[Submin 0]

To be short: I have the working code but trying to better understand the quite ambiguous documentation.  For that purpose, I intentionally set up the argument for ACMD41 command for the voltage range below acceptable for my SDHD card. In my case, it was 2.0 - 2.1v. What happened next is the subject of my question: After that action, I'm not able to send ANY command to the card. No matter what I'm doing,  I'm getting the CMD time out. I tried to remove the card, turn the power off/on - nothing helps. But if I plug the same card into PC, which finds it, does something, what I'd like to know, and then if I put it back, it works as expected. Of course, if I do not send erroneous command. What initialization command I'm missing. My guess is that somehow I need to reset the OCR. The sequence of commands I'm applying is Go Idle State(0) and Send If Condition(8), ACMD41... and so on. And I can basically, lock the card for my code,  as described above.

 

Thanks in advance. 

PS: I can easily read Russian but can't type in Russian from my office. Sorry about that.

[Obam 30]

Where is ARM microcontrollers here?

[Submin 0]

 

39 минут назад, Obam сказал:

Where is ARM microcontrollers here?

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