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annotate service/garageArduino/garageArduino.py @ 44:55b68d1e8212

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opening usb apparently causes an arduino restart now, so i have to wait for that to pass before beginning communications Ignore-this: 9f34e8914c6bbe3fb54b2c8f5ed01804
author drewp@bigasterisk.com
date Sat, 29 Dec 2012 04:54:54 -0800
parents 62b3bb861e35
children 69b214997213
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1 #!bin/python
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2 """
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3 talks to frontdoordriver.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, bitstring
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9 from twisted.internet import reactor, task, defer
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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 sys.path.append("../../../room")
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17 from carbondata import CarbonClient
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18 sys.path.append("/my/site/magma")
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19 from stategraph import StateGraph
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20 from rdflib import Namespace, RDF, Literal
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21 from webcolors import hex_to_rgb, rgb_to_hex
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22
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23 def rgbFromHex(h):
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24 """returns tuple of 0..1023"""
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25 norm = hex_to_rgb(h)
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26 return tuple([x * 4 for x in norm])
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27
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28 def hexFromRgb(rgb):
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29 return rgb_to_hex(tuple([x // 4 for x in rgb]))
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30
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31
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32 ROOM = Namespace("http://projects.bigasterisk.com/room/")
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33 DEV = Namespace("http://projects.bigasterisk.com/device/")
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34
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35 class ArduinoGarage(object):
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36 def __init__(self, port='/dev/ttyACM0'):
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37 self.ser = LoggingSerial(port=port, baudrate=115200, timeout=1)
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38 time.sleep(2) # wait for a arduino reset to pass
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39 self.ser.flush()
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40 self.ping()
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41
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42 def ping(self):
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43 self.ser.write("\x60\x00\x00")
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44 msg = self.ser.readJson()
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45 assert msg == {"ok":True}, msg
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46
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47 def poll(self):
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48 self.ser.write("\x60\x01\x00")
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49 ret = self.ser.readJson()
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50 return ret
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51
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52 def lastLevel(self):
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53 self.ser.write("\x60\x02\x00")
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54 return self.ser.readJson()['z']
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55
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56 def setThreshold(self, t):
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57 """set 10-bit threshold"""
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58 self.ser.write("\x60\x03"+chr(max(1 << 2, t) >> 2))
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59 return self.ser.readJson()['threshold']
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60
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61 def setGarage(self, level):
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62 """set garage door opener pin"""
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63 self.ser.write("\x60\x04"+chr(int(bool(level))))
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64 return self.ser.readJson()['garage']
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65
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66 def setVideoSelect(self, chan):
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67 """set video select bits from 0..3"""
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68 self.ser.write("\x60\x05"+chr(chan))
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69 return self.ser.readJson()['videoSelect']
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70
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71 def shiftbrite(self, colors):
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72 """
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73 shift out this sequence of (r,g,b) triples of 10-bit ints
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74 """
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75 resetCurrent = "".join(bitstring.pack("0b01, uint:10, uint:10, uint:10",
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76 127, 127, 127).bytes
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77 for loop in range(len(colors)))
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78 out = "".join(bitstring.pack("0b00, uint:10, uint:10, uint:10",
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79 b, r, g).bytes
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80 for r,g,b in colors)
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81 out = resetCurrent + out
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82 self.ser.write("\x60\x06" + chr(len(out)) + out)
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83 msg = self.ser.readJson()
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84 assert msg == {"ok":1}, msg
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85
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86 class Index(PrettyErrorHandler, cyclone.web.RequestHandler):
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87 def get(self):
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88 """
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89 this is an acceptable status check since it makes a round-trip
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90 to the arduino before returning success
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91 """
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92 self.settings.arduino.ping()
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93
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94 self.set_header("Content-Type", "application/xhtml+xml")
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95 self.write(open("index.html").read())
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96
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97 class GraphPage(PrettyErrorHandler, cyclone.web.RequestHandler):
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98 def get(self):
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99 self.set_header("Content-Type", "application/x-trig")
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100 g = StateGraph(ROOM['garageArduino'])
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101 self.settings.poller.assertIsCurrent()
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102 g.add((DEV['frontDoorMotion'], ROOM['state'],
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103 ROOM['motion'] if self.settings.poller.lastValues['motion'] else
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104 ROOM['noMotion']))
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105 g.add((ROOM['house'], ROOM['usingPower'],
