add unit test for --set-owner and --set-ham; refactor setting encryption after

meshtastic/node.py

@@ -5,7 +5,7 @@ import logging
 import base64
 from google.protobuf.json_format import MessageToJson
 from . import portnums_pb2, apponly_pb2, admin_pb2, channel_pb2
-from .util import pskToString, stripnl, Timeout, our_exit
+from .util import pskToString, stripnl, Timeout, our_exit, fromPSK
 
 
 class Node:
@@ -56,6 +56,12 @@ class Node:
 
         self._requestSettings()
 
+    def turnOffEncryptionOnPrimaryChannel(self):
+        """Turn off encryption on primary channel."""
+        self.channels[0].settings.psk = fromPSK("none")
+        print("Writing modified channels to device")
+        self.writeChannel(0)
+
     def waitForConfig(self):
         """Block until radio config is received. Returns True if config has been received."""
         return self._timeout.waitForSet(self, attrs=('radioConfig', 'channels'))