I/O Error

[chump-online]

i always get an IO error:
root@raspberrypi:/home/pr# ./readKeyd /dev/input/event0
(null):0 - file I/O error

device is functional, tested with evtest

can anyone help?

[nemiah]

Hi,

the first thing I would check: does /dev/input/event0 exist?

[chump-online]

Hi, yeah but as written i tested the device with evtest /dev/input/event0
and that works fine.

i have no idea why i always get that I/O error

thanks for your help!

2014/1/21 nemiah notifications@github.com

Hi,

the first thing I would check: does /dev/input/event0 exist?

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/1#issuecomment-32971319
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Mit freundlichen Grüßen
Philipp Raczek

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[nemiah]

Hi, maybe it's a permissions thing.
have you tried running it as root?

[chump-online]

yes, as root. Thats the point, i have no idea why it does bring the IO
error....

[nemiah]

In that case I'm sorry, but I'm out of ideas, too.
You could try to find which line of code produces the problem.
It should be around line 135: ioctl(fd, EVIOCGRAB, 1);