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106 Literal(self.settings.poller.lastWatts, datatype=ROOM["#watts"])))
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107 self.write(g.asTrig())
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108
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109 class FrontDoorMotion(PrettyErrorHandler, cyclone.web.RequestHandler):
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110 def get(self):
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111 self.set_header("Content-Type", "application/javascript")
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112 self.settings.poller.assertIsCurrent()
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113 self.write(json.dumps({"frontDoorMotion" :
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114 self.settings.poller.lastValues['motion']}))
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115
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116 class HousePower(PrettyErrorHandler, cyclone.web.RequestHandler):
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117 def get(self):
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118 self.set_header("Content-Type", "application/javascript")
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119 self.settings.poller.assertIsCurrent()
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120 w = self.settings.poller
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121 self.write(json.dumps({
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122 "currentWatts" : round(w.lastWatts, 2) if isinstance(w.lastWatts, float) else w.lastWatts,
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123 "lastPulseAgo" : "%.1f sec ago" % (time.time() - w.lastBlinkTime) if w.lastBlinkTime is not None else "unknown",
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124 "kwhPerBlink" : w.kwhPerBlink}))
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125
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126 class HousePowerRaw(PrettyErrorHandler, cyclone.web.RequestHandler):
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127 """
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128 raw data from the analog sensor, for plotting or picking a noise threshold
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129 """
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130 def get(self):
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131 self.set_header("Content-Type", "application/javascript")
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132 pts = []
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133 for i in range(60):
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134 level = self.settings.arduino.lastLevel()
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135 pts.append((round(time.time(), 3), level))
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136
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137 self.write(json.dumps({"irLevels" : pts}))
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138
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139 class HousePowerThreshold(PrettyErrorHandler, cyclone.web.RequestHandler):
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140 """
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141 the level that's between between an IR pulse and the noise
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142 """
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143 def get(self):
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144 self.set_header("Content-Type", "application/javascript")
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145 self.settings.poller.assertIsCurrent()
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146 self.write(json.dumps({"threshold" : thr}))
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147
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148 def put(self):
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149 pass
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150
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151 class GarageDoorOpen(PrettyErrorHandler, cyclone.web.RequestHandler):
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152 def post(self):
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153 self.set_header("Content-Type", "text/plain")
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154 self.settings.arduino.setGarage(True)
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155 self.write("pin high, waiting..\n")
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156 self.flush()
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157 d = defer.Deferred()
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158 def finish():
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159 self.settings.arduino.setGarage(False)
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160 self.write("pin low. Done")
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161 d.callback(None)
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162 reactor.callLater(1.5, finish) # this time depends on the LP circuit
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163 return d
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164
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165 class VideoSelect(PrettyErrorHandler, cyclone.web.RequestHandler):
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166 def post(self):
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167 self.set_header("Content-Type", "application/javascript")
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168 v = self.settings.arduino.setVideoSelect(int(self.request.body))
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169 self.write(json.dumps({"videoSelect" : v}))
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170
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171 class Brite(PrettyErrorHandler, cyclone.web.RequestHandler):
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172 def get(self, chan):
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173 self.set_header("Content-Type", "text/plain")
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174 self.write(hexFromRgb(self.settings.colors[int(chan)]))
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175
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176 def put(self, chan):
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177 s = self.settings
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178 s.colors[int(chan)] = rgbFromHex(self.request.body)
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179 s.arduino.shiftbrite(s.colors)
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180 post = put
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181
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182 class Application(cyclone.web.Application):
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183 def __init__(self, ard, poller):
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184 handlers = [
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185 (r"/", Index),
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186 (r"/graph", GraphPage),
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187 (r"/frontDoorMotion", FrontDoorMotion),
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188 (r'/housePower', HousePower),
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189 (r'/housePower/raw', HousePowerRaw),
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190 (r'/housePower/threshold', HousePowerThreshold),
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191 (r'/garageDoorOpen', GarageDoorOpen),
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192 (r'/videoSelect', VideoSelect),
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193 (r"/brite/(\d+)", Brite),
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194 ]
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195 colors = [(0,0,0)] * 1 # stored 10-bit
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196 settings = {"arduino" : ard, "poller" : poller, "colors" : colors}
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197 cyclone.web.Application.__init__(self, handlers, **settings)
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198
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199 class Poller(object):
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200 """
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201 times the blinks to estimate power usage. Captures the other
