Great Library, A Write up and Question

Duane B

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Mar 31, 2012, 12:24:11 PM3/31/12

to arduino-pinchangeint-discuss

Hi,
PinChangeInt is a great library, I have a post on it here -
http://rcarduino.blogspot.com/2012/03/need-more-interrupts-to-read-more.html

I am trying to get it onto an old ATMega8 at the moment, but
everything is pointing towards pin change interrupts not being
available on this hardware, only the later 168 and 328's, I am basing
this on reading through the AVR Header files which do no define any of
the control registers for the 8.

Still a great library and not a problem for anyone that isn't
buying outdated, old stock ATMega8's

Duane B

Michael Schwager

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Apr 1, 2012, 8:15:57 PM4/1/12

to arduino-pincha...@googlegroups.com, duane...@virgin.net

Thanks, Duane. Nice article, by the way.

You're right... the ATMega8 does not have Pin Change Interrupts. The ATMega88 does, however, and Atmel provides a nice overview here: http://www.atmel.com/Images/doc2553.pdf . That one is pin compatible with the ATMega8.

--
-Mike Schwager

Duane B

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Apr 2, 2012, 6:20:14 AM4/2/12

to arduino-pinchangeint-discuss

Hi,
Thanks for the confirmation on the Atmega8 and dropping by my site.
I bought the Atmega8's as old stock and was hoping to use them in an
RC Car project with 7 interrupts. I will get some more 328's for this
and keep the 8's for another day.

Thanks
Duane.

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