Address and Channel???

DerekHoffman

Can somebody give me a quick overview of the differences between Addresses and Channels and how they relate to feedback to and from a master? The help documentation in TPD4 seems woefully inadequate for newbies and doesn't give a good explanation. I'd settle for a URL to some good documentation on the subject if you know of any.

Thanks for the help,
Derek.

ericmedley

A probably over simplified answer is that Channels are what are used to denote which button got pushed, released (and by inferrence, held)

BUTTON_EVENT[tp_1,1]
{
PUSH:
  {
  // some one pushed button 1, do someting.
  someone_did_something=1
  }
}

Channels are also used for feedback.

DEFINE_PROGRAM

IF(someone_did_something=1)
  {
  ON[dv_tp,1] // TURN ON THE FEEDBACK OF BUTTON 1
  someone_did_something=0 // reset the var
  }

NOTE: turning a touch panel button channel on does not equal pushing it.


The Address portion is typcially used for variable text.

So,

IF(someone_did_something=1)
  {
  ON[dv_tp,1] // TURN ON THE FEEDBACK OF BUTTON 1
  SEND_COMMAND dv_tp,'TEXT1-HEY! Stop pushing this button!"
  someone_did_something=0 // reset the var
  }

Note: The Address number doesn't have to be the same as the channel number. It could be button Channel 1 and Address 101. If that were the case the above example would look like..

IF(someone_did_something=1)
  {
  ON[dv_tp,1] // TURN ON THE FEEDBACK OF BUTTON 1
  SEND_COMMAND dv_tp,'TEXT101-HEY! Stop pushing this button!"
  someone_did_something=0 // reset the var
  }

Sorry to use old programming methods, but sometimes it's the easiest way to explain it...