fix overlooked bias tee in airspy

owrx/source/airspy.py

@@ -1,25 +1,16 @@
+from owrx.command import Flag
 from .soapy import SoapyConnectorSource
 
 
 class AirspySource(SoapyConnectorSource):
+    def __init__(self, id, props, port):
+        super().__init__(id, props, port)
+        self.getCommandMapper().setMappings({
+            "bias_tee": Flag("-t biastee=true")
+        })
+
     def getDriver(self):
         return "airspy"
 
     def getEventNames(self):
         return super().getEventNames() + ["bias_tee"]
-
-    '''
-    def getCommand(self):
-        cmd = [
-                "soapy_connector -p {port} -c {controlPort}".format(port=self.port, controlPort=self.controlPort)
-                + ' -s {samp_rate} -f {tuner_freq} -g "{rf_gain}" -P {ppm} -d "{device}"'
-        ]
-        values = self.getCommandValues()
-        if values["iqswap"]:
-            cmd += " -i"
-        if self.rtlProps["rtltcp_compat"]:
-            cmd += " -r"
-        if values["bias_tee"]:
-            cmd += " -t biastee=true"
-        return cmd
-    '''