87 lines
3.2 KiB
Python
Executable File
87 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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'''
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The app will try to start charging
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and show the charger voltage, battery voltage and charging current
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stop charging in 30 seconds
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'''
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from minimalmodbus import Instrument, MODE_RTU
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import sys
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import time
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VERSION = '0.3.0'
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UNIT = 16
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MODBUS_FC_READ_SINGLE_COIL = int("0x01", 16)
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MODBUS_FC_READ_SINGLE_DISCRETE = int("0x02", 16)
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MODBUS_FC_READ_HOLDING_REGISTERS = int("0x03", 16)
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MODBUS_FC_READ_INPUT_REGISTERS = int("0x04", 16)
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MODBUS_FC_WRITE_SINGLE_REGISTER = int("0x06", 16)
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enable_charger_address = 0
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charger_voltage_adddress = 30
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batery_voltage_address = 32
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current_address = 31
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def monitor_charger(instrument, interval=1, duration=30):
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"""
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Monitor the charger voltage, battery voltage and current for a given duration.
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"""
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t = 0
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while t < duration:
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try:
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charger_voltage = instrument.read_registers(registeraddress=charger_voltage_adddress, number_of_registers=1, functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
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battery_voltage = instrument.read_registers(registeraddress=batery_voltage_address, number_of_registers=1, functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
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current = instrument.read_registers(registeraddress=current_address, number_of_registers=1, functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
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print(f'Time: {t}s - Charger Voltage: {charger_voltage[0]}({charger_voltage[0] / 128:.2f} V ) '
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f'Battery Voltage: {battery_voltage[0]}({battery_voltage[0] / 128:.2f} V ) '
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f'Current: {current[0]}({current[0] / 128:.2f} A )')
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sys.stdout.flush()
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except Exception as e:
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print(f'Error reading registers: {e}')
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pass
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time.sleep(interval)
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t += interval
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print()
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def run():
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import argparse
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parser = argparse.ArgumentParser(description='xnergy charger control demo')
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parser.add_argument('port', type=str, help='The serial port(RS485) that connect to xnergy RCU')
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parser.add_argument('--duration-on', type=int, default=100, help='The duration time in seconds to keep the charger on, default is 100 seconds')
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parser.add_argument('--duration-off', type=int, default=10, help='The duration time in seconds to keep the charger off, default is 10 seconds')
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parser.add_argument('-r', '--repeat', type=int, default=1, help='The number of times to repeat the charging cycle, default is 1')
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parser.add_argument('-q', '--quiet', action='store_true', help='quiet mode, suppress all output')
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parser.add_argument('-v', '--version', action='version', version=f'%(prog)s {VERSION}')
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args = parser.parse_args()
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instrument = Instrument(port=args.port, mode=MODE_RTU, slaveaddress=UNIT, debug=not args.quiet)
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instrument.serial.baudrate = 9600
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print(f'Start Charging, will start/stop charging {args.repeat} times with on duration {args.duration_on}s and off duration {args.duration_off}s')
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counter = 0
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while counter <= args.repeat:
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# start charging
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instrument.write_bit(registeraddress=enable_charger_address, value=1)
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monitor_charger(instrument, duration=args.duration_on)
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print()
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# stop charging
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instrument.write_bit(registeraddress=enable_charger_address, value=0)
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monitor_charger(instrument, duration=args.duration_off)
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print()
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counter += 1
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print(f'Charging cycle {counter} completed.')
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if __name__ == "__main__":
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run()
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