Mercurial > code > home > repos > homeauto

comparison service/bedroomArduino/bedroomArduino.py @ 29:5fef0b7db346

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
bedroomarduino project started. web server isn't ready Ignore-this: 892495965fde1ee17162505d50222f81
author drewp@bigasterisk.com
date Tue, 17 Apr 2012 21:53:19 -0700
parents
children 8e55a6a9c425
comparison
equal deleted inserted replaced
28:97d7c0bb9408 29:5fef0b7db346
1 #!bin/python
2 """
3 talks to bed.pde on an arduino
4 """
5
6 from __future__ import division
7
8 import cyclone.web, json, traceback, os, sys, time, logging
9 from twisted.internet import reactor, task
10 from twisted.web.client import getPage
11 sys.path.append("/my/proj/house/frontdoor")
12 from loggingserial import LoggingSerial
13 sys.path.append("/my/proj/homeauto/lib")
14 from cycloneerr import PrettyErrorHandler
15 from logsetup import log
16
17 sys.path.append("/my/site/magma")
18 from stategraph import StateGraph
19 from rdflib import Namespace
20
21 ROOM = Namespace("http://projects.bigasterisk.com/room/")
22 DEV = Namespace("http://projects.bigasterisk.com/device/")
23
24 class ArduinoBedroom(object):
25 def __init__(self, port='/dev/ttyACM0'):
26 self.ser = LoggingSerial(port=port, baudrate=115200, timeout=1)
27 self.ser.flush()
28
29 def ping(self):
30 self.ser.write("\x60\x00\x00")
31 msg = self.ser.readJson()
32 assert msg == {"ok":True}, msg
33
34 def poll(self):
35 self.ser.write("\x60\x01\x00")
36 ret = self.ser.readJson()
37 return ret
38
39 def setSpeakerChoice(self, pillow):
40 self.ser.write("\x60\x02" + chr(pillow))
41 return self.ser.readJson()
42
43 class Index(PrettyErrorHandler, cyclone.web.RequestHandler):
44 def get(self):
45 """
46 this is an acceptable status check since it makes a round-trip
47 to the arduino before returning success
48 """
49 self.settings.arduino.ping()
50
51 self.set_header("Content-Type", "application/xhtml+xml")
52 self.write(open("index.html").read())
53
54 class SpeakerChoice(PrettyErrorHandler, cyclone.web.RequestHandler):
55 def put(self):
56 ret = self.settings.arduino.setSpeakerChoice(int(self.get_argument('pillow')))
57 self.write(ret)
58
59 class GraphPage(PrettyErrorHandler, cyclone.web.RequestHandler):
60 def get(self):
61 self.set_header("Content-Type", "application/x-trig")
62 g = StateGraph(ROOM['bedroomArduino'])
63 self.settings.poller.assertIsCurrent()
64 g.add((DEV['bedroomMotion'], ROOM['state'],
65 ROOM['motion'] if self.settings.poller.lastValues['motion'] else
66 ROOM['noMotion']))
67 self.write(g.asTrig())
68
69 class Poller(object):
70 """
71 Watches sensor values
72 """
73 def __init__(self, config, ard, period):
74 self.config, self.ard = config, ard
75 self.period = period
76 self.lastValues = None
77 self.lastPollTime = 0
78 self.lastMotion = False
79
80 def assertIsCurrent(self):
81 """raise an error if the poll data is not fresh"""
82 dt = time.time() - self.lastPollTime
83 if dt > period * 2:
84 raise ValueError("last poll time was too old: %.1f sec ago" % dt)
85
86 def poll(self):
87 now = time.time()
88 try:
89 try:
90 newData = ard.poll()
91 except ValueError, e:
92 print e
93 else:
94 print newData
95 return
96 self.lastPollTime = now
97 self.lastValues = newData # for other data besides the blinks
98 self.processMotion(newData['motion'])
99
100 except (IOError, OSError):
101 os.abort()
102 except Exception, e:
103 print "poll error", e
104 traceback.print_exc()
105
106 def processMotion(self, state):
107 if state == self.lastMotion:
108 return
109 self.lastMotion = state
110 msg = json.dumps(dict(board=self.config['boardName'],
111 name="bedroomMotion", state=state))
112 getPage('http://bang.bigasterisk.com:9069/inputChange',
113 method="POST",
114 postdata=msg,
115 headers={'Content-Type' : 'application/json'}
116 ).addErrback(self.reportError, msg)
117
118 def reportError(self, msg, *args):
119 print "post error", msg, args
120
121 if __name__ == '__main__':
122
123 config = { # to be read from a file
124 'arduinoPort': '/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A4001lVK-if00-port0',
125 'servePort' : 9088,
126 'pollFrequency' : 6,
127 'boardName' : 'bedroom', # gets sent with updates
128 }
129
130 from twisted.python import log as twlog
131 #twlog.startLogging(sys.stdout)
132
133 log.setLevel(logging.DEBUG)
134
135 ard = ArduinoBedroom(port=config['arduinoPort'])
136
137 period = 1/config['pollFrequency']
138 p = Poller(config, ard, period)
139 task.LoopingCall(p.poll).start(period)
140
141 reactor.listenTCP(config['servePort'], cyclone.web.Application([
142 (r"/", Index),
143 (r"/graph", GraphPage),
144 (r'/speakerChoice', SpeakerChoice),
145 ], arduino=ard, poller=p))
146 reactor.run()