On Wed, Jan 12, 2011 at 2:43 PM, John Andrews <gnu.f...@gmail.com> wrote: > Hi, > Suppose I have two gnuradio blocks called gr_ACQUISITION and gr_TRACKING > where, gr_TRACKING is dependent upon some result derived from gr_ACQ block. > Is it possible to pass certain messages to gr_TRACK in order to change its > state while the flowgraph is running? One way to do is to have an output > line in gr_ACQUISITION that carries this info to the block gr_TRACKING but > this doesn't seem like an attractive option to me. > > Thanks, > John.
We have recently introduced the concept of stream tags into GNU Radio that might be what you want. They are not currently well-documented, but you can find some information in my presentations from this years SDR conference (specifically Tues and Weds): http://gnuradio.org/redmine/wiki/gnuradio/SDR2010 You can also see a simple example in the code source (you'll have to be on the next branch in git right now): gnuradio-examples/python/tags I will hopefully soon find time to write more examples and document it better. But hopefully, the examples will be enough to show you how to add a tag to an output stream from one block and receive it in another block. If you manage to get it working, I'd be very interested to hear about your experiences. What you are looking to do sounds like it could be a perfect case study for the use of the tags that others could well benefit from. Tom _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio