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annotate epro.py @ 11:b4d6c6049024

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Add license
author Daniel O'Connor <darius@dons.net.au>
date Sun, 05 Dec 2021 18:02:32 +1030
parents 3baca74482b6
children 0a571da65068
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0
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1 #!/usr/bin/env python
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2
4
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3 import serial
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4 import sys
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5
0
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6 # View facing ePro from the back
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7 # +---+
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8 # +-| |-|
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9 # | |
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10 # | |
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11 # +-------+
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12 # 1 ... 6
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13 #
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14 # RJ12 plug (Jaycar cable colours)
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15 # 1 white temp out
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16 # 2 black temp in
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17 # 3 red GND
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18 # 4 green TX TTL (5V)
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19 # 5 yellow RX TTL (5V)
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20 # 6 blue VCC (12V)
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21 #
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22 # 2400bps 8E1
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23 # s = serial.Serial('/dev/cu.usbserial-AM01Z7TZ', 2400, parity='E')
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24
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25 class Packet(object):
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26 MSGTYPE = -1
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27
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28 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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29 self.dstadr = dstadr
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30 self.srcadr = srcadr
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31 self.devid = devid
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32 self.msgtype = msgtype
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33 self.data = data
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34
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35 def __repr__(self):
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36 hdr = "Src: 0x%02x Dst: 0x%02x DevID: 0x%02x MsgType: 0x%02x" % (
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37 self.dstadr, self.srcadr, self.devid, self.msgtype)
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38 # MSGTYPE is overridden for subclasses which also have their own repr so don't dumb data here
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39 if self.MSGTYPE == -1:
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40 hdr += " Data:"
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41 for d in self.data:
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42 hdr += " 0x%02x" % (d)
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43 else:
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44 hdr += " Name: " + self.MSGNAME
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45
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46 return hdr
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47
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48 class MainVoltage(Packet):
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49 """Main Battery Voltage"""
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50 MSGTYPE = 0x60
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51 MSGNAME = "Main Voltage"
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52 LEN = 3
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53
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54 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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55 super(MainVoltage, self).__init__(dstadr, srcadr, devid, msgtype, data)
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56 self.volts = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x03) << 14) / 100.0
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57
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58 def __repr__(self):
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59 s = super(MainVoltage, self).__repr__()
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60 s += ": %.2f V" % (self.volts)
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61 return s
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62
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63 class BatteryCurrent(Packet):
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64 """Main Battery Current"""
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65 MSGTYPE = 0x61
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66 MSGNAME = "Battery Current"
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67 LEN = 3
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68
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69 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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70 super(BatteryCurrent, self).__init__(dstadr, srcadr, devid, msgtype, data)
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71 self.amps = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14) / 100.0
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72 if data[0] & 0x40:
0
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73 self.amps *= -1
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74
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75 def __repr__(self):
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76 s = super(BatteryCurrent, self).__repr__()
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77 s += ": %.2f A" % (self.amps)
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78 return s
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79
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80 class AmpHours(Packet):
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81 """Number of amp hours removed from the battery"""
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82 MSGTYPE = 0x62
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83 MSGNAME = "Amp Hours"
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84 LEN = 3
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85
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86 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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87 super(AmpHours, self).__init__(dstadr, srcadr, devid, msgtype, data)
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88 self.amphrs = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14) / 100.0
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89 if data[0] & 0x40:
0
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90 self.amphrs *= -1
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91
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92 def __repr__(self):
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93 s = super(AmpHours, self).__repr__()
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94 s += ": %.2f Ah" % (self.amphrs)
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95 return s
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96
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97 class StateOfCharge(Packet):
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98 """State of battery charge"""
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99 MSGTYPE = 0x64
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100 MSGNAME = "State Of Charge"
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101 LEN = 3
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102
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103 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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104 super(StateOfCharge, self).__init__(dstadr, srcadr, devid, msgtype, data)
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105 self.soc = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x03) << 14) / 10.0
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106
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107 def __repr__(self):
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108 s = super(StateOfCharge, self).__repr__()
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109 s += ": %.2f%%" % (self.soc)
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110 return s
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111
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112 class TimeRemaining(Packet):
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113 """Time remaining until battery needs charging"""
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114 MSGTYPE = 0x65
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115 MSGNAME = "Time remaining"
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116 LEN = 3
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117
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118 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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119 super(TimeRemaining, self).__init__(dstadr, srcadr, devid, msgtype, data)
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120 self.time = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14)
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121 if data[0] & 0x40:
0
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122 self.time *= -1
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123
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124 def __repr__(self):
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125 s = super(TimeRemaining, self).__repr__()
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126 s += ": %.2f min" % (self.time)
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127 return s
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128
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diff changeset
129 class BatteryTemperature(Packet):
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130 """Battery temperature (degrees Celcius)"""
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diff changeset
131 MSGTYPE = 0x66
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132 MSGNAME = "Battery Temperature"
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133 LEN = 3
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diff changeset
134
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diff changeset
135 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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diff changeset
136 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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parents: 0
diff changeset
137 self.temp = (data[2] & 0x7f | (data[1] & 0x7f) << 7 | (data[0] & 0x3f) << 14) / 10.0
0
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parents:
diff changeset
138 if data[2] & 0x40:
3
6d0fe22566ab Fix cut & paste error for variable name, report disconnected sensor specially.
