K4ktus
Posts: 20
Joined: Sun Jun 30, 2019 5:22 pm

External SD card over SDIO interface

Wed Jul 03, 2019 4:10 pm

I tried to add microSD card reader over SDIO interface to my Pi 3 B+.
I connected everything according to this tutorial
https://ralimtek.com/raspberry%20pi/ele ... y_sd_card/
and added

Code: Select all

dtoverlay=sdio,poll_once=off
to my config.txt.
Pi works fine until I plug the SD card in.
When I do it, it's never detected and after about 5 seconds Pi hangs.
Holding ALT+PrintScreen and typing REISUB on keyboard does nothing, so I suspect kernel panic.
I disabled wifi with

Code: Select all

dtoverlay=pi3-disable-wifi
in config.txt to make sure it won't interfere.
Any ideas what might be wrong?
Using Pi as a full-time desktop PC since January 2019

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thagrol
Posts: 2978
Joined: Fri Jan 13, 2012 4:41 pm
Location: Darkest Somerset, UK
Contact: Website

Re: External SD card over SDIO interface

Wed Jul 03, 2019 5:14 pm

K4ktus wrote:
Wed Jul 03, 2019 4:10 pm
Any ideas what might be wrong?
Using a tutorial from December 10, 2016? That's two and a half years, several updates and at least one OS version upgrade out of date.

I don't have a link to a more recent tutorial so best hit your favourite search engine.
Attempts to contact me outside of these forums will be ignored unless signed in triplicate, sent in, sent back, queried, lost, found, subjected to public enquiry, lost again, and finally buried in soft peat for three months and recycled as firelighters

K4ktus
Posts: 20
Joined: Sun Jun 30, 2019 5:22 pm

Re: External SD card over SDIO interface

Wed Jul 03, 2019 5:38 pm

I already did that and didn't find anything recent covering that. This is why I post it here, where people such as Pi engineers can tell me if it even has any chance to work.
Using Pi as a full-time desktop PC since January 2019

User avatar
thagrol
Posts: 2978
Joined: Fri Jan 13, 2012 4:41 pm
Location: Darkest Somerset, UK
Contact: Website

Re: External SD card over SDIO interface

Wed Jul 03, 2019 5:50 pm

My apologies but it would have been useful if you'd mentioned that ;)
Attempts to contact me outside of these forums will be ignored unless signed in triplicate, sent in, sent back, queried, lost, found, subjected to public enquiry, lost again, and finally buried in soft peat for three months and recycled as firelighters

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