mirror of https://github.com/hb9fxq/gr-digitalhf
90 lines
3.6 KiB
Python
90 lines
3.6 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# Copyright 2018 hcab14@gmail.com.
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#
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# This is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# This software is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this software; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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import numpy as np
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from gnuradio import gr
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import pmt
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class msg_proxy(gr.basic_block):
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"""
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docstring for block msg_proxy
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"""
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def __init__(self, physical_layer_object):
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gr.basic_block.__init__(self,
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name="msg_proxy",
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in_sig=[],
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out_sig=[])
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self._obj = physical_layer_object
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self._quality = 0.0
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self._doppler = 0.0
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self._port_doppler = pmt.intern("doppler")
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self.message_port_register_in(self._port_doppler)
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self.message_port_register_out(self._port_doppler)
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self.set_msg_handler(self._port_doppler, self.msg_handler_doppler)
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self._port_frame_info = pmt.intern("frame_info")
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self.message_port_register_in(self._port_frame_info)
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self.message_port_register_out(self._port_frame_info)
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self.set_msg_handler(self._port_frame_info, self.msg_handler_frame)
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self._port_bits = pmt.intern("bits")
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self.message_port_register_out(self._port_bits)
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def start(self):
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return True
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def msg_handler_doppler(self, msg_in):
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## print('-------------------- msg_handler_doppler --------------------')
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iq_samples = pmt.to_python(pmt.cdr(msg_in))
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doppler = self._obj.get_doppler(iq_samples)
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self._doppler = doppler['doppler']
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self.message_port_pub(self._port_doppler, pmt.to_pmt(doppler))
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def msg_handler_frame(self, msg_in):
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## print('-------------------- msg_handler_frame --------------------')
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symbols = pmt.to_python(pmt.dict_ref(msg_in, pmt.intern('symbols'), pmt.PMT_NIL))
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soft_dec = pmt.to_python(pmt.dict_ref(msg_in, pmt.intern('soft_dec'), pmt.PMT_NIL))
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symb,constellation_idx,do_continue,save_soft_dec = self._obj.get_next_frame(symbols)
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if len(soft_dec) != 0:
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bits,q = self._obj.decode_soft_dec(soft_dec)
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if len(bits) > 0:
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self._quality = q
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bits = np.array(bits, dtype=np.uint8)
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msg_out = pmt.make_dict()
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msg_out = pmt.dict_add(msg_out, pmt.intern('packet_len'), pmt.to_pmt(len(bits)))
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msg = pmt.cons(msg_out, pmt.to_pmt(bits))
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self.message_port_pub(self._port_bits, msg)
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msg_out = pmt.to_pmt({'symb': symb['symb'],
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'scramble': symb['scramble'],
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'scramble_xor': symb['scramble_xor'],
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'constellation_idx': constellation_idx,
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'do_continue': np.bool(do_continue),
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'save_soft_dec': np.bool(save_soft_dec)})
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self.message_port_pub(self._port_frame_info, msg_out)
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def get_quality(self):
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return ('%5.1f %%' % self._quality)
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def get_doppler(self):
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return self._doppler
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