RDS decoder module for GNU Radio, that decodes multiple stations simultaneously
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2016 <+YOU OR YOUR COMPANY+>.
#
# This is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import numpy,pmt,functools
from gnuradio import gr
class multi_rds_printer(gr.sync_block):
"""
docstring for block multi_rds_printer
"""
def __init__(self, print_freq,nPorts):
gr.sync_block.__init__(self,
name="multi_rds_printer",
in_sig=None,
out_sig=None)
self.PS="station name"
self.RT="radio text"
self.PI="C0FE"
self.stations = {}
self.print_freq = print_freq
self.print_count=print_freq
for i in range(0,nPorts):
self.message_port_register_in(pmt.intern('in%d'%i))
self.set_msg_handler(pmt.intern('in%d'%i), functools.partial(self.handle_msg, port=i))
def handle_msg(self, msg, port):
t = pmt.to_long(pmt.tuple_ref(msg, 0))
m = pmt.symbol_to_string(pmt.tuple_ref(msg, 1))
#code.interact(local=locals())
if(t==0):
self.PI=m
self.stations[str(port)+"PI"]=m
elif(t==1):
self.PS=m
self.stations[str(port)+"PS"]=m
elif(t==4):
self.RT=m
self.stations[str(port)+"RT"]=m
self.print_count -= 1
#print(self.stations)
if (self.print_count==0):
self.print_count=self.print_freq
print("########## stations ###########")
for key in sorted(self.stations):
print("%s: %s" % (key, self.stations[key]))
# def work(self, input_items, output_items):
# in0 = input_items[0]
# out = output_items[0]
# # <+signal processing here+>
# out[:] = in0
# return len(output_items[0])