Re: [Discuss-gnuradio] E100 - No devices found for ----->

[Ralf Wierse]

> -----Original Message-----
> From: Jason Abele [mailto:address@hidden 
> Sent: Thursday, June 23, 2011 5:29 PM
> To: Ralf Wierse
> Cc: address@hidden
> Subject: Re: [Discuss-gnuradio] E100 - No devices found for ----->
> 
> 
> On Thu, Jun 23, 2011 at 5:32 AM, Ralf Wierse 
> <address@hidden> wrote:
> >> -----Original Message-----
> >> From: Jason Abele [mailto:address@hidden
> >> Sent: Thursday, June 23, 2011 1:04 PM
> >> To: Ralf Wierse
> >> Cc: discuss-gnuradio Discussion Group
> >> Subject: Re: [Discuss-gnuradio] E100 - No devices found for ----->
> >>
> >>
> >> On Thu, Jun 23, 2011 at 3:16 AM, Ralf Wierse
> >> <address@hidden> wrote:
> >> > OK, first simple reason discovered.
> >> > UHD can only be used for one device - either UHD_usrp_sink
> >> or source.
> >> >
> >> > How can UHD be used for both devices in parallel?
> >>
> >> You have to access both source and sink from the same process, but
> >> then it is possible to use both at the same time.
> >>
> >> Jason
> >
> >
> > Hi Jason,
> > thanks but I am a little confused.
> > I would say it is in the same process since I have sink and 
> source in the same
> > GRC setup. The failure shows up when the generated python 
> script instantiates an
> > UHD devices the second time as far as I understand.
> > Is there any combined UHD_usrp_sink/source block for GRC or 
> how is this to
> > be done practically?
> 
> Can you send the simplest .grc file which causes this issue?
> 
> Jason


Hi Jason,

Josh wrote to use the latest branch. This one is still building since
we don't have any cross compile environment yet...

However, attached is a GRC setup which fails due to parallel use
of two UHD devices. Well, this is very simple.

Hope the parallel issue is fixed using the latest branch. If not, we
appreciate more support.

Regards,
Ralf

parallel.py
Description: Binary data

parallel.grc
Description: Binary data

gnuRadioPrintOut.txt
Description: Text document