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annotate eprodbus.py @ 9:446cfe74827b

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Add program to report epro status to DBus for Venus tools. Move sqlite3 logging to here as well
author Daniel O'Connor <darius@dons.net.au>
date Sun, 05 Dec 2021 16:19:31 +1030
parents
children 08b61687b75f
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9
446cfe74827b Add program to report epro status to DBus for Venus tools.
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1 #!/usr/bin/env python
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2
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3 # Read enerdrive ePro packets from serial port and update DBus with them
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4 # Also logs to an sqlite3 DB every 60 seconds
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5
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6 import datetime
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7 from dbus.mainloop.glib import DBusGMainLoop
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8 import epro
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9 import gobject
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10 import logging
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11 import os
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12 import serial
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13 import signal
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14 import sqlite3
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15 import sys
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16
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17 sys.path.insert(1, os.path.join(os.path.dirname(__file__), 'velib_python'))
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18 from vedbus import VeDbusService
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19
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20 logging.basicConfig(format = '%(asctime)s %(message)s', level = logging.DEBUG)
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21 logging.info(__file__ + " is starting up")
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22
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23 port = 'ttyepro'
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24 servicename = 'com.victronenergy.battery.' + port
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25 instance = 0
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26
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27 class eProUpdater:
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28 def __init__(self, dbusservice, s, dbh):
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29 self.log_queue = []
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30 self.dbusservice = dbusservice
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31 self.p = epro.Processor()
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32 self.s = s
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33 self.dbh = dbh
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34 gobject.io_add_watch(s.fileno(), gobject.IO_IN, self.read_serial)
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35 gobject.timeout_add(60000, self.log_epro)
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36
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37 def read_serial(self, fd, userdata):
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38 try:
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39 data = self.s.read(1024)
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40 except Exception as e:
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41 logging.error('Failed to read from serial port: %s', str(e))
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42 return False
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43
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44 logging.debug('Read %d bytes from serial port', len(data))
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45 self.p.process(data)
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46
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47 while len(self.p.packets) > 0:
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48 # Process oldest packets first
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49 p = self.p.packets.pop(0)
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50 self.log_queue.append(p)
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51 logging.debug('%s', str(p))
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52 if type(p) == epro.StateOfCharge:
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53 self.dbusservice['/Soc'] = p.soc
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54 elif type(p) == epro.MainVoltage:
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55 self.dbusservice['/Dc/0/Voltage'] = p.volts
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56 elif type(p) == epro.BatteryCurrent:
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57 self.dbusservice['/Dc/0/Current'] = p.amps
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58 elif type(p) == epro.AmpHours:
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59 self.dbusservice['/ConsumedAmphours'] = p.amphrs
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60 elif type(p) == epro.TimeRemaining:
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61 # ePro reports in minutes, Venus expects seconds
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62 self.dbusservice['/TimeToGo'] = p.time * 60
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63 return True
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64
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65 def log_epro(self):
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66 logging.debug('Logging epro data')
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67 # Check we have all the packets we need in the queue
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68 msgtypes = set([x.msgtype for x in self.log_queue])
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69 wantedtypes = set([
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70 epro.MainVoltage.MSGTYPE,
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71 epro.AmpHours.MSGTYPE,
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72 epro.BatteryCurrent.MSGTYPE,
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73 epro.StateOfCharge.MSGTYPE,
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74 epro.TimeRemaining.MSGTYPE,
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75 epro.BatteryTemperature.MSGTYPE,
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76 epro.MonitorStatus.MSGTYPE,
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77 epro.AuxVoltage.MSGTYPE,
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78 ])
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79 if msgtypes < wantedtypes:
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80 logging.debug('Didn\'t get all packet types required to log')
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81 return
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82
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83 row = {}
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84 usedtypes = set()
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85 while len(self.log_queue) > 0:
