Mercurial > templog
annotate py/tempserver.py @ 151:e114b38c8a55
internal temperature sensor
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Thu, 20 Dec 2012 22:24:42 +0800 |
| parents | d686b111dab4 |
| children | d03157c7ad60 |
| rev | line source |
|---|---|
| 148 | 1 #!/home/matt/templog/venv/bin/python |
| 141 | 2 |
| 3 import sys | |
| 4 import os | |
|
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5 import logging |
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6 |
| 141 | 7 import gevent |
| 145 | 8 import gevent.monkey |
| 141 | 9 |
| 10 import utils | |
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11 from utils import L,D,EX,W |
| 145 | 12 import fridge |
| 13 import config | |
| 14 import sensor_ds18b20 | |
| 15 import params | |
| 16 | |
| 141 | 17 |
| 18 class Tempserver(object): | |
| 19 def __init__(self): | |
| 20 self.readings = [] | |
| 145 | 21 self.current = (None, None) |
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22 self.fridge = None |
| 145 | 23 |
| 24 # don't patch os, fork() is used by daemonize | |
| 25 gevent.monkey.patch_all(os=False, thread=False) | |
| 141 | 26 |
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27 def __enter__(self): |
| 145 | 28 self.params = params.Params() |
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29 self.fridge = fridge.Fridge(self) |
| 145 | 30 self.params.load() |
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31 self.set_sensors(sensor_ds18b20.DS18B20s(self)) |
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32 return self |
| 141 | 33 |
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34 def __exit__(self, exc_type, exc_value, traceback): |
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35 L("Exiting, cleanup handler"); |
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36 self.fridge.off() |
| 141 | 37 |
| 145 | 38 def run(self): |
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39 |
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40 if self.fridge is None: |
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41 raise Exception("Tempserver.run() must be within 'with Tempserver() as server'") |
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parents:
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42 |
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43 # XXX do these go here or in __enter_() ? |
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44 self.start_time = self.now() |
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45 self.fridge.start() |
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46 self.sensors.start() |
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d686b111dab4
working better. logging works properly, cleanup fridge.off() happens.
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parents:
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diff
changeset
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47 |
| 145 | 48 # won't return. |
| 49 while True: | |
| 50 gevent.sleep(60) | |
| 51 | |
| 52 def now(self): | |
| 53 return utils.monotonic_time() | |
| 54 | |
| 144 | 55 def set_sensors(self, sensors): |
| 148 | 56 if hasattr(self, 'sensors'): |
| 144 | 57 self.sensors.kill() |
| 58 self.sensors = sensors | |
| 59 self.wort_name = sensors.wort_name() | |
| 60 self.fridge_name = sensors.fridge_name() | |
| 141 | 61 |
| 62 def take_readings(self): | |
| 63 ret = self.readings | |
| 64 self.readings = [] | |
| 65 return ret | |
| 66 | |
| 67 def pushfront(self, readings): | |
| 68 """ used if a caller of take_readings() fails """ | |
| 69 self.readings = pushback + self.readings | |
| 70 | |
| 144 | 71 # a reading is a map of {sensorname: value}. temperatures |
| 72 # are float degrees | |
| 141 | 73 def add_reading(self, reading): |
| 74 """ adds a reading at the current time """ | |
| 145 | 75 self.readings.append( (reading, self.now())) |
| 144 | 76 self.current = (reading.get(self.wort_name, None), |
| 77 reading.get(self.fridge_name, None)) | |
| 141 | 78 |
| 79 def current_temps(self): | |
| 144 | 80 """ returns (wort_temp, fridge_temp) tuple """ |
| 148 | 81 return self.current |
| 145 | 82 |
| 83 def setup_logging(): | |
| 84 logging.basicConfig(format='%(asctime)s %(message)s', | |
| 85 datefmt='%m/%d/%Y %I:%M:%S %p', | |
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86 level=logging.DEBUG) |
| 145 | 87 |
| 88 def main(): | |
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parents:
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89 setup_logging() |
| 145 | 90 |
| 91 if '--daemon' in sys.argv: | |
| 92 utils.cheap_daemon() | |
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working better. logging works properly, cleanup fridge.off() happens.
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parents:
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93 with Tempserver() as server: |
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d686b111dab4
working better. logging works properly, cleanup fridge.off() happens.
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parents:
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94 server.run() |
| 145 | 95 |
| 96 if __name__ == '__main__': | |
| 97 main() |