Updates

device_server.py

@@ -11,11 +11,20 @@ Add addresses to REGISTER_COMMANDS to capture more register ranges.
 import os
 import re
 import subprocess
+import threading
 
 from flask import Flask, jsonify, request
 
 app = Flask(__name__)
 
+# ---------------------------------------------------------------------------
+# Video playback state (managed as a subprocess)
+# ---------------------------------------------------------------------------
+KIOSK_SCRIPT = "/root/python/display_test_nexio.py"
+
+_video_proc: subprocess.Popen | None = None
+_video_lock = threading.Lock()
+
 # ---------------------------------------------------------------------------
 # Register commands to execute on each GET /registers request.
 # Each entry is a complete memtool command string.
@@ -180,5 +189,41 @@ def get_sn65_registers():
     }), 200
 
 
+@app.route("/video", methods=["PUT"])
+def control_video():
+    """Start or stop the kiosk video player.
+
+    PUT /video   {"action": "start"|"stop"}
+    """
+    global _video_proc
+    data   = request.get_json(force=True) or {}
+    action = data.get("action", "").lower()
+
+    with _video_lock:
+        if action == "start":
+            if _video_proc is not None and _video_proc.poll() is None:
+                return jsonify({"status": "already_running", "pid": _video_proc.pid}), 200
+            _video_proc = subprocess.Popen(
+                ["python3", KIOSK_SCRIPT],
+                stdout=subprocess.DEVNULL,
+                stderr=subprocess.DEVNULL,
+            )
+            return jsonify({"status": "started", "pid": _video_proc.pid}), 200
+
+        elif action == "stop":
+            if _video_proc is not None and _video_proc.poll() is None:
+                _video_proc.terminate()
+                try:
+                    _video_proc.wait(timeout=3)
+                except subprocess.TimeoutExpired:
+                    _video_proc.kill()
+                    _video_proc.wait()
+            _video_proc = None
+            return jsonify({"status": "stopped"}), 200
+
+        else:
+            return jsonify({"error": "Invalid action. Use 'start' or 'stop'"}), 400
+
+
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=5000)