1w.py

#!/usr/bin/env python

# This file is part of Openplotter.
# Copyright (C) 2015 by sailoog <https://github.com/sailoog/openplotter>
#
# Openplotter is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# any later version.
# Openplotter is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Openplotter. If not, see <http://www.gnu.org/licenses/>.

import socket, pynmea2, time
from w1thermsensor import W1ThermSensor
from classes.conf import Conf

conf=Conf()

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

sensors_list=eval(conf.get('1W', 'DS18B20'))

sensors=[]
for index,item in enumerate(sensors_list):
	try:
		type=W1ThermSensor.THERM_SENSOR_DS18B20
		for sensor in W1ThermSensor.get_available_sensors():
			if item[3] == sensor.id:
				type = sensor.type
		
		sensors.append(W1ThermSensor(type, item[3]))
	except Exception,e: 
		sensors_list[index][5]='0'
		print str(e)

while True:
	time.sleep(0.01)
	temp=''
	list_tmp=[]	
	ib=0
	c=0
	try:
		for i in sensors_list:
			if i[5]=='1':
 				if i[2]=='C': unit=W1ThermSensor.DEGREES_C
				if i[2]=='F': unit=W1ThermSensor.DEGREES_F
				if i[2]=='K': unit=W1ThermSensor.KELVIN
				temp=sensors[ib].get_temperature(unit)
			
				temp=round(temp,1)
				list_tmp.append('C')
				list_tmp.append(str(temp))
				list_tmp.append(i[2])
				list_tmp.append(i[4])
				ib=ib+1
				c=c+1
				if c==3:
					xdr = pynmea2.XDR('OS', 'XDR', (list_tmp))
					xdr1=str(xdr)
					xdr2=xdr1+"\r\n"
					sock.sendto(xdr2, ('127.0.0.1', 10110))
					list_tmp=[]
					c=0
		if c>0:
			xdr = pynmea2.XDR('OS', 'XDR', (list_tmp))
			xdr1=str(xdr)
			xdr2=xdr1+"\r\n"
			sock.sendto(xdr2, ('127.0.0.1', 10110))

	except Exception,e: print str(e)