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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/mem/memory-config-stack-size.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">栈大小配置</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
Read time: 1 minute(s)
</div><div class="- topic/body body"><section class="- topic/section section" id="id__id23" data-ofbid="id__id23"><h2 class="- topic/title title sectiontitle">中断栈</h2>
<div class="- topic/p p" data-ofbid="d83228e24__20250121171527"><span class="- topic/ph ph">Luban-Lite</span> 中断服务程序运行在独立的栈中,大小可以在 menuconfig
配置界面中修改:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_p1b_jsj_bdc" data-ofbid="id__codeblock_p1b_jsj_bdc">Board options ---&gt;
Mem Options ---&gt;
(<span class="hl-number">4096</span>) Interrupt stack siz <em class="hl-comment">// 大小为 4k</em></pre></div>
</section><section class="- topic/section section" id="id__rt-thread" data-ofbid="id__rt-thread"><h2 class="- topic/title title sectiontitle">RT-Thread 线程栈</h2>
<p class="- topic/p p" data-ofbid="d83228e36__20250121171527">Kernel 为 RT-Thread 时,几个典型线程的栈空间大小的配置:</p>
<ul class="- topic/ul ul" id="id__ul_atn_gcd_bdc" data-ofbid="id__ul_atn_gcd_bdc"><li class="- topic/li li" data-ofbid="d83228e40__20250121171527">
<div class="- topic/p p" data-ofbid="d83228e42__20250121171527"><code class="+ topic/ph pr-d/codeph ph codeph">main</code>
线程栈大小<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_qjk_jsj_bdc" data-ofbid="id__codeblock_qjk_jsj_bdc">Rt-Thread options ---&gt;
RT-Thread Components ---&gt;
(<span class="hl-number">2048</span>) Set main thread stack size <em class="hl-comment">// 大小为 2k</em></pre></div>
</li><li class="- topic/li li" data-ofbid="d83228e49__20250121171527">
<p class="- topic/p p" data-ofbid="d83228e51__20250121171527"><code class="+ topic/ph pr-d/codeph ph codeph">idle</code> 线程栈大小</p>
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_gcn_jsj_bdc" data-ofbid="id__codeblock_gcn_jsj_bdc">Rt-Thread options ---&gt;
RT-Thread Kernel ---&gt;
(<span class="hl-number">2048</span>) The stack size of idle thread <em class="hl-comment">// 大小为 2k</em>
(<span class="hl-number">4</span>) Alignment size <strong class="hl-keyword">for</strong> CPU architecture data access <em class="hl-comment">// CONFIG_RT_ALIGN_SIZE</em></pre>
<div class="- topic/note note important note_important" id="id__note_bdz_ksj_bdc" data-ofbid="id__note_bdz_ksj_bdc"><span class="note__title">重要:</span>
<p class="- topic/p p" data-ofbid="d83228e61__20250121171527">在使用系统 printf 打印浮点时,要求线程堆栈为 8 字节对齐。此时
<code class="+ topic/ph pr-d/codeph ph codeph">CONFIG_RT_ALIGN_SIZE</code> 需要设置为 8同时线程栈大小也是 8 的整数倍。</p>
</div>
</li><li class="- topic/li li" data-ofbid="d83228e68__20250121171527">
<p class="- topic/p p" data-ofbid="d83228e70__20250121171527"><code class="+ topic/ph pr-d/codeph ph codeph">shell</code> 线程栈大小</p>
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_jq4_jsj_bdc" data-ofbid="id__codeblock_jq4_jsj_bdc">Rt-Thread options ---&gt;
RT-Thread Components ---&gt;
MSH: command shell ---&gt;
(<span class="hl-number">4096</span>) The stack size <strong class="hl-keyword">for</strong> thread <em class="hl-comment">// 大小为 4k</em></pre>
</li></ul>
</section><section class="- topic/section section" id="id__baremetal" data-ofbid="id__baremetal"><h2 class="- topic/title title sectiontitle">Baremetal 用户栈</h2>
<div class="- topic/p p" data-ofbid="d83228e84__20250121171527">裸机环境时只有一个用户栈,栈大小如下配置:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_uvr_jsj_bdc" data-ofbid="id__codeblock_uvr_jsj_bdc">Baremetal options ---&gt;
(<span class="hl-number">8192</span>) Main loop stack <em class="hl-comment">// AIC_NORMALSTACK_SIZE, 大小为 8k</em></pre></div>
<div class="- topic/note note important note_important" id="id__note_ykx_lsj_bdc" data-ofbid="id__note_ykx_lsj_bdc"><span class="note__title">重要:</span>
<p class="- topic/p p" data-ofbid="d83228e91__20250121171527">在使用系统 printf 打印浮点时,要求线程堆栈为 8 字节对齐。此时 <code class="+ topic/ph pr-d/codeph ph codeph">AIC_NORMALSTACK_SIZE</code> 需要设置为
8 的整数倍。</p>
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