Nevermind now, I figured it out!
It turns out that using produce() instead of consume() does the trick, but
I couldn't say why. So, the last three lines should be
output_items[0][:] = input_items[0]
self.produce(0, len(output_items[0]))
return -2
Although, in the following block, I just returned len(output_items[0])
without using consume() or produce() and it works fine. So, apparently, my
code is a bit random, but I'm happy it works now. :)
Thanks for your help, Jeff!
Best regards,
Verónica
On Thu, Oct 28, 2021 at 8:47 AM Verónica Toro Betancur <vetor...@gmail.com>
wrote:
> I see but no, I'm not processing a finite number of samples. I'm
> generating a message periodically with a Message Strobe, then the message
> is encoded and modulated as a WiFi signal using the modules in:
> https://github.com/bastibl/gr-ieee802-11. Now, I'm trying to detect the
> signals myself and then decode them with the blocks from the same
> gr-ieee802-11 repository. The block I'm implementing in python looks like
> this:
>
> class short_sync_blk(gr.sync_block):
> def __init__(self):
> gr.sync_block.__init__(self,name='Custom short preamble
> detection', in_sig=[np.complex64], out_sig=[np.complex64])
> <+define some variables+>
>
> def work(self, input_items, output_items):
> print(input_items[0]) # Here is where I see that, after one
> iteration, input_items[0] is filled with zeros
> <+some processing+>
> <+insert a tag+>
> output_items[0][:] = input_items[0]
> self.consume_each(len(output_items[0]))
> return len(output_items[0])
>
> Is this enough? Or should I put all the actual code in here with all the
> connected blocks?
>
> Thanks in advance.
>
>
> Best regards,
> Verónica
>
