697 lines
29 KiB
Python
697 lines
29 KiB
Python
#!/usr/bin/env python
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import gobject
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import platform
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import argparse
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import logging
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import sys
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import os
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import time
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import datetime
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import serial
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import math
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import struct
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import decimal
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# Victron packages
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sys.path.insert(1, os.path.join(os.path.dirname(__file__), './ext/velib_python'))
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from vedbus import VeDbusService
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# setup timezone
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os.environ['TZ'] = 'Europe/Berlin'
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logging.basicConfig(
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format='%(asctime)s %(levelname)-8s %(message)s',
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level=logging.INFO,
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datefmt='%Y-%m-%d %H:%M:%S')
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serial_port = serial.Serial('/dev/ttyUSB0', 115200, timeout=1)
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serial_port.flushInput()
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logging.info(serial_port.name)
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# connect and register to dbus
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driver = {
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'name' : "Chargery BMS",
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'servicename' : "chargerybms",
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'instance' : 1,
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'id' : 0x01,
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'version' : 1.1,
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'serial' : "CHGBMS04032020A1",
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'connection' : "com.victronenergy.battery.ttyUSB0"
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}
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from dbus.mainloop.glib import DBusGMainLoop
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DBusGMainLoop(set_as_default=True)
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dbusservice = VeDbusService(driver['connection'])
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# Create the management objects, as specified in the ccgx dbus-api document
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dbusservice.add_path('/Mgmt/ProcessName', __file__)
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dbusservice.add_path('/Mgmt/ProcessVersion', 'Unknown and Python ' + platform.python_version())
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dbusservice.add_path('/Mgmt/Connection', driver['connection'])
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# Create the mandatory objects
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dbusservice.add_path('/DeviceInstance', driver['instance'])
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dbusservice.add_path('/ProductId', driver['id'])
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dbusservice.add_path('/ProductName', driver['name'])
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dbusservice.add_path('/FirmwareVersion', driver['version'])
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dbusservice.add_path('/HardwareVersion', driver['version'])
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dbusservice.add_path('/Serial', driver['serial'])
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dbusservice.add_path('/Connected', 1)
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# Create device list
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dbusservice.add_path('/Devices/0/DeviceInstance', driver['instance'])
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dbusservice.add_path('/Devices/0/FirmwareVersion', driver['version'])
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dbusservice.add_path('/Devices/0/ProductId', driver['id'])
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dbusservice.add_path('/Devices/0/ProductName', driver['name'])
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dbusservice.add_path('/Devices/0/ServiceName', driver['servicename'])
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dbusservice.add_path('/Devices/0/VregLink', "(API)")
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# Create the chargery bms path
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dbusservice.add_path('/Info/Soc', -1)
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dbusservice.add_path('/Info/CurrentMode', -1)
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dbusservice.add_path('/Info/Current', -1)
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dbusservice.add_path('/Info/Temp/Sensor1', -1)
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dbusservice.add_path('/Info/Temp/Sensor2', -1)
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dbusservice.add_path('/Info/Capacity', -1)
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dbusservice.add_path('/Info/ChargeEndVoltage', -1)
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dbusservice.add_path('/Info/UpdateTimestamp', -1)
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dbusservice.add_path('/Voltages/Cell1', -1)
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dbusservice.add_path('/Voltages/Cell2', -1)
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dbusservice.add_path('/Voltages/Cell3', -1)
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dbusservice.add_path('/Voltages/Cell4', -1)
