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Top Forums Programming Read 1 of 2 keyboards connected Post 302981850 by wisecracker on Tuesday 20th of September 2016 12:33:14 PM
Old 09-20-2016
NO! The barcode scanner, as RudiC quoted, "acts LIKE a keyboard". It has a limited ASCII set and uses the KB event, BUT, have you found out whether it has a separate device in the '/dev/' drawer?

Not sure how you are able to read '/dev/input' as this is a directory on Ubuntu 16.04 64 bit
OS. You must be reading the 'event' which is 'event6' on said OS.

With the barcode scanner NOT plugged in do:-
ls /dev > devlist1.txt
Then plug the barcode scanner in, wait a few seconds and do:-
ls /dev > devlist2.txt
Then find the difference between the two...

If so, you could try the 'xinput' command as xinput list keyboard or something similar, assuming the binaries are in the $PATH and disable the barcode scanner and see if that still produces an output at the event handler. If not see if it can be read from its separate driver that you would have found from above. I am sure it is capable of having a separate driver for other possible uses -- BUT -- I have NOT got one so my help IS limited.

If successful you WILL still need to understand the protocol that comes from the barcode scanner, which sould closely follow a subset of that of the keyboard...

Last edited by wisecracker; 09-20-2016 at 01:45 PM.. Reason: Typos.
 

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SETUPCON(1)						    Console-setup User's Manual 					       SETUPCON(1)

NAME
setupcon - sets up the font and the keyboard on the console SYNOPSIS
setupcon [OPTION]... [VARIANT] DESCRIPTION
setupcon is a program for fast and easy setup of the font and the keyboard on the console. Most of the time you invoke setupcon without arguments. The keyboard configuration is specified in ~/.keyboard or /etc/default/keyboard. The font configuration is specified in ~/.console-setup or /etc/default/console-setup. Consult keyboard(5) and console-setup(5) for instructions how to configure these two files. If you have to switch often between different encodings, keyboards or languages, you can prepare several alternative configuration files for setupcon. Suppose that most of the time you will use Greek language with Greek keyboard layout, but sometimes you need to type in Ger- man with German keyboard layout. In this situation you should customize the main configuration files (keyboard and console-setup) for Greek. Create also alternative configuration files for German named keyboard.german and console-setup.german. Then in order to configure the console for Greek you will simply run the command with no arguments: setupcon and in order to configure the console for German you will use setupcon german. OPTIONS
-v, --verbose Be more verbose. Use this option if something goes wrong or while experimenting with the configuration files. -k, --keyboard-only Setup the keyboard only, do not setup the font. -f, --font-only Setup the font only, do not setup the keyboard. --force Do not check whether we are on the console. Notice that you can be forced to hard-reboot your computer if you run setupcon with this option and the screen is controlled by a X server. --save This option can be useful if you want to use setupcon early in the boot process while /usr is not yet mounted and the required data are not available. This option will make setupcon copy the required files in /etc/console-setup/ in order to make them available before /usr is mounted. If you use setupcon early in the boot process, then you should run it with this option after every change of the console configuration. --save-only The same as --save, but does not setup the keyboard and the font. This option can be useful if you want to save the required files while the screen is controlled by a X server. -h, --help Display usage information. VARIANT Specifies which configuration file to use. By default the configuration files of setupcon are named console-setup and keyboard but if you use e.g. chukchi as VARIANT then the configuration files will be console-setup.chukchi and keyboard.chukchi. In this way you can have easy access to several different configurations - for example one for the Chukchi language and another for the default configuration. FILES
~/.console-setup ~/.keyboard /etc/default/console-setup /etc/default/keyboard /etc/default/console-setup.VARIANT /etc/default/keyboard.VARIANT /etc/console-setup/ SEE ALSO
keyboard(5), console-setup(5) console-setup 2011-03-17 SETUPCON(1)
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