Merge pull request #86 from amontefusco/iw0hdv

Perseus HF Receiver integration

owrx/source/perseussdr.py

@@ -0,0 +1,39 @@
+from .direct import DirectSource
+from owrx.command import Flag, Option
+
+
+#
+# In order to interface Perseus hardware, we resolve to use the
+# perseustest utility that comes with libperseus-sdr support package.
+# Below the base options used are shown:
+#
+# -p output    I/Q samples as 32 bits floating point
+# -d -1        suppress debug messages
+# -a           don't test attenuators on startup
+# -t 0         runs indefinitely
+# -o -         output samples on stdout
+#
+# As we are already returning I/Q samples as pairs of 32 bits
+# floating points (option -p),no need for further conversions,
+# so the method getFormatConversion(self) is not implemented at all.
+
+class PerseussdrSource(DirectSource):
+    def getCommandMapper(self):
+        return super().getCommandMapper().setBase("perseustest -p -d -1 -a -t 0 -o -  ").setMappings(
+            {
+                "samp_rate": Option("-s"),
+                "tuner_freq": Option("-f"),
+                "attenuator": Option("-u"),
+                "adc_preamp": Option("-m"),
+                "adc_dither": Option("-x"),
+                "wideband": Option("-w"),
+            }
+        )
+
+    def getEventNames(self):
+        return super().getEventNames() + [
+            "attenuator",
+            "adc_preamp",
+            "adc_dither",
+            "wideband",
+        ]