deal with serial_cx issues

examples/pubsub_example.py

@@ -44,6 +44,8 @@ async def main():
         
     print("Connected to MeshCore device")
     
+    res = await meshcore.commands.send_device_query()
+
     # Get contacts
     result = await meshcore.commands.get_contacts()
     if result.type == EventType.ERROR:
@@ -118,4 +120,4 @@ if __name__ == "__main__":
         # This prevents the KeyboardInterrupt traceback from being shown
         print("\nExited cleanly")
     except Exception as e:
-        print(f"Error: {e}")
+        print(f"Error: {e}")

examples/serial_channel_manager.py

@@ -113,4 +113,4 @@ async def set_channel_config(mc):
     print()
 
 if __name__ == "__main__":
-    asyncio.run(main())
+    asyncio.run(main())

examples/serial_infos.py

@@ -1,15 +1,14 @@
 #!/usr/bin/python
 
 import asyncio
-
-from meshcore import MeshCore
+from meshcore import MeshCore, EventType
 
 PORT = "/dev/tty.usbserial-583A0069501"
 BAUDRATE = 115200
 
 async def main():
     mc = await MeshCore.create_serial(PORT, BAUDRATE)
-    
+
     print(mc.self_info)
     
     await mc.disconnect()