Hi Tim,
Thanks for your suggestion! I just tried it and it does not work. The
Python OOT def __init__(self, ....) method requires that one fills in in_sig
= xxx and out_sig = xxx.
I tried your suggestion above for variable number of inputs and set:
in_sig = [gr.io_signature(1, -1, gr.sizeof_gr_complex)]
and I leave the yml file as is when I had the static number of inputs (in_sig
= [complex64, complex64, complex64]) shown below
inputs:
- domain: stream
dtype: complex
multiplicity: '3'
It gives a TypeError: data type not understood
I tried a bunch of combinations based on the above change you suggested,
but GRC kept failing when I tried to run it.!
Thanks again for your suggestion!
Regards,
George
On Thu, Feb 4, 2021 at 8:01 AM Tim Huggins <huggins.timo...@yahoo.com>
wrote:
> George,
>
> I would recommend taking a look at some of the existing blocks that have
> variable inputs to accomplish this (especially for the YML file). A YML
> example for a variable input can be found here:
>
>
> https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/grc/blocks_multiply_xx.block.yml
>
> I haven't run a test using this line in a python block yet, but two
> different examples are shown below that I believe should work (or should
> with some minor tweaks). The first doesn't limit the number of inputs while
> the second one does (at 8).
>
> gr.io_signature(1, -1, gr.sizeof_gr_complex))
>
> gr.io_signature(1, 8, gr.sizeof_float)
>
> I don't know if there is a complete python reference for GNURadio 3.8, but
> this should be helpful to get you close as well:
> https://www.gnuradio.org/doc/sphinx-v3.7.9.2/
>
> Good luck,
>
> Tim
>
> On Thursday, February 4, 2021, 12:01:07 AM EST, George Edwards <
> gedwards....@gmail.com> wrote:
>
>
> Hi Gavin,
>
> Thanks for the information!
>
> Does this mean that if I wanted 3 inputs and 5 outputs and all floating
> point values, then inside the Python code, I simply set
> in_sig = [numpy.float32]
> out_sign = [numpy.float32]
>
> And, in the yml file I set:
> inputs:
> - domain: stream
> dtype: float
> multiplicity: '3'
>
> outputs:
> - domain: stream
> dtype: float
> multiplicity: '5'
>
> Would this be correct?
> Thanks again for your help!
>
> Regards,
> George
>
> On Wed, Feb 3, 2021 at 5:26 PM Gavin Jacobs <apriljunk...@hotmail.com>
> wrote:
>
> In 3.7, you would use the <nports> tag, but in 3.8 the trick to setting
> multiple ins/outs in the YML file, is the keyword "multiplicity". You can
> see the details of how to configure here:
> https://wiki.gnuradio.org/index.php/YAML_GRC
>
> YAML GRC - GNU Radio <https://wiki.gnuradio.org/index.php/YAML_GRC>
> Starting with release 3.8, YAML replaces XML as the file format for GNU
> Radio Companion. This is triggered by switching from Cheetah to Mako as the
> templating engine, since Cheetah does not support Python 3.
> wiki.gnuradio.org
>
>
