update readme

README.md

@@ -2,7 +2,7 @@
 
 This Python library facilitates communication with Hoymiles DTUs and the HMS-XXXXW-2T HMS microinverters, utilizing protobuf messages.
 
-For the Home Assistant integration have a look here: 
+For the Home Assistant integration have a look here:
 https://github.com/suaveolent/ha-hoymiles-wifi
 
 **Disclaimer: This library is not affiliated with Hoymiles. It is an independent project developed to provide tools for interacting with Hoymiles HMS-XXXXW-2T series micro-inverters featuring integrated WiFi DTU. Any trademarks or product names mentioned are the property of their respective owners.**
@@ -27,7 +27,7 @@ You can integrate the library into your own project, or simply use it in the com
 ### Command line:
 
 ```
-hoymiles-wifi [-h] --host HOST [--as-json] <command>
+hoymiles-wifi [-h] --host HOST [--local_addr IP_OF_INTERFACE_TO_USE] [--as-json] <command>
 
 commands:
     get-real-data-new,

hoymiles_wifi/__main__.py

@@ -314,6 +314,12 @@ async def main() -> None:
     parser.add_argument(
         "--host", type=str, required=True, help="IP address or hostname of the DTU"
     )
+    parser.add_argument(
+        "--local_addr",
+        type=str,
+        required=False,
+        help="IP address of the interface to bind to",
+    )
     parser.add_argument(
         "--as-json",
         action="store_true",
@@ -347,7 +353,7 @@ async def main() -> None:
     )
     args = parser.parse_args()
 
-    dtu = DTU(args.host)
+    dtu = DTU(args.host, args.local_addr)
 
     # Execute the specified command using a switch case
     switch = {

hoymiles_wifi/dtu.py

@@ -70,10 +70,11 @@ class NetworkState(Enum):
 class DTU:
     """DTU class."""
 
-    def __init__(self, host: str):
+    def __init__(self, host: str, local_addr: str = None):
         """Initialize DTU class."""
 
         self.host = host
+        self.local_addr = local_addr
         self.state = NetworkState.Unknown
         self.sequence = 0
         self.mutex = asyncio.Lock()
@@ -365,11 +366,13 @@ class DTU:
             + request_as_bytes
         )
 
-        address = (self.host, dtu_port)
+        ip_to_bind = (self.local_addr, 0) if self.local_addr is not None else None
 
         async with self.mutex:
             try:
-                reader, writer = await asyncio.open_connection(*address)
+                reader, writer = await asyncio.open_connection(
+                    host=self.host, port=dtu_port, local_addr=ip_to_bind
+                )
 
                 writer.write(message)
                 await writer.drain()

setup.py

@@ -6,7 +6,7 @@ setup(
     name="hoymiles-wifi",
     packages=["hoymiles_wifi", "hoymiles_wifi.protobuf"],
     install_requires=["protobuf", "crcmod"],
-    version="0.2.3",
+    version="0.2.4",
     description="A python library for interfacing with the Hoymiles DTUs and the HMS-XXXXW-2T series of micro-inverters using protobuf messages.",
     author="suaveolent",
     include_package_data=True,