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Brightscript handling keyboard sequences

Dan Sloane

November 16, 2017 16:59

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Hi - I'm trying to trigger videos using an HID-emulating RFID reader connected to a LS423. 

In BrightAuthor, I can use USB events to trigger based on receiving a string of characters, eg 8045e79ca714d81<cr>.

For various reasons I want to do the same in Brightscript and not use BrightAuthor.  I've tried using a SequenceMatcher, per the examples in the manual, but I can't attach that to a roKeyboard object.

Line / Code:

59: if not kb.SetMatcher(matcher)
60:   stop
61: end if

Error log:

[ 36.027] Script runtime error: Member function not found in BrightScript Component or interface. (runtime error &hf4) in SD:/autorun.brs(59)

Any clues? 

Thanks in advance.

Dan

 

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1 comment

• 0
  
  Dan Sloane November 17, 2017 10:25

  Sorted... for future reference, listen for keyboard presses until you get a delimeter (in my case a carriage return, ASCII 13) then output the string...

  My regex checks are probably unnecessary as the tags and tag reader only ever output base 16 characters.

   

  Function TagListener(messageHandler as Object) as String

  'Regex for hex only
  isHex = CreateObject("roRegex", "[a-fA-F0-9]+", "i")
  
  tagID = ""
  
  while true
  msg = wait(0,messageHandler)
  
  if type(msg) = "roKeyboardPress" then
     if isHex.IsMatch(chr(msg)) then
         tagID = tagID + chr(msg)
     else if msg=13 then
         file = TagHandler(tagID)   
         print "File: "; file
         return file
         tagID=""
     endif
  endif
  endwhile
  
  End Function