You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
5.2 KiB
106 lines
5.2 KiB
#!/usr/bin/env python
|
|
#
|
|
# Digital Voice Modem - Fixed Network Equipment
|
|
# GPLv2 Open Source. Use is subject to license terms.
|
|
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
#
|
|
# @package DVM / dvmhost
|
|
#
|
|
###############################################################################
|
|
# Copyright (C) 2021 Bryan Biedenkapp <gatekeep@gmail.com>
|
|
#
|
|
# This program 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 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program 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 program; if not, write to the Free Software Foundation,
|
|
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
###############################################################################
|
|
from __future__ import print_function
|
|
|
|
from pprint import pprint
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Program Entry Point
|
|
# ---------------------------------------------------------------------------
|
|
|
|
if __name__ == '__main__':
|
|
import argparse
|
|
import os
|
|
|
|
MAX_FREQ_GAP = 25500000
|
|
HZ_MHZ = float(1000000)
|
|
|
|
print('Digital Voice Modem -> Identity Table Calculator D01.00')
|
|
|
|
# CLI argument parser
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('--base', action = 'store', dest = 'BaseFrequency', type = int, help = 'Base Frequency (in Hz)', required = True)
|
|
parser.add_argument('--spacing', action = 'store', dest = 'Spacing', type = float, help = 'Channel Spacing (in KHz)', required = True)
|
|
parser.add_argument('--offset', action = 'store', dest = 'InputOffset', type = float, help = 'Input Offset (in MHz)', required = True)
|
|
parser.add_argument('--bandwidth', action = 'store', dest = 'Bandwidth', type = float, help = 'Bandwidth (in KHz)', required = True)
|
|
parser.add_argument('--tx', action = 'store', dest = 'TxFrequency', type = int, help = 'Transmit Frequency (in Hz, this should be within the band of the Base Frequency)', required = False)
|
|
parser.add_argument('--ch-no', action = 'store', dest = 'ChannelNo', type = str, help = 'Logical Channel Number', required = False)
|
|
cli_args = parser.parse_args()
|
|
|
|
if (not cli_args.TxFrequency) and (not cli_args.ChannelNo):
|
|
print ('ERROR: Tx Frequency or Channel Number must be spcified!')
|
|
quit()
|
|
if (cli_args.TxFrequency) and (cli_args.ChannelNo):
|
|
print ('ERROR: Tx Frequency or Channel Number must be spcified!')
|
|
quit()
|
|
if (cli_args.TxFrequency):
|
|
if (cli_args.TxFrequency < cli_args.BaseFrequency):
|
|
print ('ERROR: Tx Frequency (' + '%.5f' % float(cli_args.TxFrequency / HZ_MHZ) + ') is out of band range for base frequency (' + '%.5f' % float(cli_args.BaseFrequency / HZ_MHZ) + '). ' + \
|
|
'Tx Frequency must be greater then the base frequency!')
|
|
quit()
|
|
if (cli_args.TxFrequency > (cli_args.BaseFrequency + MAX_FREQ_GAP)):
|
|
print ('ERROR: Tx Frequency (' + '%.5f' % float(cli_args.TxFrequency / HZ_MHZ) + ') is out of band range for base frequency (' + '%.5f' % float(cli_args.BaseFrequency / HZ_MHZ) + '). ' + \
|
|
'Tx Frequency must be no more then 25.5 Mhz higher then the base frequency!')
|
|
quit()
|
|
|
|
print ('\r\nIdentity Data:')
|
|
|
|
print ('Base Frequency: ' + '%.5f' % float(cli_args.BaseFrequency / HZ_MHZ) + ' MHz' +
|
|
'\r\nChannel Spacing: ' + '%.2f' % cli_args.Spacing + ' KHz' +
|
|
'\r\nReceive Offset: ' + '%.3f' % cli_args.InputOffset + ' MHz' +
|
|
'\r\nChannel Bandwidth: ' + '%.2f' % cli_args.Bandwidth + ' KHz')
|
|
|
|
print ('\r\nIdentity Table Line: "' + 'xx,' + str(cli_args.BaseFrequency) + ',' + str(cli_args.Spacing) + ',' +
|
|
'%.3f' % cli_args.InputOffset + ',' + str(cli_args.Bandwidth) + ',"')
|
|
|
|
print ('\r\nChannel Data:')
|
|
offsetHz = cli_args.InputOffset * HZ_MHZ
|
|
|
|
if cli_args.ChannelNo:
|
|
space = cli_args.Spacing / 0.125
|
|
chNo = int(cli_args.ChannelNo, 16)
|
|
|
|
rxFrequency = (cli_args.BaseFrequency + ((space * 125) * chNo)) + offsetHz
|
|
txFrequency = (cli_args.BaseFrequency + ((space * 125) * chNo))
|
|
|
|
print ('\r\nChannel Number: ' + '%x' % chNo)
|
|
|
|
print ('\r\nTx Frequency: ' + '%.5f' % (float(txFrequency / HZ_MHZ)) + ' MHz' +
|
|
'\r\nRx Frequency: ' + '%.5f' % (float(rxFrequency / HZ_MHZ)) + ' MHz')
|
|
else:
|
|
rxFrequency = int(cli_args.TxFrequency + offsetHz)
|
|
|
|
print ('Tx Frequency: ' + '%.5f' % (float(cli_args.TxFrequency / HZ_MHZ)) + ' MHz' +
|
|
'\r\nRx Frequency: ' + '%.5f' % (float(rxFrequency / HZ_MHZ)) + ' MHz')
|
|
|
|
spaceHz = int(cli_args.Spacing * 1000)
|
|
offsetHz = int(cli_args.InputOffset * HZ_MHZ)
|
|
|
|
rootFreq = cli_args.TxFrequency - cli_args.BaseFrequency
|
|
chNo = rootFreq / spaceHz
|
|
|
|
print ('\r\nChannel Number: ' + '%x' % chNo)
|