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dbusservice.add_path('/Voltages/Cell5', -1)
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dbusservice.add_path('/Voltages/Cell6', -1)
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dbusservice.add_path('/Voltages/Cell7', -1)
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dbusservice.add_path('/Voltages/Cell8', -1)
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dbusservice.add_path('/Voltages/Cell9', -1)
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dbusservice.add_path('/Voltages/Cell10', -1)
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dbusservice.add_path('/Voltages/Cell11', -1)
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dbusservice.add_path('/Voltages/Cell12', -1)
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dbusservice.add_path('/Voltages/Cell13', -1)
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dbusservice.add_path('/Voltages/Cell14', -1)
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dbusservice.add_path('/Voltages/Cell15', -1)
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dbusservice.add_path('/Voltages/Cell16', -1)
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dbusservice.add_path('/Voltages/Sum', -1)
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dbusservice.add_path('/Voltages/Diff', -1)
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dbusservice.add_path('/Voltages/Max', -1)
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dbusservice.add_path('/Voltages/Min', -1)
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dbusservice.add_path('/Voltages/UpdateTimestamp', -1)
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# Create the real values paths
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dbusservice.add_path('/Raw/Info/Soc', -1)
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dbusservice.add_path('/Raw/Info/CurrentMode', -1)
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dbusservice.add_path('/Raw/Info/Current', -1)
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dbusservice.add_path('/Raw/Info/Temp/Sensor1', -1)
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dbusservice.add_path('/Raw/Info/Temp/Sensor2', -1)
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dbusservice.add_path('/Raw/Info/Capacity', -1)
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dbusservice.add_path('/Raw/Info/ChargeEndVoltage', -1)
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dbusservice.add_path('/Raw/Info/UpdateTimestamp', -1)
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dbusservice.add_path('/Raw/Voltages/Cell1', -1)
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dbusservice.add_path('/Raw/Voltages/Cell2', -1)
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dbusservice.add_path('/Raw/Voltages/Cell3', -1)
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dbusservice.add_path('/Raw/Voltages/Cell4', -1)
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dbusservice.add_path('/Raw/Voltages/Cell5', -1)
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dbusservice.add_path('/Raw/Voltages/Cell6', -1)
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dbusservice.add_path('/Raw/Voltages/Cell7', -1)
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dbusservice.add_path('/Raw/Voltages/Cell8', -1)
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dbusservice.add_path('/Raw/Voltages/Cell9', -1)
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dbusservice.add_path('/Raw/Voltages/Cell10', -1)
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dbusservice.add_path('/Raw/Voltages/Cell11', -1)
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dbusservice.add_path('/Raw/Voltages/Cell12', -1)
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dbusservice.add_path('/Raw/Voltages/Cell13', -1)
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dbusservice.add_path('/Raw/Voltages/Cell14', -1)
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dbusservice.add_path('/Raw/Voltages/Cell15', -1)
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dbusservice.add_path('/Raw/Voltages/Cell16', -1)
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dbusservice.add_path('/Raw/Voltages/Sum', -1)
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dbusservice.add_path('/Raw/Voltages/Diff', -1)
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dbusservice.add_path('/Raw/Voltages/Max', -1)
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dbusservice.add_path('/Raw/Voltages/Min', -1)
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dbusservice.add_path('/Raw/Voltages/UpdateTimestamp', -1)
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PACKET_HEADER = 0x24
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PACKET_STATUS_CELLS = 0x56
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PACKET_STATUS_BMS = 0x57
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PACKET_LENGTH_MINIMUM = 15
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PACKET_LENGTH_STATUS_CELLS = 38
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PACKET_LENGTH_STATUS_BMS = 15
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MIN_CELL_VOLTAGE = 1.0
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BMS_STATUS = {
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'bms' : {
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'charged_end_voltage' : {
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'value' : -1.000,
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'text' : ""
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},
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'current_mode' : {
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'value' : -1,
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'text' : ""
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},
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'current' : {
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'value' : -1,
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'text' : ""
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},
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'temperature' : {
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'sensor_t1' : {
