Search found 3 matches

by alasdairc
Mon Nov 17, 2014 8:48 pm
Forum: V-USB
Topic: Enabling interrupt causes device enumeration problem
Replies: 3
Views: 5926

Re: Enabling interrupt causes device enumeration problem

Hey there,

Thanks for the advice, this has completely solved the problem!

I've been struggling with this little circuit for a long time now, and can finally relax and just make use of it.

:D
by alasdairc
Mon Nov 17, 2014 2:01 am
Forum: V-USB
Topic: Enabling interrupt causes device enumeration problem
Replies: 3
Views: 5926

Re: Enabling interrupt causes device enumeration problem

ATTINY84 is running at 12MHz with an external crystal.

I have 10uF electrolytic and 100nF ceramic cap between 5V and GND.

This device works perfectly with another host computer.
by alasdairc
Mon Nov 17, 2014 1:59 am
Forum: V-USB
Topic: Enabling interrupt causes device enumeration problem
Replies: 3
Views: 5926

Enabling interrupt causes device enumeration problem

I have a circuit based around an ATTINY84 and the V-USB stack which works perfectly on one computer but not another. I have tracked the problem down to this function call and the ISR which it starts: void enableIRIn() { // setup pulse clock timer interrupt //Prescale /8 (16M/8 = 0.5 microseconds per...