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Merge pull request #842 from darksidelemm/testing
Web control updates, preliminary KA9Q server support (no spectrum)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| #!/usr/bin/env python | ||
| # | ||
| # radiosonde_auto_rx - SDR Abstraction - KA9Q-Radio | ||
| # | ||
| # Copyright (C) 2022 Mark Jessop <vk5qi@rfhead.net> | ||
| # Released under GNU GPL v3 or later | ||
| # | ||
|
|
||
| import logging | ||
| import os.path | ||
| import platform | ||
| import subprocess | ||
| from .utils import timeout_cmd | ||
|
|
||
|
|
||
| def ka9q_setup_channel( | ||
| sdr_hostname, | ||
| frequency, | ||
| sample_rate | ||
| ): | ||
| # tune --samprate 48000 --frequency 404m09 --mode iq --ssrc 404090000 --radio sonde.local | ||
| _cmd = ( | ||
| f"{timeout_cmd()} 5 " # Add a timeout, because connections to non-existing servers block for ages | ||
| f"tune " | ||
| f"--samprate {int(sample_rate)} " | ||
| f"--mode iq " | ||
| f"--frequency {int(frequency)} " | ||
| f"--ssrc {int(frequency)} " | ||
| f"--radio {sdr_hostname}" | ||
| ) | ||
|
|
||
| logging.debug(f"KA9Q - Starting channel at {frequency} Hz, with command: {_cmd}") | ||
|
|
||
| try: | ||
| _output = subprocess.check_output( | ||
| _cmd, shell=True, stderr=subprocess.STDOUT | ||
| ) | ||
| except subprocess.CalledProcessError as e: | ||
| # Something went wrong... | ||
|
|
||
| if e.returncode == 124: | ||
| logging.critical( | ||
| f"KA9Q ({sdr_hostname}) - tune call failed while opening channel with a timeout. Is the server running?" | ||
| ) | ||
| elif e.returncode == 127: | ||
| logging.critical( | ||
| f"KA9Q ({sdr_hostname}) - Could not find KA9Q-Radio 'tune' binary! This may need to be compiled and installed." | ||
| ) | ||
| else: | ||
| logging.critical( | ||
| f"KA9Q ({sdr_hostname}) - tune call failed while opening channel with return code {e.returncode}." | ||
| ) | ||
| # Look at the error output in a bit more details. | ||
| #_output = e.output.decode("ascii") | ||
|
|
||
| # TODO - see if we can look in the output for any error messages. | ||
| return False | ||
|
|
||
| return True | ||
|
|
||
|
|
||
| def ka9q_close_channel( | ||
| sdr_hostname, | ||
| frequency | ||
| ): | ||
|
|
||
| _cmd = ( | ||
| f"{timeout_cmd()} 5 " # Add a timeout, because connections to non-existing servers block for ages | ||
| f"tune " | ||
| f"--samprate 48000 " | ||
| f"--mode iq " | ||
| f"--frequency 0 " | ||
| f"--ssrc {int(frequency)} " | ||
| f"--radio {sdr_hostname}" | ||
| ) | ||
|
|
||
| logging.debug(f"KA9Q - Closing channel at {frequency} Hz, with command: {_cmd}") | ||
|
|
||
| try: | ||
| _output = subprocess.check_output( | ||
| _cmd, shell=True, stderr=subprocess.STDOUT | ||
| ) | ||
| except subprocess.CalledProcessError as e: | ||
| # Something went wrong... | ||
|
|
||
| if e.returncode == 124: | ||
| logging.critical( | ||
| f"KA9Q ({sdr_hostname}) - tune call failed while closing channel with a timeout. Is the server running?" | ||
| ) | ||
| elif e.returncode == 127: | ||
| logging.critical( | ||
| f"KA9Q ({sdr_hostname}) - Could not find KA9Q-Radio 'tune' binary! This may need to be compiled and installed." | ||
| ) | ||
| else: | ||
| logging.critical( | ||
| f"KA9Q ({sdr_hostname}) - tune call failed while closing chanel with return code {e.returncode}." | ||
| ) | ||
| # Look at the error output in a bit more details. | ||
| #_output = e.output.decode("ascii") | ||
|
|
||
| # TODO - see if we can look in the output for any error messages. | ||
| return False | ||
|
|
||
| return True | ||
|
|
||
|
|
||
| def ka9q_get_iq_cmd( | ||
| sdr_hostname, | ||
| frequency, | ||
| sample_rate | ||
| ): | ||
|
|
||
| # We need to setup a channel before we can use it! | ||
| _setup_success = ka9q_setup_channel(sdr_hostname, frequency, sample_rate) | ||
|
|
||
| if not _setup_success: | ||
| logging.critical(f"KA9Q ({sdr_hostname}) - Could not setup rx channel! Decoder will likely timeout.") | ||
|
|
||
| # Get the 'PCM' version of the server name, where as assume -pcm is added to the first part of the hostname. | ||
| _pcm_host = sdr_hostname.split('.')[0] + "-pcm." + ".".join(sdr_hostname.split(".")[1:]) | ||
|
|
||
| # pcmcat -2 -s 404090000 sonde-pcm.local | ||
| _cmd = ( | ||
| f"pcmcat -2 " | ||
| f"-s {int(frequency)} " | ||
| f"{_pcm_host} |" | ||
| ) | ||
|
|
||
| return _cmd |
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