On Thu, Jun 26, 2014 at 12:12 PM, Shashank Sinha <shashsinboy@gmail.com> wrote:
OS - Ubuntu 12.04RF Front-End - NI USRP- 2920UHD Driver - 3.7.1GNU Radio - 3.7.3Specs:I tried looking for an explanation online but was unsuccessful. Any ideas to the reason for the error. I am pretty sure it is not related to gr-ieee80211.I re-installed UHD drivers, GNU Radio as well as gr-foo and gr-ieee80211 . I started to run the transmitter with Performance Monitor but got the following error:ctrlport-monitor: radio.get threw exception (math domain error).
Are you running gr-ctrlport-monitor from the command line or using the GRC block?
If using this the latter way, I've noticed this happening on very complex flowgraphs. I think it basically makes a call to the flowgraph that the flowgraph doesn't properly respond to or provides a 0 result. If you launch the flowgraph first and then call the gr-ctrlport-monitor from the command line in a terminal, instead, the problem should go away.
Also, you could try running a simpler flowgraph just to verify that this and the performance monitor tool are working in a more controlled experiment.
Also, can you get the line number for where the assertion is coming from? It'd be good if we could put a check in there to prevent it from crashing like this.
Thanks,
Tom
On Wed, Jun 25, 2014 at 8:04 PM, Bastian Bloessl <bloessl@ccs-labs.org> wrote:
Hi Shashank,I just reran the example and it works for me, but maybe you can run the performance monitor for a simple flow graph with GNU Radio blocks only, just to assure that the error is not related to the 802-11 stuff...
On 06/25/2014 01:48 PM, Shashank Sinha wrote:
I was trying to use gr-perf-monitorx while running Bastian's
gr-ieee80211 project. I was encountering the following error :
Best,
Bastian
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