Posted on October 03, 2013 at 00:36Hello everyone,
I'm currently working on a USB application on a STM32F407, using the Audio Class,
I
trying to run asynchronous mode
with the explicit
feedback through
feedback EP,
and after some long work and extensive reading USB specification and Audio Class specification of course, I am stuck.
I am using
STM OTG Driver v2.1
and
a modified example of
USB
audio.
I described the
end
point for
the explicit feedback
in the tag
and index
it in the
field
bmSync
in OUT
EP
, but he
can not wait to
EPIN
interrupt
for
this point
.
The device is
detected correctly
, I changed
the sample rate
and so on
, everything works
ok,
except for
the synchronization
...
How should
send
feedback data
synchronization
?
Would it be of any help if I tried the explicit feedback approach, which is needed for an async sink? Maybe
anyone has
sample code for
STM32F4
?
In any
case
, I would be
grateful
for any input on the subject
.
I can
provide some
of my code
if necessary.
I apologize
for my English
.
#audio-usb-asynchronous
