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

[Ralf Wierse]

> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden 
> On Behalf Of Josh Blum
> Sent: Thursday, June 23, 2011 5:35 PM
> To: address@hidden
> Subject: Re: [Discuss-gnuradio] E100 - No devices found for ----->
> 
> 
> 
> 
> On 06/23/2011 03:16 AM, Ralf Wierse 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?
> > 
> 
> Sorry, Its a known bug related to opening twice. Its fixed on the next
> branch. Solution w/ instructions:
> http://comments.gmane.org/gmane.comp.hardware.usrp.e100/754
> 
> -Josh



Hi Josh,

we don't manage wih the E100 FPGA5 bitstream.
It is placed in the images directory and we use a new branch but we 
don't really think the FPGA5 is used.
And we still have the same problem with parallel UHD devices (sink/source).

Which branch shall we use? Can you pinpoint exactly?
Shall we use the Josh branch from http://gnuradio.org/cgit ?

Do you have images available? We still don't have a cross-compile env. yet.
Hence compilation takes very long time...

Another topic we recognized on E100 is that we suspect incomplete datastreams
when the Gumstix is overloaded performancewise. I will come back with details
on our transmitter setup which might cause overloads.
But - is it possible to overload the 720MHz Gumstix easily? What happens in
this case - samples are discarded?

Regards,
Ralf