|Subject:||Re: [avr-gcc-list] Problem with handling interrupts|
|Date:||Tue, 14 Jan 2014 15:08:45 +0100|
my problem is the following:
suppose we have 8 keys all connected to the same port (for. eg. D) of an AVR processor (eg. ATmega324) and that all pins have the interrupt enabled.
If I understand correctly, when I press any key is called the same ISR (PCINT3_vect) and a single flag is set (PCIE3).
Question: How do I know which button was actually pressed?
thank you very much
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