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202 returned sensor values too in self.lastValues
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203 """
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204 def __init__(self, ard, period):
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205 self.ard = ard
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206 self.period = period
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207 self.carbon = CarbonClient(serverHost='bang')
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208 self.lastBlinkTime = None
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209 self.lastValues = None
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210 self.lastPollTime = 0
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211 self.lastWatts = "(just restarted; wait no data yet)"
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212 self.kwhPerBlink = 1.0 # unsure
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213 self.lastMotion = False
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214
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215 def assertIsCurrent(self):
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216 """raise an error if the poll data is not fresh"""
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217 dt = time.time() - self.lastPollTime
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218 if dt > period * 2:
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219 raise ValueError("last poll time was too old: %.1f sec ago" % dt)
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220
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221 def poll(self):
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222 now = time.time()
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223 try:
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224 try:
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225 newData = ard.poll()
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226 except ValueError, e:
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227 print e
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228 os.abort()
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229 else:
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230 self.lastPollTime = now
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231 self.lastValues = newData # for other data besides the blinks
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232 self.processBlinks(now, newData['newBlinks'])
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233 self.processMotion(newData['motion'])
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234
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235 except (IOError, OSError):
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236 os.abort()
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237 except Exception, e:
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238 print "poll error", e
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239 traceback.print_exc()
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240
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241 def processBlinks(self, now, b):
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242 if b > 0:
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243 if b > 1:
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244 # todo: if it's like 1,1,2,2,2,2,1,1 then we
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245 # need to subdivide those inner sample periods
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246 # since there might really be two blinks. But
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247 # if it's like 0,0,0,2,0,0, that should be
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248 # treated like b=1 since it's probably noise
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249 pass
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250
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251 if self.lastBlinkTime is not None:
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252 dt = now - self.lastBlinkTime
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253 dth = dt / 3600.
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254 watts = self.kwhPerBlink / dth
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255
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256 if watts > 10000:
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257 # this pulse (or the previous one) is
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258 # likely noise. Too late for the previous
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259 # one, but we're going to skip this one
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260 return
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261 else:
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262 self.lastWatts = watts
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263
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264 # todo: remove this; a separate logger shall do it
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265 self.carbon.send('system.house.powerMeter_w', watts, now)
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266
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267 self.lastBlinkTime = now
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268
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269 def processMotion(self, state):
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270 if state == self.lastMotion:
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271 return
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272 self.lastMotion = state
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273 msg = json.dumps(dict(board='garage',
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274 name="frontDoorMotion", state=state))
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275 getPage('http://bang.bigasterisk.com:9069/inputChange',
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276 method="POST",
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277 postdata=msg,
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278 headers={'Content-Type' : 'application/json'}
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279 ).addErrback(self.reportError, msg)
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280
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281 def reportError(self, msg, *args):
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282 print "post error", msg, args
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283
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284 if __name__ == '__main__':
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285
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286 config = { # to be read from a file
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287 'arduinoPort': '/dev/serial/by-id/usb-Arduino__www.arduino.cc__Arduino_Uno_6493534323335161A2F1-if00',
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288 'servePort' : 9050,
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289 'pollFrequency' : 5,
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290 'boardName' : 'garage', # gets sent with updates
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291 }
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292
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293 #from twisted.python import log as twlog
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294 #twlog.startLogging(sys.stdout)
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295
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296 log.setLevel(logging.DEBUG)
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297
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298 ard = ArduinoGarage(port=config['arduinoPort'])
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299
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300 period = 1/config['pollFrequency']
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301 p = Poller(ard, period)
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302 task.LoopingCall(p.poll).start(period)
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303 reactor.listenTCP(config['servePort'], Application(ard, p))
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304 reactor.run()