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USB FS Isochronus transfer starts @ even or odd frame?

Question asked by horrordash on Oct 8, 2013
Latest reply on Oct 13, 2013 by horrordash
Hi!

how do I findthe number of the first isochronous frame-odd or even?
tracing shows, the host can start transmitting with both even and odd frames unpredictable.
however, the frame number must be programmed in STM32 control register prior to receiving.
in the case of guessing the number of the first frame all goes well, otherwise the first frame is dropped and synchronization will be lost :(

can anybody help me with this stupid problem?
Thank you.

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