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parents: 0
diff changeset
139 self.temp *= -1
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parents: 0
diff changeset
140 if self.temp == -20:
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parents: 0
diff changeset
141 self.temp = None
0
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diff changeset
142
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diff changeset
143 def __repr__(self):
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diff changeset
144 s = super(BatteryTemperature, self).__repr__()
3
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parents: 0
diff changeset
145 if self.temp == None:
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parents: 0
diff changeset
146 s += ": n/a"
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parents: 0
diff changeset
147 else:
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parents: 0
diff changeset
148 s += ": %.2f degC" % (self.temp)
0
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diff changeset
149 return s
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150
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diff changeset
151 class MonitorStatus(Packet):
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152 """Monitor status"""
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153 MSGTYPE = 0x67
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154 MSGNAME = "Monitor Status"
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155 LEN = 3
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156
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157 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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158 super(MonitorStatus, self).__init__(dstadr, srcadr, devid, msgtype, data)
5
982eeffe9d95 Convert booleans to boolean. Sqlite doesn't do it and stores them as ints instead
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parents: 4
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159 self.autosyncvolt = bool(data[0] & 0x10)
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parents: 4
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160 self.autosyncamp = bool(data[0] & 0x08)
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parents: 4
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161 self.autosyncchrg = bool(data[0] & 0x04)
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parents: 4
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162 self.e501compat = bool(data[0] & 0x02)
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parents: 4
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163 self.alarmtst = bool(data[0] & 0x01)
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parents: 4
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164 self.backlight = bool(data[1] & 0x40)
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parents: 4
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165 self.disptst = bool(data[1] & 0x20)
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parents: 4
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166 self.tempsense = bool(data[1] & 0x10) # Seems to be inverted from data sheet
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parents: 4
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167 self.auxhv = bool(data[1] & 0x08)
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168 self.auxlv = bool(data[1] & 0x04)
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169 self.lock = bool(data[1] & 0x02)
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parents: 4
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170 self.mainhv = bool(data[1] & 0x01)
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171 self.mainlv = bool(data[2] & 0x40)
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Daniel O'Connor <darius@dons.net.au>
parents: 4
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172 self.lowbatalarm = bool(data[2] & 0x20)
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parents: 4
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173 self.batflat = bool(data[2] & 0x10)
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parents: 4
diff changeset
174 self.batfull = bool(data[2] & 0x08)
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Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
175 self.charged = bool(data[2] & 0x04)
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Daniel O'Connor <darius@dons.net.au>
parents: 4
diff changeset
176 self.nosync = bool(data[2] & 0x02)
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parents: 4
diff changeset
177 self.monreset = bool(data[2] & 0x01)
0
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parents:
diff changeset
178
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179 def __repr__(self):
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180 s = super(MonitorStatus, self).__repr__()
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181 stats = ( ( "ASV", self.autosyncvolt ), ( "ASA", self.autosyncamp ), ( "ASC" , self.autosyncchrg ),
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182 ( "E501", self.e501compat ), ( "Alarm test", self.alarmtst ), ( "Light", self.backlight ),
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parents:
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183 ( "Temperature Sensor", self.tempsense ), ( "Aux HV", self.auxhv ), ( "Aux LV", self.auxlv ),
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184 ( "Lock", self.lock ), ( "Main HV", self.mainhv ), ( "Main LV", self.mainlv ),
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
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185 ( "Low Battery", self.lowbatalarm ), ( "Battery Flat", self.batfull ),
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186 ( "Battery Full", self.batfull ), ( "Battery Charged", self.charged ),
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187 ( "No Sync", self.nosync ), ( "Monitor Reset", self.monreset ) )
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diff changeset
188 for (short, var) in stats:
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diff changeset
189 if var:
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190 s += " %s : True" % (short)
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diff changeset
191 else:
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diff changeset
192 s += " %s : False" % (short)
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parents:
diff changeset
193
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diff changeset
194 return s
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parents:
diff changeset
195
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196 class AuxVoltage(Packet):
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197 """Aux Battery Voltage"""
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198 MSGTYPE = 0x68
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199 MSGNAME = "Aux Voltage"
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diff changeset
200 LEN = 3
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parents:
diff changeset
201
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parents:
diff changeset
