USB Audio 2.0 v6.1.1 on Mac

Sub forums for various specialist XMOS applications. e.g. USB audio, motor control and robotics.
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ChrisW
Member
Posts: 11
Joined: Tue Apr 22, 2014 11:36 am

USB Audio 2.0 v6.1.1 on Mac

Post by ChrisW »

We have an existing design based on the XMOS USB Audio 2.0 Dev Kit and currently running a slightly modified version of v3.2 of the reference app. I'm currently trying to update our software to the v6.1.1 codebase.

The new code seems to behave normally when connected to a Windows PC but I'm seeing USB enumeration problems when testing with a Mac Mini. When plugged in the board will either:

(a) Completely fail to enumerate - does not appear in System Profiler
(b) Appears on the USB bus but is not available to select as an output device
(c) Drops back to USB Audio Class 1 mode
or (d) Works normally (rarely)

To rule out a problem with our customised hardware and software, I tried using the precompiled binary on the Dev Kit board and saw the same problem. Could I be doing something wrong or is this a known bug?


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Ross
XCore Expert
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Joined: Thu Dec 10, 2009 9:20 pm
Location: Bristol, UK

Post by Ross »

Is there a reason why you are using 6.1.1 - 6.5.0 is the latest released version?

(Also, I don't see version 6.1.1 in the change log?)
ChrisW
Member
Posts: 11
Joined: Tue Apr 22, 2014 11:36 am

Post by ChrisW »

Sorry that should say v6.1.0.

I've now upgraded to 6.5 and this has solved the problem. I hadn't realised that 6.5 was suitable for the old dev boards, I thought it was just for the new MFA platform.
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