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ScriptsAPI: added a script to control DATV receiver for QO-100 wideband downlink
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@ -58,6 +58,18 @@ In this example we have a Rx device on index 0 and a Tx device on index 1. All s
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Important: you should initiate switch over by stopping the active device and not by starting the other.
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<h2>qo100_datv.py</h2>
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Quick control of configuration for receiving QO-100 DATV to rapidly follow spotted activity on [BATC web sdr](https://eshail.batc.org.uk/wb/)
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Options are:
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- `-h` or `--help` show this help message and exit
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- `-a` or `--address` address and port of SDRangel instance API. Default: 127.0.0.1:8091
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- `-d` or `--device` index of device set. Default 0
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- `-c` or `--channel` index of DATV demod channel. Default 0
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- `-f` or `--frequency` device center frequency (kHz). Mandatory. Ex: 491500
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- `-s` or `--symbol-rate` symbol rate (kS/s). Mandatory. Ex: 1500
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<h2>config.py</h2>
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Sends a sequence of commands recorded in a JSON file which is in the form of a list of commands.
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@ -289,4 +301,4 @@ Holds constants related to SDRangel software required by other scripts
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Run as `python <file>` in the virtual environment
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- `test_superscanner.py` is testing `superscanner.py`
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- `test_superscanner.py` is testing `superscanner.py`
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171
scriptsapi/qo100_datv.py
Executable file
171
scriptsapi/qo100_datv.py
Executable file
@ -0,0 +1,171 @@
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#!/usr/bin/env python3
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"""
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Quick control of configuration for receiving QO-100 DATV
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"""
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import requests, traceback, sys, json, time
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from optparse import OptionParser
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import sdrangel
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base_url_pattern = "http://{0}/sdrangel"
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base_url = None
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# ======================================================================
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def getInputOptions():
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""" Parse options """
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# ----------------------------------------------------------------------
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parser = OptionParser(usage="usage: %%prog [-t]\n")
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parser.add_option("-a", "--address", dest="address", help="Address and port. Default: 127.0.0.1:8091", metavar="ADDRESS", type="string")
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parser.add_option("-d", "--device", dest="device_index", help="Index of device set. Default 0", metavar="INT", type="int")
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parser.add_option("-c", "--channel", dest="channel_index", help="Index of DATV demod channel. Default 0", metavar="INT", type="int")
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parser.add_option("-f", "--frequency", dest="frequency", help="Device center frequency (kHz). Mandatory", metavar="INT", type="int")
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parser.add_option("-s", "--symbol-rate", dest="symbol_rate", help="Symbol rate (kS/s). Mandatory", metavar="INT", type="int")
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(options, args) = parser.parse_args()
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if options.address is None:
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options.address = "127.0.0.1:8091"
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if options.device_index is None:
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options.device_index = 0
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if options.channel_index is None:
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options.channel_index = 0
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if options.frequency is None:
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raise RuntimeError("Frequency (-f or --frequency) is mandatory")
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if options.symbol_rate is None:
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raise RuntimeError("Symbol rate (-s or --symbol-rate) is mandatory")
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return options
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# ======================================================================
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def change_center_frequency(content, new_frequency):
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""" Change center frequency searching recursively """
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# ----------------------------------------------------------------------
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for k in content:
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if isinstance(content[k], dict):
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change_center_frequency(content[k], new_frequency)
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elif k == "centerFrequency":
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content[k] = new_frequency
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# ======================================================================
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def change_decim(content, new_decim):
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""" Change log2 decimation searching recursively """
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# ----------------------------------------------------------------------
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for k in content:
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if isinstance(content[k], dict):
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change_decim(content[k], new_decim)
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elif k == "log2Decim":
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content[k] = new_decim
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# ======================================================================
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def change_rfbw(content, new_rfbw):
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""" Change RF bandwidth searching recursively """
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# ----------------------------------------------------------------------
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for k in content:
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if isinstance(content[k], dict):
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change_rfbw(content[k], new_rfbw)
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elif k == "rfBandwidth":
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content[k] = new_rfbw
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# ======================================================================
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def change_symbol_rate(content, new_symbol_rate):
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""" Change symbol rate searching recursively """
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# ----------------------------------------------------------------------
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for k in content:
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if isinstance(content[k], dict):
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change_symbol_rate(content[k], new_symbol_rate)
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elif k == "symbolRate":
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content[k] = new_symbol_rate
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# ======================================================================
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def get_device_sr_and_decim(hwtype, settings):
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""" Return device sample rate and decimation """
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# ----------------------------------------------------------------------
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if hwtype == "Airspy" or hwtype == "AirspyHF":
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sr_index = settings.get("devSampleRateIndex", 0)
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if sr_index == 1:
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sr = 3000000
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else:
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sr = 6000000
