Mercurial > code > home > repos > homeauto
annotate service/theaterArduino/theaterArduino.py @ 809:bebb8f7c5a3e
move a bunch of services into this tree, give them all web status pages
Ignore-this: a11e90f9d2cd9470565c743f54943c4b
darcs-hash:20110808073131-312f9-a7f420d66388cedae458276d672a27a9249f1e2f.gz
author | drewp <drewp@bigasterisk.com> |
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date | Mon, 08 Aug 2011 00:31:31 -0700 |
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children | 84af13435de7 |
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809
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1 """ |
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2 arduino example sketches, 'StandardFirmata'. |
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3 |
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4 ####easy_install http://github.com/lupeke/python-firmata/tarball/master |
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5 |
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6 Now using http://code.google.com/p/pyduino, modified to run at 57600 |
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7 baud like my arduino's code does. pyduino is better than the lupeke |
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8 one in that you can read your settings off the output pins |
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9 |
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10 Note that there are some startup delays and you may not hear about |
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11 input changes for a few seconds. |
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12 """ |
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13 from __future__ import division |
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14 import sys, cyclone.web, time, simplejson, os |
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15 from twisted.web.client import getPage |
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16 from twisted.internet import reactor, task |
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17 |
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18 sys.path.append("/my/proj/homeauto/lib") |
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19 from cycloneerr import PrettyErrorHandler |
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20 from logsetup import log |
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21 |
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22 sys.path.append("pyduino-read-only") |
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23 import pyduino |
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24 |
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25 def _num(name): |
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26 if name.startswith('d'): |
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27 return int(name[1:]) |
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28 raise ValueError(name) |
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29 |
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30 class pin(PrettyErrorHandler, cyclone.web.RequestHandler): |
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31 def get(self, name): |
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32 self.set_header("Content-Type", "text/plain") |
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33 arduino = self.settings.arduino |
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34 arduino.iterate() |
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35 self.write(str(int(arduino.digital[_num(name)].read()))) |
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36 |
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37 def put(self, name): |
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38 t1 = time.time() |
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39 self.settings.arduino.digital[_num(name)].write(int(self.request.body)) |
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40 log.debug("arduino write in %.1f ms" % (1000 * (time.time() - t1))) |
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41 |
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42 |
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43 class pinMode(PrettyErrorHandler, cyclone.web.RequestHandler): |
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44 def get(self, name): |
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45 self.set_header("Content-Type", "text/plain") |
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46 mode = self.settings.arduino.digital[_num(name)].get_mode() |
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47 self.write({pyduino.DIGITAL_INPUT : "input", |
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48 pyduino.DIGITAL_OUTPUT : "output"}[mode]) |
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49 |
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50 def put(self, name): |
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51 mode = { |
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52 "input" : pyduino.DIGITAL_INPUT, |
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53 "output" : pyduino.DIGITAL_OUTPUT}[self.request.body.strip()] |
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54 self.settings.arduino.digital[_num(name)].set_mode(mode) |
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55 |
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56 class Pid(PrettyErrorHandler, cyclone.web.RequestHandler): |
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57 def get(self): |
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58 self.set_header("Content-Type", "text/plain") |
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59 self.write(str(os.getpid())) |
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60 |
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61 class index(PrettyErrorHandler, cyclone.web.RequestHandler): |
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62 def get(self): |
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63 """ |
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64 this is a suitable status check; it does a round-trip to arduino |
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65 """ |
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66 # this would be a good ping() call for pyduino |
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67 self.settings.arduino.sp.write(chr(pyduino.REPORT_VERSION)) |
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68 self.settings.arduino.iterate() |
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69 |
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70 self.set_header("Content-Type", "application/xhtml+xml") |
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71 self.write(open('index.html').read()) |
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72 |
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73 class Application(cyclone.web.Application): |
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74 def __init__(self, arduino): |
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75 handlers = [ |
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76 (r"/", index), |
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77 (r'/pin/(.*)/mode', pinMode), |
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78 (r'/pin/(.*)', pin), |
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79 (r'/pid', Pid), |
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80 # web refresh could benefit a lot from a json resource that |
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81 # gives all the state |
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82 ] |
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83 settings = {"arduino" : arduino,} |
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84 cyclone.web.Application.__init__(self, handlers, **settings) |
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85 |
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86 class WatchPins(object): |
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87 def __init__(self, arduino, conf): |
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88 self.arduino, self.conf = arduino, conf |
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89 self.lastState = {} |
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90 self.pins = conf['watchPins'] |
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91 if self.pins == 'allInput': |
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92 self.watchAllInputs() |
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93 for pin in self.pins: |
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94 arduino.digital_ports[pin >> 3].set_active(1) |
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95 arduino.digital[pin].set_mode(pyduino.DIGITAL_INPUT) |
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96 |
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97 def watchAllInputs(self): |
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98 raise NotImplementedError("this needs to be updated whenever the modes change") |
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99 self.pins = [p for p in range(2, 13+1) if |
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100 self.arduino.digital[p].get_mode() == |
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101 pyduino.DIGITAL_INPUT] |
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102 |
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103 def reportPostError(self, fail, pin, value, url): |
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104 log.error("failed to send pin %s update (now %s) to %r: %r" % (pin, value, url, fail)) |
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105 |
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106 def poll(self): |
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107 try: |
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108 self._poll() |
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109 except Exception, e: |
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110 log.error("during poll:", exc_info=1) |
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111 |
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112 def _poll(self): |
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113 # this can IndexError for a port number being out of |
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114 # range. I'm not sure how- maybe error data coming in the |
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115 # port? |
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116 arduino.iterate() |
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117 for pin in self.pins: |
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118 current = arduino.digital[pin].read() |
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119 if current != self.lastState.get(pin, None): |
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120 d = getPage( |
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121 self.conf['post'], |
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122 method="POST", |
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123 postdata=simplejson.dumps(dict(board=self.conf['boardName'], pin=pin, level=int(current))), |
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124 headers={'Content-Type' : 'application/json'}) |
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125 d.addErrback(self.reportPostError, pin, current, self.conf['post']) |
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126 |
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127 self.lastState[pin] = current |
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128 |
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129 if __name__ == '__main__': |
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130 |
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131 config = { # to be read from a file |
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132 'arduinoPort': '/dev/ttyUSB0', |
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133 'servePort' : 9056, |
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134 'pollFrequency' : 20, |
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135 'post' : 'http://bang:9069/pinChange', |
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136 'boardName' : 'theater', # gets sent with updates |
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137 'watchPins' : [9, 10], # or 'allInput' (not yet working) |
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138 # todo: need options to preset inputs/outputs at startup |
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139 } |
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140 |
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141 arduino = pyduino.Arduino(config['arduinoPort']) |
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142 wp = WatchPins(arduino, config) |
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143 task.LoopingCall(wp.poll).start(1/config['pollFrequency']) |
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144 reactor.listenTCP(config['servePort'], Application(arduino)) |
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145 reactor.run() |