disable PPM input for devices that don't support it

owrx/source/__init__.py

@@ -514,6 +514,14 @@ class SdrDeviceDescription(object):
         """
         return None
 
+    def supportsPpm(self):
+        """
+        can be overridden if the device does not support configuring PPM correction
+
+        :return: bool
+        """
+        return True
+
     def getDeviceInputs(self) -> List[Input]:
         keys = self.getDeviceMandatoryKeys() + self.getDeviceOptionalKeys()
         return [TextInput("name", "Device name", validator=RequiredValidator())] + [
@@ -568,8 +576,7 @@ class SdrDeviceDescription(object):
         return ["name", "enabled"]
 
     def getDeviceOptionalKeys(self):
-        return [
-            "ppm",
+        keys = [
             "always-on",
             "services",
             "rf_gain",
@@ -577,6 +584,9 @@ class SdrDeviceDescription(object):
             "waterfall_levels",
             "scheduler",
         ]
+        if self.supportsPpm():
+            keys += ["ppm"]
+        return keys
 
     def getProfileMandatoryKeys(self):
         return ["name", "center_freq", "samp_rate", "start_freq", "start_mod"]

owrx/source/airspy.py

@@ -23,6 +23,12 @@ class AirspyDeviceDescription(SoapyConnectorDeviceDescription):
     def getName(self):
         return "Airspy R2 or Mini"
 
+    def supportsPpm(self):
+        # not supported by the device API
+        # frequency calibration can be done with separate tools and will be persisted on the device.
+        # see discussion here: https://groups.io/g/openwebrx/topic/79360293
+        return False
+
     def getInputs(self) -> List[Input]:
         return super().getInputs() + [
             BiasTeeInput(),

owrx/source/airspyhf.py

@@ -9,3 +9,7 @@ class AirspyhfSource(SoapyConnectorSource):
 class AirspyhfDeviceDescription(SoapyConnectorDeviceDescription):
     def getName(self):
         return "Airspy HF+ or Discovery"
+
+    def supportsPpm(self):
+        # not currently supported by the SoapySDR module.
+        return False

owrx/source/fifi_sdr.py

@@ -45,3 +45,7 @@ class FifiSdrSource(DirectSource):
 class FifiSdrDeviceDescription(DirectSourceDeviceDescription):
     def getName(self):
         return "FiFi SDR"
+
+    def supportsPpm(self):
+        # not currently mapped, and it's unclear how this should be sent to the device
+        return False

owrx/source/hackrf.py

@@ -18,6 +18,11 @@ class HackrfDeviceDescription(SoapyConnectorDeviceDescription):
     def getName(self):
         return "HackRF"
 
+    def supportsPpm(self):
+        # not implemented by the SoapySDR module.
+        # see discussion here: https://groups.io/g/openwebrx/topic/78339109
+        return False
+
     def getInputs(self) -> List[Input]:
         return super().getInputs() + [BiasTeeInput()]
 

owrx/source/perseussdr.py

@@ -53,6 +53,10 @@ class PerseussdrDeviceDescription(DirectSourceDeviceDescription):
     def getName(self):
         return "Perseus SDR"
 
+    def supportsPpm(self):
+        # not currently mapped, and not available as an option to "perseustest"
+        return False
+
     def getInputs(self) -> List[Input]:
         return super().getInputs() + [
             DropdownInput("attenuator", "Attenuator", options=AttenuatorOptions),

owrx/source/runds.py

@@ -40,6 +40,10 @@ class RundsDeviceDescription(ConnectorDeviceDescription):
     def getName(self):
         return "R&S device using EB200 or Ammos protocol"
 
+    def supportsPpm(self):
+        # currently not implemented in the connector
+        return False
+
     def getInputs(self) -> List[Input]:
         return super().getInputs() + [
             RemoteInput(),