pushbutton as a slector switch

samsn4

in a round about way, would this work?

pb - pushbutton input

pb := 0

case pb
1:
if pb == 0
pb := 1
elseif pb == 1
pb := 2
elseif pb == 2
pb := 0

i'm using a keypad and want to cycle through three different modes with one button

Thanks

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Daniel Mueth
WSIU-TV Master Control

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

"Just plug it in and let's see what happens"

Mike Green

How about (with the 1st part the initialization and the 2nd part executed periodically):

oldValue := 0
pb := 0
...
newValue := ina[noparse][[/noparse]button]
if oldValue == 0 and newValue == 1
   pb := (pb + 1) // 3
oldValue := newValue

Post Edited (Mike Green) : 12/11/2007 3:22:52 PM GMT

bambino

In theory yes, but you are mixing a·case structure and if structure! use one or the other.

if ina[noparse][[/noparse]button] == 1   case pb
      0: pb := 1
      1: pb := 2
      2: pb := 0
'----------------------------

if ina[noparse][[/noparse]button] == 1
  if pb == 0
   pb := 1
  elseif pb == 1
   pb := 2
  else
   pb := 0

Don't forget to debounce your button some way, either by using a wait count or by waiting for the button to go active and resting before changing your value.

bambino

Dang Mike, we must have been typing at the same instant!
Sorry, I didn't think any one had answered.