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id="concept_nww_hzh_pzb-d3752e5544-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN<span class="ph">、CAP</span>、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d3752e6799" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d3752e6799-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d3752e6799-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">
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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/lvgl/lvgl_special_func.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">屏幕旋转</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;"></div>
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<div class="- topic/body body">
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<div class="- topic/p p" data-ofbid="d175209e28__20250519091524">本节展示了基于
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LVGL 的 UI
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框架，实现横屏竖用、竖屏横用的方式。以下方式任选一种，详细流程如下：<ul class="- topic/ul ul" id="id__ul_u1x_1mh_fdc" data-ofbid="id__ul_u1x_1mh_fdc">
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<li class="- topic/li li" data-ofbid="d175209e32__20250519091524"><strong class="+ topic/ph hi-d/b ph b">静态旋转</strong><ol class="- topic/ol ol" id="id__ol_y5s_fmh_fdc" data-ofbid="id__ol_y5s_fmh_fdc">
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<li class="- topic/li li" data-ofbid="d175209e37__20250519091524">
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<div class="- topic/p p" data-ofbid="d175209e39__20250519091524">在 <span class="+ topic/ph sw-d/filepath ph filepath">packages/artinchip/lvgl-ui/lv_driver/lv_fbdev.h</span>
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文件中，使能 <span class="+ topic/keyword pr-d/parmname keyword parmname">USE_DRAW_BUF</span>
|
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宏定义，开启转屏缓存：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_tyx_bmh_fdc" data-ofbid="id__codeblock_tyx_bmh_fdc">...
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#<span class="hl-directive">define</span> USE_DRAW_BUF
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...</pre></div>
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</li>
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<li class="- topic/li li" data-ofbid="d175209e51__20250519091524">
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<p class="- topic/p p" data-ofbid="d175209e53__20250519091524">在
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<span class="+ topic/ph sw-d/filepath ph filepath">packages/artinchip/lvgl-ui/lv_driver/lv_port_disp.c</span>
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文件中，设置旋转角度。</p>
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<div class="- topic/p p" data-ofbid="d175209e59__20250519091524">如下所示，旋转角度设置为 90
|
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度：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_e4j_cmh_fdc" data-ofbid="id__codeblock_e4j_cmh_fdc"><em class="hl-comment">/* when define USE_DRAW_BUF, disp_drv.rotated can be
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LV_DISP_ROT_90/LV_DISP_ROT_180/LV_DISP_ROT_270
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*/</em>
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disp_drv.rotated = LV_DISP_ROT_<span class="hl-number">90</span>; <em class="hl-comment">// 设置旋转 90 度，共有三种角度可选：90、180、270</em></pre></div>
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</li>
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</ol></li>
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<li class="- topic/li li" data-ofbid="d175209e66__20250519091524"><strong class="+ topic/ph hi-d/b ph b">动态旋转</strong><p class="- topic/p p" data-ofbid="d175209e69__20250519091524">在程序运行到需要进行旋转屏幕时，调用 <span class="+ topic/keyword pr-d/apiname keyword apiname">lv_disp_set_rotation</span>。
|
||
</p><p class="- topic/p p" data-ofbid="d175209e74__20250519091524">API 定义在
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">packages/artinchip/lvgl-ui/lvgl/src/hal/lv_hal_disp.c</span>
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。</p></li>
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