Re: [Discuss-gnuradio] GRC bug in Variable Sink

[Josh Blum]

Ed Criscuolo wrote:
> Forgot to mention I'm using GRC 0.69 and GnuRadio 3.1.1
>
> @(^.^)@  Ed
>
>
> Ed Criscuolo wrote:
> > Josh,
> >
> >   I believe I've uncovered a bug in the Variable Sink block.
> > It seems to work fine when the input type is "float",
> > but fails to function correctly when the input type is
> > either "int" or "short".  The flowgraph continues to
> > run, but the variable is either set to zero of does
> > not change at all.

Ed,

Its seems that the variable sink casts the number to a float: 
numpy.fromstring (s, numpy.float32) regardless of the input type. I 
admit that I didnt know 100% what i was doing when I made this variable 
sink...

So, only use the variable sink as a float input type, and place a short 
to float converter between the udp sink and the variable sink. (there is 
currently no int to float converter in gnuradio) I hope that works!

Since it seems to be useful, I will make a shiny new variable sink in 
the grc trunk. BTW, there is a converter script now for older flow 
graphs if you are willing to try it out.

-Josh

> > I'm trying to use it to add a "command port" to a
> > flowgraph that receives a single "int" or "short"
> > from an external application (via a UDP Source block),
> > and uses it to tune a doppler correction.
> >
> > @(^.^)@  Ed
> >
> >
> >
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