Way to read from USB port with Rev?

rgould8 at aol.com rgould8 at aol.com
Tue Jan 2 13:07:01 EST 2007


 This is great advice - - - say, can you tell me which barcode reader you've tried this with? 
    
 -----Original Message-----
 From: palcibiades-first at yahoo.co.uk
 To: use-revolution at lists.runrev.com
 Sent: Tue, 2 Jan 2007 3:07 AM
 Subject: Re: Way to read from USB port with Rev?
 
  

rgould8 at aol.com wrote:  Can anyone tell me if it's possible to write a 
Revolution app that pulls in data from the USB port? For instance, if I wanted 
to write an app that could read the barcode info from a USB-based barcode 
scanner, could I do that with Revolution? (like the "Intelliscanner" from 
http://www.intelliscanner.com/) I've written apps to read from the COM port 
before, but I've not tried a USB-port app.
 
The way to do this might be to use a bar code reader that looks to the computer 
like a keyboard.  It will not matter if it is USB.  Standard ones using the AT 
connector often go on a Y type connector, so that either the keyboard or the 
reader can enter data.

If you do this, it doesn't matter what the application is or even what the OS 
is.  You do not need any drivers (other than OS support for USB keyboards).   
You just need the cursor in the correct field, and then any triggers of the 
reader will put the read code, followed by ENTER, into it, and you handle it as 
needed.

I have not tried this yet in Revolution, but have verified that a Y connected 
reader which emulates a keyboard will supply data to a spreadsheet in both 
Windows or Linux, and to any of several word processors, so am sure that if the 
cursor is in an editable Rev field, the data will arrive. 

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