#!/usr/bin/env python3
# pylint: disable=line-too-long
"""
Quick control of configuration for receiving QO-100 DATV
"""
import traceback
import sys
from optparse import OptionParser # pylint: disable=deprecated-module
import requests
import sdrangel
BASE_URL_PATTERN = "http://{0}/sdrangel"
BASE_URL = None
# ======================================================================
def get_input_options():
""" Parse options """
# ----------------------------------------------------------------------
parser = OptionParser(usage="usage: %%prog [-t]\n")
parser.add_option("-a", "--address", dest="address", help="Address and port. Default: 127.0.0.1:8091", metavar="ADDRESS", type="string")
parser.add_option("-d", "--device", dest="device_index", help="Index of device set. Default 0", metavar="INT", type="int")
parser.add_option("-c", "--channel", dest="channel_index", help="Index of DATV demod channel. Default 0", metavar="INT", type="int")
parser.add_option("-f", "--frequency", dest="frequency", help="Device center frequency (kHz). Mandatory", metavar="INT", type="int")
parser.add_option("-s", "--symbol-rate", dest="symbol_rate", help="Symbol rate (kS/s). Mandatory", metavar="INT", type="int")
parser.add_option("-n", "--no-decim", dest="no_decim", help="Do not change decimation", action="store_true")
(options, args) = parser.parse_args()
if options.address is None:
options.address = "127.0.0.1:8091"
if options.device_index is None:
options.device_index = 0
if options.channel_index is None:
options.channel_index = 0
if options.frequency is None:
raise RuntimeError("Frequency (-f or --frequency) is mandatory")
if options.symbol_rate is None:
raise RuntimeError("Symbol rate (-s or --symbol-rate) is mandatory")
return options
class Controller:
""" Controller main class """
def __init__(self, options):
self.options = options
self.device_hwtype = None
# ======================================================================
def change_device_center_frequency(self, content, new_frequency):
""" Change device center frequency searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
self.change_device_center_frequency(content[k], new_frequency)
elif k == sdrangel.DEVICE_TYPES[self.device_hwtype]["cf_key"]:
content[k] = new_frequency
# ======================================================================
def change_decim(self, content, new_decim):
""" Change device log2 decimation searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
self.change_decim(content[k], new_decim)
elif k == sdrangel.DEVICE_TYPES[self.device_hwtype]["decim_key"]:
content[k] = new_decim
# ======================================================================
def change_channel_center_frequency(self, content, new_frequency):
""" Change DATV channel center frequency searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
self.change_channel_center_frequency(content[k], new_frequency)
elif k == "centerFrequency":
content[k] = new_frequency
# ======================================================================
def change_rfbw(self, content, new_rfbw):
""" Change DATV channel RF bandwidth searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
self.change_rfbw(content[k], new_rfbw)
elif k == "rfBandwidth":
content[k] = new_rfbw
# ======================================================================
def change_symbol_rate(self, content, new_symbol_rate):
""" Change DATV channel symbol rate searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
self.change_symbol_rate(content[k], new_symbol_rate)
elif k == "symbolRate":
content[k] = new_symbol_rate
# ======================================================================
def get_device_sr_and_decim(self, hwtype, settings):
""" Return device sample rate and decimation """
# ----------------------------------------------------------------------
decim_key = sdrangel.DEVICE_TYPES[self.device_hwtype]["decim_key"]
if hwtype in ("Airspy", "AirspyHF"):
sr_index = settings.get("devSampleRateIndex", 0)
if sr_index == 1:
sr = 3000000
else:
sr = 6000000
log2_decim = settings.get(decim_key, 0)
else:
sr = settings.get("devSampleRate", 0)
log2_decim = settings.get(decim_key, 0)
return sr, 1<<log2_decim
# ======================================================================
@staticmethod
def calc_decim(device_sr, symbol_rate):
""" Calculate ideal decimation and return as log2 """
# ----------------------------------------------------------------------
quot = device_sr // (2*symbol_rate*1000)
for i in range(6):
if quot < 1<<i:
break
return 0 if i < 1 else i - 1
# ======================================================================
def set_device(self):
""" Set the device """
# ----------------------------------------------------------------------
device_settings_url = f"{BASE_URL}/deviceset/{self.options.device_index}/device/settings"
r = requests.get(url=device_settings_url, timeout=10)
if r.status_code // 100 == 2: # OK
rj = r.json()
self.device_hwtype = rj.get("deviceHwType", None)
device_settings = rj.get(sdrangel.DEVICE_TYPES[self.device_hwtype]["settings"], None)
device_sr, device_decim = self.get_device_sr_and_decim(self.device_hwtype, device_settings)
new_decim = self.calc_decim(device_sr, self.options.symbol_rate)
print(f"sr: {device_sr} S/s decim: {device_decim} new decim: {1<<new_decim}")
if not self.options.no_decim:
self.change_decim(rj, new_decim)
self.change_device_center_frequency(rj, self.options.frequency*1000)
r = requests.patch(url=device_settings_url, json=rj, timeout=10)
if r.status_code / 100 == 2:
print(f'set_device: changed #{self.options.device_index}: frequency: {self.options.frequency} kHz log2Decim: {new_decim} No decim: {self.options.no_decim}')
else:
raise RuntimeError(f'set_device: failed to change device {self.options.device_index} with error {r.status_code}')
else:
raise RuntimeError(f"Cannot get device info for device set index {self.options.device_index} HTTP return code {r.status_code}")
# ======================================================================
def set_channel(self):
""" Set the channel - assume DATV demod """
# ----------------------------------------------------------------------
channel_settings_url = f"{BASE_URL}/deviceset/{self.options.device_index}/channel/{self.options.channel_index}/settings"
r = requests.get(url=channel_settings_url, timeout=10)
if r.status_code // 100 == 2: # OK
rj = r.json()
rfbw = round(1.5*self.options.symbol_rate)*1000
self.change_channel_center_frequency(rj, 0)
self.change_rfbw(rj, rfbw)
self.change_symbol_rate(rj, self.options.symbol_rate*1000)
r = requests.patch(url=channel_settings_url, json=rj, timeout=10)
if r.status_code / 100 == 2:
print(f'set_channel: changed {self.options.device_index}:{self.options.channel_index}: rfbw: {rfbw} Hz symbol rate: {self.options.symbol_rate} kS/s')
else:
raise RuntimeError(f'set_device: failed to change channel {self.options.device_index}:{self.options.channel_index} with error {r.status_code}')
else:
raise RuntimeError(f"Cannot get channel info for channel {self.options.device_index}:{self.options.channel_index} HTTP return code {r.status_code}")
# ======================================================================
def main():
""" Main program """
# ----------------------------------------------------------------------
try:
options = get_input_options()
global BASE_URL # pylint: disable=global-statement
BASE_URL = BASE_URL_PATTERN.format(options.address)
print(f"Frequency: 10{options.frequency/1000} MHz Symbol rate: {options.symbol_rate} kS/s")
controller = Controller(options)
controller.set_device()
controller.set_channel()
except Exception as ex: # pylint: disable=broad-except
tb = traceback.format_exc()
print(f"Exception caught {ex}")
print(tb, file=sys.stderr)
# ======================================================================
if __name__ == "__main__":
main()