288 lines
7.6 KiB
Python
288 lines
7.6 KiB
Python
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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import time
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import serial, sys
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import os
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from datetime import datetime
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from bitstring import BitArray
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serial_timeout=0.1
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byte3=0
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byte4=0
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byte5=0
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byte6=0
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i=0
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pvfaultdesc = [0]*8
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pvfaultdesc[0]="load short-circuit protection"
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pvfaultdesc[1]="load overcurrent protection"
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pvfaultdesc[2]="battery low-voltage protection"
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pvfaultdesc[3]="reserved"
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pvfaultdesc[4]="solar panel array1 open-circuit breakdown(it means the controller does not detect the solar panel voltage within 24h)"
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pvfaultdesc[5]="solar panel array1 over-voltage protection"
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pvfaultdesc[6]="delayed protection phase for load overcurrent"
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pvfaultdesc[7]="shut the load compulsively"
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def pvstatusbit(bit):
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if bit == '1':
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print("gesetzt :%s" % bit)
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else:
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print("nicht gesetzt :%s" % bit)
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def pvstatus():
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# current status of system
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x61\x00\x00\x00\x00\xBD"
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global byte3
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global byte4
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del byte3
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del byte4
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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ser.close()
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if (
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len(byte3) > 0 and len(byte4) > 0
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):
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byte3=byte3.encode('hex')
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bitstring1=BitArray(hex=byte3)
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# sys.stdout.write('Inputstring:\t')
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# sys.stdout.write(bitstring1.bin)
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# sys.stdout.write('\n')
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pvfaultstate(bitstring1.bin)
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sys.stdout.write('\n')
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else :
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sys.stdout.write('Voltage communication error!')
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def pvfaultstate(bytearray):
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global pvfaultdesc
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# print("Inputstring Funktion:\t %s" %bytearray)
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i=0
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arraylen=len(bytearray)
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# print (" Array ist %s Elemente lang" %(arraylen))
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while i <=arraylen-1:
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if bytearray[i] =='1':
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print("Fehler aktiv: %s (Byte: %s)" % (pvfaultdesc[i], i) )
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#pvstatusbit(bytearray[i])
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if i<=arraylen: i=i+1
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# last anschalten
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def pvswitch(state):
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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if state == 0:
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command = "\x01\x55\x00\x00\x00\x00\x26" #last aus
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print ("demanding controller removing closing the load compulsively")
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else:
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command = "\x01\x54\x00\x00\x00\x00\xF5" #last an
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print ("demanding controller closing the loads compulsively")
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ser.write(command)
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ser.close()
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def get_PV_Ah():
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x05\x00\x00\x00\x00\x9B" # the back transmission data from the controlleris the accumulative generating power data of solar panel array1(Ah, DC/DC output), and the data are the long data shaping with symbol, and the accumulative Ah scaling is 1Ah/LSB.
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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byte5=ser.read(1)
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byte6=ser.read(1)
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ser.close()
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print ("PV: \t\t\t %s Ah" % (BitArray(hex=byte6.encode('hex'))+BitArray(hex=byte5.encode('hex'))+BitArray(hex=byte4.encode('hex'))+BitArray(hex=byte3.encode('hex'))).uint)
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def get_load_Ah():
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x16\x00\x00\x00\x00\xA3" # the back transmission data from the controlleris the accumulative generating power data of solar panel array1(Ah, DC/DC output), and the data are the long data shaping with symbol, and the accumulative Ah scaling is 1Ah/LSB.
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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byte5=ser.read(1)
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byte6=ser.read(1)
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ser.close()
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print ("Load: \t\t\t %s Ah" % (BitArray(hex=byte6.encode('hex'))+BitArray(hex=byte5.encode('hex'))+BitArray(hex=byte4.encode('hex'))+BitArray(hex=byte3.encode('hex'))).uint)
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while True:
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try:
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now = datetime.now()
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os.system('clear')
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print(now)
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# pvswitch(1)
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# battery voltage
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x10\x00\x00\x00\x00\x2B"
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del byte3
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del byte4
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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ser.close()
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if (
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len(byte3) > 0 and len(byte4) > 0
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):
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value1=ord(byte3)
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value2=ord(byte4)
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voltage=(value2 * 256 + value1) / 100
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voltage_modulo=(value2 * 256 + value1) % 100
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sys.stdout.write('BATTERY:\t\t')
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sys.stdout.write(str(voltage))
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sys.stdout.write('.')
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sys.stdout.write(str(voltage_modulo))
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sys.stdout.write(' V\n')
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else :
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sys.stdout.write('Voltage communication error!')
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# pv voltage/current
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x01\x00\x00\x00\x00\x84"
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del byte3
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del byte4
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del byte5
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del byte6
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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byte5=ser.read(1)
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byte6=ser.read(1)
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ser.close()
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value1=ord(byte3)
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value2=ord(byte4)
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value3=ord(byte5)
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value4=ord(byte6)
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voltage=(value2 * 256 + value1) / 100
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voltage_modulo=(value2 * 256 + value1) % 100
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current=(value4 *256 + value3) / 100
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current_modulo=(value4 * 256 + value3) % 100
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sys.stdout.write('PV INPUT:\t\t')
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sys.stdout.write(str(voltage))
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sys.stdout.write('.')
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sys.stdout.write(str(voltage_modulo))
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sys.stdout.write(' V')
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sys.stdout.write('\t')
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sys.stdout.write(str(current))
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sys.stdout.write('.')
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sys.stdout.write(str(current_modulo))
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sys.stdout.write(' A \n')
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# current load
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x14\x00\x00\x00\x00\x34"
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del byte3
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del byte4
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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ser.close()
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value1=ord(byte3)
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value2=ord(byte4)
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current=(value2 * 256 + value1) / 100
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current_modulo=(value2 * 256 + value1) % 100
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sys.stdout.write('LOAD:\t\t\t\t')
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sys.stdout.write(str(current))
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sys.stdout.write('.')
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sys.stdout.write(str(current_modulo))
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sys.stdout.write(' A\n')
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# temperature & battery capacity
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ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=serial_timeout)
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command = "\x01\x11\x00\x00\x00\x00\xF8"
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del byte3
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del byte4
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del byte5
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del byte6
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ser.flushInput() #clear buffer
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ser.write(command) #send prepared command
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skip=ser.read(2) #skip first two bytes
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byte3=ser.read(1)
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byte4=ser.read(1)
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byte5=ser.read(1)
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byte6=ser.read(1)
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ser.close()
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value1=ord(byte3)
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value2=ord(byte4)
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value3=ord(byte5)
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value4=ord(byte6)
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temperature=(value2 * 256 + value1)
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capacity=(value4 * 256 + value3)
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sys.stdout.write('Temperature:\t\t\t\t')
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sys.stdout.write(str(temperature))
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sys.stdout.write(' °C\n')
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sys.stdout.write('Battery Capacity:\t\t\t')
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sys.stdout.write(str(capacity))
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sys.stdout.write(' %\n')
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print("\n\naktive Fehler:")
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pvstatus()
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get_PV_Ah()
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get_load_Ah()
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# sleep 10 seconds before starting over
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time.sleep(10)
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except KeyboardInterrupt:
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print("\n\nkilled via CTRL+C - Bye")
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#pvswitch(0) #last ausschalten
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sys.exit()
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