Re: [Discuss-gnuradio] stop/start is not called in gr.basic_block

[Bastian Bloessl]

Hi,

On 10/05/2017 03:13 AM, Miklos Maroti wrote:
> I am trying to implement a simple block in python but it seems that
> stop and start is never called when I implement them. The bare bones
> python code would be this:
>
> class test(gr.basic_class):
>      def __init__(self):
>          gr.basic_block.__init__(self, name="test", in_sig=None, out_sig=None)
>
>      def start(self):
>          print "never called"
>          return gr.basic_block.start(self)
>
> The same works in C++. I could not find any example that implements
> start/stp in python, but looking at the docs for gr.basic_block it
> should work. Any ideas?

AFAIK, if the block is not connected to any other block, it is not 
handled by the flow graph/scheduler.
If you don't actually have a use-case for a completely separate block, 
you could try adding a stream or message port an connect it.

Best,
Bastian