1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
# -*- coding:utf8 -*-
import asynchat
import asyncore
import socket
import sys
#import json
# Master-Master
# 1 quell
# 1 ziel
# 1 1primaerbefehl
# 1 sekundaerbefehl
# 1 n=laenge (bytes)
# n daten....
# 1 CRC
# 1 ack (=0x00 || 0xff)
# 1 syn (=0xaa)
# Master-Slave
# 1 quell
# 1 ziel
# 1 1primaerbefehl
# 1 sekundaerbefehl
# 1 n=laenge (bytes)
# n daten vom master/Anfrage....
# 1 CRC
# 1 ack (=0x00 || 0xff)
# 1 m=länge (bytes)
# m daten vom slave/Antwort...
# 1 syn (=0xaa)
deviceDescription = [
{'address':0x03, 'type':'master', 'description':'Feuerungsautomat'},
{'address':0x10, 'type':'master', 'description':'Heizungsregler #2'},
{'address':0x30, 'type':'master', 'description':'Heizkreisregler 1'},
{'address':0x70, 'type':'master', 'description':'Heizkreisregler 2'},
{'address':0x71, 'type':'master', 'description':'Heizungsregler #9'},
{'address':0xf1, 'type':'master', 'description':'Heizungsregler #10'},
{'address':0x50, 'type':'slave', 'description':'Mischer 1'},
{'address':0x51, 'type':'slave', 'description':'Mischer 2'},
{'address':0x90, 'type':'slave', 'description':'Raumgeräte/Fernsteller 1'},
{'address':0x91, 'type':'slave', 'description':'Raumgeräte/Fernsteller 2'},
{'address':0xfe, 'type':'broadcast', 'description':'Broadcast'},
]
class fields:
class DataField(object):
def __init__(self, offset):
self.offset = offset
def value(self,payload):
raise NotImplemented()
class Data2c(DataField):
def value(self,payload):
highByte = ord(payload[self.offset+1])
lowByte= ord(payload[self.offset])
return highByte*16 + (lowByte>>4) + (lowByte&0xf)/16.0
class Bit(DataField):
def value(self, payload):
return ord(payload[self.offset]) == 0x1
packetDescription = [
# Service 0x05 (Brennersteuerbefehle)
{'primary':0x5, 'secondary':0x3, 'name':'Betriebsdaten des Feuerungsautomaten an den Regler Block1'},
{'primary':0x5, 'secondary':0x7, 'name':'Betriebsdaten des Reglers an den Feuerungsautomaten'},
# Service 0x07 (Systemdatenbefehle)
{'primary':0x7, 'secondary':0x0, 'name':'Datum/Zeit - Meldung eines eBUS Masters'},
{'primary':0x7, 'secondary':0x4, 'name':'Identifikation'},
# Service 0x08 (Reglerbefehle)
{'primary':0x8, 'secondary':0x0, 'name':'Sollwertübertragung des Reglers an andere Regler'},
# Response
#p[0] = Einheit (1=>Liter, 2=>Kubik)
#p[1] = 10^0
#p[2] = 10^2
#p[3] = 10^4
#p[4] = 10^6
{'primary':0x3, 'secondary':0x8, 'name':'Gesamtbrennstoffmengenzähle lesen'},
{'primary':0x50, 'secondary':0x17, 'name':'Solar Daten', 'format':{
'solarPumpe':fields.Bit(0), 'tempKollektor':fields.Data2c(2), 'tempWarmwasserSolar':fields.Data2c(4)} },
]
def formatHex(data):
return " ".join(map(lambda byte: "%.2x"%ord(byte), data))
def getDsc(address):
dev=filter(lambda dev: dev['address'] == address, deviceDescription)
if len(dev)>0:
return dev[0]['description']
else:
return None
class EbusPacket(object):
def __init__(self, source, destination, primary_command, secondary_command):
self.source = source
self.destination = destination
self.primary_command = primary_command
self.secondary_command = secondary_command
def name(self):
if self.description():
return self.description()['name']
def __str__(self):
return "<%-18s name=\"%-15s\" source=\"%s\" destination=\"%s\" primary=0x%x secondary=0x%x length=0x%x %s>" % \
(self.__class__.__name__, self.name(), getDsc(self.source), getDsc(self.destination), \
self.primary_command, self.secondary_command, self.length, \
" ".join(map(lambda name: "%s=%s" % (name, self.values()[name]),self.values())))
def description(self):
desc = filter(lambda p: p['primary'] == self.primary_command \
and p['secondary'] == self.secondary_command, packetDescription)
if len(desc) > 0:
return desc[0]
else:
return None
def values(self):
desc = self.description()
if not desc or not desc.has_key('format'):
return dict()
return dict( map(lambda name: (name, desc['format'][name].value(self.data) ), desc['format'].keys()) )
class EbusMasterMaster(EbusPacket):
