>>> Hi,
>>>
>>> I'm currently using the UCLA ZigBee PHY implementation posted on:
>>> https://www.cgran.org/wiki/UCLAZigBee
>>> with gnuradio.
>>>
>>> My question is the following:
>>> How can I forward a parameter from: src/python/ieee802_15_4_pkt.py
>>> ... e.g. from the "send_pkt(...)" function (or any other)
>>> to the c++ block in : src/lib/ucla_symbols_to_chips_bi.cc ?
>>>
>>> Or more generally speaking: How can I forward a parameter from a python
>>> application to the c++ processing block?
>>> If possible it would be great to use the io_signatures...
>>
>> during instantiation of the block or during runtime? If it's during
>> instantiation, you can use a parameter to the constructor of your C++
>> block. But, if you want something during runtime I do not think it is
>> possible given the current architecture. You do not explicitly call the
>> work() function where the processing is done, this is done within the
>> GNU Radio framework.
>>
>> - George
>
> Well I'd need it during runtime.
> What about using a shared memory block between the python and the
> c++ block? Or what about calling a function from within the c++
> block, which would get the parameter from the python block or a
> specific memory block
>
> Thanks for the help!
>
> - Bjoern
Or how could I extend "ucla_symbols_to_chips_bi" to have more inputs,
such that I could have one more stream forwarded from
"ieee_802_15_4.py" to "ucla_symbols_to_chips_bi"?
For that you need to change the io_signature.
gr_make_io_signature (1, -1, sizeof (unsigned char)),
to
gr_make_io_signature (2, -1, sizeof (unsigned char)),
Ah, great, thanks a lot!
But where can I find that new stream to fill!? In other words:
-how can I generate a new variable / stream and
-where do I submit it, such that it is forwarded to the corresponding
c++ block, and
-how can I access it from within the c++ block!?
thanks a lot
best,
Bjoern
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