Mercurial > templog

comparison py/sensor_ds18b20.py @ 151:e114b38c8a55

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internal temperature sensor
author Matt Johnston <matt@ucc.asn.au>
date Thu, 20 Dec 2012 22:24:42 +0800
parents d686b111dab4
children d03157c7ad60
comparison
equal deleted inserted replaced
149:d686b111dab4 151:e114b38c8a55
16 def __init__(self, server): 16 def __init__(self, server):
17 gevent.Greenlet.__init__(self) 17 gevent.Greenlet.__init__(self)
18 self.server = server 18 self.server = server
19 self.readthread = gevent.threadpool.ThreadPool(1) 19 self.readthread = gevent.threadpool.ThreadPool(1)
20 self.master_dir = config.SENSOR_BASE_DIR 20 self.master_dir = config.SENSOR_BASE_DIR
21
22 def do(self):
23 vals = {}
24 for n in self.sensor_names():
25 value = self.do_sensor(n)
26 if value is not None:
27 vals[n] = value
28
29 itemp = self.do_internal()
30 if itemp:
31 vals['internal'] = itemp
32
33 self.server.add_reading(vals)
21 34
22 def _run(self): 35 def _run(self):
23 while True: 36 while True:
24 self.do() 37 self.do()
25 gevent.sleep(config.SENSOR_SLEEP) 38 gevent.sleep(config.SENSOR_SLEEP)
50 return temp 63 return temp
51 except Exception, e: 64 except Exception, e:
52 EX("Problem reading sensor '%s': %s" % (s, str(e))) 65 EX("Problem reading sensor '%s': %s" % (s, str(e)))
53 return None 66 return None
54 67
55 def do(self): 68 def do_internal(self):
56 vals = {} 69 try:
57 for n in self.sensor_names(): 70 return int(open(config.INTERNAL_TEMPERATURE, 'r').read()) / 1000.0
58 value = self.do_sensor(n) 71 except Exception, e:
59 if value is not None: 72 EX("Problem reading internal sensor: %s" % str(e))
60 vals[n] = value 73 return None
61 74
62 self.server.add_reading(vals)
63 75
64 def sensor_names(self): 76 def sensor_names(self):
65 """ Returns a sequence of sensorname """ 77 """ Returns a sequence of sensorname """
66 slaves_path = os.path.join(self.master_dir, "w1_master_slaves") 78 slaves_path = os.path.join(self.master_dir, "w1_master_slaves")
67 names = open(slaves_path, 'r').read().split() 79 names = open(slaves_path, 'r').read().split()