Go Back   MacRumors Forums > Apple Systems and Services > Programming > Mac Programming

Thread Tools Search this Thread Display Modes
Old Jan 6, 2013, 03:55 PM   #1
macrumors newbie
Join Date: Feb 2012
simulating keyboard input from usb rfid reader

I have a usb device which reads rfid tags. On my window pc I have a program which takes the code from a scanned chip and sends it as a 12 character string to whatever program has the keyboard focus. I need to accomplish the same result on a mac running OS X 10.8

I can read the input from the device from /dev/cu.SLAB_USBtoUART, and have written a command line objective-C program that massages the input to remove the extraneous info and sends the required 12 character code to stdout.

How to I get the system to treat the output from this program as keyboard input?

The end result that I want is for the scanned code to be entered into a form field in a web browser running on the mac with a return so that when an rfid chip is scanned, the web brewer submits a form with that chips code.
sgthree is offline   0 Reply With Quote
Old Jan 7, 2013, 01:57 PM   #2
macrumors regular
Join Date: Jul 2010
I think you're saying you just want to send the text you get from the reader as if it were typed text? If so, you can do this with AppleScript.

tell application "System Events" to keystroke "foobar"
You can easily issue AppleScript commands from the command line (or another application) using osascript:

osascript -e 'tell application "System Events" to keystroke "foobar"'
ytk is offline   0 Reply With Quote
Old Jan 7, 2013, 02:05 PM   #3
balamw's Avatar
Join Date: Aug 2005
Location: New England
I'm a bit surprised it doesn't just come up as a HID device instead of a serial port.

e.g. http://www.practicalarduino.com/proj...l-usb-keyboard

MBA (13" 1.7 GHz 128GB), UMBP (15" SD 2.8 GHz), UMB (13" 2.4 GHz), iMac (17" Yonah), 32GB iPad 3 WiFi+LTE, 64 GB iPad WiFi, 32 GB iPhone 5, Airport Extreme
balamw is offline   0 Reply With Quote

MacRumors Forums > Apple Systems and Services > Programming > Mac Programming

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Bluetooth keyboard input delay Nanasaki iPad Accessories 3 Feb 25, 2014 09:04 PM
HID Device RFID reader not working aleza84 Mac OS X 10.7 Lion 1 Jan 28, 2014 05:44 AM
Password input request, but no keyboard? Galatian iOS 7 3 Sep 13, 2013 09:21 AM
Input delays after connecting a USB device Sylon Mac Basics and Help 12 Feb 13, 2013 06:45 PM
"Potentially useful" Abbyy Fine Reader script. (does not replace input file) tiriya Mac Programming 0 Aug 9, 2012 08:19 AM

Forum Jump

All times are GMT -5. The time now is 09:33 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2015, MacRumors.com, LLC