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< div class = "date inPage" > 16 May 2025< / div > < div style = "color: gray;" >
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Read time: 1 minute(s)
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< / div >
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< section class = "- topic/section section" id = "id__id2" data-ofbid = "id__id2" > < h2 class = "- topic/title title sectiontitle" > 准备测试环境< / h2 >
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< li class = "- topic/li li" data-ofbid = "d81663e35__20250519091512" > < strong class = "+ topic/ph hi-d/b ph b" > 硬件< / strong > < ul class = "- topic/ul ul simple" id = "id__ul_wrj_h3d_bdc" data-ofbid = "id__ul_wrj_h3d_bdc" >
< li class = "- topic/li li" data-ofbid = "d81663e40__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81663e42__20250519091512" > 开发板< / p >
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< / li >
< / ul > < / li >
< li class = "- topic/li li" id = "id__id4" data-ofbid = "id__id4" > < strong class = "+ topic/ph hi-d/b ph b" > 软件< / strong >
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< li class = "- topic/li li" data-ofbid = "d81663e53__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81663e55__20250519091512" > PC
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端的串口终端软件，用于
PC
和开发板进行串口通信< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81663e59__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81663e61__20250519091512" > < span class = "- topic/ph ph" > Luban-Lite< / span > 自带的 test-dma 工具< / p >
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< div class = "- topic/note note note note_note" id = "id__note_c24_s2p_mdc" data-ofbid = "id__note_c24_s2p_mdc" > < span class = "note__title" > 注：< / span > test-dma 只限于测试 Mem To Mem 的数据传输操作类型。< / div >
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< / li >
< / ul > < / li >
< / ul >
< / section >
< section class = "- topic/section section" id = "id__id5" data-ofbid = "id__id5" > < h2 class = "- topic/title title sectiontitle" > 使能 test-dma 命令工具< / h2 >
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< div class = "- topic/p p" data-ofbid = "d81663e78__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，按如下选择使能 DMA 驱动测试命令工具：
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_gby_bfy_bdc" data-ofbid = "id__codeblock_gby_bfy_bdc" > Drivers options --->
Drivers examples --->
[*] Enable DMA driver test command< / pre > < / div >
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< / section >
< section class = "- topic/section section" id = "id__section_hfk_hpf_fdc" data-ofbid = "id__section_hfk_hpf_fdc" > < h2 class = "- topic/title title sectiontitle" > 执行 test-dma
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测试< / h2 >
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< div class = "- topic/p p" data-ofbid = "d81663e95__20250519091512" >
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< ul class = "- topic/ul ul simple" id = "id__ul_asj_h3d_bdc" data-ofbid = "id__ul_asj_h3d_bdc" >
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< li class = "- topic/li li" data-ofbid = "d81663e99__20250519091512" >
< div class = "- topic/p p" data-ofbid = "d81663e101__20250519091512" > 执行下列命令测试 DMA 控制器的 Mem to Mem 的 copy
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操作：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_hcf_3fp_mdc" data-ofbid = "id__codeblock_hcf_3fp_mdc" > test_dma_memcpy< / pre > < / div >
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< div class = "- topic/p p" data-ofbid = "d81663e106__20250519091512" > 例如，使用 DMA 从源地址 (0x40d8f100) 拷贝 512 字节到目标地址
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(0x40d8f380)，执行下列命令：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_n34_gdk_5dc" data-ofbid = "id__codeblock_n34_gdk_5dc" > test_dma_memcpy < span class = "hl-number" > 512< / span > < / pre > < / div >
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< div class = "- topic/p p" data-ofbid = "d81663e111__20250519091512" > 输出示例如下，表示
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DMA 传输完成，并触发回调函数：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_otm_xbk_5dc" data-ofbid = "id__codeblock_otm_xbk_5dc" > DMA memcpy test: src = < span class = "hl-number" > 0x40d8f100< / span > , dest = < span class = "hl-number" > 0x40d8f380< / span > , len = < span class = "hl-number" > 0x200< / span >
DMA complete, callback....
DMA test succeed!
DMA memcpy < span class = "hl-number" > 512< / span > bytes, speed < span class = "hl-number" > 0.08< / span > MB/s< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81663e117__20250519091512" >
< div class = "- topic/p p" data-ofbid = "d81663e119__20250519091512" > 使用 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > dma_dump< / span > 查看 DMA 通道状态，例如查看 DMA 通道 0
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的详细信息，包括寄存器状态和配置：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_kq2_npt_mdc" data-ofbid = "id__codeblock_kq2_npt_mdc" > dma_dump < span class = "hl-number" > 0< / span > < / pre > < / div >
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< div class = "- topic/p p" data-ofbid = "d81663e127__20250519091512" > 输出示例如下所示：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_usm_ybk_5dc" data-ofbid = "id__codeblock_usm_ybk_5dc" > DMA Ch0: desc = < span class = "hl-number" > 0x0< / span >
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Common < strong class = "hl-keyword" > register< / strong > :
IRQ_EN < span class = "hl-number" > 0x4< / span > , IRQ_STA < span class = "hl-number" > 0x0< / span > , CH_STA < span class = "hl-number" > 0x0< / span > , GATE < span class = "hl-number" > 0x0< / span >
Ch0 < strong class = "hl-keyword" > register< / strong > :
Enable < span class = "hl-number" > 0x0< / span > , Mode < span class = "hl-number" > 0x0< / span > , Pause < span class = "hl-number" > 0x0< / span >
Task < span class = "hl-number" > 0xfffff800< / span > , Config < span class = "hl-number" > 0x4c004c0< / span > , Src < span class = "hl-number" > 0x40d8f304< / span > , Sink < span class = "hl-number" > 0x40d8f584< / span >
Left < span class = "hl-number" > 0x0< / span > , Package_cnt < span class = "hl-number" > 1< / span > < / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d81663e133__20250519091512" >
< p class = "- topic/p p" data-ofbid = "d81663e135__20250519091512" > < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > test_dma_memset< / span > ：测试 DMA 控制器的 memset
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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__id2" data-tocid = "id__id2" > 准备测试环境< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__id5" data-tocid = "id__id5" > 使能 test-dma 命令工具< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#id__section_hfk_hpf_fdc" data-tocid = "id__section_hfk_hpf_fdc" > 执行 test-dma
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