202 def __init__(self, dstadr, srcadr, devid, msgtype, data):
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parents:
diff changeset
203 super(AuxVoltage, self).__init__(dstadr, srcadr, devid, msgtype, data)
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parents:
diff changeset
204 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
205
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parents:
diff changeset
206 def __repr__(self):
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parents:
diff changeset
207 s = super(AuxVoltage, self).__repr__()
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parents:
diff changeset
208 s += ": %.2f V" % (self.volts)
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
209 return s
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
210
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parents:
diff changeset
211 class Processor(object):
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parents:
diff changeset
212 PKT_TYPES = { MainVoltage.MSGTYPE : MainVoltage, BatteryCurrent.MSGTYPE : BatteryCurrent,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
213 AmpHours.MSGTYPE : AmpHours, StateOfCharge.MSGTYPE : StateOfCharge,
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
214 TimeRemaining.MSGTYPE : TimeRemaining, BatteryTemperature.MSGTYPE : BatteryTemperature,
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
215 MonitorStatus.MSGTYPE : MonitorStatus, AuxVoltage.MSGTYPE : AuxVoltage }
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parents:
diff changeset
216
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parents:
diff changeset
217 def __init__(self):
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parents:
diff changeset
218 self.state = 0
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diff changeset
219 self.packets = []
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
220
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
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parents:
diff changeset
221 def process(self, dat):
4
787d9c8fdec6 Add working example when run as an exe
Daniel O'Connor <darius@dons.net.au>
parents: 3
diff changeset
222 added = False
0
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
223 for d in dat:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
224 d = ord(d)
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parents:
diff changeset
225 if d == 0xff and self.state != 4:
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parents:
diff changeset
226 print "Packet corruption"
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
227 continue
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
228
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
229 if self.state == 0:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
230 # Waiting for destination address (MSB set but not 0xff as that is EOM)
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
231 if d == 0xff or d & 0x80 == 0:
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
232 print "Skipping byte"
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
233 continue
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
234 self.dstadr = d & 0x7f
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
235 self.data = []
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
236 self.state += 1
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
237 elif self.state == 1:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
238 # Source address
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
239 self.srcadr = d
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
240 self.state += 1
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
241 elif self.state == 2:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
242 # Device ID
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parents:
diff changeset
243 self.devid = d
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
244 self.state += 1
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
245 elif self.state == 3:
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
246 # Message type
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parents:
diff changeset
247 self.msgtype = d
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
248 self.state += 1
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
249 elif self.state == 4:
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
250 # Data
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
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parents:
diff changeset
251 if d != 0xff:
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Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
252 self.data.append(d)
1de08e57774f Initial comit of code to talk to EnerDrive ePro battery monitor
Daniel O'Connor <darius@dons.net.au>
parents:
diff changeset
253 continue
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254 self.state = 0
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255 if self.msgtype in Processor.PKT_TYPES:
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256 t = self.PKT_TYPES[self.msgtype]
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257 if len(self.data) != t.LEN:
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258 print "Packet length incorrect, expected %d got %d" % (t.LEN, len(self.data))
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259 continue
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260
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261 p = self.PKT_TYPES[self.msgtype](self.dstadr, self.srcadr, self.devid, self.msgtype, self.data)
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262 else:
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263 p = Packet(self.dstadr, self.srcadr, self.devid, self.msgtype, self.data)
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264
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265 self.packets.append(p)
4
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266 added = True
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267 return added
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268
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269 def main():
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270 if len(sys.argv) != 2:
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271 print 'Bad usage'
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272 exit(1)
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273
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274 s = serial.Serial(sys.argv[1], 2400, parity='E')
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275 s.timeout = 0.2
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276
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277 p = Processor()
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278 while True:
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279 res = p.process(s.read(1024))
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280 while len(p.packets) > 0:
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281 print(p.packets.pop(0))
0
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282
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283 if __name__ == '__main__':
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284 main()