Re: [Discuss-gnuradio] looping with work() function

[Martin Braun]

On 03/11/2014 01:31 PM, Sumedha Goyal wrote:
> My top_block class represents the whole flowgraph. The class "test_demo"

No, it doesn't. It doesn't have any connect() calls or anything. This is
not a flow graph.

> is one of the blocks of this flowgraph for which its own work() function
> is defined.
> The "test_demo" checks for a "start sign"(given by the user) and
> participates in data transmission process and upon receiving an ACK for
> success should stop further transmission.
> At this point, the flowgraph should stop and start again with a new
> "start sign" for next iteration and so on. I am planning to plot the
> number of packets transmitted before receiving an ACK against this
> "start sign". Therefore, I need my flowgraph to execute several times. 
> I hope this description explains my intention. I am not very familiar
> with scheduler. How can I use the scheduler to do this?

If you're using a flow graph, you use the scheduler automatically, you
don't need to set it up or anything.

Have a look at the file I recommended. If you feel you don't understand
something, first read the introductory documents on the wiki, as well as
http://gnuradio.org/redmine/projects/gnuradio/wiki/Simulations.

Good luck,
Martin


> 
> 
> On Tue, Mar 11, 2014 at 3:12 PM, Activecat <address@hidden
> <mailto:address@hidden>> wrote:
> 
>     On Tue, Mar 11, 2014 at 5:04 PM, Martin Braun
>     <address@hidden <mailto:address@hidden>> wrote:
> 
>         On 03/11/2014 06:10 AM, Sumedha Goyal wrote:
>         > Hello
>         >
>         > I am executing a flowgraph where I pass different parameters
>         to the
>         > work() function of my block in every iteration.
> 
> 
>     If the "parameters" could be fed into work() as input elements, than
>     that is possible.
>     Please  describe the parameters in details.
> 
> 
>         > 1. I would like my flowgraph to execute once with a certain set of
>         > parameters and on satisfying a certain condition, it should stop
>         > execution (even if the queue/buffer of the block is not empty).
>         > 2. The control should come back to the main() function and the
>         next
>         > iteration should start with a new set of parameters and again upon
>         > satisfying a certain condition the flowgraph should exit.
> 
> 
>     In flow-graph there is no main() function, but only the scheduler in
>     the background.
>     Please give specific examples of what you are trying to accomplish.
> 
>     Regards,
>     Activecat
> 
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