_debug_guide__ol_vcp_mss_c1c"><li class="- topic/li li" data-ofbid="d130646e87__20250121171605">
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<p class="- topic/p p" data-ofbid="d130646e89__20250121171605">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中修改
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<span class="+ topic/keyword pr-d/parmname keyword parmname">bootargs</span>，增加
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<span class="+ topic/keyword pr-d/parmname keyword parmname">“loglevel=8”</span></p>
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</li><li class="- topic/li li" data-ofbid="d130646e100__20250121171605">
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<div class="- topic/p p" data-ofbid="d130646e102__20250121171605">在板子启动到 Linux Shell
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后，执行下列命令：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__pre_wcp_mss_c1c" data-ofbid="tsensor_debug_guide__pre_wcp_mss_c1c">echo8 > /proc/sys/kernel/printk</pre></div>
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</li></ul></div>
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</li></ul></div></li></ol>
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</section><section class="- topic/section section" id="tsensor_debug_guide__section_cgx_pbv_mdc" data-ofbid="tsensor_debug_guide__section_cgx_pbv_mdc"><h2 class="- topic/title title sectiontitle">Sysfs 节点</h2>
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<div class="- topic/p p" data-ofbid="d130646e114__20250121171605">
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<ol class="- topic/ol ol" id="tsensor_debug_guide__ol_ehk_p1t_c1c" data-ofbid="tsensor_debug_guide__ol_ehk_p1t_c1c"><li class="- topic/li li" id="tsensor_debug_guide__li_sysfs_status_tsensor" data-ofbid="tsensor_debug_guide__li_sysfs_status_tsensor"><strong class="+ topic/ph hi-d/b ph b">状态信息</strong><div class="- topic/p p" data-ofbid="d130646e120__20250121171605">在 TSensor 驱动初始化成功后，会在 Sysfs 中注册生成一个 <code class="+ topic/ph pr-d/codeph ph codeph">status</code> 节点，其中打印了当前的 TSensor
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配置及状态信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_m2y_wss_c1c" data-ofbid="tsensor_debug_guide__codeblock_m2y_wss_c1c">cat /sys/devices/platform/soc/<span class="hl-number">19253000.</span>tsen/status</pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_dql_y3z_sdc" data-ofbid="tsensor_debug_guide__codeblock_dql_y3z_sdc">In Thermal Sensor V1.<span class="hl-number">00</span>:
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ch0: aic-tsen-cpu, Enable: <span class="hl-number">1</span>, Value: <span class="hl-number">0</span>
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ch1: aic-tsen-adc, Enable: <span class="hl-number">1</span>，Value: <span class="hl-number">0</span></pre></div></li><li class="- topic/li li" id="tsensor_debug_guide__li_sysfs_temperature_read" data-ofbid="tsensor_debug_guide__li_sysfs_temperature_read"><strong class="+ topic/ph hi-d/b ph b">读取温度</strong><p class="- topic/p p" data-ofbid="d130646e132__20250121171605">Linux Thermal 子系统提供一些 Sysfs
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节点，可以用来获取温度值以及其他参数信息。</p><div class="- topic/p p" data-ofbid="d130646e134__20250121171605">例如，<span class="+ topic/ph sw-d/filepath ph filepath">/sys/class/thermal/</span>
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目录提供了下列与温度相关的信息：<ul class="- topic/ul ul" id="tsensor_debug_guide__ul_qzd_1jz_sdc" data-ofbid="tsensor_debug_guide__ul_qzd_1jz_sdc"><li class="- topic/li li" data-ofbid="d130646e140__20250121171605">列出可用的 thermal
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zone：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_mkx_v1t_c1c" data-ofbid="tsensor_debug_guide__codeblock_mkx_v1t_c1c">cd /sys/class/thermal/</pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_y5t_y3z_sdc" data-ofbid="tsensor_debug_guide__codeblock_y5t_y3z_sdc">ls</pre><div class="- topic/p p" data-ofbid="d130646e146__20250121171605">输出示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_kgn_1jz_sdc" data-ofbid="tsensor_debug_guide__codeblock_kgn_1jz_sdc">thermal_zone0 thermal_zone1</pre></div></li><li class="- topic/li li" data-ofbid="d130646e150__20250121171605">进入 <span class="+ topic/ph sw-d/filepath ph filepath">thermal_zone0</span> 目录，查看特定 thermal zone
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的相关信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_il2_bjz_sdc" data-ofbid="tsensor_debug_guide__codeblock_il2_bjz_sdc">cd thermal_zone0/</pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_h4k_cjz_sdc" data-ofbid="tsensor_debug_guide__codeblock_h4k_cjz_sdc">ls</pre><div class="- topic/p p" data-ofbid="d130646e159__20250121171605">输出示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_ihw_cjz_sdc" data-ofbid="tsensor_debug_guide__codeblock_ihw_cjz_sdc">available_policies k_po policy type
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hwmon0 k_pu slope uevent
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integral_cutoff mode subsystem
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k_d offset sustainable_power
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k_i passive temp</pre><ul class="- topic/ul ul" id="tsensor_debug_guide__ul_jvy_pjz_sdc" data-ofbid="tsensor_debug_guide__ul_jvy_pjz_sdc"><li class="- topic/li li" data-ofbid="d130646e164__20250121171605">读取温度值<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_xsd_djz_sdc" data-ofbid="tsensor_debug_guide__codeblock_xsd_djz_sdc">cat temp</pre><div class="- topic/p p" data-ofbid="d130646e168__20250121171605">输出示例如下，表示当前温度为
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0：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_xbx_djz_sdc" data-ofbid="tsensor_debug_guide__codeblock_xbx_djz_sdc"><span class="hl-number">0</span></pre></div></li><li class="- topic/li li" data-ofbid="d130646e172__20250121171605">
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<div class="- topic/p p" data-ofbid="d130646e174__20250121171605">读取类型信息<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_yhh_2jz_sdc" data-ofbid="tsensor_debug_guide__codeblock_yhh_2jz_sdc">cat type</pre></div>
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<div class="- topic/p p" data-ofbid="d130646e179__20250121171605">输出示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_debug_guide__codeblock_k1s_fjz_sdc" data-ofbid="tsensor_debug_guide__codeblock_k1s_fjz_sdc">aic-tsen-cpu</pre></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="#tsensor_debug_guide__section_ykz_jbv_mdc" data-tocid="tsensor_debug_guide__section_ykz_jbv_mdc">打开调试开关</a></div></li><li class="section-item"><div class="section-title"><a href="#tsensor_debug_guide__section_cgx_pbv_mdc" data-tocid="tsensor_debug_guide__section_cgx_pbv_mdc">Sysfs 节点</a></div></li></ul></div>
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