Need some help!!

silence00

Hey there. Fairly new to pbasic, but I need it for a project. I'm trying to make my counter increase 1 every time I press my pushbutton, but can't seem to get my head wrapped around the code. Can somebody lend me a fresh brain? Stamp bs2, pbasic 2.5

kwinn

How is the button connected to the microcontroller?

Genetix

silence00,

Look at page 79 of "What's a Microcontroller?".
https://www.parallax.com/sites/default/files/downloads/28123-Whats-a-Micro-v3.0.pdf

Tracy Allen

' suppose button is on p0, with pullup resistor to Vdd
' state machine logic, can be part of a loop executing other tasks.
oldstate VAR bit
newstate VAR bit
activestate VAR bit

oldstate = in0    ' initialize state
DO
   newstate = in0
   activestate = newstate ^ oldstate & newstate ' active when button is released to high level
   oldstate = newstate
   IF activestate THEN DEBUG "buttonup",CR
   ' do other tasks
LOOP

There are many ways to scan buttons depending on the goal. There is also the PBASIC BUTTON command, but that is total overkill unless you want the repeat function.

A reference:
http://emesystems.com/OLDSITE/BS2fsm.htm#counter