Multiple inverter support (#85)

README.md

@@ -242,6 +242,35 @@ AT+UPGRADE_Command_Supported: 255
 Method_Of_Protocol_Upgrade: 255
 ```
 
+## Running multiple inverter stations
+
+If you have multiple inverter stations, you can add them to the config file as a list. Make sure to publish to separate MQTT topics per inverter instance, and configure the Home Assistant MQTT sensors accordingly.
+
+```json
+[
+  {
+    "name": "Trannergy-1",
+    "stationId": 987,
+    "inverterId": 654,
+    "loggerId": 321,
+    "mqtt": {
+      "topic": "inverter1"
+    }
+  },
+  {
+    "name": "Trannergy-2",
+    "stationId": 123,
+    "inverterId": 456,
+    "loggerId": 789,
+    "mqtt": {
+      "topic": "inverter2"
+    }
+  }
+]
+```
+
+*Minimized example config; see `config.sample.json` for all fields.* 
+
 ## Home Assistant
 
 ```yaml

solarman/__init__.py

@@ -43,7 +43,7 @@ def main():
     args = parser.parse_args()
     solarman = SolarmanPV(args.file)
     if args.single:
-        solarman.single_run(args.file)
+        solarman.single_run_loop(args.file)
     elif args.daemon:
         solarman.daemon(args.file, args.interval)
     elif args.validate:

solarman/helpers.py

@@ -63,6 +63,7 @@
 
 If you need any further help, please see:
 <https://github.com/mpepping/solarman-mqtt>
+
 """
 
 
@@ -85,9 +86,7 @@ def __init__(self, config):
         except SchemaError as err:
             print(err.message)
             sys.exit(1)
-
         print(_VALID)
-        sys.exit(0)
 
 
 class HashPassword:  # pylint: disable=too-few-public-methods

solarman/solarmanpv.py

@@ -13,16 +13,14 @@
 
 logging.basicConfig(level=logging.INFO)
 
+
 class SolarmanPV:
     """
     SolarmanPV data collection and MQTT publishing
     """
 
     def __init__(self, file):
         self.config = self.load_config(file)
-        self.api    = SolarmanApi(self.config)
-        self.mqtt   = Mqtt(self.config["mqtt"])
-
 
     def load_config(self, file):
         """
@@ -31,25 +29,30 @@ def load_config(self, file):
         """
         with open(file, "r", encoding="utf-8") as config_file:
             config = json.load(config_file)
-            return config
 
+        if not isinstance(config, list):
+            config = [config]
+
+        return config
 
-    def validate_config(self, file):
+    def validate_config(self, config):
         """
         Validate config file
         :param file: Config file
         :return:
         """
-        config = self.load_config(file)
-        ConfigCheck(config)
-
+        config = self.load_config(config)
+        for conf in config:
+            print(
+                f"## CONFIG INSTANCE NAME: {conf['name']} [{config.index(conf) + 1}/{len(config)}]"
+            )
+            ConfigCheck(conf)
 
-    def single_run(self, file):
+    def single_run(self, config):
         """
         Output current watts and kilowatts
         :return:
         """
-        config = self.load_config(file)
         pvdata = SolarmanApi(config)
 
         station_data = pvdata.station_realtime
@@ -119,12 +122,10 @@ def single_run(self, file):
             )
         else:
             mqtt_connection.message(
-                topic + "/inverter/deviceState",
-                inverter_data.get("deviceState")
+                topic + "/inverter/deviceState", inverter_data.get("deviceState")
             )
             mqtt_connection.message(
-                topic + "/logger/deviceState",
-                logger_data.get("deviceState")
+                topic + "/logger/deviceState", logger_data.get("deviceState")
             )
             logging.info(
                 "%s - Inverter DeviceState: %s"
@@ -133,6 +134,13 @@ def single_run(self, file):
                 inverter_device_state,
             )
 
+    def single_run_loop(self, file):
+        """
+        Perform single runs for all config instances
+        """
+        config = self.load_config(file)
+        for conf in config:
+            self.single_run(conf)
 
     def daemon(self, file, interval):
         """
@@ -142,10 +150,12 @@ def daemon(self, file, interval):
         :return:
         """
         interval = int(interval)
-        logging.info("Starting daemonized with a %s seconds run interval", str(interval))
+        logging.info(
+            "Starting daemonized with a %s seconds run interval", str(interval)
+        )
         while True:
             try:
-                SolarmanPV.single_run(self, file)
+                SolarmanPV.single_run_loop(self, file)
                 time.sleep(interval)
             except Exception as error:  # pylint: disable=broad-except
                 logging.error("Error on start: %s", str(error))
@@ -154,7 +164,6 @@ def daemon(self, file, interval):
                 logging.info("Exiting on keyboard interrupt")
                 sys.exit(0)
 
-
     def create_passhash(self, password):
         """
         Create passhash from password