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Posted: Fri Jul 25, 2014 5:43 pm
by psc
Can anyone confirm that this "new" ATTINY is supported by VUSB:

Thanks for your time!


Posted: Fri Jul 25, 2014 6:55 pm
by psc
What I'm worried about is that XTAL2 is the same pins as INT0.
Will also use SPI, then on what pins I should connect D+ / D-?

From a post on avr freaks:
Rather than enabling pullups by setting bits in the PORTx register, the tiny841 has a separate PUEx register.

Any hints?


Posted: Sat Jul 26, 2014 1:14 am
by blargg
You can use a pin change interrupt for V-USB.

Pullups shouldn't matter since I'm pretty sure that V-USB doesn't ever need them. That is, it either runs the USB pins as outputs or non-pulled-up inputs.