Re: [Discuss-gnuradio] lock and unlock with transmit h_path and receive_path‏

[Veljko Pejovic]

Hi Eric,

You can find the example here:
http://cs.ucsb.edu/~veljko/downloads/tx_ofdm_flex.tar.gz
The example (benchmark_ofdm_tx_new.py) changes the number of carriers
(from 50, to 100, 150, and so on) after every 300 packets sent. It can
use either set_ofdm_parameters or set_ofdm_parameters_high, both
functions do lock-disconnect-connect-unlock but at different levels in
the graph hierarchy.

NOTE: I upgraded from release 3.2.2 to the current trunk and the
problem seems to be gone. If you want to replay the problem run the
example with gnuradio 3.2.2 and low decimation. At least that's when I
see it in my setup (Ubuntu 9.10, USRP2, XCVR2450)

cheers,


Veljko

2010/2/17 Eric Blossom <address@hidden>:
> On Mon, Feb 15, 2010 at 10:51:05AM -0800, Veljko Pejovic wrote:
>> Update:
>> I moved the reconfiguration one level up, to transmit_path.py and it
>> works for high interpolation values (low bit rate), but still hangs
>> for the low ones.
>>
>> I'm quite puzzled now, it seems that lock() - unlock() gets stuck when
>> there's too much flow going on.
>>
>>
>> cheers,
>> Veljko
>
> Veljko,
>
> Can you post a link to a complete example that produces the problem?
> Both the case you described earlier as well as this one would be
> useful.  The smaller the test case the better, if possible.
>
> Thanks,
> Eric
>