added request for light theme

tools/test_get_theme.py

@@ -0,0 +1,47 @@
+import serial
+import struct
+from google.protobuf.message import DecodeError
+from serial.tools import list_ports
+
+from light_pb2 import RequestThemeSetting, Theme, ThemeSettings
+from usb_pb2 import PackageType
+from vcp_driver import *
+
+if __name__ == "__main__":
+        ser = setup_connection()
+
+        request = RequestThemeSetting()
+        request.deviceId = 0
+        request.theme = 1
+        print("send request")
+        print(request)
+
+        request_data = request.SerializeToString()
+        send_package(PackageType.LIGHT_REQUEST_THEME, request_data, ser)
+
+
+        print("wait for response")
+        # Read the header from the serial port
+        response_header = ser.read(5)  # assuming the header is 5 bytes long
+
+        # Unpack the header to get the length and type
+        length, typeid, check = struct.unpack('<HHB', response_header)
+
+        print(length, typeid, check)
+
+        # Check if the type is RESPONSE_DEVICE_LIST
+        if typeid == PackageType.LIGHT_SETTING_THEME:
+            # Read the response data from the serial port
+            response_data = ser.read(length)
+
+            # Try to parse the data as a ResponseDeviceList message
+            try:
+                response = ThemeSettings.FromString(response_data)
+                
+            except DecodeError:
+                # If we get a DecodeError, it means the data we read is not a valid
+                # ResponseDeviceList message. Ignore it and continue reading.
+                pass
+        
+
+        print(response)