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86 pkt = self.log_queue.pop() # Read latest packets first
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87 if pkt.msgtype == epro.MainVoltage.MSGTYPE:
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88 row['main_voltage'] = pkt.volts
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89 elif pkt.msgtype == epro.AmpHours.MSGTYPE:
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90 row['amp_hours'] = pkt.amphrs
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91 elif pkt.msgtype == epro.BatteryCurrent.MSGTYPE:
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92 row['battery_curr'] = pkt.amps
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93 elif pkt.msgtype == epro.StateOfCharge.MSGTYPE:
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94 row['state_of_charge'] = pkt.soc
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95 elif pkt.msgtype == epro.TimeRemaining.MSGTYPE:
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96 row['time_remaining'] = pkt.time
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97 elif pkt.msgtype == epro.BatteryTemperature.MSGTYPE:
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98 row['battery_temp'] = pkt.temp
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99 elif pkt.msgtype == epro.MonitorStatus.MSGTYPE:
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100 row['auto_sync_volts'] = pkt.autosyncvolt
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101 row['auto_sync_curr'] = pkt.autosyncamp
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102 row['e501'] = pkt.e501compat
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103 row['alarm_test'] = pkt.alarmtst
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104 row['light'] = pkt.backlight
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105 row['display_test'] = pkt.disptst
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106 row['temp_sensor'] = pkt.tempsense
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107 row['aux_hv'] = pkt.auxhv
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108 row['aux_lv'] = pkt.auxlv
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109 row['installer_lock'] = pkt.lock
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110 row['main_hv'] = pkt.mainhv
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111 row['main_lv'] = pkt.mainlv
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112 row['low_battery'] = pkt.lowbatalarm
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113 row['battery_flat'] = pkt.batflat
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114 row['battery_full'] = pkt.batfull
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115 row['battery_charged'] = pkt.charged
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116 row['no_sync'] = pkt.nosync
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117 row['monitor_reset'] = pkt.monreset
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118 elif pkt.msgtype == epro.AuxVoltage.MSGTYPE:
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119 row['aux_voltage'] = pkt.volts
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120
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121 usedtypes.add(pkt.msgtype)
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122 if usedtypes >= wantedtypes:
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123 self.log_queue = []
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124 break
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125
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126 logging.info('Got all packets, logging')
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127 cur = self.dbh.cursor()
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128 row['tstamp'] = int(datetime.datetime.now().strftime('%s'))
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129 cur.execute('INSERT INTO eprolog VALUES (:tstamp, :main_voltage, :aux_voltage, :battery_curr, :amp_hours, :state_of_charge, :time_remaining, :battery_temp, :auto_sync_volts, :auto_sync_curr, :e501, :alarm_test, :light, :display_test, :temp_sensor, :aux_hv, :aux_lv, :installer_lock, :main_hv, :main_lv, :low_battery, :battery_flat, :battery_full, :battery_charged, :no_sync, :monitor_reset)', row)
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130 self.dbh.commit()
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131
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132 def doexit():
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133 sys.exit(1)
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134
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135 def main():
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136 # Add signal handler to exit, otherwise we have to press ctrl-c twice to quit
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137 signal.signal(signal.SIGINT, doexit)
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138
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139 DBusGMainLoop(set_as_default = True)
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140
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141 dbusservice = VeDbusService(servicename)
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142 dbusservice.add_path('/Connected', value = True)
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143 dbusservice.add_path('/ProductName', value = 'Enerdrive ePro')
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144 dbusservice.add_path('/Mgmt/Connection', value = '/dev/' + port)
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145 dbusservice.add_path('/DeviceInstance', value = instance)
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146 dbusservice.add_path('/ProductId', value = 'unknown')
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147 dbusservice.add_path('/Dc/0/Voltage', value = None)
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148 dbusservice.add_path('/Dc/0/Current', value = None)
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149 dbusservice.add_path('/Soc', value = None)
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150 dbusservice.add_path('/TimeToGo', value = None)
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151 dbusservice.add_path('/ConsumedAmphours', value = None)
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152
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153 s = serial.Serial('/dev/' + port, 2400, parity = 'E')
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154 s.timeout = 0.1
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155
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156 dbh = sqlite3.connect('/home/root/vanlogger/log.db')
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157
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158 updater = eProUpdater(dbusservice, s, dbh)
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159
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160 logging.info('Starting main loop')
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161 mainloop = gobject.MainLoop()
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162 mainloop.run()
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163
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164 if __name__ == '__main__':
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165 main()