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annotate iec1107.py @ 0:fd8520d969c4

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Initial commit, only readmeter function works
author Daniel O'Connor <darius@dons.net.au>
date Wed, 20 Nov 2013 10:16:37 +1030
parents
children 99f25c8ab92f
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0
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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
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7 import exceptions
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8 import serial
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9 import sys
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10 import time
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11
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12 baudtable = {'0' : 300, '1' : 600, '2' : 1200, '3' : 2400, '4' : 4800, '5' : 9600, '6' : 19200}
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13
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14 class Error(exceptions.BaseException):
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15 pass
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16
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17 def readmeter(portname):
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18 s = serial.Serial(portname, baudrate = 300, bytesize = 7, parity = 'E', stopbits = 1)
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19 s.timeout = 1.5
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20
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21 # Send ident message
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22 s.write('/?!\r\n')
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23
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24 rtn = s.readline()
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25 if len(rtn) < 6 or rtn[0] != '/' or rtn[-1] != '\n' or rtn[-2] != '\r':
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26 raise Error('Invalid line "%s"' % (rtn))
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27
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28 # ACK meter and ask for data
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29 s.write('\x06000\x0d\x0a')
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30 s.timeout = 2
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31
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32 lines = []
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33 cksum = 0
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34
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35 line = s.readline()
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36 if len(line) == 0 or line[0] != '\x02':
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37 raise Error('No reply to query or invalid reply \"%s\"' % (line))
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38 else:
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39 cksum ^= reduce(lambda x, y: x ^ y, map(ord, line[1:]))
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40 lines.append(line[1:].strip())
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41 while True:
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42 line = s.readline()
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43 cksum ^= reduce(lambda x, y: x ^ y, map(ord, line))
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44 line = line.strip()
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45 if len(line) == 0:
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46 raise Error('Timeout during message')
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47 if line == '!':
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48 break
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49 lines.append(line)
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50 fin = s.read(2)
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51 if len(fin) != 2:
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52 raise Error('Timeout reading trailer')
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53 if fin[0] != '\x03':
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54 raise Error('Trailer malformed, expected 0x03, got 0x%02x' % (ord(fin[0])))
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55
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56 cksum ^= ord(fin[0])
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57 if cksum != ord(fin[1]):
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58 raise Error('Checksum mismatch, expected 0x%02x, got 0x%02x' % (cksum, ord(fin[1])))
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59 return lines
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60
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61
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62 class IEC1107(object):
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63 def __init__(self, port):
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64 # Open port
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65 self.s = serial.Serial(port, baudrate=300, bytesize=7, parity='E', stopbits=1)
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66 self.s.timeout = 0.2
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67
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68 # Send ident message
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69 self.s.write('/?!\r\n')
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70 self.s.flush()
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71 rtn = self.s.readline()
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72 if len(rtn) < 6 or rtn[0] != '/' or rtn[-1] != '\n' or rtn[-2] != '\r':
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73 raise Error('Invalid line "%s"' % (rtn))
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74 rtn = rtn.strip()
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75 self.mfg = rtn[1:4]
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76
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77 if self.mfg[2].isupper():
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78 self.restime = 0.2
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79 else:
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80 self.restime = 0.02
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81
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82 #self.baudid = rtn[4]
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83 self.baudid = '0'
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84 if self.baudid not in baudtable:
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85 raise Error('Invalid baud rate %c from "%s"' % (selfbaudid, rtn))
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86 else:
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87 self.baud = baudtable[self.baudid]
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88
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89 if rtn[5] == '/':
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90 self.mode = rtn[6]
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91 self.mfg = rtn[7:]
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92 else:
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93 self.mode = None
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94 self.mfg = rtn[5:]
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95
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96 # Send ACK/option message
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97 # Byte Meaning
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98 # 0 ACK (0x06)
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99 # 1 Protocol character ('0' = normal, '1' = secondary, '2' = HDLC protocol)
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100 # 2 Baud rate ID ('0', '1', etc)
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101 # 3 Mode control('0' = read data, '1' = device prog)
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102 self.s.write('\x060%c0\x0d\x0a' % (self.baudid))
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103 self.s.flush()
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104
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105 time.sleep(self.restime)
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106 self.s.setBaudrate(self.baud)
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107
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108 self.s.timeout = 1
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109
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110 def getdata(self):
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111 self.dat = ''
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112 while len(self.dat) == 0:
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113 data = self.s.read(1000)
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114 self.dat += data
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115
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116 cksum = reduce(lambda x, y: x ^ y, map(ord,self.dat[1:-1]))
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117 if cksum != ord(self.dat[-1]):
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118 raise Error('checksum mismatch, epected 0x%02x got 0x%02x' % (cksum, ord(self.dat[-1])))
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119 return self.dat
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120
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121 def main():
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122 d = IEC1107('/dev/cu.usbserial-AM01Z7UC')
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123
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124 if __name__ == '__main__':
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125 main()
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126
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127 s = '\x02C.1(12880041.0(22:25 18-11-13)\r\n1.8.1(0000000597*Wh)\r\n1.8.2(0000000000*Wh)\r\n1.8.3(0000264238*Wh)\r\n1.8.0(0000264835*Wh)\r\n2.8.0(0000511354*Wh)\r\n!\r\n\x03{'
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128
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129
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130 # Meter number is 1288004
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131 # 1.8.0 is import
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132 # 1.8.1 is ??
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133 # 1.8.2 is ??
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134 # 1.8.3 is ??
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135 # 2.8.0 is export
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136
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137 # C.1(12880041.0(22:25 18-11-13)
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138 # 1.8.1(0000000597*Wh)
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139 # 1.8.2(0000000000*Wh)
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140 # 1.8.3(0000264238*Wh)
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141 # 1.8.0(0000264835*Wh)
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142 # 2.8.0(0000511354*Wh)
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143
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144 # ==> /?!<0D><0A>
fd8520d969c4 Initial commit, only readmeter function works
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parents:
diff changeset
145 # <== /ACE5SMLCD
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
146 # ==> <06>050<0D><0A>
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
147 # <== -- STX --
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
148 # <== C.1(12880041.0(22:48 18-11-13)
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
149 # <== 1.8.1(0000000597*Wh)
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
150 # <== 1.8.2(0000000000*Wh)
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
151 # <== 1.8.3(0000264460*Wh)
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
152 # <== 1.8.0(0000265057*Wh)
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
153 # <== 2.8.0(0000511354*Wh)
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
154 # <== !
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
155 # <== -- ETX --
fd8520d969c4 Initial commit, only readmeter function works
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
156 # <== -- BCC --