Mercurial > ~darius > hgwebdir.cgi > epro

annotate epro.py @ 12:0a571da65068

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Use logging rather than print.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 06 Dec 2021 11:25:41 +1030
parents 3baca74482b6
children 4450cf739263
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1 #!/usr/bin/env python
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2
12
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3 import logging
4
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4 import serial
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5 import sys
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6
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7 logger = logging.getLogger('epro')
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8
0
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9 # View facing ePro from the back
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10 # +---+
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11 # +-| |-|
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12 # | |
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13 # | |
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14 # +-------+
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15 # 1 ... 6
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16 #
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17 # RJ12 plug (Jaycar cable colours)
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18 # 1 white temp out
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19 # 2 black temp in
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20 # 3 red GND
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21 # 4 green TX TTL (5V)
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22 # 5 yellow RX TTL (5V)
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23 # 6 blue VCC (12V)
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24 #
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25 # 2400bps 8E1
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26 # s = serial.Serial('/dev/cu.usbserial-AM01Z7TZ', 2400, parity='E')
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27
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28 class Packet(object):
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29 MSGTYPE = -1
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30
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31 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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32 self.dstadr = dstadr
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33 self.srcadr = srcadr
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34 self.devid = devid
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35 self.msgtype = msgtype
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36 self.data = data
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37
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38 def __repr__(self):
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39 hdr = "Src: 0x%02x Dst: 0x%02x DevID: 0x%02x MsgType: 0x%02x" % (
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40 self.dstadr, self.srcadr, self.devid, self.msgtype)
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41 # MSGTYPE is overridden for subclasses which also have their own repr so don't dumb data here
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42 if self.MSGTYPE == -1:
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43 hdr += " Data:"
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44 for d in self.data:
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45 hdr += " 0x%02x" % (d)
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46 else:
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47 hdr += " Name: " + self.MSGNAME
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48
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49 return hdr
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50
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51 class MainVoltage(Packet):
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52 """Main Battery Voltage"""
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53 MSGTYPE = 0x60
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54 MSGNAME = "Main Voltage"
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55 LEN = 3
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56
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57 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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58 super(MainVoltage, self).__init__(dstadr, srcadr, devid, msgtype, data)
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59 self.volts = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x03) << 14) / 100.0
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60
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61 def __repr__(self):
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62 s = super(MainVoltage, self).__repr__()
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63 s += ": %.2f V" % (self.volts)
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64 return s
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65
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66 class BatteryCurrent(Packet):
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67 """Main Battery Current"""
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68 MSGTYPE = 0x61
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69 MSGNAME = "Battery Current"
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70 LEN = 3
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71
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72 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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73 super(BatteryCurrent, self).__init__(dstadr, srcadr, devid, msgtype, data)
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74 self.amps = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14) / 100.0
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75 if data[0] & 0x40:
0
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76 self.amps *= -1
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77
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78 def __repr__(self):
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79 s = super(BatteryCurrent, self).__repr__()
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80 s += ": %.2f A" % (self.amps)
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81 return s
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82
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83 class AmpHours(Packet):
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84 """Number of amp hours removed from the battery"""
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85 MSGTYPE = 0x62
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86 MSGNAME = "Amp Hours"
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87 LEN = 3
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88
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89 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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90 super(AmpHours, self).__init__(dstadr, srcadr, devid, msgtype, data)
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91 self.amphrs = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14) / 100.0
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92 if data[0] & 0x40:
0
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93 self.amphrs *= -1
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94
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95 def __repr__(self):
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96 s = super(AmpHours, self).__repr__()
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97 s += ": %.2f Ah" % (self.amphrs)
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98 return s
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99
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100 class StateOfCharge(Packet):
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101 """State of battery charge"""
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102 MSGTYPE = 0x64
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103 MSGNAME = "State Of Charge"
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104 LEN = 3
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105
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106 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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107 super(StateOfCharge, self).__init__(dstadr, srcadr, devid, msgtype, data)
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108 self.soc = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x03) << 14) / 10.0
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109
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110 def __repr__(self):
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111 s = super(StateOfCharge, self).__repr__()
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112 s += ": %.2f%%" % (self.soc)
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113 return s
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114
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115 class TimeRemaining(Packet):
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116 """Time remaining until battery needs charging"""
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117 MSGTYPE = 0x65
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118 MSGNAME = "Time remaining"
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119 LEN = 3
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120
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121 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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122 super(TimeRemaining, self).__init__(dstadr, srcadr, devid, msgtype, data)
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123 self.time = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14)
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124 if data[0] & 0x40:
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125 self.time *= -1
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126
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127 def __repr__(self):
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128 s = super(TimeRemaining, self).__repr__()
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129 s += ": %.2f min" % (self.time)
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130 return s
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diff changeset
131
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132 class BatteryTemperature(Packet):
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133 """Battery temperature (degrees Celcius)"""
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134 MSGTYPE = 0x66
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135 MSGNAME = "Battery Temperature"
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136 LEN = 3
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diff changeset
137
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diff changeset
138 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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diff changeset
139 super(BatteryTemperature, self).__init__(dstadr, srcadr, devid, msgtype, data)
3
6d0fe22566ab Fix cut & paste error for variable name, report disconnected sensor specially.
