Rajesh kumar <rkrajeshkumar87@...> writes: > > How can i read a barcode using a C program. > > I can able to read barcode manually in a gedit. i Need to create a c > program which reads the barcode device and write the data to a text file. > > How this can be done.
Input devices like keyboard, mice, etc. go through the input subsystem. And the USB barcode reader in this case seems to act like a keyboard, and hence also goes through the input subsystem. Each of these input devices has a device file named /dev/input/eventN. When the device file is read, key events are reported. See http://www.thelinuxdaily.com/2010/05/grab-raw-keyboard-input-from-event-device-node-devinputevent/ for an example. You will have to identify which /dev/input/eventN corresponds to your barcode reader. This can be obtained from sysfs. Alternatively, there are aliases to these device files, that make it more obvious. The aliases are present in /dev/input/by-id/ Regards, Vijay -- P: http://www.bravegnu.org/ C: http://www.zilogic.com/ _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
