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< div class = "date inPage" > 16 May 2025< / div > < div style = "color: gray;" >
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Read time: 2 minute(s)
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< div class = "- topic/note note note note_note" id = "id__note_ftt_jjx_ddc" data-ofbid = "id__note_ftt_jjx_ddc" > < span class = "note__title" > 注：< / span > DE colorbar 优先级最高，进行其它测试前需要禁用 DE colorbar。< / div >
< / div >
< section class = "- topic/section section" id = "id__section_zvf_lfx_ddc" data-ofbid = "id__section_zvf_lfx_ddc" > < h2 class = "- topic/title title sectiontitle" > 打开调试开关< / h2 >
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< div class = "- topic/div div section" id = "id__id2" >
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< div class = "- topic/p p" data-ofbid = "d81347e41__20250519091512" > 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
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menuconfig 的功能配置界面，按如下选择，启用显示驱动的调试信息输出 < span class = "+ topic/keyword pr-d/apiname keyword apiname" > pr_debug()< / span >
，并编译显示驱动测试用例：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_d44_kfx_ddc" data-ofbid = "id__codeblock_d44_kfx_ddc" > Drivers options --->
Drivers debug --->
[*] Enable Display driver debug< / pre > < / div >
< / div >
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< / section >
< section class = "- topic/section section" id = "id__section_awf_lfx_ddc" data-ofbid = "id__section_awf_lfx_ddc" > < h2 class = "- topic/title title sectiontitle" > 启动显示纯色矩形< / h2 >
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< div class = "- topic/div div" >
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< div class = "- topic/p p" data-ofbid = "d81347e64__20250519091512" > 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，按如下选择：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_gvd_mfx_ddc" data-ofbid = "id__codeblock_gvd_mfx_ddc" > Board options --->
Graphics Support --->
[*] Display color block< / pre > < / div >
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< p class = "- topic/p p" data-ofbid = "d81347e75__20250519091512" > 系统启动时， < / p >
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< div class = "- topic/div div figure align-default" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_utt_3fx_ddc" src = "../../../images/display/lite_color_block.jpg" width = "576" alt = "/lite_color_block" / > < / div > < br / >
< / div >
< / div >
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< / section >
< section class = "- topic/section section" id = "id__section_pp5_mfx_ddc" data-ofbid = "id__section_pp5_mfx_ddc" > < h2 class = "- topic/title title sectiontitle" > 调试 DE Color Bar 模式< / h2 >
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< div class = "- topic/div div" >
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< div class = "- topic/p p" data-ofbid = "d81347e96__20250519091512" > 显示引擎 Color Bar 模式，忽略 framebuffer 数据，直接向显示接口传输 Color Bar 数据。Color Bar
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模式仅供调试使用。< div class = "- topic/note note note note_note" id = "id__note_ezn_qn3_ddc" data-ofbid = "id__note_ezn_qn3_ddc" > < span class = "note__title" > 注：< / span >
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< p class = "- topic/p p" data-ofbid = "d81347e100__20250519091512" > DE Color Bar 优先级最高，进行其它测试前需要禁用 DE Color Bar。< / p >
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< / div > < / div >
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< ul class = "- topic/ul ul" id = "id__ul_dwv_fjx_ddc" data-ofbid = "id__ul_dwv_fjx_ddc" >
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< li class = "- topic/li li" data-ofbid = "d81347e106__20250519091512" >
< div class = "- topic/p p" data-ofbid = "d81347e108__20250519091512" > 使能 Color Bar
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模式命令:< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_alw_xgx_ddc" data-ofbid = "id__codeblock_alw_xgx_ddc" > m < span class = "hl-number" > 0x18a00004< / span > < span class = "hl-number" > 1< / span >
m < span class = "hl-number" > 0x18a00008< / span > < span class = "hl-number" > 1< / span > < / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81347e114__20250519091512" >
< div class = "- topic/p p" data-ofbid = "d81347e116__20250519091512" > 禁用 Color Bar
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模式命令:< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_fkt_ygx_ddc" data-ofbid = "id__codeblock_fkt_ygx_ddc" > m < span class = "hl-number" > 0x18a00004< / span > < span class = "hl-number" > 0< / span >
m < span class = "hl-number" > 0x18a00008< / span > < span class = "hl-number" > 1< / span > < / pre > < / div >
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< / li >
< / ul >
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< div class = "- topic/div div figure align-default" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_vtt_3fx_ddc" src = "../../../images/display/lite_color_bar.jpg" width = "576" alt = "/lite_color_bar" / > < / div > < br / >