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log2_decim = settings.get("log2Decim", 0)
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else:
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sr = settings.get("devSampleRate", 0)
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log2_decim = settings.get("log2Decim", 0)
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return sr, 1<<log2_decim
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# ======================================================================
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def calc_decim(device_sr, symbol_rate):
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""" Calculate ideal decimation and return as log2 """
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# ----------------------------------------------------------------------
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quot = device_sr // (2*symbol_rate*1000)
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for i in range(6):
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if quot < 1<<i:
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break
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return 0 if i < 1 else i - 1
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# ======================================================================
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def set_device(options):
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""" Set the device """
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# ----------------------------------------------------------------------
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device_settings_url = f"{base_url}/deviceset/{options.device_index}/device/settings"
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r = requests.get(url=device_settings_url)
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if r.status_code // 100 == 2: # OK
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rj = r.json()
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hwtype = rj.get("deviceHwType", None)
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device_settings = rj.get(sdrangel.DEVICE_TYPES[hwtype]["settings"], None)
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device_sr, device_decim = get_device_sr_and_decim(hwtype, device_settings)
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new_decim = calc_decim(device_sr, options.symbol_rate)
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print(f"sr: {device_sr} S/s decim: {device_decim} new decim: {1<<new_decim}")
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change_decim(rj, new_decim)
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change_center_frequency(rj, options.frequency*1000)
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r = requests.patch(url=device_settings_url, json=rj)
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if r.status_code / 100 == 2:
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print(f'set_device: changed {options.device_index}: frequency: {options.frequency} kHz log2Decim: {new_decim}')
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else:
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raise RuntimeError(f'set_device: failed to change device {options.device_index} with error {r.status_code}')
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else:
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raise RuntimeError(f"Cannot get device info for device set index {options.device_index} HTTP return code {r.status_code}")
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# ======================================================================
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def set_channel(options):
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""" Set the channel - assume DATV demod """
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# ----------------------------------------------------------------------
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channel_settings_url = f"{base_url}/deviceset/{options.device_index}/channel/{options.channel_index}/settings"
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r = requests.get(url=channel_settings_url)
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if r.status_code // 100 == 2: # OK
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rj = r.json()
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rfbw = round(1.5*options.symbol_rate)*1000
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change_center_frequency(rj, 0)
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change_rfbw(rj, rfbw)
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change_symbol_rate(rj, options.symbol_rate*1000)
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r = requests.patch(url=channel_settings_url, json=rj)
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if r.status_code / 100 == 2:
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print(f'set_channel: changed {options.device_index}:{options.channel_index}: rfbw: {rfbw} Hz symbol rate: {options.symbol_rate} kS/s')
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else:
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raise RuntimeError(f'set_device: failed to change channel {options.device_index}:{options.channel_index} with error {r.status_code}')
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else:
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raise RuntimeError(f"Cannot get channel info for channel {options.device_index}:{options.channel_index} HTTP return code {r.status_code}")
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# ======================================================================
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def main():
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""" Main program """
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# ----------------------------------------------------------------------
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try:
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options = getInputOptions()
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global base_url
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base_url = base_url_pattern.format(options.address)
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print(f"Frequency: 10{options.frequency/1000} MHz Symbol rate: {options.symbol_rate} kS/s")
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set_device(options)
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set_channel(options)
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except Exception as ex:
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tb = traceback.format_exc()
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print(tb, file=sys.stderr)
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# ======================================================================
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if __name__ == "__main__":
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main()
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@ -4,10 +4,18 @@ Constants that refer to SDRangel software
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# Device keys depending on hardware type (deviceHwType)
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DEVICE_TYPES = {
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"Airspy": {
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"settings": "airspySettings",
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"cf_key": "centerFrequency",
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},
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"AirspyHF": {
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"settings": "airspyHFSettings",
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"cf_key": "centerFrequency",
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}
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},
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"RTLSDR": {
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"settings": "rtlSdrSettings",
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"cf_key": "centerFrequency",
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},
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}
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# Channel keys depending on channel type (id)
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@ -27,6 +35,11 @@ CHANNEL_TYPES = {
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"df_key": "inputFrequencyOffset",
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"mute_key": "decodeActive"
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},
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"DATVDemod": {
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"settings": "DATVDemodSettings",
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"df_key": "centerFrequency",
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"mute_key": "audioMute"
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},
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"DSDDemod": {
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"settings": "DSDDemodSettings",
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"df_key": "inputFrequencyOffset",
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@ -57,4 +70,4 @@ CHANNEL_TYPES = {
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"df_key": "inputFrequencyOffset",
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"mute_key": "audioMute"
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}
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}
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}
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