added device name as configuration

main.py

@@ -6,9 +6,10 @@ from dotenv import load_dotenv
 load_dotenv()
 
 ntfy_token = os.environ['NTFY_Token']
+device_name = os.environ['device_name']
 shutdown_timer = 10
 
-with serial.Serial('COM10', 115200, timeout=1) as ser:
+with serial.Serial(device_name, 115200, timeout=1) as ser:
     inverter_offline_counter = 0
     while True:
         if ser.readline().decode().strip() == "0":