annotate eprodbus.py @ 22:02ba26698696

Change to run as a service by serial-starter. - Remove file logging. - Take TTY from argv - Just blow up if the serial port read fails, we will die and get resurrected if the TTY comes back.
author Daniel O'Connor <darius@dons.net.au>
date Mon, 13 Dec 2021 15:51:09 +1030
parents 625064987b7c
children 64d0d5aaf329
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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 from ve_utils import exit_on_error
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20
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21 logger = logging.getLogger('eprodbus')
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22 logger.setLevel(logging.INFO)
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23
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24 formatter = logging.Formatter('%(asctime)s - %(message)s')
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25
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26 ch = logging.StreamHandler()
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27 ch.setLevel(logging.INFO)
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28 ch.setFormatter(formatter)
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29
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30 logger.addHandler(ch)
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31
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32 logger.info(__file__ + " is starting up")
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33
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34 dbpath = '/home/root/vanlogger/log.db'
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35 instance = 0
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36
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37 class eProUpdater:
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38 def __init__(self, dbusservice, s, dbh):
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39 self.log_queue = []
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40 self.dbusservice = dbusservice
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41 self.p = epro.Processor()
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42 self.s = s
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43 self.dbh = dbh
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44 gobject.io_add_watch(s.fileno(), gobject.IO_IN, lambda fd, userdata: exit_on_error(self.read_serial, fd, userdata))
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45 gobject.timeout_add(60000, exit_on_error, self.log_epro)
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46
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47 def read_serial(self, fd, userdata):
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48 data = self.s.read(1024)
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49
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50 logger.debug('Read %d bytes from serial port', len(data))
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51 self.p.process(data)
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52
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53 while len(self.p.packets) > 0:
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54 # Process oldest packets first
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55 p = self.p.packets.pop(0)
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56 self.log_queue.append(p)
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57 logger.debug('%s', str(p))
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58 if type(p) == epro.StateOfCharge:
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59 self.dbusservice['/Soc'] = p.soc
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60 elif type(p) == epro.MainVoltage:
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61 self.dbusservice['/Dc/0/Voltage'] = p.volts
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62 elif type(p) == epro.BatteryCurrent:
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63 self.dbusservice['/Dc/0/Current'] = p.amps
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64 elif type(p) == epro.BatteryTemperature:
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65 self.dbusservice['/Dc/0/Temperature'] = p.temp
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66 elif type(p) == epro.AmpHours:
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67 self.dbusservice['/ConsumedAmphours'] = p.amphrs
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68 elif type(p) == epro.TimeRemaining:
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69 # ePro reports in minutes, Venus expects seconds
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70 self.dbusservice['/TimeToGo'] = p.time * 60
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71 elif type(p) == epro.AuxVoltage:
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72 self.dbusservice['/Dc/1/Voltage'] = p.volts
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73 elif type(p) == epro.MonitorStatus:
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74 self.dbusservice['/Alarms/LowVoltage'] = 2 if p.mainlv else 0
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75 self.dbusservice['/Alarms/HighVoltage'] = 2 if p.mainhv else 0
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76 self.dbusservice['/Alarms/LowStarterVoltage'] = 2 if p.auxlv else 0
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77 self.dbusservice['/Alarms/HighStarterVoltage'] = 2 if p.auxhv else 0
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78 self.dbusservice['/Alarms/LowSoc'] = 2 if p.batflat else 0
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79 self.dbusservice['/Settings/HasTemperature'] = 1 if p.tempsense else 0
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80 return True
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81
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82 def log_epro(self):
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83 logger.debug('Logging epro data')
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84 # Check we have all the packets we need in the queue
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85 msgtypes = set([x.msgtype for x in self.log_queue])
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86 wantedtypes = set([
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87 epro.MainVoltage.MSGTYPE,
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88 epro.AmpHours.MSGTYPE,
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89 epro.BatteryCurrent.MSGTYPE,
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90 epro.StateOfCharge.MSGTYPE,
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91 epro.TimeRemaining.MSGTYPE,
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92 epro.BatteryTemperature.MSGTYPE,
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93 epro.MonitorStatus.MSGTYPE,
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94 epro.AuxVoltage.MSGTYPE,
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95 ])
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96 if msgtypes < wantedtypes:
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97 logger.debug('Didn\'t get all packet types required to log')
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98 return
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99
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100 row = {}
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101 usedtypes = set()
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102 while len(self.log_queue) > 0:
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103 pkt = self.log_queue.pop() # Read latest packets first
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104 if pkt.msgtype == epro.MainVoltage.MSGTYPE:
