AVR-Chat

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Bent Morten Dale
Sent: Monday, November 21, 2005 3:38 PM
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] Mega88 pin change interrupt

Hi,

take a look at page 56 in ATmega88 datasheet. Watchdog timer interrupt vector No 7.

This is a good way of having a timer wake up at intervals up to 8sec.

Regards,

Morten

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of MuRaT KaRaDeNiZ
Sent: 21. november 2005 12:48
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] Mega88 pin change interrupt

Hello,

Atmel avr series do not have a special vector for handling watchdog
overflow, so it resets the system. Is it proper to get reset just to
wake-up from sleep? are you out of other timer resources?

Regards.

Murat Karadeniz
http://www.onlinefavbar.com/mukas

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
Behalf Of Bent Morten Dale
Sent: Monday, November 21, 2005 1:00 AM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] Mega88 pin change interrupt


Hi,
Pin change interrup works the first time I enable it but the next
interrupt is not serviced. If i get a watchdog interrupt (used as timer)
and then a pinchange interrupt then the interrupt is serviced. I use
both interrups to do a wakeup from sleep.


Regards,
Morten





Yahoo! Groups Links