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sdrangel/scriptsapi/qo100_datv.py

172 lines
7.5 KiB
Python
Executable File

#!/usr/bin/env python3
"""
Quick control of configuration for receiving QO-100 DATV
"""
import requests, traceback, sys, json, time
from optparse import OptionParser
import sdrangel
base_url_pattern = "http://{0}/sdrangel"
base_url = None
# ======================================================================
def getInputOptions():
""" 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")
(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
# ======================================================================
def change_center_frequency(content, new_frequency):
""" Change center frequency searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
change_center_frequency(content[k], new_frequency)
elif k == "centerFrequency":
content[k] = new_frequency
# ======================================================================
def change_decim(content, new_decim):
""" Change log2 decimation searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
change_decim(content[k], new_decim)
elif k == "log2Decim":
content[k] = new_decim
# ======================================================================
def change_rfbw(content, new_rfbw):
""" Change RF bandwidth searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
change_rfbw(content[k], new_rfbw)
elif k == "rfBandwidth":
content[k] = new_rfbw
# ======================================================================
def change_symbol_rate(content, new_symbol_rate):
""" Change symbol rate searching recursively """
# ----------------------------------------------------------------------
for k in content:
if isinstance(content[k], dict):
change_symbol_rate(content[k], new_symbol_rate)
elif k == "symbolRate":
content[k] = new_symbol_rate
# ======================================================================
def get_device_sr_and_decim(hwtype, settings):
""" Return device sample rate and decimation """
# ----------------------------------------------------------------------
if hwtype == "Airspy" or hwtype == "AirspyHF":
sr_index = settings.get("devSampleRateIndex", 0)
if sr_index == 1:
sr = 3000000
else:
sr = 6000000
log2_decim = settings.get("log2Decim", 0)
else:
sr = settings.get("devSampleRate", 0)
log2_decim = settings.get("log2Decim", 0)
return sr, 1<<log2_decim
# ======================================================================
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(options):
""" Set the device """
# ----------------------------------------------------------------------
device_settings_url = f"{base_url}/deviceset/{options.device_index}/device/settings"
r = requests.get(url=device_settings_url)
if r.status_code // 100 == 2: # OK
rj = r.json()
hwtype = rj.get("deviceHwType", None)
device_settings = rj.get(sdrangel.DEVICE_TYPES[hwtype]["settings"], None)
device_sr, device_decim = get_device_sr_and_decim(hwtype, device_settings)
new_decim = calc_decim(device_sr, options.symbol_rate)
print(f"sr: {device_sr} S/s decim: {device_decim} new decim: {1<<new_decim}")
change_decim(rj, new_decim)
change_center_frequency(rj, options.frequency*1000)
r = requests.patch(url=device_settings_url, json=rj)
if r.status_code / 100 == 2:
print(f'set_device: changed {options.device_index}: frequency: {options.frequency} kHz log2Decim: {new_decim}')
else:
raise RuntimeError(f'set_device: failed to change device {options.device_index} with error {r.status_code}')
else:
raise RuntimeError(f"Cannot get device info for device set index {options.device_index} HTTP return code {r.status_code}")
# ======================================================================
def set_channel(options):
""" Set the channel - assume DATV demod """
# ----------------------------------------------------------------------
channel_settings_url = f"{base_url}/deviceset/{options.device_index}/channel/{options.channel_index}/settings"
r = requests.get(url=channel_settings_url)
if r.status_code // 100 == 2: # OK
rj = r.json()
rfbw = round(1.5*options.symbol_rate)*1000
change_center_frequency(rj, 0)
change_rfbw(rj, rfbw)
change_symbol_rate(rj, options.symbol_rate*1000)
r = requests.patch(url=channel_settings_url, json=rj)
if r.status_code / 100 == 2:
print(f'set_channel: changed {options.device_index}:{options.channel_index}: rfbw: {rfbw} Hz symbol rate: {options.symbol_rate} kS/s')
else:
raise RuntimeError(f'set_device: failed to change channel {options.device_index}:{options.channel_index} with error {r.status_code}')
else:
raise RuntimeError(f"Cannot get channel info for channel {options.device_index}:{options.channel_index} HTTP return code {r.status_code}")
# ======================================================================
def main():
""" Main program """
# ----------------------------------------------------------------------
try:
options = getInputOptions()
global base_url
base_url = base_url_pattern.format(options.address)
print(f"Frequency: 10{options.frequency/1000} MHz Symbol rate: {options.symbol_rate} kS/s")
set_device(options)
set_channel(options)
except Exception as ex:
tb = traceback.format_exc()
print(tb, file=sys.stderr)
# ======================================================================
if __name__ == "__main__":
main()