def __init__(self, source, destination, primary_command, secondary_command, data):
EbusPacket.__init__(self, source, destination, primary_command, secondary_command)
self.length = len(data)
self.data = data
class EbusMasterSlave(EbusPacket):
def __init__(self, source, destination, primary_command, secondary_command, request, response):
EbusPacket.__init__(self, source, destination, primary_command, secondary_command)
self.length = len(request)
self.request = request
self.response = response
class EbusBroadcast(EbusPacket):
def __init__(self, source, destination, primary_command, secondary_command, data):
EbusPacket.__init__(self, source, destination, primary_command, secondary_command)
self.length = len(data)
self.data = data
class EbusService():
def __init__(self,p):
self.p = p
def convertData2c(data):
# low nibble x&0xf
# high nibble x>>4
"""Beispiel für die Berechnung:
if ((x & 8000h) == 8000h) // y negativ
y = - [dez(High_Byte(!x)) 16 + dez(High_Nibble (Low_Byte (!x)))
+ (dez(Low_Nibble (Low_Byte (!x))) +1 ) / 16]
else // y positiv
y = dez(High_Byte(x)) 16 + dez(High_ Nibble (Low Byte (x)))
+ dez(Low_ Nibble (Low Byte (x))) / 16
"""
#print "%s" % (formatHex(data))
highByte = ord(data[1])
lowByte = ord(data[0])
if (0):
#return (!highByte)*16 + (!lowByte)>>4 + (((!lowByte)&0xf)+1)/16.0
return 0
else:
return highByte*16 + (lowByte>>4) + (lowByte&0xf)/16.0
class EbusService5017(EbusService):
def __init__(self,p):
EbusPacket.__init__(self,p)
self.parsePayload()
def parsePayload(self):
self.solar_pumpe = ord(p.payload[0])
self.collektor_temperature = convertData2c(p.payload[2:4])
self.warmwasser_temperature = convertData2c(p.payload[4:6])
def __str__(self):
return "Solarpumpe: %d Kollektor: %.1f°C Solarwarmwaser %.1f°C" % (self.solar_pumpe, self.collektor_temperature, self.warmwater_temperature)
class Fetcher(asynchat.async_chat):
def __init__(self):
self.buffer = ""
asynchat.async_chat.__init__(self)
self.set_terminator("")
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
self.connect(("10.2.2.200", 7970))
self.packetIndex = 0
self.buf = ""
def collect_incoming_data(self,data):
for it in range(len(data)):
if data[it] == "\xaa":
if it+1 < len(data) and data[it+1] != "\xaa":
self._parse(self.buf)
self.buf = ""
self.packetIndex = 0
else:
self.buf += data[it]
self.packetIndex = self.packetIndex + 1
#print "%.2x [%d]" % (ord(data[it]),self.packetIndex)
def _parse(self,data):
if len(data) < 2:
print "GAGA"
return
source = ord(data[0])
destination = ord(data[1])
sourceDevice = filter(lambda dev: dev['address'] == source, deviceDescription)
destinationDevice = filter(lambda dev: dev['address'] == destination, deviceDescription)
if len(sourceDevice) == 0 or len(destinationDevice) == 0:
print "Unbekanntes Paket: source=%x destination=%x" % (source, destination)
return
if len(data) < 9:
print "Unvollständige Daten"
return
primaryCommand = ord(data[2])
secondaryCommand = ord(data[3])
payloadLength = ord(data[4])
payload = data[5:6+payloadLength]
#delete 0x50 packets for devel
#if (primaryCommand == ord("\x50")):
# return
#print "PR SC NN D0 D1 D2 D3 D4 D5 D6 D7 ..."
#print "%.2x" % (primaryCommand,)
#print "%.2x %.2x %.2x %s" % (primaryCommand,secondaryCommand,payloadLength,"bla")
#print "%.2x %.2x %.2x %s" % (primaryCommand,secondaryCommand,payloadLength,formatHex(payload))
p = None
if sourceDevice[0]['type'] == 'master' and destinationDevice[0]['type'] == 'master':
p = EbusMasterMaster(source, destination, primaryCommand, secondaryCommand, payload)
#print p
#print "payload=%s" % formatHex(payload)
elif sourceDevice[0]['type'] == 'master' and destinationDevice[0]['type'] == 'slave':
p = EbusMasterSlave(source, destination, primaryCommand, secondaryCommand, payload, None)
#print p
###print "payload=%s" % formatHex(payload)
elif sourceDevice[0]['type'] == 'master' and destinationDevice[0]['type'] == 'broadcast':
p = EbusBroadcast(source, destination, primaryCommand, secondaryCommand, payload)
print p
else:
print "KOMISCHES ZEUG"
return
Fetcher()
asyncore.loop()
|
