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[Discuss-gnuradio] Huge delay with Osmocom sink
From: |
Daniel Estévez |
Subject: |
[Discuss-gnuradio] Huge delay with Osmocom sink |
Date: |
Mon, 17 Apr 2017 12:29:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
Hi guys,
I'm using the Osmocom sink with a LimeSDR. I'm testing with a very
simple flowgraph (attached): a cosine source's amplitude is toggled
according to the state of a QT push button, thus getting a crude CW
transmitter.
The problem I'm seeing is that there is a huge delay (about 5 seconds)
between the moment I press the button to the moment that the RF goes out
on the air. I think that the cause is that the LimeSDR takes around 5
seconds to start working, so the cosine source is holding back 5 seconds
worth of samples until the Oscomocom sink starts consuming samples.
If I split this flowgraph into two as follows:
1st) cosine -> throttle -> udp sink
2nd) upd source -> osmocom sink
and I start the second flowgraph and then the first, then I get little
delay, but this is a very ugly hack.
Is there a good way to solve this issue?
Regards,
Dani.
test.grc
Description: application/gnuradio-grc
signature.asc
Description: OpenPGP digital signature
- [Discuss-gnuradio] Huge delay with Osmocom sink,
Daniel Estévez <=