After a lot of work, I’ve now got the USB Audio Out project into a working state. It’s not completely finished just yet — the mixer controls don’t work, preventing the volume or mute settings from being changed — but with the attachment of a speaker and capacitor to the USBKEY sound can be heard in all its 8-bit glory.
I’m actually quite excited about this demo - as far as I know, I’m the first to do with a USB AVR. Sure, Atmel’s got a Mic In project (which I need to make my own incarnation of next) but audio out is new and interesting.
I’d like to thank the fellow AVRFreaks members who’ve helped me thus far - both for the Mass Storage (especially Joerg, the veritable fountain of knowledge he is) and the Audio Out project. Especially in the latter case, I would have been at a loss as to how to correctly PWM the audio output in a recognizable form.
Also a big round of applause for James, also from AVRFreaks, whose been doing the Linux testing of all the MyUSB demos. He also found a small bug in the Mass Storage device demo, which means it now works under Linux. A big cat /dev/kudos to him!
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