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< section class = "- topic/section section" id = "id__sd" data-ofbid = "id__sd" > < h2 class = "- topic/title title sectiontitle" > SD 卡初始化失败< / h2 >
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< div class = "- topic/div div section" id = "id__id2" >
< strong class = "+ topic/ph hi-d/b ph b" > 现象< / strong >
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< p class = "- topic/p p" data-ofbid = "d149697e38__20250519091521" > 启动后， < / p > < / div >
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< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_tlx_cyh_bdc" data-ofbid = "id__codeblock_tlx_cyh_bdc" > [I] aic_sdmc_probe()< span class = "hl-number" > 571< / span > SDMC1 driver loaded
Reboot action: Worm-Reset, reason: Extend-Reset
Startup time: < span class = "hl-number" > 50.556< / span > sec (from Power-On-Reset)
< span class = "hl-number" > 01< / span > -< span class = "hl-number" > 01< / span > < span class = "hl-number" > 08< / span > :< span class = "hl-number" > 59< / span > :< span class = "hl-number" > 23< / span > I/SDIO: SD card capacity < span class = "hl-number" > 30547968< / span > KB.
< span class = "hl-number" > 01< / span > -< span class = "hl-number" > 01< / span > < span class = "hl-number" > 08< / span > :< span class = "hl-number" > 59< / span > :< span class = "hl-number" > 23< / span > I/SDMC: SDMC1 BW < span class = "hl-number" > 1< / span > , sclk < span class = "hl-number" > 50400< / span > KHz, clk < span class = "hl-number" > 25000< / span > KHz(< span class = "hl-number" > 25200< / span > KHz), div < span class = "hl-number" > 1< / span > -< span class = "hl-number" > 1< / span >
[I] aic_sdmc_set_iocfg()< span class = "hl-number" > 423< / span > SDMC1 Buswidth < span class = "hl-number" > 4< / span > , DDR mode < span class = "hl-number" > 0< / span > , Current clock: < span class = "hl-number" > 25000< / span > KHz
found part[< span class = "hl-number" > 0< / span > ], begin: < span class = "hl-number" > 512< / span > , size: < span class = "hl-number" > 4194303.1023< / span > GB # 关键信息
< span class = "hl-number" > 01< / span > -< span class = "hl-number" > 01< / span > < span class = "hl-number" > 08< / span > :< span class = "hl-number" > 59< / span > :< span class = "hl-number" > 23< / span > I/SDIO: try to mount file system!
can< span class = "hl-string" > 't find device:sd0p0 to be mounted.
< / span > < span class = "hl-number" > 01< / span > -< span class = "hl-number" > 01< / span > < span class = "hl-number" > 08< / span > :< span class = "hl-number" > 59< / span > :< span class = "hl-number" > 23< / span > I/SDIO: try to mount file system!
< span class = "hl-number" > 01< / span > -< span class = "hl-number" > 01< / span > < span class = "hl-number" > 08< / span > :< span class = "hl-number" > 59< / span > :< span class = "hl-number" > 23< / span > E/DFS: mount fs[elm] device[sd0] to / failed.
< / pre >
< div class = "- topic/div div section" id = "id__id3" >
< strong class = "+ topic/ph hi-d/b ph b" > 原因分析< / strong >
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< p class = "- topic/p p" data-ofbid = "d149697e49__20250519091521" > SD 卡采用了 GPT（ ） ， （
Record） < / p > < p class = "- topic/p p" data-ofbid = "d149697e51__20250519091521" > 在关键信息
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< code class = "+ topic/ph pr-d/codeph ph codeph" > foundpart[0],begin:512,size:4194303.1023GB< / code > 之前，扫描到 SD 卡容量是
32 GB： < code class = "+ topic/ph pr-d/codeph ph codeph" > 30547968KB< / code > , 容量和上面的分区 0 大小不符。< / p > < / div >
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< div class = "- topic/div div" > < strong class = "+ topic/ph hi-d/b ph b" > 解决方案< / strong > < p class = "- topic/p p" data-ofbid = "d149697e63__20250519091521" > 备份好 SD 卡的数据后，< strong class = "+ topic/ph hi-d/b ph b" > 以管理员身份< / strong > 运行 AiBurn，
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分区表格式：< / p > < figure class = "- topic/fig fig fignone" id = "id__fig_i2r_3kh_tdc" data-ofbid = "id__fig_i2r_3kh_tdc" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "id__image_wlx_cyh_bdc" src = "../../../images/sdmc/format_sdcard.png" width = "576" alt = "format_sdcard" / > < / div > < br / >
< / figure > < / div >
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< section class = "- topic/section section" id = "id__u-sd" data-ofbid = "id__u-sd" > < h2 class = "- topic/title title sectiontitle" > U 盘和 SD 卡不能同时挂载< / h2 >
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< div class = "- topic/div div section" id = "id__id4" >
< strong class = "+ topic/ph hi-d/b ph b" > 现象< / strong >
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< p class = "- topic/p p" data-ofbid = "d149697e88__20250519091521" > 配置好 U 盘挂载功能和 SD 卡挂载功能，单独插入 U 盘或 SD 卡，可正常使用，同时插入后，无法同时使用。< / p > < / div >
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< div class = "- topic/div div section" id = "id__id5" >
< strong class = "+ topic/ph hi-d/b ph b" > 原因分析< / strong >
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< p class = "- topic/p p" data-ofbid = "d149697e96__20250519091521" > SDK 默认配置中，对于文件系统挂载的数量和类型做了限制以节约资源。 通常情况下,进入 menuconfig 配置菜单修改如下两个 DFS 的配置即可同时挂载 U
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盘和 SD 卡。< / p > < / div >
< div class = "- topic/div div section" id = "id__id6" >
< strong class = "+ topic/ph hi-d/b ph b" > 数量及类型< / strong >
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_xlx_cyh_bdc" data-ofbid = "id__codeblock_xlx_cyh_bdc" > Rt-Thread options --->
RT-Thread Components --->
[*] DFS: device virtual file system --->
(< span class = "hl-number" > 16< / span > ) The maximal number of mounted file system
(< span class = "hl-number" > 8< / span > ) The maximal number of file system type
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< div class = "- topic/div div section" id = "id__id7" >
< strong class = "+ topic/ph hi-d/b ph b" > 卷数量< / strong >
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_ylx_cyh_bdc" data-ofbid = "id__codeblock_ylx_cyh_bdc" > Rt-Thread options --->
RT-Thread Components --->
[*] DFS: device virtual file system --->
[*] Enable elm-chan fatfs
elm-chan< span class = "hl-string" > 's FatFs, Generic FAT Filesystem Module --->
< / span > (< span class = "hl-number" > 8< / span > ) Number of volumes (logical drives) to be used.
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