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From: | Ben Hilburn |
Subject: | Re: [Discuss-gnuradio] RuntimeError: b200: 2 RX 1 TX and 1 RX 2 TX configurations not possible |
Date: | Mon, 17 Nov 2014 14:47:04 -0800 |
On 11/17/2014 05:15 PM, Lefteris Kampianakis wrote:We shall probably need a more-detailed description of what you're doing. Like the actual .grc files, etc._______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradioUSRP_source_channel1 --> USRP_sink_channel1Hello,FYI I am having problems even with a simpler configuration like this:
USRP_source_channel2 --> USRP_sink_channel2
Does anyone face the same issue? It is really frustrating because 1/3 executions are wasted and this causes problems with later design, that has to have an execution rate of > 1Hz
Thank you in advance
Lefteris
On Fri, Nov 14, 2014 at 6:32 PM, Lefteris Kampianakis <address@hidden> wrote:
The problem I have is that I get the following message at random times and on average on 1/3 executions of the GRC script.USRP_source_channel1 --> WX_GUI_scope_channel1address@hidden --> USRP_sink_channel1Hello,I have a B210 and I am trying to transmit and receive from all it's channels simultaneously. My setup is a macmini late 2012 with Ubuntu 12.04 install. I compiled and installed gnuradio from source using the gnuradio build script. I have developed the attached very simple GRC script that looks like this
address@hidden --> USRP_sink_channel2
USRP_source_channel2 --> WX_GUI_scope_channel2
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.008.000-18-g864f84b5
Using Volk machine: avx_64_mmx_orc
-- Operating over USB 3.
-- Initialize CODEC control...
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Performing register loopback test... pass
-- Performing CODEC loopback test... pass
-- Performing CODEC loopback test... pass
-- Asking for clock rate 32.000000 MHz
-- Actually got clock rate 32.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Asking for clock rate 28.000000 MHz
-- Actually got clock rate 28.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Tune Request: 915.000000 MHz
-- The RF LO does not support the requested frequency:
-- Requested LO Frequency: 915.000000 MHz
-- RF LO Result: 914.999999 MHz
-- Attempted to use the DSP to reach the requested frequency:
-- Desired DSP Frequency: -0.000001 MHz
-- DSP Result: -0.000001 MHz
-- Successfully tuned to 915.000000 MHz
--
-- Tune Request: 915.000000 MHz
-- The RF LO does not support the requested frequency:
-- Requested LO Frequency: 915.000000 MHz
-- RF LO Result: 914.999999 MHz
-- Attempted to use the DSP to reach the requested frequency:
-- Desired DSP Frequency: -0.000001 MHz
-- DSP Result: -0.000001 MHz
-- Successfully tuned to 915.000000 MHz
--
-- Asking for clock rate 28.000000 MHz
-- Actually got clock rate 28.000000 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test... pass
-- Tune Request: 915.000000 MHz
-- The RF LO does not support the requested frequency:
-- Requested LO Frequency: 915.000000 MHz
-- RF LO Result: 914.999999 MHz
-- Attempted to use the DSP to reach the requested frequency:
-- Desired DSP Frequency: 0.000001 MHz
-- DSP Result: 0.000001 MHz
-- Successfully tuned to 915.000000 MHz
--
-- Tune Request: 915.000000 MHz
-- The RF LO does not support the requested frequency:
-- Requested LO Frequency: 915.000000 MHz
-- RF LO Result: 914.999999 MHz
-- Attempted to use the DSP to reach the requested frequency:
-- Desired DSP Frequency: 0.000001 MHz
-- DSP Result: 0.000001 MHz
-- Successfully tuned to 915.000000 MHz
--
thread[thread-per-block[2]: <block gr uhd usrp sink (24)>]: RuntimeError: b200: 2 RX 1 TX and 1 RX 2 TX configurations not possible
It is obvious that I have all channels activated and that this message shouldn't be appearing in the first place, let alone, appearing in a non-deterministic manner.
Any ideas?
Thank you in advance
Lefteris
--
Eleftherios(Lefteris) KampianakisElectronics and Computer EngineerPHD Candidate and Researcher at Sensing Computing Communications Group (SGCC)Department of Electrical EngineeringUniversity of Washington3927 Adams Lane, NE, Mercer Court D805B, 98105mail: address@hidden
From your description, I think you're wanting to:
bring up flow-graph, exchange a very small number of samples, and then exit the flow-graph, and do this in a loop?
That seems horribly inefficient, quit distinct from it perhaps uncovering possible bugs in the latest UHD.
But providing more information will help those who can help you.
-- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
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