On Tue, Feb 24, 2015 at 4:36 AM, Jorge Gallo <[email protected]> wrote:
> Hello,
>
> I tried to implement a python block which generates tuning commands every
> 5 seconds.
> Python block: 0 inputs, 0 outputs, 1 out_msg port which must be
> declared in the constructor.
>
> I used gr_modtool. I got some trouble that I think can be easily solved.
>
>
> New python block:
>
> #!/usr/bin/env python
> import numpy
> from gnuradio import gr
> import time
>
> class generador_NN(SOMETHING_1):
> def __init__(self):
> SOMETHING_1.__init__(SOMETHING_2)
> self.message_port_register_out(pmt.intern("ppm"))
>
>
> def general_work(self):
> while True:
> time.sleep(5)
> self.message_port_pub(pmt.intern("ppm"), pmt.to_pmt("freq",
> float(915e6)))
> time.sleep(5)
> self.message_port_pub(pmt.intern("ppm"), pmt.to_pmt("freq",
> float(916e6)))
>
>
> My trouble comes where the "SOMETHING" is:
>
> SOMETHING_1: gr.sync_block, gr.basic_block, gr.noblock ¿?
> When using gr_mod tool, which kind of block must specify? If I use sync or
> basic it complaints there are missing input/outputs. On the other hand if I
> write noblock there is no message_port_register_out method available.
> How can I solve that?
>
>
> SOMETHING_2: Depends which kind of block is the parent. Since there is no
> input/output it must be empty (self). Correct?
>
> Many thanks,
> Jorge
>
You can do it just as a gr.basic_block:
class newblock(gr.basic_block):
"""
What the block does.
"""
def __init__(self, args):
gr.basic_block.__init__(self,
name="newblock",
in_sig=[], # No streaming ports!
out_sig=[])
# Register the message port
self.message_port_register_out(pmt.intern('portname'))
You should take a look at our Guided Tutorials. The above code comes
straight from one of the example blocks we create in there that I made more
generic here.
http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials
Tom
_______________________________________________
Discuss-gnuradio mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
