LPC MicrocontrollersのトピックLPC55S6x SD Card Response Timeout

LPC55S6x SD Card Response Timeout

alee1 — Tue, 09 Aug 2022 19:07:04 GMT

On the LPC55S6x I am getting a response timeout after CMD 8 for the SD card is called.

It does not seem to be a hardware issue, because I used an oscilloscope to verify that a response is sent.

The dark blue waveform is the clock, and the dark pink is the response.

Re: LPC55S6x SD Card Response Timeout

Alice_Yang — Thu, 11 Aug 2022 08:18:07 GMT

Hello,

How about first test the sdcard examples under sdk, does it can work well?

Alice

Re: LPC55S6x SD Card Response Timeout

alee1 — Thu, 11 Aug 2022 15:42:49 GMT

I have tested the sd card interrupt example and it did not work. As yo u cna see, the program does not continue after CMD 8. The sd card cannot initialize, so I doubt any of the examples can work. It stops at the function ProbeBusVoltage.

Re: LPC55S6x SD Card Response Timeout

Alice_Yang — Fri, 19 Aug 2022 07:49:12 GMT

Hello alee1,

Which SDK version do you used? How about the latest version SDK v2.12.0?

Do you use LPCxpresso55s69-evk board?

And what about your card capacity?

Alice