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PIN CHANGE INTERRUPT on ATmega16 for a change of any PORTx p

 
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Jan_Huygh

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PostPosted: Mon Nov 21, 2011 3:27 pm    Post subject: PIN CHANGE INTERRUPT on ATmega16 for a change of any PORTx p Reply with quote
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After looking in the parametric table I figured out that the solution is to use the ATmega164A... it does support pin change interrupt on any port and it is pin compatible with the ATmega16.


I've been scanning trought the ATmega16 data sheet but could not find a way to trigger an interrupt when any pin on PORTB or PORTD changes.
Probably this means it can not be done... but before I start writing this as a polling routine I tought it was wise to ask here if I overlooked it.
So can I trigger an interrrupt when any pin on PORTB or PORTD changes on an ATmega16?

Jan Huygh
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MAK3

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Joined: 24 Sep 2010
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PostPosted: Mon Nov 21, 2011 8:11 pm    Post subject: Reply with quote
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I've been scanning trought the ATmega16 data sheet but could not find a way to trigger an interrupt when any pin on PORTB or PORTD changes.


You can do this with INT0....INT2 but not with any pin.
You can check all other Pin's in the main Loop.

(ATXMEGA can do it on any pin, but even here you need to check which pin fires the interrupt)

MAK3
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