error handling

Author: HotNoob

classes/transports/modbus_rtu.py

@@ -33,14 +33,10 @@ def __init__(self, settings : SectionProxy, protocolSettings : protocol_settings
             raise ValueError("Port is not set")
 
         self.port = find_usb_serial_port(self.port) 
+        if not self.port:
+            raise ValueError("Port is not valid / not found")
 
-        serial_info = get_usb_serial_port_info(self.port)
-        if serial_info is None:
-            serial_info_str = "No serial info available"
-        else:
-            serial_info_str = str(serial_info)
-
-        print("Serial Port : " + self.port + " = ", serial_info_str) #print for config convience
+        print("Serial Port : " + self.port + " = ", get_usb_serial_port_info(self.port)) #print for config convience
 
         if "baud" in self.protocolSettings.settings:
             self.baudrate = strtoint(self.protocolSettings.settings["baud"])