vemppt_main.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

"""
    This file is part of vemppt_reader.

    vemppt_reader is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    vemppt_reader is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with vemppt_reader.  If not, see <https://www.gnu.org/licenses/>.
"""

import vemppt_parser        #Text parse script
import vemppt_register      #Data register script

import logging                  #Log errors
import serial                   #Read VEDirect data via serial USB
import ctypes                   #To use MessageBoxW
import time                     #Reading periods
from datetime import datetime   #Register local dates

def Mbox(title, text, style):
    return ctypes.windll.user32.MessageBoxW(0, text, title, style)

def main():
    #Value reset
    line = 0                            #Initial line in vemppt_register
    initial_date = datetime.now()       #Date register for xls file

    #Main thread
    try:
        ser = serial.Serial('COM5', 19200, timeout=10)      #Change here COM port
        Mbox("MPPT Found","Correct port communication\nData registration will begin",64)

        line = vemppt_register.xls_open(line)

        while True:
            ve_read = ser.readline()
            line = vemppt_parser.parser(ve_read,line)

    except Exception as e:
        logging.exception("An error ocurred")
        Mbox("An error ocurred","Something went wrong!",16)

    finally:
        ser.close()
        vemppt_register.xls_close(initial_date)

if __name__ == '__main__':
    main()