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mqtt-viessmann.py
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mqtt-viessmann.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
import serial
import binascii
import mosquitto
from threading import Lock
client = mosquitto.Mosquitto("VCONTROL")
lock=Lock()
def on_connect(mosq, userdata, rc):
print "on connect rc=",rc
client.subscribe("/vcontrol/set/TrybPracy",2)
client.will_set("/vcontrol/$online","OFF",0,True)
client.publish("/vcontrol/$online","ON",0,True)
ser=serial.Serial('/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A70379CZ-if00-port0',baudrate=4800,bytesize=8,parity=serial.PARITY_EVEN,stopbits=2,timeout=10,xonxoff=0,rtscts=0,dsrdtr=0)
#ser.open()
ser.flushInput()
ser.read()
def waitForTransmission():
n=ser.read()
#print len(n)
if(len(n)==1):
#print n
c=ord(n[0])
if(c==5):
ser.write('\x01')
return 1
return 0
def getShort(addr):
str='\xF7'+chr(addr//256)+chr(addr%256)+chr(2)
ser.write(str)
s=ser.read(2)
return ord(s[0])+ord(s[1])*256
def getSShort(addr):
ret=getShort(addr)
if(ret>32767):
ret=ret-65536
return ret
def setByte(addr,val):
str='\xF4'+chr(addr//256)+chr(addr%256)+chr(1)+chr(val%256)
ser.write(str)
s=ser.read(1)
return ord(s[0])
def getByte(addr):
str='\xF7'+chr(addr//256)+chr(addr%256)+chr(1)
ser.write(str)
s=ser.read(1)
return ord(s[0])
def getInt(addr):
str='\xF7'+chr(addr//256)+chr(addr%256)+chr(4)
ser.write(str)
s=ser.read(4)
return ord(s[0])+ord(s[1])*256+ord(s[2])*256*256+ord(s[3])*256*256*256
def on_message(mosq, userdata, msg):
print msg.topic, msg.payload
if(msg.topic=="/vcontrol/set/TrybPracy"):
rc=0
lock.acquire()
try:
rc=setByte(0xB000,int(msg.payload))
finally:
lock.release()
print "rc=",rc
client.on_connect=on_connect
client.on_message=on_message
client.connect("127.0.0.1",1883,60)
client.loop_start()
datapoints=[
(0x0101,getSShort,10.0,'Temperatura zewnętrzna ','TempZewnetrzna'),
(0x0116,getShort,10.0,'Temperatura wewnętrzna ','TempWewnetrzna'),
(0x010A,getShort,10.0,'Temperatura zasilania instalacji ','TempZasilania'),
(0x010B,getShort,10.0,'Temperatura bufora ','TempBufora'),
(0x010D,getShort,10.0,'Temperatura ciepłej wody ','TempWody'),
(0x0103,getSShort,10.0,'Temperatura solanki na wejściu ','TempSolankiWe'),
(0x0105,getShort,10.0,'Temperatura wody na zasilaniu ','TempWodyZasilanie'),
(0x0106,getShort,10.0,'Temperatura wody na powrocie ','TempWodyPowrot'),
(0xB000,getByte,1, 'Tryb pracy ','TrybPracy'),
(0x2000,getShort,10.0,'Oczekiwana temperatura pokojowa ','OTempPokojowa'),
(0x2001,getShort,10.0,'Oczekiwana temperatura zredukowana','OTempZredukowana'),
(0x2022,getShort,10.0,'Oczekiwana temperatura party ','OTempParty'),
(0x0400,getByte,1, 'Stan sprężarki ','Sprezarka'),
(0x0402,getByte,1, 'Stan źródła pierwotnego ','ZrodloPierwotne'),
(0x0404,getByte,1, 'Stan źródła wtórnego ','ZrodloWtorne'),
(0x040D,getByte,1, 'Stan obiegu A1 ','ObiegA1'),
(0x0414,getByte,1, 'Stan zaworu 3-dr ','Zawor3Dr'),
]
#(0x2006,getShort,10.0,'Poziom krzywej grzewczej ',''),
#(0x2007,getShort,10.0,'Nachylenie krzywej grzewczej ',''),
vals={}
while(1):
lock.acquire()
rc=0
try:
rc=waitForTransmission()
finally:
lock.release()
if(rc>0):
for x in datapoints:
topic='/vcontrol/'+x[4]
lock.acquire()
value=''
try:
value=str(x[1](x[0])/x[2])
finally:
lock.release()
if len(value)>0:
pub=False
if vals.has_key(topic):
if vals[topic]!=value:
pub=True
else:
pub=True
if pub:
vals[topic]=value
print topic,value
client.publish(topic,value,0,True)