48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
from owrx.command import Option
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from owrx.source.direct import DirectSource, DirectSourceDeviceDescription
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from subprocess import Popen
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from csdr.chain import Chain
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from pycsdr.modules import Convert, Gain
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from pycsdr.types import Format
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import logging
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logger = logging.getLogger(__name__)
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class FifiSdrSource(DirectSource):
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def getCommandMapper(self):
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return (
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super()
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.getCommandMapper()
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.setBase("arecord")
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.setMappings({"device": Option("-D"), "samp_rate": Option("-r")})
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.setStatic("-t raw -f S16_LE -c2 -")
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)
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def getEventNames(self):
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return super().getEventNames() + ["device"]
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def getFormatConversion(self) -> Chain:
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return Chain([Convert(Format.COMPLEX_SHORT, Format.COMPLEX_FLOAT), Gain(Format.COMPLEX_FLOAT, 5.0)])
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def sendRockProgFrequency(self, frequency):
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process = Popen(["rockprog", "--vco", "-w", "--freq={}".format(frequency / 1e6)])
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process.communicate()
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rc = process.wait()
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if rc != 0:
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logger.warning("rockprog failed to set frequency; rc=%i", rc)
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def preStart(self):
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values = self.getCommandValues()
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self.sendRockProgFrequency(values["tuner_freq"])
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def onPropertyChange(self, changes):
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if "center_freq" in changes:
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self.sendRockProgFrequency(changes["center_freq"])
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class FifiSdrDeviceDescription(DirectSourceDeviceDescription):
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def getName(self):
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return "FiFi SDR"
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