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105 row['main_voltage'] = pkt.volts
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106 elif pkt.msgtype == epro.AmpHours.MSGTYPE:
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107 row['amp_hours'] = pkt.amphrs
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108 elif pkt.msgtype == epro.BatteryCurrent.MSGTYPE:
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109 row['battery_curr'] = pkt.amps
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110 elif pkt.msgtype == epro.StateOfCharge.MSGTYPE:
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111 row['state_of_charge'] = pkt.soc
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112 elif pkt.msgtype == epro.TimeRemaining.MSGTYPE:
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113 row['time_remaining'] = pkt.time
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114 elif pkt.msgtype == epro.BatteryTemperature.MSGTYPE:
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115 row['battery_temp'] = pkt.temp
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116 elif pkt.msgtype == epro.MonitorStatus.MSGTYPE:
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117 row['auto_sync_volts'] = pkt.autosyncvolt
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118 row['auto_sync_curr'] = pkt.autosyncamp
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119 row['e501'] = pkt.e501compat
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120 row['alarm_test'] = pkt.alarmtst
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121 row['light'] = pkt.backlight
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122 row['display_test'] = pkt.disptst
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123 row['temp_sensor'] = pkt.tempsense
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124 row['aux_hv'] = pkt.auxhv
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125 row['aux_lv'] = pkt.auxlv
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126 row['installer_lock'] = pkt.lock
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127 row['main_hv'] = pkt.mainhv
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128 row['main_lv'] = pkt.mainlv
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129 row['low_battery'] = pkt.lowbatalarm
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130 row['battery_flat'] = pkt.batflat
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131 row['battery_full'] = pkt.batfull
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132 row['battery_charged'] = pkt.charged
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133 row['no_sync'] = pkt.nosync
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134 row['monitor_reset'] = pkt.monreset
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135 elif pkt.msgtype == epro.AuxVoltage.MSGTYPE:
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136 row['aux_voltage'] = pkt.volts
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137
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138 usedtypes.add(pkt.msgtype)
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139 if usedtypes >= wantedtypes:
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140 self.log_queue = []
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141 break
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142
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143 logger.info('Got all packets, logging')
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144 cur = self.dbh.cursor()
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145 row['tstamp'] = int(datetime.datetime.now().strftime('%s'))
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146 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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147 self.dbh.commit()
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148 return True
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149
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3067bb98b482 Fix signal handling by using the correct function signature.
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150 def doexit(signum, frame):
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151 sys.exit(1)
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152
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153 def main():
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154 port = sys.argv[1]
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155 servicename = 'com.victronenergy.battery.' + port
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156 # Add signal handler to exit, otherwise we have to press ctrl-c twice to quit
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157 signal.signal(signal.SIGINT, doexit)
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158
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159 DBusGMainLoop(set_as_default = True)
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160
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161 dbusservice = VeDbusService(servicename)
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162 dbusservice.add_mandatory_paths(__file__, '1.0', 'Serial ' + port, instance, 0, 'Enerdrive ePro', '1.0', '1.0', 1)
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163 dbusservice.add_path('/Dc/0/Voltage', value = None)
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164 dbusservice.add_path('/Dc/0/Temperature', value = None)
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165 dbusservice.add_path('/Dc/0/Current', value = None)
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166 dbusservice.add_path('/Dc/1/Voltage', value = None)
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167 dbusservice.add_path('/Soc', value = None)
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168 dbusservice.add_path('/TimeToGo', value = None)
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169 dbusservice.add_path('/ConsumedAmphours', value = None)
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170 dbusservice.add_path('/Alarms/LowVoltage', value = 0)
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171 dbusservice.add_path('/Alarms/HighVoltage', value = 0)
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172 dbusservice.add_path('/Alarms/LowStarterVoltage', value = 0)
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173 dbusservice.add_path('/Alarms/HighStarterVoltage', value = 0)
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174 dbusservice.add_path('/Alarms/LowSoc', value = 0)
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175 dbusservice.add_path('/Settings/HasTemperature', value = 0)
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176
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177 s = serial.Serial('/dev/' + port, 2400, parity = 'E')
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178 s.timeout = 0.1
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179
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3338e666256b Move DB path to top of the file with the other knobs.
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180 dbh = sqlite3.connect(dbpath)
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181
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182 updater = eProUpdater(dbusservice, s, dbh)
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183
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184 logger.info('Starting main loop')
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185 mainloop = gobject.MainLoop()
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186 mainloop.run()
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187
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188 if __name__ == '__main__':
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189 main()