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327
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1 #!/usr/bin/env python
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2
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3 # Read lirc output, in order to sense key presses on an IR remote.
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4 # There are various Python packages that claim to do this but
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5 # they tend to require elaborate setup and I couldn't get any to work.
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6 # This approach requires a lircd.conf but does not require a lircrc.
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7 # If irw works, then in theory, this should too.
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8 # Based on irw.c, https://github.com/aldebaran/lirc/blob/master/tools/irw.c
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9
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10
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11 import socket
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12 import logging
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13 import requests
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14 from rdflib import Graph, Namespace
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15
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16 ROOM = Namespace("http://projects.bigasterisk.com/room/")
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17 SOCKPATH = "/var/run/lirc/lircd"
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18
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19 logging.basicConfig(level=logging.INFO)
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20 log = logging.getLogger()
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21
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22 class Listener:
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23 def __init__(self):
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24 self.lastKey = None, None
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25 self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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26 log.info('starting up on %s', SOCKPATH)
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27 self.sock.connect(SOCKPATH)
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28
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29 def run(self):
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30 while True:
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31 keyname, updown = self.next_key()
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32 log.debug('%r (%r)', keyname, updown)
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33 if self.lastKey[0] is None or (
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34 keyname == self.lastKey[0] and
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35 updown < self.lastKey[1]):
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36 g = Graph()
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37 g.add((ROOM['remoteButton/%s' % keyname],
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38 ROOM['state'],
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39 ROOM['press']))
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40 nt = g.serialize(format='n3')
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41 resp = requests.post('http://bang6:9071/oneShot', headers={
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42 'Content-Type': 'text/n3',
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43 'user-agent': 'irRemote',
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44 }, data=nt)
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45 log.info('new press: %r', keyname)
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46 if resp.status_code != 200:
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47 log.warning('reasoning responded with %s. %r',
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48 resp.status_code, resp.__dict__)
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49 self.lastKey = keyname, updown
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50
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51 def next_key(self):
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52 '''Get the next key pressed. Return keyname, updown.
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53 '''
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54 while True:
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55 data = self.sock.recv(128)
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56 # print("Data: " + data)
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57 data = data.strip()
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58 if data:
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59 break
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60
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61 words = data.split()
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62 try:
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63 return words[2].decode('ascii'), int(words[1], 16)
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64 except:
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65 log.warning('failed on %r', data)
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66 raise
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67
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68 if __name__ == '__main__':
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69 Listener().run()
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70
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71
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