Hi, You could try bitbanging any availiable peripheral(i.e gpio) from each system at the callbacks and have a logic analyzer measuring and reporting time delay. Best regards, Aris On Fri, May 18, 2018 at 3:37 PM, Muni Sekhar <munisekharrms@gmail.com> wrote:
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Hi All,
I am trying to characterize the audio synchronization between two systems. There is a mechanism to route audio between two systems, we run ‘aplay’ at one system and ‘arecord’ in other system.
We need to measure the time difference when audio sample is out at one port and arriving at another port in different system.
I plan to add printk’s in “struct snd_pcm_ops” call backs, but does these call backs tells when it received first and last audio frames\samples?
Or else please suggest any other best method.
-- Thanks, Sekhar
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