Re: [pyusb-users] bulkWrite of character sequence

[Wander L. C. <wan...@gm...>]

2012/3/29 Tormod Volden <lis...@gm...>:
> On Thu, Mar 29, 2012 at 12:32 PM, Wander Lairson Costa wrote:
>> Yes, this is a known problem that was already reported before. PyUSB
>> 0.4 was very flexible in managing the buffer types, and PyUSB 1.0 is
>> not that so. I could not find yet a simple and elegant solution for
>> this problem, but try to mimic to behavior of the C version of PyUSB.
>
> Thanks. I could not find it in the bug tracker, but I found a post
> from Sarah Messer seeing the same problem here:
> http://sourceforge.net/mailarchive/message.php?msg_id=27131804
>

There it is.

> Maybe we should just try return array.array('c', data) before or after
> trying array.array('u', data)?
>

This maybe a workaround for this specific case, but I mimic the
behavior of the C version, things get more complicated. Anyway, if you
provide a patch, I will accept, it is better than nothing.

> BTW, how is the use of unicode strings meant to work? Each string
> character LSB is sent to the device?
>

I don't remember for sure right now, but I think all bytes are sent as
a linear buffer...

-- 
Best Regards,
Wander Lairson Costa