Re: hidapi: does not retrieve serial number of device on macos x

[Alan O. <al...@si...>]

On 04/17/2013 09:27 AM, folkert wrote:
> I ported clewarecontrol to hidapi and all runs fine on linux.
> On macos x, though, it doesn't show the serial number. This is rather
> essential as it is needed to distinguish what device to control when you
> have multiple connected.
> The hidtest program included in hidapi doesn't show the serial either:

> The serial number ought to be 900705 (decimal) or DBE61 (hex).

It's worth noting that the serial number is a string descriptor,
containing a Unicode string, UTF-16 encoded. Sticking random bytes in it
may be causing the UTF-16 parser in the Apple kernel/libraries to bail
somewhere. That's my first guess since it seems to work for others.

Alan.