Hi,

On Sat, Feb 07, 2015 at 08:11:08AM +0100, Norbert Danneberg wrote:
> sr: uni-t-dmm: Failed to claim interface 0: LIBUSB_ERROR_ACCESS.

That's a Mac OS X specific issue that we haven't got a solution for yet,
I'm afraid (I can reproduce this with another UNI-T DMM on Mac OS X, btw).

I filed a bug: http://sigrok.org/bugzilla/show_bug.cgi?id=555

Basically we'll either need some Mac OS X specific HID code in libsigrok
and/or use HIDAPI, I think. The issue may also affect certain non-HID
device (USB CDC) as far as I've read (untested though); if that's the
case I'm not sure how to handle those cases really.


In the mean time I guess the only workaround for Mac OS X is to use the
RS232-based cable for UNI-T DMMs (instead of the USB HID based ones).


Cheers, Uwe.
-- 
http://hermann-uwe.de | http://randomprojects.org | http://sigrok.org

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