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

[Martin Braun]

Please stay on the mailing list.

On 03/11/2014 02:37 PM, Sumedha Goyal wrote:
> I haven't shown the whole code here but the top_class has all the
> connect() functions required to connect the various blocks. I've gone
> through the link that you have sent me. In this example, the work()
> function is not used anywhere. I would like to do a similar thing but
> cannot avoid work(). Is there a way around?

work() is called in every single block. This is how blocks work. Have a
look at the "out of tree module" tutorial.

Martin

> 
> 
> On Tue, Mar 11, 2014 at 6:19 PM, Martin Braun <address@hidden
> <mailto:address@hidden>> wrote:
> 
>     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>
>     > <mailto:address@hidden <mailto:address@hidden>>> wrote:
>     >
>     >     On Tue, Mar 11, 2014 at 5:04 PM, Martin Braun
>     >     <address@hidden <mailto:address@hidden>
>     <mailto: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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