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| − | == A Monitor Session with Python ==
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| − | To understand the OWN messages better, you should start a monitor session on your Raspberry Pi and watch the OWN messages flying in from your domotic system. Analyzing these messages gives you an idea how it works. Below is a simple monitor script in Python.
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| − | start editor nano and create monitor.py
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| − | <pre>nano monitor.py</pre>
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| − |
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| − | Copy and paste the script below into that file and save it.
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| − | After you saved the file, you have to make the file executable:
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| − | <pre>chmod 755 monitor.py</pre>
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| − |
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| − | Copy the content of this script to moniotr.py
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| − | <pre>#! /usr/bin/python
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| − | # -*- coding: utf-8 -*-
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| − | import socket
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| − |
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| − | # IP address and port to connect to the gateway, please attapt to your environment
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| − | default_gateway_host = "192.168.60.201"
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| − | default_gateway_port = 20000
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| − |
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| − | gateway_addr_port = default_gateway_host, default_gateway_port
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| − | def monitor():
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| − | sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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| − | try:
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| − | sock.connect(gateway_addr_port)
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| − | data = sock.recv(1024)
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| − | # expect ACK from gateway
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| − | if data != "*#*1##":
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| − | raise Exception("Did not receive expected ACK, but: "+data)
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| − | # Switch session to MONITOR mode
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| − | sock.send("*99*1##")
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| − | data = ""
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| − | while 1:
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| − | # Read data from MyHome(R) BUS
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| − | next = sock.recv(1024)
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| − | if next == "":
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| − | break # EOF
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| − | data = data + next
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| − | eom = data.find("##")
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| − | if eom < 0:
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| − | continue; # Not a complete message, need more
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| − | if data[0] != "*":
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| − | raise Exception("Message does not start with '*': "+data)
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| − | print data
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| − | msg = data[1:eom]
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| − | data = data[eom+2:]
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| − | finally:
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| − | sock.close()
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| − |
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| − | monitor()</pre>
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| − |
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| − | Now start the monitor and watch the messages fly by. Exit with CTRL-C.
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| − | <pre>./monitor.py</pre>
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