USB FS Isochronus transfer starts @ even or odd frame?

[dash-spam]

Posted on October 08, 2013 at 00:24

Hi!

how do I find

the 

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.

[dash-spam]

Posted on October 13, 2013 at 15:19

I think I asked wrong question 🙂

I am wondering

whether it is possible

to setup

the STM32's OTG controller to receive

any type of

frame?