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# -*- coding: utf-8 -*-
"""
This module is used to change settings of ODR-DabMod using
the ZMQ remote control socket.
"""
import zmq
import exceptions
import logging
import numpy as np
port = 9400
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.info("Instantiate Adapt object")
self.port = port
self.coef_path = coef_path
self.host = "localhost"
self._connect()
def _connect(self):
"""Establish the connection to ODR-DabMod using
a ZMQ socket that is in request mode (Client)"""
context = zmq.Context()
sock = context.socket(zmq.REQ)
sock.connect("tcp://%s:%d" % (self.host, self.port))
sock.send(b"ping")
data = sock.recv_multipart()
if data != ['ok']:
raise exceptions.RuntimeError(
"Could not connect to server %s %d." %
(self.host, self.port))
self.sock = sock
def send_receive(self, message):
"""Used to send a message to the ODR-DabMod. It always
returns a answer it also receives the next message
from ODR-DabMod over the ZMQ remote control socket.
Parameter
---------
message : str
The message string that will be sent to
the receiver.
"""
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
self.sock.send(part.encode(), flags=f)
data = self.sock.recv_multipart()
logging.info("Received message: %s" % message)
return data
def set_txgain(self, gain):
"""Set a new txgain for the ORD-DabMod.
Parameters
----------
gain : int
Value that will be set to be txgain
"""
if gain < 0 or gain > 89:
raise exceptions.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 ORD-DabMod."""
return self.send_receive("get uhd txgain")
def set_rxgain(self, gain):
"""Set a new rxgain for the ORD-DabMod.
Parameters
----------
gain : int
Value that will be set to be rxgain
"""
if gain < 0 or gain > 89:
raise exceptions.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 ORD-DabMod."""
return self.send_receive("get uhd rxgain")
def _read_coef_file(self):
coefs_complex = []
f = open(self.coef_path, 'r')
lines = f.readlines()
n_coefs = lines[0]
coefs = [float(l) for l in lines[1:]]
for r, c in zip(coefs[0::2], coefs[1::2]):
coefs_complex.append(np.complex64(r + 1j * c))
f.close()
return coefs_complex
def get_coefs(self):
return self._read_coef_file()
def _write_coef_file(self, coefs_complex):
coef_path = "/home/andreas/dab/ODR-DabMod/polyCoefsCustom"
f = open(coef_path, 'w')
f.write(str(len(coefs_complex)) + "\n")
for coef in coefs_complex:
f.write(str(coef.real) + "\n")
f.write(str(coef.imag) + "\n")
f.close()
def set_coefs(self, coefs_complex):
self._write_coef_file(coefs_complex)
self.send_receive("set memlesspoly coeffile polyCoefsCustom")
# The MIT License (MIT)
#
# Copyright (c) 2017 Andreas Steger
#
# 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.
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