Re: [Discuss-gnuradio] Question about hier block

[Eric Blossom]

On Fri, Mar 26, 2010 at 05:23:34PM +0100, Axel Belliard wrote:
> Hi
> 
> I'm trying to make a very simple hier block. ( see the code below). When I
> execute my top block i get no error, but the data seems to never enter the
> hier block ( the print-line prints  : "()"). What am I doing wrong?

You're printing from the constructor, before the graph has been run.


> 
> 
> ####my hier block#########
> from gnuradio import gr
> class Trameur(gr.hier_block2):
>       def __init__(self):
>               gr.hier_block2.__init__(self, "Trameur",gr.io_signature(1, 1,
> gr.sizeof_char),gr.io_signature(1, 1, gr.sizeof_char))
> 
> 
>               #####input####
>               self.in_data = gr.vector_sink_b()
>               self.connect(self ,self.in_data)
>               self.src_data = self.in_data.data()
>                 print self.src_data
> 
>               #######output###########"
>               self.out_data = gr.vector_source_b (self.src_data)
>               self.connect(self.out_data , self)
> 
> #####################My top block############################
> 
> 
> from gnuradio import gr
> from Trameur_stanag import Trameur
> class top(gr.top_block):
>       def __init__(self):
>               gr.top_block.__init__(self)
> 
>               self.src_data =
> (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1)
> 
>               self.in_data =   gr.vector_source_b(self.src_data)
>               self.tramage = Trameur ()
>               self.sink2=gr.vector_sink()
> 
>               self.connect( self.in_data, self.tramage)
>               self.connect(self.tramage, self.sink2)
> 
> if __name__ == '__main__':
>       try:
>               tb = top()
>               tb.run()
>       except KeyboardInterrupt:
>               pass