1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
# -*- coding: utf-8 -*-
#
# DPD Calculation Engine: updates ODR-DabMod's predistortion block.
#
# http://www.opendigitalradio.org
# Licence: The MIT License, see notice at the end of this file
"""
This module is used to change settings of ODR-DabMod using
the ZMQ remote control socket.
"""
import zmq
import logging
import numpy as np
class Adapt:
"""Uses the ZMQ remote control to change parameters of the DabMod
Parameters
----------
port : int
Port at which the ODR-DabMod is listening to connect the
ZMQ remote control.
"""
def __init__(self, port, coef_path):
logging.debug("Instantiate Adapt object")
self.port = port
self.coef_path = coef_path
self.host = "localhost"
self._context = zmq.Context()
def _connect(self):
"""Establish the connection to ODR-DabMod using
a ZMQ socket that is in request mode (Client).
Returns a socket"""
sock = self._context.socket(zmq.REQ)
sock.connect("tcp://%s:%d" % (self.host, self.port))
sock.send(b"ping")
data = [el.decode() for el in sock.recv_multipart()]
if data != ['ok']:
raise RuntimeError(
"Could not ping server at %s %d: %s" %
(self.host, self.port, data))
return sock
def send_receive(self, message):
"""Send a message to ODR-DabMod. It always
returns the answer ODR-DabMod sends back.
An example message could be
"get uhd txgain" or "set uhd txgain 50"
Parameter
---------
message : str
The message string that will be sent to the receiver.
"""
sock = self._connect()
logging.info("Send message: %s" % message)
msg_parts = message.split(" ")
for i, part in enumerate(msg_parts):
if i == len(msg_parts) - 1:
f = 0
else:
f = zmq.SNDMORE
sock.send(part.encode(), flags=f)
data = [el.decode() for el in sock.recv_multipart()]
logging.info("Received message: %s" % message)
return data
def set_txgain(self, gain):
"""Set a new txgain for the ODR-DabMod.
Parameters
----------
gain : int
new TX gain, in the same format as ODR-DabMod's config file
"""
# TODO this is specific to the B200
if gain < 0 or gain > 89:
raise ValueError("Gain has to be in [0,89]")
return self.send_receive("set uhd txgain %d" % gain)
def get_txgain(self):
"""Get the txgain value in dB for the ODR-DabMod."""
# TODO handle failure
return self.send_receive("get uhd txgain")
def set_rxgain(self, gain):
"""Set a new rxgain for the ODR-DabMod.
Parameters
----------
gain : int
new RX gain, in the same format as ODR-DabMod's config file
"""
# TODO this is specific to the B200
if gain < 0 or gain > 89:
raise ValueError("Gain has to be in [0,89]")
return self.send_receive("set uhd rxgain %d" % gain)
def get_rxgain(self):
"""Get the rxgain value in dB for the ODR-DabMod."""
# TODO handle failure
return self.send_receive("get uhd rxgain")
def _read_coef_file(self, path):
"""Load the coefficients from the file in the format given in the README,
return ([AM coef], [PM coef])"""
coefs_am_out = []
coefs_pm_out = []
f = open(path, 'r')
lines = f.readlines()
n_coefs = int(lines[0])
coefs = [float(l) for l in lines[1:]]
i = 0
for c in coefs:
if i < n_coefs:
coefs_am_out.append(c)
elif i < 2*n_coefs:
coefs_pm_out.append(c)
else:
raise ValueError(
"Incorrect coef file format: too many coefficients in {}, should be {}, coefs are {}"
.format(path, n_coefs, coefs))
i += 1
f.close()
return (coefs_am_out, coefs_pm_out)
def get_coefs(self):
return self._read_coef_file(self.coef_path)
def _write_coef_file(self, coefs_am, coefs_pm, path):
assert(len(coefs_am) == len(coefs_pm))
f = open(path, 'w')
f.write("{}\n".format(len(coefs_am)))
for coef in coefs_am:
f.write("{}\n".format(coef))
for coef in coefs_pm:
f.write("{}\n".format(coef))
f.close()
def set_coefs(self, coefs_am, coefs_pm):
self._write_coef_file(coefs_am, coefs_pm, self.coef_path)
self.send_receive("set memlesspoly coeffile {}".format(self.coef_path))
# The MIT License (MIT)
#
# Copyright (c) 2017 Andreas Steger, Matthias P. Braendli
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
|
