interrupt problem

hast66 · Joined: 18 Aug 2005 Posts: 28

Hi

On PIND.3 of a 90S2313 I connect a pushbutton and I use this as an interrupt
Every time I push short the prg should wait 1500sec. When I push longer(>1sec) it should go to the ISR "RESETTEN"

Duval JP · Joined: 22 Jun 2004 Posts: 1198 Location: France

hello,
for a keyboard, I carried out a similar program without used interruption.

the idea was as follows: in the main loop I question the keyboard perpetually.
if I do not have an answer I return to the loop
if I have an answer corresponding to the pushed key, I makes leave another loop where I control the time where the key is pushed with
waitms and exit do
You can make the same thing by controlling the reserved pin
bon courage
JP

naicheben · Joined: 18 Nov 2004 Posts: 47 Location: Leck

how about:

Config Portd = Input

Reset Portd

Config Int0 = Falling
Config Int1 = Rising
Enable Interrupts
Enable Int0
Enable Int1
On Int0 Resetten , Nosave
On Int1 Uitstel , Nosave

'main program

Do
‘something with some wait instructions in between
Loop

'ISR 1 rising uitstel
Uitstel:
waitms 1500 'since 1500sec= 25 min ... you didn't wait, did you?
If Pind.3 = 0 Then 'so if its still pressed ... reset
Goto Resetten
End If
'Do what so ever ....
Return

'ISR 0 falling resetten
Resetten:
jmp 0 ' soft reset
Return

End 'end program

hast66 · Joined: 18 Aug 2005 Posts: 28

I found the solution.
Due to contactvibrations(I don't know the right word), the flags in the GIFR ar set unintentionelly, so you get another interrupt as soon as you enable interrupts again.
A way to prefent this :

hast66 · Joined: 18 Aug 2005 Posts: 28

oh yes Naicheben

It was the intention to interrupt the wait 25minutes with a longer push on the button or to re-begin the 25minutes loop with a shorter push.

I make this small project to automatically close my garage after 5 minutes with some postpone options.

thanks anyway