Use the eSDHC ，CMD0 issue error

[sunsun]

Hello！

When I use the eSDHC module，I try to issue the CMD0 commend to SD Card，one error was occur。

I am sure ，the I/O configuration is right， and the waveform，as follows:

Can see CMD0 send abort，and as the same time ，the bit 18 （CEBE）and the bit 17（CCE）of Interrupt Status Register (IRQSTAT) is ‘1’。

Can you give me some suggestion to save this problem？

Thanks！

[igorpadykov]

Hi Sun

this may be hardware issue and one can try with baremetal sdk test

checking signals with oscilloscope

rt-thread/bsp/imx6sx/iMX6_Platform_SDK/sdk/drivers/usdhc at master · RT-Thread/rt-thread · GitHub 

Best regards
igor
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