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140 self.temp = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14) / 10.0
0
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141 if data[2] & 0x40:
3
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diff changeset
142 self.temp *= -1
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diff changeset
143 if self.temp == -20:
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parents: 0
diff changeset
144 self.temp = None
0
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diff changeset
145
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diff changeset
146 def __repr__(self):
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diff changeset
147 s = super(BatteryTemperature, self).__repr__()
3
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parents: 0
diff changeset
148 if self.temp == None:
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diff changeset
149 s += ": n/a"
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diff changeset
150 else:
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parents: 0
diff changeset
151 s += ": %.2f degC" % (self.temp)
0
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152 return s
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153
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154 class MonitorStatus(Packet):
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155 """Monitor status"""
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156 MSGTYPE = 0x67
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157 MSGNAME = "Monitor Status"
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158 LEN = 3
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159
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160 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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161 super(MonitorStatus, self).__init__(dstadr, srcadr, devid, msgtype, data)
5
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162 self.autosyncvolt = bool(data[0] & 0x10)
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163 self.autosyncamp = bool(data[0] & 0x08)
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164 self.autosyncchrg = bool(data[0] & 0x04)
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165 self.e501compat = bool(data[0] & 0x02)
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166 self.alarmtst = bool(data[0] & 0x01)
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167 self.backlight = bool(data[1] & 0x40)
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168 self.disptst = bool(data[1] & 0x20)
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169 self.tempsense = bool(data[1] & 0x10) # Seems to be inverted from data sheet
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170 self.auxhv = bool(data[1] & 0x08)
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171 self.auxlv = bool(data[1] & 0x04)
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172 self.lock = bool(data[1] & 0x02)
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173 self.mainhv = bool(data[1] & 0x01)
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174 self.mainlv = bool(data[2] & 0x40)
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175 self.lowbatalarm = bool(data[2] & 0x20)
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176 self.batflat = bool(data[2] & 0x10)
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177 self.batfull = bool(data[2] & 0x08)
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178 self.charged = bool(data[2] & 0x04)
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Daniel O'Connor <darius@dons.net.au>
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179 self.nosync = bool(data[2] & 0x02)
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parents: 4
diff changeset
180 self.monreset = bool(data[2] & 0x01)
0
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parents:
diff changeset
181
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182 def __repr__(self):
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183 s = super(MonitorStatus, self).__repr__()
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184 stats = ( ( "ASV", self.autosyncvolt ), ( "ASA", self.autosyncamp ), ( "ASC" , self.autosyncchrg ),
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185 ( "E501", self.e501compat ), ( "Alarm test", self.alarmtst ), ( "Light", self.backlight ),
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parents:
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186 ( "Temperature Sensor", self.tempsense ), ( "Aux HV", self.auxhv ), ( "Aux LV", self.auxlv ),
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187 ( "Lock", self.lock ), ( "Main HV", self.mainhv ), ( "Main LV", self.mainlv ),
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188 ( "Low Battery", self.lowbatalarm ), ( "Battery Flat", self.batfull ),
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diff changeset
189 ( "Battery Full", self.batfull ), ( "Battery Charged", self.charged ),
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190 ( "No Sync", self.nosync ), ( "Monitor Reset", self.monreset ) )
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diff changeset
191 for (short, var) in stats:
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diff changeset
192 if var:
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193 s += " %s : True" % (short)
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diff changeset
194 else:
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195 s += " %s : False" % (short)
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parents:
diff changeset
196
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diff changeset
197 return s
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diff changeset
198
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199 class AuxVoltage(Packet):
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200 """Aux Battery Voltage"""
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diff changeset
201 MSGTYPE = 0x68
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Daniel O'Connor <darius@dons.net.au>
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diff changeset
202 MSGNAME = "Aux Voltage"
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
203 LEN = 3
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
204
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parents:
diff changeset
205 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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parents:
diff changeset
206 super(AuxVoltage, self).__init__(dstadr, srcadr, devid, msgtype, data)
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parents:
diff changeset
207 self.volts = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x03) << 14) / 100.0
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
208
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diff changeset
209 def __repr__(self):
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parents:
diff changeset
210 s = super(AuxVoltage, self).__repr__()
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parents:
