104 lines
3.2 KiB
Python
Executable File
104 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
'''
|
|
The app will try to start charging
|
|
|
|
and show the charger voltage, battery voltage and charging current
|
|
stop charging in 30 seconds
|
|
'''
|
|
from minimalmodbus import Instrument, MODE_RTU
|
|
import sys
|
|
import time
|
|
|
|
VERSION = '0.2.0'
|
|
UNIT = 16
|
|
|
|
MODBUS_FC_READ_SINGLE_COIL = int("0x01", 16)
|
|
MODBUS_FC_READ_SINGLE_DISCRETE = int("0x02", 16)
|
|
MODBUS_FC_READ_HOLDING_REGISTERS = int("0x03", 16)
|
|
MODBUS_FC_READ_INPUT_REGISTERS = int("0x04", 16)
|
|
MODBUS_FC_WRITE_SINGLE_REGISTER = int("0x06", 16)
|
|
|
|
enable_charger_address = 0
|
|
charger_voltage_adddress = 30
|
|
batery_voltage_address = 32
|
|
current_address = 31
|
|
|
|
|
|
def monitor_charger(instrument, interval=1, duration=30):
|
|
"""
|
|
Monitor the charger voltage, battery voltage and current for a given duration.
|
|
"""
|
|
t = 0
|
|
while t < duration:
|
|
try:
|
|
charger_voltage = instrument.read_registers(registeraddress=charger_voltage_adddress,
|
|
number_of_registers=1,
|
|
functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
|
|
battery_voltage = instrument.read_registers(registeraddress=batery_voltage_address,
|
|
number_of_registers=1,
|
|
functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
|
|
current = instrument.read_registers(registeraddress=current_address,
|
|
number_of_registers=1,
|
|
functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
|
|
|
|
print(
|
|
f'Time: {t}s - Charger Voltage: {charger_voltage[0]}({charger_voltage[0] / 128:.2f} V ) '
|
|
f'Battery Voltage: {battery_voltage[0]}({battery_voltage[0] / 128:.2f} V ) '
|
|
f'Current: {current[0]}({current[0] / 128:.2f} A )')
|
|
sys.stdout.flush()
|
|
except Exception as e:
|
|
print(f'Error reading registers: {e}')
|
|
pass
|
|
time.sleep(interval)
|
|
t += interval
|
|
print()
|
|
|
|
|
|
def run():
|
|
|
|
import argparse
|
|
|
|
parser = argparse.ArgumentParser(description='xnergy charger control demo')
|
|
|
|
parser.add_argument('port', type=str, help='The serial port(RS485) that connect to xnergy RCU')
|
|
parser.add_argument('-i',
|
|
'--interval',
|
|
type=int,
|
|
default=1800,
|
|
help='The interval time in seconds to on/off the charger, default is 1800 seconds')
|
|
parser.add_argument('-r',
|
|
'--repeat',
|
|
type=int,
|
|
default=1,
|
|
help='The number of times to repeat the charging cycle, default is 1')
|
|
|
|
# parser.add_argument('-P', '--parallel', type=int, nargs='*', choices=(17, 18, 19),
|
|
# help='set to parallel mode, parameter is the unit id, can be used multiple times')
|
|
|
|
parser.add_argument('-q', '--quiet', action='store_true', help='quiet mode, suppress all output')
|
|
parser.add_argument('-v', '--version', action='version', version=f'%(prog)s {VERSION}')
|
|
args = parser.parse_args()
|
|
|
|
instrument = Instrument(port=args.port, mode=MODE_RTU, slaveaddress=UNIT, debug=not args.quiet)
|
|
instrument.serial.baudrate = 9600
|
|
|
|
print(f'Start Charging, will start/stop charging {args.repeat} times in {args.interval} seconds')
|
|
|
|
counter = 0
|
|
while counter <= args.repeat:
|
|
# start charging
|
|
instrument.write_bit(registeraddress=enable_charger_address, value=1)
|
|
monitor_charger(instrument, duration=args.interval)
|
|
print()
|
|
# stop charging
|
|
instrument.write_bit(registeraddress=enable_charger_address, value=0)
|
|
monitor_charger(instrument, duration=args.interval)
|
|
print()
|
|
counter += 1
|
|
print(f'Charging cycle {counter} completed.')
|
|
|
|
|
|
if __name__ == "__main__":
|
|
run()
|