Re: [Discuss-gnuradio] "Catching" end of flowgraph execution with GUI

[Nemanja Savic]

Hi all guys,

I understand more or less what you are suggesting, although I am not familiar with any multithreading framework, but at least I could ask somebody here in the house. The problem is following, as I described in my other (recent :)) posts:

I have top block which consists of two flowgraphs, ie. tx path and rx path. Tx path transmitts limited number of frames and then stops, but RX continues to work, which means that top block will also never stop. I want to be able to stop also RX path after the TX has finished. For this reason I don't know how to catch that TX has finished and to proceed with stopping RX.

Best and thanx,

Nemanja

On Tue, May 5, 2015 at 8:10 PM, Koslowski, Sebastian (CEL) <address@hidden> wrote:

I had a similar problem recently. My solution was to subclass the
flowgraph adding the required functionality. Check out the
_top_block_waiter class in top_block.py. You can reimplement that logic
to e.g. add a time-out the the wait() call on the event or have a
callback executed.

Sebastian

On 05/05/2015 02:00 PM, Nemanja Savic wrote:

> Hi all (again),
>
> is there any way to catch that my flowgraph has finished execution, to
> reconfigure it after that and to be able to watch signals in GUI?
>
> In my application I I would like to set some start and end values and
> to press some kind of start button. After that flowgraph runs for the
> first set of config parameters and after the execution is finished, it
> should reconfigure itself and restart it for the second set of
> parameters, and so on ... Meanwhile I would like to watch some signals
> in GUI.
>
> I see that top_block_gui class calls infinite main loop and then it
> blocks there. I suppose that in order to acomplish above stated tast,
> I would need some kind of callback on flowgraph execution end. Is it
> possible to make something like this?
>
> Thanx,
>
> --
> Nemanja Savić

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Karlsruhe Institute of Technology (KIT)
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Dipl.-Ing. Sebastian Koslowski
Research Associate

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KIT – University of the State of Baden-Wuerttemberg and National Research Center of the Helmholtz Association

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Nemanja Savić