diff changeset
211 s += ": %.2f V" % (self.volts)
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parents:
diff changeset
212 return s
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parents:
diff changeset
213
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diff changeset
214 class Processor(object):
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parents:
diff changeset
215 PKT_TYPES = { MainVoltage.MSGTYPE : MainVoltage, BatteryCurrent.MSGTYPE : BatteryCurrent,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
216 AmpHours.MSGTYPE : AmpHours, StateOfCharge.MSGTYPE : StateOfCharge,
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parents:
diff changeset
217 TimeRemaining.MSGTYPE : TimeRemaining, BatteryTemperature.MSGTYPE : BatteryTemperature,
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parents:
diff changeset
218 MonitorStatus.MSGTYPE : MonitorStatus, AuxVoltage.MSGTYPE : AuxVoltage }
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parents:
diff changeset
219
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diff changeset
220 def __init__(self):
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diff changeset
221 self.state = 0
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diff changeset
222 self.packets = []
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parents:
diff changeset
223
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parents:
diff changeset
224 def process(self, dat):
4
787d9c8fdec6 Add working example when run as an exe
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parents: 3
diff changeset
225 added = False
0
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parents:
diff changeset
226 for d in dat:
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diff changeset
227 d = ord(d)
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parents:
diff changeset
228 if d == 0xff and self.state != 4:
12
0a571da65068 Use logging rather than print.
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parents: 7
diff changeset
229 logger.warn("Packet corruption")
0
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parents:
diff changeset
230 continue
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parents:
diff changeset
231
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parents:
diff changeset
232 if self.state == 0:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
233 # Waiting for destination address (MSB set but not 0xff as that is EOM)
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parents:
diff changeset
234 if d == 0xff or d & 0x80 == 0:
12
0a571da65068 Use logging rather than print.
Daniel O'Connor <darius@dons.net.au>
parents: 7
diff changeset
235 logger.info("Skipping byte")
0
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
236 continue
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
237 self.dstadr = d & 0x7f
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Daniel O'Connor <darius@dons.net.au>
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diff changeset
238 self.data = []
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parents:
diff changeset
239 self.state += 1
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
240 elif self.state == 1:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
241 # Source address
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parents:
diff changeset
242 self.srcadr = d
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parents:
diff changeset
243 self.state += 1
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
244 elif self.state == 2:
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parents:
diff changeset
245 # Device ID
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parents:
diff changeset
246 self.devid = d
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parents:
diff changeset
247 self.state += 1
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parents:
diff changeset
248 elif self.state == 3:
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parents:
diff changeset
249 # Message type
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diff changeset
250 self.msgtype = d
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parents:
diff changeset
251 self.state += 1
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
252 elif self.state == 4:
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parents:
diff changeset
253 # Data
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parents:
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254 if d != 0xff:
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255 self.data.append(d)
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256 continue
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257 self.state = 0
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258 if self.msgtype in Processor.PKT_TYPES:
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259 t = self.PKT_TYPES[self.msgtype]
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260 if len(self.data) != t.LEN:
12
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261 logger.warn("Packet length incorrect, expected %d got %d", t.LEN, len(self.data))
0
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262 continue
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263
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264 p = self.PKT_TYPES[self.msgtype](self.dstadr, self.srcadr, self.devid, self.msgtype, self.data)
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265 else:
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266 p = Packet(self.dstadr, self.srcadr, self.devid, self.msgtype, self.data)
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267
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268 self.packets.append(p)
4
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269 added = True
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270 return added
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271
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272 def main():
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273 if len(sys.argv) != 2:
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274 print('Bad usage')
4
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275 exit(1)
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276
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277 s = serial.Serial(sys.argv[1], 2400, parity='E')
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278 s.timeout = 0.2
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279
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280 p = Processor()
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281 while True:
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282 res = p.process(s.read(1024))
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283 while len(p.packets) > 0:
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284 print(p.packets.pop(0))
0
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285
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286 if __name__ == '__main__':
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287 main()