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From: | Tom Rondeau |
Subject: | Re: [Discuss-gnuradio] New python block gr_modtool - When no inputs/outputs, which parent should I use? |
Date: | Tue, 24 Feb 2015 10:27:54 -0500 |
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
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