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'value' : -1.00,
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'text' : ""
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},
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'sensor_t2' : {
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'value' : -1.00,
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'text' : ""
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}
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},
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'soc' : {
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'value' : -1,
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'text' : ""
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},
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'timestamp' : {
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'value' : -1,
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'text' : ""
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}
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},
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'cells' : {
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'capacity' : {
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'value' : -1,
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'text' : ""
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},
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'cell1_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell2_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell3_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell4_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell5_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell6_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell7_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell8_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell9_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell10_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell11_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell12_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell13_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell14_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell15_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'cell16_voltage' : {
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'value' : -1,
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'text' : ""
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},
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'agg_voltages' : {
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'sum' : {
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'value' : -1,
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'text' : ""
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},
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'max' : {
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'value' : -1,
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'text' : ""
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},
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'min' : {
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'value' : -1,
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'text' : ""
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},
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'diff' : {
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'value' : -1,
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'text' : ""
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}
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},
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'timestamp' : {
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'value' : -1,
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'text' : ""
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}
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}
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}
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def debug_packet(packet):
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print
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for packet_byte in packet:
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print ord(packet_byte),"[",packet_byte.encode("hex"),"]",
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print
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print
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def get_header_position(packet):
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# detect header position
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previous_packet_byte = "0"
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pos_iterator = -1
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for packet_byte in packet:
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pos_iterator += 1
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if ((ord(previous_packet_byte) == PACKET_HEADER) and (ord(packet_byte) == PACKET_HEADER)):
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break
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previous_packet_byte = packet_byte
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return pos_iterator
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def get_voltage_value(byte1, byte2):
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return float((float(byte1 * 256) + float(byte2)) / 1000)
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def get_current_value(byte1, byte2):
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return float((float(byte1 * 256) + float(byte2)) / 10)
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def get_temperature_value(byte1, byte2):
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return float((float(byte1 * 256) + float(byte2)) / 10)
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def parse_packet(packet):
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logging.debug("Parse Packet")
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while (len(packet) > PACKET_LENGTH_MINIMUM):
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header_position = get_header_position(packet)
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# now parse the packet
