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

[Ward, Marcus D.]

And the firmware in the device matches the UHD you have? Based on my structure, 
the firmware should be matching (since when I did the flow graph with the UDP, 
everything went fine except for data loss) and correct me if I'm wrong, but an 
error would come on saying that the firmware is not compatible?

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...

I'll dig into it more to see what else I can come up with.

Thank You,
Marcus

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Marcus D. Leech
Sent: Tuesday, July 15, 2014 2:08 PM
To: address@hidden
Subject: Re: [Discuss-gnuradio] Why am I dropping data over the UDP network?

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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