feat: Implement a Deye inverter monitoring web application with Flask, pysolarmanv5, and a basic HTML dashboard.

app.py

@@ -0,0 +1,66 @@
+from flask import Flask, jsonify, render_template
+from pysolarmanv5 import PySolarmanV5
+import config
+
+app = Flask(__name__)
+
+def get_inverter_data():
+    """
+    Connects to the inverter and reads voltage registers.
+    Returns a dictionary with the data.
+    """
+    try:
+        inverter = PySolarmanV5(
+            config.INVERTER_IP,
+            config.INVERTER_SERIAL,
+            port=config.INVERTER_PORT,
+            mb_slave_id=config.INVERTER_SLAVE_ID,
+            verbose=False
+        )
+        
+        # Registers to read:
+        # 150: Grid Voltage (Input Voltage) - 0.1V
+        # 154: Output Voltage - 0.1V
+        # 157: Load Voltage - 0.1V
+        
+        # Reading individually for simplicity, though block read is more efficient if contiguous
+        # But these are slightly apart (150, 154, 157). 
+        # We can read a block from 150 to 157 (8 registers) and parse.
+        
+        # Let's read block starting at 150, length 8.
+        # 150 -> Index 0
+        # 154 -> Index 4
+        # 157 -> Index 7
+        
+        raw_data = inverter.read_holding_registers(register_addr=150, quantity=8)
+        
+        input_voltage = raw_data[0] * 0.1
+        output_voltage = raw_data[4] * 0.1
+        load_voltage = raw_data[7] * 0.1
+        
+        inverter.disconnect()
+        
+        return {
+            "input_voltage": round(input_voltage, 1),
+            "output_voltage": round(output_voltage, 1),
+            "load_voltage": round(load_voltage, 1),
+            "status": "success"
+        }
+        
+    except Exception as e:
+        return {
+            "status": "error",
+            "message": str(e)
+        }
+
+@app.route('/')
+def index():
+    return render_template('index.html')
+
+@app.route('/api/data')
+def api_data():
+    data = get_inverter_data()
+    return jsonify(data)
+
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0')