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if ((header_position == -1) or (header_position == len(packet) - 1)):
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logging.debug("Packet Invalid")
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packet = ""
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else:
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# strip packet
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packet = packet[(header_position - 1):]
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if (len(packet) >= 4):
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if ((ord(packet[0]) == PACKET_HEADER) and (ord(packet[1]) == PACKET_HEADER)):
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packet_length = ord(packet[3])
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logging.debug("Packet Length [" + str (packet_length) + " bytes]")
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# debug_packet(packet)
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if (ord(packet[2]) == PACKET_STATUS_BMS):
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if (len(packet) < PACKET_LENGTH_STATUS_BMS):
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logging.debug("Packet Status BMS too short, skip")
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packet = ""
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else:
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logging.debug("Packet Status BMS")
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# checksum value
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checksum = ord(packet[14])
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# calculate checksum
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checksum_check = (ord(packet[0])
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+ ord(packet[1])
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+ ord(packet[2])
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+ ord(packet[3])
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+ ord(packet[4])
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+ ord(packet[5])
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+ ord(packet[6])
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+ ord(packet[7])
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+ ord(packet[8])
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+ ord(packet[9])
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+ ord(packet[10])
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+ ord(packet[11])
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+ ord(packet[12])
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+ ord(packet[13])) % 256
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logging.debug("Packet Checksum : " + str(checksum) + "|" + str(checksum_check))
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# data integrity does match
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if (checksum == checksum_check):
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# charge end voltage
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BMS_STATUS['bms']['charged_end_voltage']['value'] = get_voltage_value(ord(packet[4]), ord(packet[5]))
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BMS_STATUS['bms']['charged_end_voltage']['text'] = "{:.2f}".format(BMS_STATUS['bms']['charged_end_voltage']['value']) + "V"
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dbusservice["/Info/ChargeEndVoltage"] = BMS_STATUS['bms']['charged_end_voltage']['text']
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dbusservice["/Raw/Info/ChargeEndVoltage"] = BMS_STATUS['bms']['charged_end_voltage']['value']
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# actual current
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BMS_STATUS['bms']['current']['value'] = get_current_value(ord(packet[7]), ord(packet[8]))
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# charge mode
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bms_charge_mode = ord(packet[6])
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if (bms_charge_mode == 0x00):
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BMS_STATUS['bms']['current_mode']['value'] = 0
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BMS_STATUS['bms']['current_mode']['text'] = "Discharge"
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BMS_STATUS['bms']['current']['text'] = "-" + str(BMS_STATUS['bms']['current']['value']) + "A"
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elif (bms_charge_mode == 0x01):
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BMS_STATUS['bms']['current_mode']['value'] = 1
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BMS_STATUS['bms']['current_mode']['text'] = "Charge"
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BMS_STATUS['bms']['current']['text'] = "+" + str(BMS_STATUS['bms']['current']['value']) + "A"
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elif (bms_charge_mode == 0x02):
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BMS_STATUS['bms']['current_mode']['value'] = 1
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BMS_STATUS['bms']['current_mode']['text'] = "Storage"
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BMS_STATUS['bms']['current']['text'] = str(BMS_STATUS['bms']['current']['value']) + "A"
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else:
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BMS_STATUS['bms']['current_mode']['value'] = -1
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BMS_STATUS['bms']['current_mode']['text'] = ""
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BMS_STATUS['bms']['current']['text'] = ""
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dbusservice["/Info/CurrentMode"] = BMS_STATUS['bms']['current_mode']['text']
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dbusservice["/Info/Current"] = BMS_STATUS['bms']['current']['text']
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dbusservice["/Raw/Info/CurrentMode"] = BMS_STATUS['bms']['current_mode']['value']
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dbusservice["/Raw/Info/Current"] = BMS_STATUS['bms']['current']['value']
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# current temperatures
