On Friday 30 of March 2012, Jiri Kosina wrote: > On Thu, 22 Mar 2012, Arkadiusz Miśkiewicz wrote: > > Hi, > > > > I'm detecting usb keyboards from shell using this simple script: > > > > for i in /sys/class/input/input*; do > > > > [ ! -f $i/device/bInterfaceClass -o ! -f > > $i/device/bInterfaceProtocol ] && continue > > bInterfaceClass=$(cat $i/device/bInterfaceClass) > > bInterfaceProtocol=$(cat $i/device/bInterfaceProtocol) > > if [ "$bInterfaceClass" = "03" -a "$bInterfaceProtocol" > > = "01" ]; then > > > > module=$(readlink $i/device/driver/module) > > > > module=$(basename $module) > > > > echo "found keyboard driven by $module" > > > > fi > > > > done > > > > but for keyboards hidden behind logitech unifying receiver there seem to > > be no such information in /sys. > > > > Any ideas on how I can detect such keyboards via /sys or other > > scriptable method? > > > > (note that I'm interested only in "regular" keyboards, so single buttons > > and some other devices are not interesting) > > > > dmesg: > > > > [130816.672862] usb 6-2: new full-speed USB device number 4 using > > uhci_hcd [130816.856173] usb 6-2: New USB device found, idVendor=046d, > > idProduct=c52b [130816.856183] usb 6-2: New USB device strings: Mfr=1, > > Product=2, SerialNumber=0 [130816.856190] usb 6-2: Product: USB Receiver > > [130816.856195] usb 6-2: Manufacturer: Logitech > > [130816.868751] logitech-djreceiver 0003:046D:C52B.000F: hiddev0,hidraw2: > > USB HID v1.11 Device [Logitech USB Receiver] on > > usb-0000:00:1d.0-2/input2 [130816.878201] input: Logitech Unifying > > Device. Wireless PID:4004 as > > /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.2/0003:046D:C52B.000F/in > > put/input14 [130816.878717] logitech-djdevice 0003:046D:C52B.0010: > > input,hidraw3: USB HID v1.11 Keyboard [Logitech Unifying Device. > > Wireless PID:4004] on usb-0000:00:1d.0-2:1 > > I suggest you inspect all available input devices using EVIOCGBIT ioctl() > instead, querying the device capabilities (and looking namely on the > EV_KEY capabilities). > > Alternatively, you can find this information prepared for you in > /proc/bus/input/devices. > > If you really want to restrict yourself to USB keyboards, you'll have to > inspect 'Phys' as well. This you can do via EVIOCGPHYS ioctl() or look > into procfs as well. Ok, thanks. Seems there is no good way to find out regular keyboards only since many non keyboard devices have some keys. -- Arkadiusz Miśkiewicz PLD/Linux Team arekm / maven.pl http://ftp.pld-linux.org/ -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
