Mercurial > ~darius > hgwebdir.cgi > iec1107

annotate iec1107.py @ 3:535076e31660

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Parse the result.
author Daniel O'Connor <darius@dons.net.au>
date Wed, 20 Nov 2013 14:45:16 +1030
parents 8f1a773a3cd5
children 10a16898903d
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1 #!/usr/bin/env python
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2
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3 #
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4 # http://www.domoticaforum.eu/viewtopic.php?f=71&t=7489
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5 #
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6
3
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7 import datetime
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8 import exceptions
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9 import re
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10 import serial
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11 import sys
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12 import time
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13
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14 baudtable = {'0' : 300, '1' : 600, '2' : 1200, '3' : 2400, '4' : 4800, '5' : 9600, '6' : 19200}
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15 parsere = re.compile('([0-9A-Z](\.[0-9A-Z]){1,})\((.*)\)')
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16
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17 class Error(exceptions.BaseException):
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18 pass
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19
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20 class IEC1107Reading(object):
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21 def __init__(self, port, force300bps = True):
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22 # Open port
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23 s = serial.Serial(port, baudrate = 300, bytesize = 7, parity = 'E', stopbits = 1)
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24 s.timeout = 2.5
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25
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26 # Send ident message
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27 s.write('/?!\r\n')
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28 rtn = s.readline()
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29 if len(rtn) == 0:
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30 raise Error('No reply to probe')
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31 if len(rtn) < 6 or rtn[0] != '/' or rtn[-1] != '\n' or rtn[-2] != '\r':
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32 raise Error('Invalid line "%s"' % (rtn))
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33
0
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34 rtn = rtn.strip()
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35 self.mfg = rtn[1:4]
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36
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37 if self.mfg[2].isupper():
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38 self.restime = 0.2
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39 else:
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40 self.restime = 0.02
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41
1
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42 if force300bps:
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43 self.baudid = '0'
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44 else:
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45 self.baudid = rtn[4]
0
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46 if self.baudid not in baudtable:
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47 raise Error('Invalid baud rate %c from "%s"' % (selfbaudid, rtn))
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48 else:
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49 self.baud = baudtable[self.baudid]
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50
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51 if rtn[5] == '/':
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52 self.mode = rtn[6]
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53 self.mfg = rtn[7:]
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54 else:
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55 self.mode = None
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56 self.mfg = rtn[5:]
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57
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58 # Send ACK/option message
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59 # Byte Meaning
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60 # 0 ACK (0x06)
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61 # 1 Protocol character ('0' = normal, '1' = secondary, '2' = HDLC protocol)
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62 # 2 Baud rate ID ('0', '1', etc)
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63 # 3 Mode control('0' = read data, '1' = device prog)
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64 s.write('\x060%c0\r\n' % (self.baudid))
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65
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66 time.sleep(self.restime)
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67 s.setBaudrate(self.baud)
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68
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69 lines = []
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70 cksum = 0
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71
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72 # Read STX
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73 head = s.read(1)
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74 if len(head) == 0:
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75 raise Error('No reply to query')
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76 if head != '\x02':
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77 raise Error('Invalid reply header 0x%02x' % (ord(head)))
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78
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79 # Read result lines
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80 while True:
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81 line = s.readline()
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82 if len(line) == 0:
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83 raise Error('Timeout during message')
3
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84
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85 cksum ^= reduce(lambda x, y: x ^ y, map(ord, line))
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86 if line.strip() == '!':
1
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87 break
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88 lines.append(line)
0
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89
1
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90 # Read trailer
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91 fin = s.read(2)
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92 if len(fin) != 2:
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93 raise Error('Timeout reading trailer')
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94 if fin[0] != '\x03':
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95 raise Error('Trailer malformed, expected 0x03, got 0x%02x' % (ord(fin[0])))
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96
1
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97 # Validate checksum
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98 cksum ^= ord(fin[0])
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99 if cksum != ord(fin[1]):
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100 raise Error('Checksum mismatch, expected 0x%02x, got 0x%02x' % (cksum, ord(fin[1])))
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101 self.rawreading = lines
1
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102 del s
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103
3
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104 self.parse()
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105 self.readdate = datetime.datetime.now()
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106
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107 def parse(self):
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108 for l in self.rawreading:
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109 m = parsere.match(l)
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110 if m == None:
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111 raise Error('Unable to parse result \"%s\"' % (l))
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112
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113 (code, xxx, value) = m.groups()
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114 if code == 'C.1':
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115 self.meterid, date = value.split('(')
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116 # XXX: The meter I have is an hour slow
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117 self.meterdate = datetime.datetime.strptime(date, '%H:%M %d-%m-%y')
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118 elif code == '1.8.0':
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119 self.importWh = int(value[0:-3])
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120 elif code[0:4] == '1.8.':
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121 # Differing tarrifs which I don't care about
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122 pass
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123 elif code == '2.8.0':
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124 self.exportWh = int(value[0:-3])
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125 else:
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126 print 'Unknown code', code
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127
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128 def __str__(self):
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129 return 'Time: %s, Meter: %s, Import: %d Wh, Export: %d Wh' % (self.readdate.strftime('%Y/%m/%d %H:%M'),
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130 self.meterid, self.importWh, self.exportWh)
0
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131 def main():
1
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132 if len(sys.argv) != 2:
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133 print 'Bad usage'
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134 print '\t%s portname' % (sys.argv[0])
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135 sys.exit(1)
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136
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137 res = IEC1107Reading(sys.argv[1])
2
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138 map(sys.stdout.write, res.rawreading)
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139 print res
0
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140 if __name__ == '__main__':
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141 main()
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142
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143 # Meter number is 1288004
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144 # 1.8.0 is import
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145 # 1.8.1 is ??
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
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146 # 1.8.2 is ??
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
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147 # 1.8.3 is ??
fd8520d969c4 Initial commit, only readmeter function works
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148 # 2.8.0 is export
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149
fd8520d969c4 Initial commit, only readmeter function works
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150 # C.1(12880041.0(22:25 18-11-13)
fd8520d969c4 Initial commit, only readmeter function works
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151 # 1.8.1(0000000597*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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152 # 1.8.2(0000000000*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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153 # 1.8.3(0000264238*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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154 # 1.8.0(0000264835*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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155 # 2.8.0(0000511354*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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156
fd8520d969c4 Initial commit, only readmeter function works
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157 # ==> /?!<0D><0A>
fd8520d969c4 Initial commit, only readmeter function works
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158 # <== /ACE5SMLCD
fd8520d969c4 Initial commit, only readmeter function works
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159 # ==> <06>050<0D><0A>
fd8520d969c4 Initial commit, only readmeter function works
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160 # <== -- STX --
fd8520d969c4 Initial commit, only readmeter function works
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161 # <== C.1(12880041.0(22:48 18-11-13)
fd8520d969c4 Initial commit, only readmeter function works
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162 # <== 1.8.1(0000000597*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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163 # <== 1.8.2(0000000000*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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164 # <== 1.8.3(0000264460*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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165 # <== 1.8.0(0000265057*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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166 # <== 2.8.0(0000511354*Wh)
fd8520d969c4 Initial commit, only readmeter function works
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167 # <== !
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
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168 # <== -- ETX --
fd8520d969c4 Initial commit, only readmeter function works
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169 # <== -- BCC --