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BMS_STATUS['bms']['temperature']['sensor_t1']['value'] = get_temperature_value(ord(packet[9]), ord(packet[10]))
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BMS_STATUS['bms']['temperature']['sensor_t1']['text'] = str(BMS_STATUS['bms']['temperature']['sensor_t1']['value']) + "C"
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BMS_STATUS['bms']['temperature']['sensor_t2']['value'] = get_temperature_value(ord(packet[11]), ord(packet[12]))
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BMS_STATUS['bms']['temperature']['sensor_t2']['text'] = str(BMS_STATUS['bms']['temperature']['sensor_t2']['value']) + "C"
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dbusservice["/Info/Temp/Sensor1"] = BMS_STATUS['bms']['temperature']['sensor_t1']['text']
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dbusservice["/Info/Temp/Sensor2"] = BMS_STATUS['bms']['temperature']['sensor_t2']['text']
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dbusservice["/Raw/Info/Temp/Sensor1"] = BMS_STATUS['bms']['temperature']['sensor_t1']['value']
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dbusservice["/Raw/Info/Temp/Sensor2"] = BMS_STATUS['bms']['temperature']['sensor_t2']['value']
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# soc value
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BMS_STATUS['bms']['soc']['value'] = ord(packet[13])
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BMS_STATUS['bms']['soc']['text'] = str(ord(packet[13])) + "%"
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dbusservice["/Info/Soc"] = BMS_STATUS['bms']['soc']['text']
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dbusservice["/Raw/Info/Soc"] = BMS_STATUS['bms']['soc']['value']
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# update timestamp
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current_date = datetime.datetime.now()
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BMS_STATUS['bms']['timestamp']['value'] = time.time()
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BMS_STATUS['bms']['timestamp']['text'] = current_date.strftime('%a %d.%m.%Y %H:%M:%S')
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dbusservice["/Info/UpdateTimestamp"] = BMS_STATUS['bms']['timestamp']['text']
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dbusservice["/Raw/Info/UpdateTimestamp"] = BMS_STATUS['bms']['timestamp']['value']
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# print (BMS_STATUS)
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logging.info("BMS status [SOC|" + BMS_STATUS['bms']['soc']['text'] +
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"][MODE|" + BMS_STATUS['bms']['current_mode']['text'] +
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"][CURRENT|" + BMS_STATUS['bms']['current']['text'] +
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"][T1|" + BMS_STATUS['bms']['temperature']['sensor_t1']['text'] +
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"][T2|" + BMS_STATUS['bms']['temperature']['sensor_t1']['text'] +
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"][MAX CHARGE VOLTAGE|" + BMS_STATUS['bms']['charged_end_voltage']['text'] + "]")
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else:
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logging.info("Packet Checksum wrong, skip packet")
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# strip packet
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packet = packet[packet_length:]
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elif (ord(packet[2]) == PACKET_STATUS_CELLS):
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if (len(packet) < PACKET_LENGTH_STATUS_CELLS):
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logging.debug("Packet Status Cells too short, skip")
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packet = ""
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else:
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logging.debug("Packet Status Cells")
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# checksum value
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checksum = ord(packet[37])
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# calculate checksum
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checksum_check = (ord(packet[0])
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+ ord(packet[1])
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+ ord(packet[2])
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+ ord(packet[3])
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+ ord(packet[4])
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+ ord(packet[5])
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+ ord(packet[6])
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+ ord(packet[7])
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+ ord(packet[8])
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+ ord(packet[9])
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+ ord(packet[10])
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+ ord(packet[11])
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+ ord(packet[12])
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+ ord(packet[13])
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+ ord(packet[14])
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+ ord(packet[15])
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+ ord(packet[16])
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+ ord(packet[17])
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+ ord(packet[18])
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+ ord(packet[19])
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+ ord(packet[20])
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+ ord(packet[21])
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+ ord(packet[22])
|
|
+ ord(packet[23])
|
|
+ ord(packet[24])
|
|
+ ord(packet[25])
|
|
+ ord(packet[26])
|
|
+ ord(packet[27])
|
|
+ ord(packet[28])
|
|
+ ord(packet[29])
|
|
+ ord(packet[30])
|
|
+ ord(packet[31])
|
|
+ ord(packet[32])
|
|
+ ord(packet[33])
|
|
+ ord(packet[34])
|
|
+ ord(packet[35])
|
|
+ ord(packet[36])) % 256
|
|
logging.debug("Packet Checksum : " + str(checksum) + "|" + str(checksum_check))
