Mercurial > ~darius > hgwebdir.cgi > beermon.old

comparison Control.py @ 12:9d5b291cfd01

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Add/correct docstrings & comments.
author darius
date Sat, 29 Sep 2007 14:51:20 +0000
parents 483375ca5d10
children f1832dec26e3
comparison
equal deleted inserted replaced
11:4b3d6022e6ea 12:9d5b291cfd01
1 #!/usr/bin/env python 1 #!/usr/bin/env python
2 2
3 ############################################################################ 3 ############################################################################
4 # Control class for beermon 4 # Control class for beermon
5 # 5 #
6 # $Id: Control.py,v 1.1 2007/09/29 14:39:59 darius Exp $ 6 # $Id: Control.py,v 1.2 2007/09/29 14:51:20 darius Exp $
7 # 7 #
8 # Depends on: Python 2.3 (I think) 8 # Depends on: Python 2.3 (I think)
9 # 9 #
10 ############################################################################ 10 ############################################################################
11 # 11 #
49 """This class is responsible for controlling the temperature of 49 """This class is responsible for controlling the temperature of
50 the fermenter by switching the heater & cooler.""" 50 the fermenter by switching the heater & cooler."""
51 staleDataTime = 30 51 staleDataTime = 30
52 52
53 def __init__(self, _log, m, conf): 53 def __init__(self, _log, m, conf):
54 """m is a MonitorDev object, conf is a ConfigParser object""" 54 """m is a MonitorDev object, _log is a logging object, conf is a ConfigParser object"""
55 global log 55 global log
56 log = _log 56 log = _log
57 57
58 self.m = m 58 self.m = m
59 59
63 63
64 log.debug("target temperature - %3.2f" % (self.targetTemp)) 64 log.debug("target temperature - %3.2f" % (self.targetTemp))
65 log.debug("hysteresis - %3.2f" % (self.hysteresis)) 65 log.debug("hysteresis - %3.2f" % (self.hysteresis))
66 log.debug("pollInterval - %d" % (self.pollInterval)) 66 log.debug("pollInterval - %d" % (self.pollInterval))
67 67
68 # We sleep on this, using time.sleep() doesn't work well in a
69 # threaded environment (eg ctrl-c will be blocked until the
70 # timeout expires.)
68 self.cv = threading.Condition() 71 self.cv = threading.Condition()
69 self.cv.acquire() 72 self.cv.acquire()
70 73
71 def doit(self): 74 def doit(self):
72 """Runs forever controlling the temperature until something breaks or interrupted""" 75 """Runs forever controlling the temperature until something breaks or interrupted"""
73 log.debug("=== Starting ===") 76 log.debug("=== Starting ===")
74 log.debug("Fermenter Fridge Ambient State New State") 77 log.debug("Fermenter Fridge Ambient State New State")
75 while True: 78 while True:
76 # Check if our monitor thread has died 79 # Check if the monitor thread has died
77 if (not self.m.isAlive()): 80 if (not self.m.isAlive()):
78 raise ThreadDied, "Monitor thread has died" 81 raise ThreadDied, "Monitor thread has died"
79 82
80 # Check for stale data 83 # Check for stale data
81 if (self.m.lastUpdate[self.m.fermenterId] + self.staleDataTime < time.time()): 84 if (self.m.lastUpdate[self.m.fermenterId] + self.staleDataTime < time.time()):