python script to replace envertech SetID program for EnverBridge 202

diff --git a/home/enverbridge.py b/home/enverbridge.py
new file mode 100755 (executable)
index 0000000..4342407
--- /dev/null
+++ b/home/enverbridge.py
@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+
+# This script can be used to configure the Inverter IDs
+# on an Envertech EnverBridge device. This is a replacement
+# for the "SetID" programm provided as a Win32 executable at
+# http://www.envertec.com/uploads/bigfiles/Set%20ID.zip
+# Tested online with the EnverBridge 202 and Inverters which
+# have the same serial nummer on both labels.
+#
+# Logic seems the be the following:
+# Take the inverter id, append the char 9 to 16 of the 16 char
+# serial number. Do this for every pair of serial numbers.
+# Sent this string in one UDP paket to the broadcast address on
+# port 8765. Wait for a response paket to the broadcast address
+# on port 8764.
+
+from optparse import OptionParser
+import socket
+import sys
+import re
+
+parser = OptionParser(usage="usage: %prog [options] MIIDs")
+parser.add_option("-b", "--bid",
+                  action="store",
+                  type="int",
+                  dest="bid",
+                  help="Serial Number of your EnverBridge")
+(options, args) = parser.parse_args()
+
+
+def validateMIID(miids):
+    error = False
+    idpattern = re.compile(r"^CN[0-9]{14}$")
+    for id in miids:
+        print("Validating MIID", id)
+        if not idpattern.search(id):
+            print("Error: Invalid MIID", id)
+            error = True
+
+    if error:
+        print("Validation error, check your MIIDs, exiting")
+        sys.exit(23)
+
+
+def buildMIIDList(miids):
+    msg = ""
+    for id in miids:
+        msg = msg + id[8:16] + id[8:16]
+    return msg
+
+
+# minimal input validation
+if len(args) < 1:
+    print("Error: missing MIIDs, provide at least one inverter serial")
+    sys.exit(22)
+
+validateMIID(args)
+
+# assemble message string and convert to bytes
+message = str(options.bid) + buildMIIDList(args)
+message = message.encode()
+print('Sending to EnverBridge with ID', options.bid)
+
+# Create a UDP client socket w/ broadcast
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
+sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, True)
+
+# Create a UDP server socket we bind to to listen for broadcasts
+ssock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+ssock.bind(('', 8764))
+
+try:
+    # Send data via broadcast to port 8765
+    print('Sending {!r}'.format(message))
+    server_address = ('<broadcast>', 8765)
+    sent = sock.sendto(message, server_address)
+
+    # Receive response on port 8764
+    print('Waiting to receive')
+    data, server = ssock.recvfrom(8764)
+    print('Received {!r}'.format(data))
+
+finally:
+    print('Closing sockets')
+    sock.close()
+    ssock.close()