Do - Loop ?

[1968neil]

Hi Folks,
I have a small issue that im trying to solve.........

I have a Push switch that increments a counter by 10 when its pressed once.

What i want to do is..........If it's held for say 3 seconds it resets the counter to Zero.
I'm racking my brains to think of a simple way of doing it.
Any ideas ? I have it working with a Do- Loop but its unreliable even with small pauses for de-bounce etc

Any input much appreciated
Regards
Neil

 

[oracacle]

I would suggest using one of timers.
There tuner Kroger increasing while the button is pressed and resets when let go.

A code snippet I wrote a while back maybe of help

Pulse output and debouce without using pause on X2

After recent posts in another thread, I got to thinking that after jumping through a few extra hoops, using a timer to allow for a sudo multi tasking situation could be achieved. It a little more granular than I am used to. Using the settimer instead of timer3 should be possible but i haven't...

picaxeforum.co.uk

Unfortunately I won't have much time until say least the weekend to look at our in more details

 

[erco]

Tested, try this:

#picaxe 14m2
#no_data

' momentary switch connects pin b.2 to ground
' attach a 0.1-1 uF capacitor across switch for debounce
' pinb.2=1 unless button pressed, when it is 0

pullup 4 ' enable pullup resistor on pin b.2

'w1 = accumulator value
'b1 = loop counter for reset
do
b1=0 ' reset loop counter
if pinb.2=0 then gosub press
loop

press: 
w1=w1+10 ' increment accumulator by 10 each keypress
sertxd (#w1,13,10)

for b1=1 to 255   ' increment loop counter
pause 8  '   adjust reset length ~3 seconds
if pinb.2=1 then release
next

w1=0: sertxd ("RESET",13,10)
release:if pinb.2=0 then release  ' wait for button release after reset
return

 

[erco]

Uploading a video slowly over a sketchy wifi connection.

 

[inglewoodpete]

Key-press lenght discrimination can be done as either a foreground or background task. Foreground coding is the best solution for M2 PICAXEs, while (I think) using a timer regular interrupt like 50, 80 or 100mS is simpler for X2s. You don't mention which chip series you are using.

 

[1968neil]

Hi guys,
Thanks for the info.
Erco’s solution works brilliantly in my 14M2 application. Thankyou
I can see this being used in future projects also, a very clever implementation, the video made it crystal clear.
Thanks for the help, much appreciated