Ran out of external interrupts pins

Using Arduino Microcontrollers
#1

Hi,

I have a Leonardo board with an official Arduino relay shield that i'm trying to put to sleep. Problem is that I don't have any pins available for EXT INT.

i2c is in use (INT0,1) , UART also (INT2,INT3) and INT4 (pin D7 used by relay shield).

Is there any other way to wake up the 32u4 using non INT pins ?

Thanks,
Laurent

#2

There are 8 pin change interrupts.

#3

jremington:
There are 8 pin change interrupts.

Thanks!

I totally forgot that they were usable to trigger a return from sleep.

#4