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157
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1 from __future__ import division
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2 import serial, struct, json, sys
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3
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4 from rdflib import Namespace, Literal
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5 sys.path.append("/my/site/magma")
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6 from stategraph import StateGraph
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7 import klein
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8 from twisted.internet import task
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9 import random, time
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10
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11 import restkit
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12 reasoning = restkit.Resource("http://bang:9071/", timeout=1)
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13 ROOM = Namespace("http://projects.bigasterisk.com/room/")
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14
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15 def sendOneShot(stmt):
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16 try:
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17 t1 = time.time()
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18 print "post to reasoning", stmt
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19 p = reasoning.post("oneShot",
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20 headers={"content-type": "text/n3"},
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21 payload=("%s %s %s ." %
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22 tuple(n.n3() for n in stmt)))
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23 except restkit.errors.RequestFailed:
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24 print "oneShot failed"
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25 return
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26 print "posted in %.04f sec. %r" % (time.time() - t1,
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27 p.body_string())
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28
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29
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30 class Busybox(object):
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31 def __init__(self, port='/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A4001lVK-if00-port0'):
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32 self.serial = serial.Serial(port, baudrate=115200, timeout=.2)
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33
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34 def poll(self):
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35 for tries in range(5):
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36 self.serial.write('\x60\x00')
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37 line = self.serial.readline()
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38 if not line.startswith('{'):
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39 continue
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40 if tries > 0:
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41 print "after %s tries" % tries
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42 return json.loads(line)
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43 return {'error': 'invalid response'}
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44
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45 def writeMessage(self, row, col, text):
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46 msg = struct.pack('BBBBB', 0x60, 0x01, row, col, len(text)) + text
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47 self.serial.write(msg)
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48
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49 def setBacklight(self, level):
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50 self.serial.write(struct.pack('BBB', 0x60, 0x02, level))
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51
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52 sendOneShot((ROOM['greets'],
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53 ROOM['change'],
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54 ROOM['down']))
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55
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56 bb = Busybox()
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57 words = open('/usr/share/dict/words').readlines()
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58
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59 lastWordTime = 0
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60 last = None
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61 s1 = []
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62
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63 def poll():
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64 global lastWordTime, s1, last
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65 now = time.time()
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66 if now - lastWordTime > 1:
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67 msg = '%15s' % random.choice(words).strip()[:15]
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68 bb.writeMessage(1, 1, msg)
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69 lastWordTime = now
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70 last = bb.poll()
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71 if 'slider1' in last:
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72 s1 = s1[-5:] + [last['slider1']]
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73 if len(s1) > 4:
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74 median = sorted(s1)[2]
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75 bb.setBacklight(min(255, median // 4))
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76 if 'keyDown' in last:
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77 keyNum = last['keyDown']
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78 sendOneShot((ROOM['ariBed/button%s' % keyNum],
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79 ROOM['change'],
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80 ROOM['down']))
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81
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82
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83 @klein.route('/graph', methods=['GET'])
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84 def getGraph(request):
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85 g = StateGraph(ROOM.busybox)
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86 g.add((ROOM.busybox, ROOM.localHour, Literal('x')))
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87 for attr in ['slider1', 'slider2', 'slider3', 'slider4']:
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88 # needs: smoothing, exp curve correction
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89 g.add((ROOM['busybox/%s' % attr], ROOM.value, Literal(round(last[attr] / 1021, 3))))
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90 request.setHeader('Content-type', 'application/x-trig')
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91 return g.asTrig()
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92
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93 task.LoopingCall(poll).start(.05)
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94
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95 klein.run('0.0.0.0', port=9056)
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96
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