Am Donnerstag, 14. Oktober 2010, 13:15:45 schrieb Alex:
Great to hear that ASYNC OUT with rate feedback is working for u now :-)
Btw, are u using 12.13 format for Linux ? U can try with OSX snow leopard, which can understand 10.14 and 16.16. Apply Clemens' patch and linux can understand all formats - but users will have to wait for kernel 2.6.37 !
I have implemented a sophisticated rate feedback with ping pong audio buffer, calculation of gap between USB data and i2s data, determining whether gap is increasing or decreasing etc.
One more question on the feedback: In your project you fo 10.14 for Full Speed devices (which mine is - the AT91SAM7A3 can't do High Speed) and 12.13 for highspeed. Why do you distinguish that way? Is your device initialised in High Speed mode whenever it's connected to a Linux host?
Regards, Julian