< / div >
< / div >
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< / section >
< section class = "- topic/section section" id = "id__section_p5w_4fx_ddc" data-ofbid = "id__section_p5w_4fx_ddc" > < h2 class = "- topic/title title sectiontitle" > 测试背景色输出< / h2 >
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< div class = "- topic/div div" >
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< p class = "- topic/p p" data-ofbid = "d81347e141__20250519091512" > 显示引擎忽略 framebuffer 数据，输出特定背景色 。背景色测试可用于检测 RGB pin 的输出状态是否正确。< / p >
< div class = "- topic/p p" data-ofbid = "d81347e144__20250519091512" >
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< ul class = "- topic/ul ul" id = "id__ul_ltc_pjx_ddc" data-ofbid = "id__ul_ltc_pjx_ddc" >
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< li class = "- topic/li li" data-ofbid = "d81347e148__20250519091512" >
< div class = "- topic/p p" data-ofbid = "d81347e150__20250519091512" > 设置背景色命令：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_tk2_zgx_ddc" data-ofbid = "id__codeblock_tk2_zgx_ddc" > bg_color -m < span class = "hl-number" > 1< / span > -r < span class = "hl-number" > 128< / span > -g < span class = "hl-number" > 0< / span > -b < span class = "hl-number" > 0< / span > < / pre > < / div >
< p class = "- topic/p p" data-ofbid = "d81347e155__20250519091512" > 上述命令生效后，仅 R7 引脚为高电平，其余数据 pin 为低电平。< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81347e159__20250519091512" > 禁用背景色命令：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_jrp_zgx_ddc" data-ofbid = "id__codeblock_jrp_zgx_ddc" > bg_color -m < span class = "hl-number" > 0< / span > < / pre > < / li >
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< / ul >
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< / div >
< div class = "- topic/div div figure align-default" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_wtt_3fx_ddc" src = "../../../images/display/lite_bg_red_128.jpg" width = "576" alt = "/lite_bg_red_128" / > < / div > < br / >
< / div >
< / div >
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< / section >
< section class = "- topic/section section" id = "id__section_s3t_pfx_ddc" data-ofbid = "id__section_s3t_pfx_ddc" > < h2 class = "- topic/title title sectiontitle" > 获取 framebuffer 渐变色块< / h2 >
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< div class = "- topic/div div" >
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< p class = "- topic/p p" data-ofbid = "d81347e185__20250519091512" > CPU 在 framebuffer 上绘制红，绿，蓝，白四种矩形渐变色块。色块高度自适应屏幕，宽度固定 256，
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进行渐变，并在对角处附带标定信息。< / p >
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< div class = "- topic/p p" data-ofbid = "d81347e188__20250519091512" > framebuffer
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绘制渐变色块命令：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_qs1_1hx_ddc" data-ofbid = "id__codeblock_qs1_1hx_ddc" > test_fb -b< / pre > < / div >
< div class = "- topic/div div figure align-default" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_xtt_3fx_ddc" src = "../../../images/display/lite_testfb_color_block.jpg" width = "576" alt = "/lite_testfb_color_block" / > < / div > < br / >
< / div >
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< ul class = "- topic/ul ul simple" id = "id__ul_ytt_3fx_ddc" data-ofbid = "id__ul_ytt_3fx_ddc" >
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< li class = "- topic/li li" data-ofbid = "d81347e204__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81347e206__20250519091512" > < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > test_fb-b< / span > 命令直接修改 framebuffer 内容，显示效果不可逆。< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81347e212__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81347e214__20250519091512" > 支持 ARGB8888 和 RGB565 格式 framebuffer。< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81347e218__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81347e220__20250519091512" > RGB565 格式，色块从 0-255 进行渐变， < / p >
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< / li >
< / ul >
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< / div >
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< / section >
< / div >
< / article > < / main > < / 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 = "#id__section_zvf_lfx_ddc" data-tocid = "id__section_zvf_lfx_ddc" > 打开调试开关< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_awf_lfx_ddc" data-tocid = "id__section_awf_lfx_ddc" > 启动显示纯色矩形< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_pp5_mfx_ddc" data-tocid = "id__section_pp5_mfx_ddc" > 调试 DE Color Bar 模式< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_p5w_4fx_ddc" data-tocid = "id__section_p5w_4fx_ddc" > 测试背景色输出< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_s3t_pfx_ddc" data-tocid = "id__section_s3t_pfx_ddc" > 获取 framebuffer 渐变色块< / a > < / div > < / li > < / ul > < / div >
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font-family: "Lucida Console", "Courier New", monospace;
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