Re: [Discuss-gnuradio] how to trigger dynamic reconfiguration with lock/disconnect

[Yang]

My mistake. I do change frequency while the transmit graph is running. The real problem is the rx side (sensing) and tx (transmitting) side cannot run in the same time (my rx and tx is realized with receive path and transmit path in one top block). So I first run the rx to sense, then stop it and start tx side to transmit with the sensing result.

I see you mention your rx and tx chains running at the same time, is it possible?

-- 
Yang
Sent with Sparrow

On 2011年6月2日星期四 at 上午10:29, Marcus D. Leech wrote:

On 06/01/2011 10:10 PM, Yang wrote:

Oh, my problem is the same with yours: I want to change transmit
frequency according to the sensing result from rx side. I tried lock()
and unlock() but cannot work.

You know that you can change frequency at any time, right? You don't
have to lock the flowgraph to do
so. It's a simple parrameter change, not a flow-graph configuration
change. Reconfiguration in
the lock()/unlock() sense involves ripping blocks out of the graph and
installing new ones.

But simple parameter changes for an existing, running, graph don't count
as "reconfiguration".

Also, if I had this problem to cope with, I wouldn't bother with any of
that fancy lock()/reconfigure/unlock()
stuff. I'd have my transmit chain, and my receive chain, and some
logic, and I'd simply arrange for my
transmit chain to transmit nothing while I was in the "explore the
spectrum" phase--either by sending 0s,
or using a "valve".


--
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org