Hi,
After digging a little bit around this i found that my problem is with
this function:
dev = udev_device
*udev_device_get_parent_with_subsystem_devtype(dev,"usb","usb_device");
dev is always null. He can't find me the usb device for my input device.
Maybe i'm not specifiying subsystem and dev type correctly.
If I make several calls to udev_device_get_parent I can get to the
correct device.
Does anyone knows what should be the correct subsystem and dev type pair
to find the parent usb device for an input device?
Thanks,
Nuno
On 11/16/2011 12:02 PM, Nuno Santos wrote:
Hi,
I found an example on how to use libudev to iterate over devices
present in the system to find its precise path since the path can be
different everytime we plug a device into the system.
http://www.signal11.us/oss/udev/
In this example, the type of device searched is hidraw, however I have
already tried input, event, etc and none of this match criterias in
the following function:
|*udev_enumerate_add_match_subsystem*(enumerate,*"hidraw"*);|
Only hidraw seems to work.
Can I use this technic to found the path a of input event device?
Thanks,
With my best regards,
Nuno
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