commit 9dd75085ad8b1a0f69aa2a58ac8ed1bcd246aef7
Author: Franziska Kunsmann <hi@kunsmann.eu>
Date:   Sat Jul 27 15:42:50 2024 +0200

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f7275bb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+venv/
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..7544f5b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+paho-mqtt==1.6.1
+pyModbusTCP==0.2.1
diff --git a/sdm630_mqtt.py b/sdm630_mqtt.py
new file mode 100644
index 0000000..9e2aaa5
--- /dev/null
+++ b/sdm630_mqtt.py
@@ -0,0 +1,121 @@
+import logging
+from sys import argv
+from time import sleep
+
+import paho.mqtt.client as mqtt
+from pyModbusTCP.client import ModbusClient
+from pyModbusTCP.utils import decode_ieee, word_list_to_long
+
+logging.basicConfig(level=logging.DEBUG)
+LOG = logging.getLogger(__name__)
+
+
+class SDM630_MQTT:
+    def __init__(
+        self,
+        modbus_host,
+        mqtt_host="localhost",
+        modbus_port=4196,
+        mqtt_port=1883,
+        modbus_unit=1,
+        mqtt_prefix="sdm630",
+    ):
+        self.modbus = ModbusClient(
+            host=modbus_host,
+            port=modbus_port,
+            unit_id=modbus_unit,
+        )
+        self.modbus.timeout = 10
+
+        self.mqtt = mqtt.Client()
+        self.mqtt_host = mqtt_host
+        self.mqtt_port = mqtt_port
+        self.mqtt_prefix = mqtt_prefix
+
+        self.mqtt.on_connect = self._on_mqtt_connect
+        self.mqtt.on_disconnect = self._on_mqtt_disconnect
+
+    def _publish(self, topic, msg):
+        LOG.debug(f"_publish({topic!r}, {msg!r})")
+        self.mqtt.publish(f"{self.mqtt_prefix.rstrip('/')}/{topic}", msg)
+
+    def _on_mqtt_connect(self, client, userdata, flags, rc):
+        LOG.info(f"Connected to mqtt server {self.mqtt_host}:{self.mqtt_port}")
+
+    def _on_mqtt_disconnect(self, client, userdata, rc):
+        LOG.info(f"Disconnected from mqtt server {self.mqtt_host}:{self.mqtt_port}")
+
+    def start(self):
+        LOG.debug("_start()")
+        self.mqtt.connect(self.mqtt_host, self.mqtt_port, 10)
+        self.mqtt.loop_start()
+
+    def stop(self):
+        self.mqtt.loop_stop()
+        self.mqtt.disconnect()
+
+    def request_and_publish(self):
+        self.modbus.open()
+        for idx, (readable, address) in enumerate(
+            {
+                "apparent-power/L1": 0x000C,
+                "apparent-power/L2": 0x000E,
+                "apparent-power/L3": 0x0010,
+                "apparent-power/total": 0x0034,
+                "current/L1": 0x0006,
+                "current/L2": 0x0008,
+                "current/L3": 0x000A,
+                "current/average": 0x002E,
+                "current/neutral": 0x00E0,
+                "current/total": 0x0030,
+                "export_kVArh": 0x004C,
+                "export_kWh": 0x004A,
+                "frequency": 0x0046,
+                "import_kVArh": 0x004E,
+                "import_kWh": 0x0048,
+                "phase-angle/L1": 0x0024,
+                "phase-angle/L2": 0x0026,
+                "phase-angle/L3": 0x0028,
+                "phase-angle/total": 0x003E,
+                "power-factor/L1": 0x001E,
+                "power-factor/L2": 0x0020,
+                "power-factor/L3": 0x0022,
+                "power-factor/total": 0x003E,
+                "reactive-power/L1": 0x0018,
+                "reactive-power/L2": 0x001A,
+                "reactive-power/L3": 0x001E,
+                "reactive-power/total": 0x003C,
+                "voltage/L1_L2": 0x00C8,
+                "voltage/L1_N": 0x0000,
+                "voltage/L2_L3": 0x00CA,
+                "voltage/L2_N": 0x0002,
+                "voltage/L3_L1": 0x00CC,
+                "voltage/L3_N": 0x0004,
+                "voltage/average": 0x002A,
+            }.items()
+        ):
+            read = self.modbus.read_input_registers(address, 2)
+            longs = word_list_to_long(read)
+            if len(longs) == 1:
+                self._publish(readable, decode_ieee(longs[0]))
+            else:
+                self._publish(readable, sum([decode_ieee(x) for x in longs]))
+            if idx % 20:
+                self.modbus.close()
+                self.modbus.open()
+        self.modbus.close()
+
+
+if __name__ == "__main__":
+    client = SDM630_MQTT(
+        "192.168.1.254",
+        "nas.home.kunbox.net",
+    )
+    client.start()
+    try:
+        while True:
+            client.request_and_publish()
+            sleep(2)
+    except Exception as e:
+        LOG.exception('oops')
+        client.stop()