|
|
|
|
# data integrity does match
|
|
if (checksum == checksum_check):
|
|
|
|
|
|
# cell voltages
|
|
BMS_STATUS['cells']['cell1_voltage']['value'] = get_voltage_value(ord(packet[4]), ord(packet[5]))
|
|
BMS_STATUS['cells']['cell1_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell1_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell1"] = BMS_STATUS['cells']['cell1_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell1"] = BMS_STATUS['cells']['cell1_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell2_voltage']['value'] = get_voltage_value(ord(packet[6]), ord(packet[7]))
|
|
BMS_STATUS['cells']['cell2_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell2_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell2"] = BMS_STATUS['cells']['cell2_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell2"] = BMS_STATUS['cells']['cell2_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell3_voltage']['value'] = get_voltage_value(ord(packet[8]), ord(packet[9]))
|
|
BMS_STATUS['cells']['cell3_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell3_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell3"] = BMS_STATUS['cells']['cell3_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell3"] = BMS_STATUS['cells']['cell3_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell4_voltage']['value'] = get_voltage_value(ord(packet[10]), ord(packet[11]))
|
|
BMS_STATUS['cells']['cell4_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell4_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell4"] = BMS_STATUS['cells']['cell4_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell4"] = BMS_STATUS['cells']['cell4_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell5_voltage']['value'] = get_voltage_value(ord(packet[12]), ord(packet[13]))
|
|
BMS_STATUS['cells']['cell5_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell5_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell5"] = BMS_STATUS['cells']['cell5_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell5"] = BMS_STATUS['cells']['cell5_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell6_voltage']['value'] = get_voltage_value(ord(packet[14]), ord(packet[15]))
|
|
BMS_STATUS['cells']['cell6_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell6_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell6"] = BMS_STATUS['cells']['cell6_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell6"] = BMS_STATUS['cells']['cell6_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell7_voltage']['value'] = get_voltage_value(ord(packet[16]), ord(packet[17]))
|
|
BMS_STATUS['cells']['cell7_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell7_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell7"] = BMS_STATUS['cells']['cell7_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell7"] = BMS_STATUS['cells']['cell7_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell8_voltage']['value'] = get_voltage_value(ord(packet[18]), ord(packet[19]))
|
|
BMS_STATUS['cells']['cell8_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell8_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell8"] = BMS_STATUS['cells']['cell8_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell8"] = BMS_STATUS['cells']['cell8_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell9_voltage']['value'] = get_voltage_value(ord(packet[20]), ord(packet[21]))
|
|
BMS_STATUS['cells']['cell9_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell9_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell9"] = BMS_STATUS['cells']['cell9_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell9"] = BMS_STATUS['cells']['cell9_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell10_voltage']['value'] = get_voltage_value(ord(packet[22]), ord(packet[23]))
|
|
BMS_STATUS['cells']['cell10_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell10_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell10"] = BMS_STATUS['cells']['cell10_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell10"] = BMS_STATUS['cells']['cell10_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell11_voltage']['value'] = get_voltage_value(ord(packet[24]), ord(packet[25]))
|
|
BMS_STATUS['cells']['cell11_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell11_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell11"] = BMS_STATUS['cells']['cell11_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell11"] = BMS_STATUS['cells']['cell11_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell12_voltage']['value'] = get_voltage_value(ord(packet[26]), ord(packet[27]))
|
|
BMS_STATUS['cells']['cell12_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell12_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell12"] = BMS_STATUS['cells']['cell12_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell12"] = BMS_STATUS['cells']['cell12_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell13_voltage']['value'] = get_voltage_value(ord(packet[28]), ord(packet[29]))
|
|
BMS_STATUS['cells']['cell13_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell13_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell13"] = BMS_STATUS['cells']['cell13_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell13"] = BMS_STATUS['cells']['cell13_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell14_voltage']['value'] = get_voltage_value(ord(packet[30]), ord(packet[31]))
|
|
BMS_STATUS['cells']['cell14_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell14_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell14"] = BMS_STATUS['cells']['cell14_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell14"] = BMS_STATUS['cells']['cell14_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell15_voltage']['value'] = get_voltage_value(ord(packet[32]), ord(packet[33]))
|
|
BMS_STATUS['cells']['cell15_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell15_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell15"] = BMS_STATUS['cells']['cell15_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell15"] = BMS_STATUS['cells']['cell15_voltage']['value']
|
|
|
|
BMS_STATUS['cells']['cell16_voltage']['value'] = get_voltage_value(ord(packet[34]), ord(packet[35]))
|
|
BMS_STATUS['cells']['cell16_voltage']['text'] = "{:.3f}".format(BMS_STATUS['cells']['cell16_voltage']['value']) + "V"
