python backend arduino service

pi/backend/main.py

@@ -1,16 +1,22 @@
-"""Smart Serow Backend - GPS service with HTTP API."""
+"""Smart Serow Backend - GPS and Arduino services with HTTP API."""
 
 from flask import Flask, jsonify
 from gps_service import GPSService
+from arduino_service import ArduinoService
 
 app = Flask(__name__)
 gps = GPSService()
+arduino = ArduinoService()
 
 
 @app.route("/health")
 def health():
     """Health check endpoint."""
-    return jsonify({"status": "ok", "gps_connected": gps.connected})
+    return jsonify({
+        "status": "ok",
+        "gps_connected": gps.connected,
+        "arduino_connected": arduino.connected,
+    })
 
 
 @app.route("/gps")
@@ -25,13 +31,27 @@ def gps_history():
     return jsonify(gps.get_buffer())
 
 
+@app.route("/arduino")
+def arduino_data():
+    """Current Arduino telemetry (voltage, rpm, etc)."""
+    return jsonify(arduino.get_latest())
+
+
+@app.route("/arduino/history")
+def arduino_history():
+    """Buffered Arduino telemetry history."""
+    return jsonify(arduino.get_buffer())
+
+
 def main():
     """Entry point."""
     gps.start()
+    arduino.start()
     try:
         # Host 0.0.0.0 for access from Flutter app
         app.run(host="0.0.0.0", port=5000, debug=False)
     finally:
+        arduino.stop()
         gps.stop()