i.MX ProcessorsのトピックRe: USB connection error on MCIMX6Q-SDB Linux

USB connection error on MCIMX6Q-SDB Linux

YoshihisaSaitou — Fri, 21 Oct 2016 09:14:09 GMT

Hi,

I'm using a MCIMX6Q-SDB board with linux.

When a USB device was connected, the following errors had occurred.

What does this error code mean?　(Error-71,Error -18)

Example of error messages

- IsoErr: index (6) frame (0) len (137) Error (-71) -

- IsoErr: index (8) frame (0) len (0) Error (-18) -

Thanks.

Re: USB connection error on MCIMX6Q-SDB Linux

igorpadykov — Fri, 21 Oct 2016 23:29:56 GMT

Hi Yoshihisa

seems these errors are linux errors described in errno.h,
linux/Documentation/usb/error-codes.txt. One can try to debug

it in drivers/usb using AN4553 Using Open Source Debugging Tools

for Linux on i.MX Processors

http://cache.nxp.com/files/32bit/doc/app_note/AN4553.pdf

Best regards
igor
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Re: USB connection error on MCIMX6Q-SDB Linux

YoshihisaSaitou — Tue, 25 Oct 2016 10:55:28 GMT

Hi igor-san,

Thank you for your quick reply.
I will check to see its contents.

Best regards,
Yoshihisa.