|
|
dbusservice["/Voltages/Cell16"] = BMS_STATUS['cells']['cell16_voltage']['text']
|
|
dbusservice["/Raw/Voltages/Cell16"] = BMS_STATUS['cells']['cell16_voltage']['value']
|
|
|
|
# capacity value
|
|
BMS_STATUS['cells']['capacity']['value'] = ord(packet[36])
|
|
BMS_STATUS['cells']['capacity']['text'] = str(ord(packet[36])) + "Ah"
|
|
dbusservice["/Info/Capacity"] = BMS_STATUS['cells']['capacity']['text']
|
|
dbusservice["/Raw/Info/Capacity"] = BMS_STATUS['cells']['capacity']['value']
|
|
|
|
# get min/max voltages to calculate the diff
|
|
cell_voltages = []
|
|
|
|
if (BMS_STATUS['cells']['cell1_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell1_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell2_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell2_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell3_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell3_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell4_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell4_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell5_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell5_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell6_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell6_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell7_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell7_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell8_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell8_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell9_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell9_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell10_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell10_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell11_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell11_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell12_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell12_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell13_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell13_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell14_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell14_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell15_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell15_voltage']['value'])
|
|
if (BMS_STATUS['cells']['cell16_voltage']['value'] > MIN_CELL_VOLTAGE):
|
|
cell_voltages.append(BMS_STATUS['cells']['cell16_voltage']['value'])
|
|
|
|
BMS_STATUS['cells']['agg_voltages']['sum']['value'] = sum(cell_voltages)
|
|
BMS_STATUS['cells']['agg_voltages']['sum']['text'] = "{:.2f}".format(BMS_STATUS['cells']['agg_voltages']['sum']['value']) + "V"
|
|
BMS_STATUS['cells']['agg_voltages']['max']['value'] = max(cell_voltages)
|
|
BMS_STATUS['cells']['agg_voltages']['max']['text'] = "{:.3f}".format(BMS_STATUS['cells']['agg_voltages']['max']['value']) + "V"
|
|
BMS_STATUS['cells']['agg_voltages']['min']['value'] = min(cell_voltages)
|
|
BMS_STATUS['cells']['agg_voltages']['min']['text'] = "{:.3f}".format(BMS_STATUS['cells']['agg_voltages']['min']['value']) + "V"
|
|
BMS_STATUS['cells']['agg_voltages']['diff']['value'] = BMS_STATUS['cells']['agg_voltages']['max']['value'] - BMS_STATUS['cells']['agg_voltages']['min']['value']
|
|
BMS_STATUS['cells']['agg_voltages']['diff']['text'] = "{:.0f}".format(BMS_STATUS['cells']['agg_voltages']['diff']['value'] * 1000) + "mV"
|
|
|
|
dbusservice["/Voltages/Sum"] = BMS_STATUS['cells']['agg_voltages']['sum']['text']
|
|
dbusservice["/Raw/Voltages/Sum"] = BMS_STATUS['cells']['agg_voltages']['sum']['value']
|
|
dbusservice["/Voltages/Max"] = BMS_STATUS['cells']['agg_voltages']['max']['text']
|
|
dbusservice["/Raw/Voltages/Max"] = BMS_STATUS['cells']['agg_voltages']['max']['value']
|
|
dbusservice["/Voltages/Min"] = BMS_STATUS['cells']['agg_voltages']['min']['text']
|
|
dbusservice["/Raw/Voltages/Min"] = BMS_STATUS['cells']['agg_voltages']['min']['value']
|
|
dbusservice["/Voltages/Diff"] = BMS_STATUS['cells']['agg_voltages']['diff']['text']
|
|
dbusservice["/Raw/Voltages/Diff"] = BMS_STATUS['cells']['agg_voltages']['diff']['value']
|
|
|
|
|
|
# update timestamp
|
|
current_date = datetime.datetime.now()
|
|
BMS_STATUS['cells']['timestamp']['value'] = time.time()
|
|
BMS_STATUS['cells']['timestamp']['text'] = current_date.strftime('%a %d.%m.%Y %H:%M:%S')
|
|
dbusservice["/Voltages/UpdateTimestamp"] = BMS_STATUS['cells']['timestamp']['text']
|
|
dbusservice["/Raw/Voltages/UpdateTimestamp"] = BMS_STATUS['cells']['timestamp']['value']
|
|
|
|
|
|
# print (BMS_STATUS)
|
|
logging.info("BMS cells [DIFF|" + BMS_STATUS['cells']['agg_voltages']['diff']['text'] +
|
|
"][SUM|" + BMS_STATUS['cells']['agg_voltages']['sum']['text'] +
|
|
"][#1|" + BMS_STATUS['cells']['cell1_voltage']['text'] +
|
|
"][#2|" + BMS_STATUS['cells']['cell2_voltage']['text'] +
|
|
"][#3|" + BMS_STATUS['cells']['cell3_voltage']['text'] +
|
|
"][#4|" + BMS_STATUS['cells']['cell4_voltage']['text'] +
|
|
"][#5|" + BMS_STATUS['cells']['cell5_voltage']['text'] +
|
|
"][#6|" + BMS_STATUS['cells']['cell6_voltage']['text'] + "]")
|
|
|
|
else:
|
|
logging.debug("Packet Checksum wrong, skip packet")
|
|
|
|
# strip packet
|
|
packet = packet[packet_length:]
|
|
|
|
else:
|
|
# debug_packet(packet)
|
|
logging.debug("Packet Unknown [1]")
|
|
packet = ""
|
|
|
|
else:
|
|
logging.debug("Packet Unknown [2]")
|
|
packet = ""
|
|
else:
|
|
logging.debug("Packet to short")
|
|
packet = ""
|
|
|
|
|
|
def handle_serial_data():
|
|
#try:
|
|
serial_packet = ""
|
|
if (serial_port.in_waiting > 0):
|
|
logging.debug("Data Waiting [" + str(serial_port.in_waiting) + " bytes]")
|
|
if (serial_port.in_waiting >= (PACKET_LENGTH_MINIMUM * 2)):
|
|
data_buffer_array = serial_port.read(serial_port.in_waiting)
|
|
logging.debug("Data Received [" + str(len(data_buffer_array)) + " bytes]")
|
|
for data_buffer in data_buffer_array:
|
|
serial_packet += data_buffer
|
|
|
|
if (len(serial_packet) > 0):
|
|
parse_packet(serial_packet)
|
|
|
|
data_buffer_array = ""
|
|
serial_packet = ""
|
|
#except KeyboardInterrupt:
|
|
# raise
|
|
#except:
|
|
# logging.debug("Exception")
|
|
|
|
# recheck every second
|
|
gobject.timeout_add(1000, handle_serial_data)
|
|
|
|
|
|
gobject.timeout_add(1000, handle_serial_data)
|
|
mainloop = gobject.MainLoop()
|
|
mainloop.run()
|