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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/lvgl/lvgl_configure.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">参数配置</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__section_jh2_hpf_fdc" data-ofbid="id__section_jh2_hpf_fdc"><h2 class="- topic/title title sectiontitle">使能 LVGL 库和 LVGL demo</h2>
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<div class="- topic/p p" data-ofbid="d308925e24__20250121171814">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入 menuconfig
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的功能配置界面，配置如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rjt_pyf_fdc" data-ofbid="id__codeblock_rjt_pyf_fdc">Application options --->
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*** Filesystem related ***
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[*] Using File System Image <span class="hl-number">0</span> --->
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--- Using File System Image <span class="hl-number">0</span>
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Select File System Type (FATFS) --->
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(packages/artinchip/lvgl-ui/aic_demo/base_demo/lvgl_src/) Data Directory
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(app.fatfs) Image Name
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[*] <strong class="hl-keyword">auto</strong> calcuate image size
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[ ] Using File System Image <span class="hl-number">1</span> ----
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*** lvgl demo select related ***
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-*- LVGL (official): powerful and easy-to-use embedded GUI library --->
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(<span class="hl-number">20</span>) Priority of LVGL thread
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(<span class="hl-number">32768</span>) Stack size of LVGL thread
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(<span class="hl-number">5</span>) Display refresh period (ms)
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[ ] Support SquareLine Studio
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[ ] Enable built-in examples
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[ ] Enable built-in demos
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-*- ArtInChip lvgl demo
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select lvgl demo (lvgl demo with basic function) --->
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(X) lvgl demo with basic function
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( ) lvgl demo of meter
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||
(<span class="hl-number">16</span>) LVGL color depth(<span class="hl-number">32</span>/<span class="hl-number">16</span>)
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(<span class="hl-number">8</span>) LVGL image cached number
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(/rodata/lvgl_data) LVGL Resource Directory</pre></div>
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<div class="- topic/p p" data-ofbid="d308925e35__20250121171814">根目录下有多个挂载点<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rll_qyf_fdc" data-ofbid="id__codeblock_rll_qyf_fdc">/ram --挂载 ramdisk 文件系统
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/rodata --对应 Using File System Image <span class="hl-number">0</span> 中 Data Directory 中的资源文件
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/data --对应 Using File System Image <span class="hl-number">1</span> 中 Data Directory 中的资源文件
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/sdcard --挂载 SD 卡
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/udisk --挂载 U 盘</pre></div>
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<div class="- topic/p p" data-ofbid="d308925e40__20250121171814">资源文件配置说明：<ol class="- topic/ol ol arabic simple" id="id__ol_gbs_4yf_fdc" data-ofbid="id__ol_gbs_4yf_fdc"><li class="- topic/li li" data-ofbid="d308925e43__20250121171814">
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||
<p class="- topic/p p" data-ofbid="d308925e45__20250121171814">不同的 demo 需要配置对应的资源路径，例如：lvgl demo with basic function
|
||
对应的资源路径为：packages/artinchip/lvgl-ui/aic_demo/base_demo/lvgl_src/</p>
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</li><li class="- topic/li li" data-ofbid="d308925e48__20250121171814">
|
||
<p class="- topic/p p" data-ofbid="d308925e50__20250121171814">上述配置中使用了 File System Image 0 分区来存储 demo 资源文件，所以我们配置 lvgl
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||
的资源路径为/rodata/lvgl_data</p>
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</li></ol></div>
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<div class="- topic/note note note note_note" id="id__note_pbp_qn3_ddc" data-ofbid="id__note_pbp_qn3_ddc"><span class="note__title">注：</span>
|
||
<ol class="- topic/ol ol arabic simple" id="id__ol_hbs_4yf_fdc" data-ofbid="id__ol_hbs_4yf_fdc"><li class="- topic/li li" data-ofbid="d308925e57__20250121171814">
|
||
<p class="- topic/p p" data-ofbid="d308925e59__20250121171814">LVGL color depth 可以配置为 16 或 32，16 表示显示 buffer 格式为 rgb565，32 表示显示格式为
|
||
argb8888， 此格式需要和 display 驱动中的 framebuffer 格式对应</p>
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</li><li class="- topic/li li" data-ofbid="d308925e62__20250121171814">
|
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<p class="- topic/p p" data-ofbid="d308925e64__20250121171814">可通过 Stack size of LVGL thread 配置 LVGL 线程的堆栈大小，需配置合适的大小避免出现 stack 溢出</p>
|
||
</li><li class="- topic/li li" data-ofbid="d308925e67__20250121171814">
|
||
<p class="- topic/p p" data-ofbid="d308925e69__20250121171814">可以通过 LVGL image cached number 来配置图片缓存张数，可以通过图片缓存机制来提升 UI
|
||
流畅度，但是缓存越多，占用内存也越多</p>
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