wire data parsing and storage

owrx/source/__init__.py

@@ -11,7 +11,7 @@ from owrx.command import CommandMapper
 from owrx.socket import getAvailablePort
 from owrx.property import PropertyStack, PropertyLayer
 from owrx.form import Input, TextInput, NumberInput, CheckboxInput, FloatInput
-from owrx.form.converter import IntConverter, OptionalConverter
+from owrx.form.converter import IntConverter, OptionalConverter, FloatConverter
 from owrx.controllers.settings import Section
 from typing import List
 
@@ -394,7 +394,7 @@ class SdrDeviceDescription(object):
                 "Run background services on this device",
                 converter=OptionalConverter(defaultFormValue=True),
             ),
-            FloatInput("rf_gain", "Device gain"),
+            FloatInput("rf_gain", "Device gain", converter=OptionalConverter(FloatConverter())),
         ]
 
     def mergeInputs(self, *args):

owrx/source/rtl_sdr.py

@@ -2,6 +2,7 @@ from owrx.source.connector import ConnectorSource, ConnectorDeviceDescription
 from owrx.command import Flag, Option
 from typing import List
 from owrx.form import Input, TextInput
+from owrx.form.converter import OptionalConverter
 
 
 class RtlSdrSource(ConnectorSource):
@@ -19,6 +20,11 @@ class RtlSdrDeviceDescription(ConnectorDeviceDescription):
         return self.mergeInputs(
             super().getInputs(),
             [
-                TextInput("device", "Device identifier", infotext="Device serial number or index"),
+                TextInput(
+                    "device",
+                    "Device identifier",
+                    infotext="Device serial number or index",
+                    converter=OptionalConverter(),
+                ),
             ],
         )

owrx/source/soapy.py

@@ -3,6 +3,7 @@ from owrx.command import Option
 from owrx.source.connector import ConnectorSource, ConnectorDeviceDescription
 from typing import List
 from owrx.form import Input, TextInput
+from owrx.form.converter import OptionalConverter
 from owrx.form.soapy import SoapyGainInput
 
 
@@ -108,6 +109,7 @@ class SoapyConnectorDeviceDescription(ConnectorDeviceDescription):
                     "device",
                     "Device Identifier",
                     infotext='SoapySDR device identifier string (example: "serial=123456789")',
+                    converter=OptionalConverter()
                 ),
                 SoapyGainInput(
                     "rf_gain",