Re: [Discuss-gnuradio] Why am I dropping data over the UDP network?

[Marcus D. Leech]

On 07/15/2014 01:57 PM, Ward, Marcus D. wrote:
> On the machine that has the USRP connected  (presumable this is a N2xx or 
> USRP2?), what does:
>
> ping 192.168.10.2
>
> return?
>
> Ping 192.168.10.2 is returning data
>
> what does uhd_usrp_probe --args "addr=192.168.10.2"
>
> Return?
>
>   This returns an error message:
> RuntimeError: LookupError: KeyError: No devices found for -------->
> > Device Address:
> >         Addr: (192.168.10.2)
And the firmware in the device matches the UHD you have?

Assuming that there's nothing *else* on the network connection between 
the host computer and the USRP device, that's the only thing I can think
  of that might cause it to be pingable, but UHD can't communicate with 
it, unless you have firewall rules preventing communications at the
  UHD layer...


> -----Original Message-----
> From: address@hidden [mailto:address@hidden On Behalf Of Marcus D. Leech
> Sent: Tuesday, July 15, 2014 1:35 PM
> To: address@hidden
> Subject: Re: [Discuss-gnuradio] Why am I dropping data over the UDP network?
>
> On 07/15/2014 01:21 PM, Ward, Marcus D. wrote:
> > Ok so now I went to try out my architecture this time with a TCP source and 
> > sink. I have pictures included where the sending side is (TCPrecievestation) 
> > and the receiving side is (TCPreceivedisplaystation).
> >
> > On the (TCPreceievestation), the last three lines in the bottom window is as 
> > follows:
> > RuntimeError: LookupError: KeyError: No devices found for -------->
> > Device Address:
> >         Addr: (My USRP's IP address)
> >
> >
> > On the (TCPreceievedisplaystation), all I am getting is this:
> > using volk machine: avx_64_mmx_orc
> >
> > To add, I have scopes for both the sending and receiving end, but as I run 
> > them, the plots do not show.
> >
> > Is there something that I could be missing since I am dealing with TCP and not 
> > UDP?
> One thing I noticed immediately is that you have the sample rate set to 32k, 
> which is not a valid sample rate for ANY USRP hardware.
>
> On the machine that has the USRP connected  (presumable this is a N2xx or 
> USRP2?), what does:
>
> ping 192.168.10.2
>
> return?
>
> what does uhd_usrp_probe --args "addr=192.168.10.2"
>
> Return?
>
>
>
>
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