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Re: [Discuss-gnuradio] Flow graph blocking when doing 2x1 transmission
From: |
Marcus Müller |
Subject: |
Re: [Discuss-gnuradio] Flow graph blocking when doing 2x1 transmission |
Date: |
Mon, 02 Jun 2014 16:50:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
Hi David,
Generally, this sounds like in principle, your application looks like
(nb: not an actual GR flowgraph)
+-----------------+ +------+
| sample source a |------------>| USRP |---> [USRP1]
+-----------------+ | |
| sink |
+-----------------+ | |
| sample source b |------------>| |---> [USRP2]
+-----------------+ +------+
Let's assume a is continuous and b starts later, or bursts or the like.
Can't you just split the flow graph into two independent flowgraphs,
syncing the USRPs using time stamps?
Alternatively, what about having a block that (rate limitedly) produces
zero-samples, unless data comes in on a message port?
Generally, using start-of-burst tags, the newly added command time
message interface for the uhd blocks, and multiple ways to detangle your
sample streams, there are many ways to solve your issues.
I think it would be wise if you described your setup in a little more
detail.
Greetings,
Marcus