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1 #
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2 # Mux the ZB module to TCP ports
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3 #
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4 # Copyright (c) 2009
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5 # Daniel O'Connor <darius@dons.net.au>. All rights reserved.
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6 #
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7 # Redistribution and use in source and binary forms, with or without
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8 # modification, are permitted provided that the following conditions
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9 # are met:
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10 # 1. Redistributions of source code must retain the above copyright
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11 # notice, this list of conditions and the following disclaimer.
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12 # 2. Redistributions in binary form must reproduce the above copyright
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13 # notice, this list of conditions and the following disclaimer in the
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14 # documentation and/or other materials provided with the distribution.
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15 #
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16 # THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 # ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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26 # SUCH DAMAGE.
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27 #
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28
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29 from twisted.internet.serialport import SerialPort
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30 from twisted.internet.protocol import Protocol
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31 from twisted.protocols import basic
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32 from twisted.internet import protocol, reactor
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33 from twisted.python import log
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34 import sys, zb, logging, logging.handlers
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35
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36 portname = '/dev/cuaU0'
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37 baudrate = 38400
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38 lognamebase = '/tmp/zbmux-%d.log'
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39 baseport = 1080
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40 zbids = [1, 2]
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41
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42 class ZBClient(basic.LineReceiver):
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43 """Client for the TCP connection"""
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44
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45 def connectionMade(self):
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46 log.msg("Got new client")
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47 self.factory.clients.append(self)
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48 if self.factory.lastline != None:
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49 self.message(self.factory.lastline)
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50
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51 def connectionLost(self, reason):
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52 log.msg("Lost a client")
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53 self.factory.clients.remove(self)
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54
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55 def lineReceived(self, line):
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56 """Got a line - send it to our ZB module"""
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57 #log.msg("Got line " + line)
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58 self.factory.proto.sendData(self.factory.zbid, line + '\n')
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59
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60 def message(self, message):
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61 """Called to write a mesage to our client"""
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62 self.transport.write(message)
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63
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64 class ZBFactory(protocol.ServerFactory):
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65 """Factory for a ZB module
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66
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67 Represents a remote ZB module and has zero or more clients and a log file.
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68 """
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69 protocol = ZBClient
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70
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71 def __init__(self, zbid, proto, lognamebase):
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72 self.zbid = zbid
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73 self.proto = proto
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74 self.clients = []
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75 self.tmpline = ""
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76 self.lastline = None
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77
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78 # Open logger
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79 self.logger = logging.getLogger('Zigbee-%d' % (zbid))
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80 self.logger.setLevel(logging.DEBUG)
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81
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82 # Add the log message handler to the logger
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83 handler = logging.handlers.RotatingFileHandler(
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84 lognamebase % (zbid), maxBytes = 20 * 1024, backupCount = 5)
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85
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86 self.logger.addHandler(handler)
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87
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88 def message(self, zbid, message):
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89 """Called when we get a message, check it's for us - if it is log it and write to our clients"""
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90 if zbid != self.zbid:
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91 return
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92
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93 for c in self.clients:
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94 c.message(message)
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95
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96 # Logger is line oriented, convert from packet oriented here
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97 self.tmpline = self.tmpline + message
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98 tmp = self.tmpline.split('\n')
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99 for l in tmp[0:-1]:
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100 self.lastline = l # Stores last seen line for new clients
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101 self.logger.debug(l.replace('\n', ''))
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102 self.tmpline = tmp[-1]
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103
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104 class ZBProto(Protocol):
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105 """Protocol to handle packets from the ZB module on the serial port"""
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106 def __init__(self):
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107 self.pkts = zb.Packets()
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108 self.factories = []
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109
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110 def dataReceived(self, data):
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111 """Parses data from ZB module into packets, calls each factory if a RX packet is received"""
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112 #log.msg("Read data " + data)
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113 if self.pkts.processstr(data) > 0:
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114 while len(self.pkts.pktq) > 0:
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115 a = self.pkts.pktq.pop(0)
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116 #log.msg("type is " + str(type(a)))
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117 if type(a) == type(zb.RX_16_Bit()):
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118 #log.msg("Rx'd from %d => %s" % (a.sender, a.payloadstr))
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119 for f in self.factories:
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120 f.message(a.sender, a.payloadstr)
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121
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122 def sendData(self, zbid, data):
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123 """Sends a chunk of data to our ZB module"""
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124 #log.msg("%d <= %s" % (zbid, data))
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125
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126 # Chop up data into pieces the module can handle
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127 maxsz = 10
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128 #maxsz = zb.TX_16_Bit.PKT_MAX_PAYLOAD
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129 for i, j in zip(range(0, len(data), maxsz), range(maxsz, len(data) + maxsz, maxsz)):
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130 p = zb.TX_16_Bit(zbid, data[i:j])
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131 self.transport.write(p.Pack())
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132 #log.msg("sent " + str(p))
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133
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134 if __name__ == '__main__':
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135 logFile = sys.stdout
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136 log.startLogging(logFile)
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137
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138 # ZigBee serial protocol handler
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139 zbproto = ZBProto()
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140 SerialPort(zbproto, portname, reactor, baudrate = 38400)
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141
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142 # Per-module TCP listener
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143 for id in zbids:
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144 zbfactory = ZBFactory(id, zbproto, lognamebase)
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145 zbproto.factories.append(zbfactory)
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146 reactor.listenTCP(baseport + id, zbfactory)
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147
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148 reactor.run()
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