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annotate service/bedroomArduino/bedroomArduino.py @ 834:a87cae710556

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bedroomarduino project started. web server isn't ready Ignore-this: 892495965fde1ee17162505d50222f81 darcs-hash:20120418045319-312f9-fa3fc17f9d94881c257ebee128ca5d8623cb4d94.gz
author drewp <drewp@bigasterisk.com>
date Tue, 17 Apr 2012 21:53:19 -0700
parents
children 8e55a6a9c425
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
834
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1 #!bin/python
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2 """
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3 talks to bed.pde on an arduino
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4 """
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5
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6 from __future__ import division
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7
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8 import cyclone.web, json, traceback, os, sys, time, logging
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9 from twisted.internet import reactor, task
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10 from twisted.web.client import getPage
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11 sys.path.append("/my/proj/house/frontdoor")
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12 from loggingserial import LoggingSerial
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13 sys.path.append("/my/proj/homeauto/lib")
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14 from cycloneerr import PrettyErrorHandler
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15 from logsetup import log
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16
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17 sys.path.append("/my/site/magma")
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18 from stategraph import StateGraph
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19 from rdflib import Namespace
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20
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21 ROOM = Namespace("http://projects.bigasterisk.com/room/")
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22 DEV = Namespace("http://projects.bigasterisk.com/device/")
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23
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24 class ArduinoBedroom(object):
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25 def __init__(self, port='/dev/ttyACM0'):
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26 self.ser = LoggingSerial(port=port, baudrate=115200, timeout=1)
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27 self.ser.flush()
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28
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29 def ping(self):
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30 self.ser.write("\x60\x00\x00")
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31 msg = self.ser.readJson()
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32 assert msg == {"ok":True}, msg
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33
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34 def poll(self):
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35 self.ser.write("\x60\x01\x00")
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36 ret = self.ser.readJson()
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37 return ret
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38
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39 def setSpeakerChoice(self, pillow):
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40 self.ser.write("\x60\x02" + chr(pillow))
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41 return self.ser.readJson()
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42
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43 class Index(PrettyErrorHandler, cyclone.web.RequestHandler):
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44 def get(self):
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45 """
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46 this is an acceptable status check since it makes a round-trip
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47 to the arduino before returning success
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48 """
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49 self.settings.arduino.ping()
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50
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51 self.set_header("Content-Type", "application/xhtml+xml")
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52 self.write(open("index.html").read())
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53
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54 class SpeakerChoice(PrettyErrorHandler, cyclone.web.RequestHandler):
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55 def put(self):
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56 ret = self.settings.arduino.setSpeakerChoice(int(self.get_argument('pillow')))
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57 self.write(ret)
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58
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59 class GraphPage(PrettyErrorHandler, cyclone.web.RequestHandler):
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60 def get(self):
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61 self.set_header("Content-Type", "application/x-trig")
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62 g = StateGraph(ROOM['bedroomArduino'])
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63 self.settings.poller.assertIsCurrent()
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64 g.add((DEV['bedroomMotion'], ROOM['state'],
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65 ROOM['motion'] if self.settings.poller.lastValues['motion'] else
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66 ROOM['noMotion']))
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67 self.write(g.asTrig())
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68
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69 class Poller(object):
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70 """
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71 Watches sensor values
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72 """
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73 def __init__(self, config, ard, period):
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74 self.config, self.ard = config, ard
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75 self.period = period
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76 self.lastValues = None
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77 self.lastPollTime = 0
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78 self.lastMotion = False
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79
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80 def assertIsCurrent(self):
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81 """raise an error if the poll data is not fresh"""
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82 dt = time.time() - self.lastPollTime
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83 if dt > period * 2:
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84 raise ValueError("last poll time was too old: %.1f sec ago" % dt)
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85
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86 def poll(self):
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87 now = time.time()
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88 try:
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89 try:
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90 newData = ard.poll()
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91 except ValueError, e:
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92 print e
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93 else:
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94 print newData
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95 return
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96 self.lastPollTime = now
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97 self.lastValues = newData # for other data besides the blinks
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98 self.processMotion(newData['motion'])
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99
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100 except (IOError, OSError):
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101 os.abort()
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102 except Exception, e:
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103 print "poll error", e
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104 traceback.print_exc()
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105
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106 def processMotion(self, state):
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107 if state == self.lastMotion:
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108 return
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109 self.lastMotion = state
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110 msg = json.dumps(dict(board=self.config['boardName'],
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111 name="bedroomMotion", state=state))
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112 getPage('http://bang.bigasterisk.com:9069/inputChange',
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113 method="POST",
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114 postdata=msg,
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115 headers={'Content-Type' : 'application/json'}
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116 ).addErrback(self.reportError, msg)
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117
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118 def reportError(self, msg, *args):
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119 print "post error", msg, args
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120
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121 if __name__ == '__main__':
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122
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123 config = { # to be read from a file
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124 'arduinoPort': '/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A4001lVK-if00-port0',
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125 'servePort' : 9088,
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126 'pollFrequency' : 6,
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127 'boardName' : 'bedroom', # gets sent with updates
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128 }
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129
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130 from twisted.python import log as twlog
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131 #twlog.startLogging(sys.stdout)
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132
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133 log.setLevel(logging.DEBUG)
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134
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135 ard = ArduinoBedroom(port=config['arduinoPort'])
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136
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137 period = 1/config['pollFrequency']
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138 p = Poller(config, ard, period)
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139 task.LoopingCall(p.poll).start(period)
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140
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141 reactor.listenTCP(config['servePort'], cyclone.web.Application([
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142 (r"/", Index),
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143 (r"/graph", GraphPage),
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144 (r'/speakerChoice', SpeakerChoice),
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145 ], arduino=ard, poller=p))
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146 reactor.run()