Configure over CLI.

oi-sensor/oi-sensor.py

@@ -16,9 +16,21 @@ import numpy as np
 import asyncio
 import logging
 from asyncua import Server
+import argparse
 
 SLEEP_DURATION = 10e-3 # 10 milliseconds
 
+# command line handling
+parser = argparse.ArgumentParser(description='Run optical inspection OPC UA server.')
+a = parser.add_argument
+a('--ipv4', help='The IPv4 address on which the OPC UA server runs', default="0.0.0.0")
+a('--port', help='The port on which the OPC UA server runs', default="4840")
+a('--camera', help='The index of the camera (i.e. indxed in /dev/videoX)', default=0)
+args = parser.parse_args()
+ipv4 = args.ipv4
+port = args.port
+camera = int(args.camera)
+
 def nothing(x):
     # any operation
     pass
@@ -28,7 +40,7 @@ async def main():
     # setup our server
     server = Server()
     await server.init()
-    server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
+    server.set_endpoint("opc.tcp://%s:%s/freeopcua/server/" %(ipv4, port))
 
     # set up our own namespace, not really necessary but should as spec
     uri = "http://examples.freeopcua.github.io"
@@ -40,7 +52,7 @@ async def main():
     await myvar.set_writable()
 
     # init camera
-    cap = cv2.VideoCapture(2)
+    cap = cv2.VideoCapture(camera)
     cv2.namedWindow("Trackbars")
     cv2.createTrackbar("L-H", "Trackbars", 0, 180, nothing)
     cv2.createTrackbar("L-S", "Trackbars", 0, 255, nothing)