denis
382 lines
12 KiB
Python
382 lines
12 KiB
Python
#!/usr/bin/python
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# -* coding: utf-8 *-
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Developed 2009-2010 by Bernd Wurst <bernd@schokokeks.org>
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# for own use.
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# Released to the public in 2012.
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import socket, datetime, logging
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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# Constantes
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inverter_types = {
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20010: { 'desc': 'SolarMax 2000S', 'max': 2000, }, # Juste deviner
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20020: { 'desc': 'SolarMax 3000S', 'max': 3000, },
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20030: { 'desc': 'SolarMax 4200S', 'max': 4200, },
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20040: { 'desc': 'SolarMax 6000S', 'max': 6000, },
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}
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query_types = [
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'KDY', 'KYR', 'KMT', 'KT0', 'IL1', 'IDC', 'PAC', 'PRL',
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'SYS', 'SAL', 'TNF', 'PAC', 'PRL', 'TKK', 'UL1', 'UDC',
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'ADR', 'TYP', 'PIN', 'MAC', 'CAC', 'KHR', 'EC00', 'EC01',
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'EC02', 'EC03', 'EC04', 'EC05', 'EC06', 'EC07', 'EC08',
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'BDN', 'SWV', 'DIN', 'LAN', 'SDAT', 'FDAT'
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]
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status_codes = {
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20000: 'Pas de communication',
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20001: 'En cours d\'utilisation',
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20002: 'Trop peu de rayonnement',
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20003: 'Démarrage',
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20004: 'Opération sur MPP',
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20005: 'Le ventilateur tourne',
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20006: 'Fonctionnement à puissance maximale',
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20007: 'Limite de température',
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20008: 'Fonctionnement sur secteur',
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}
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alarm_codes = {
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0: "pas d'erreur",
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1: "Erreur externe 1",
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2: "Erreur d'isolement côté DC",
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4: "Courant de défaut à la terre trop important",
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8: "Rupture du fusible de la protection terre",
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16: "Alarme externe 2",
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32: "Limitation de température à long terme",
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64: "Erreur alimentation CA",
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128: "Alarme externe 4",
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256: "Ventilateur défectueux",
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512: "Casser le fusible",
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1024: "Défaillance du capteur de température",
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2048: "Alarme 12",
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4096: "Alarme 13",
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8192: "Alarme 14",
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16384: "Alarme 15",
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32768: "Alarme 16",
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65536: "Alarme 17",
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}
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# Hilfs-Routine (DEBUG)
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def DEBUG(*s):
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out = [datetime.datetime.now().isoformat()+':',] + [str(x) for x in s]
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#print(' '.join(out))
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logger.debug(' '.join(out))
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def get_status_code(v):
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for i in status_codes:
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if status_codes[i]==v:
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return i
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return None
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####################################
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## main class
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####################################
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class SolarMax ( object ):
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def __init__(self, host, port):
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self.__host = host
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self.__port = port
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self.__inverters = {}
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self.__socket = None
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self.__connected = False
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self.__allinverters = False
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self.__inverter_list = []
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self.__connect()
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def __repr__(self):
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return 'SolarMax[%s:%s / socket=%s]' % (self.__host, self.__port, self.__socket)
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def __str__(self):
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return 'SolarMax[%s:%s / socket=%s / inverters=%s]' % (self.__host, self.__port, self.__socket, self.inverters())
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def __disconnect(self):
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try:
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DEBUG('Closing open connection to %s:%s' % (self.__host, self.__port))
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self.__socket.shutdown(socket.SHUT_RDWR)
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self.__socket.close()
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del self.__socket
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except:
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pass
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finally:
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self.__connected = False
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self.__allinverters = False
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self.__socket = None
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def __del__(self):
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DEBUG('destructor called')
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self.__disconnect()
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def __connect(self):
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self.__disconnect()
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DEBUG('establishing connection to %s:%i...' % (self.__host, self.__port))
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try:
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self.__socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.__socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s = self.__socket
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s.settimeout(2)
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s.connect((self.__host, self.__port))
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s.settimeout(10)
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self.__connected = True
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DEBUG('connected.')
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except:
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DEBUG('connection to %s:%i failed' % (self.__host, self.__port))
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self.__connected = False
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self.__allinverters = False
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# Utility-functions
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def hexval(self, i):
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return (hex(i)[2:]).upper()
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def checksum(self, s):
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total = 0
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for c in s:
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total += ord(c)
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h = self.hexval(total)
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while len(h) < 4:
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h = '0'+h
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return h
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def __read_char(self):
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byte = self.__socket.recv(1)
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if len(byte) > 0:
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return ord(byte) & 0x7F
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return 0
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def __receive(self):
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try:
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data = []
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while True:
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c = self.__read_char()
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if c:
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data.append(chr(c))
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if not c or chr(c) == '}':
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break
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return ''.join(data)
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except:
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self.__allinverters = False
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return ''
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def __parse(self, answer):
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# convenience checks
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if answer[0] != '{' or answer[-1] != '}':
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raise ValueError('malformed answer: %s' % answer)
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raw_answer = answer
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answer = answer[1:-1]
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checksum = answer[-4:]
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content = answer[:-4]
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# checksum
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if checksum != self.checksum(content):
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raise ValueError('checksum error')
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(header, content) = content[:-1].split('|', 2)
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(inverter, fb, length) = header.split(';', 3)
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if fb != 'FB':
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raise ValueError('answer not understood')
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# length
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length = int(length, 16)
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if length != len(raw_answer):
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raise ValueError('length mismatch')
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inverter = int(inverter)
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# Bei schreibzugriff antwortet der WR mit 'C8'
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# Avec un accès en écriture, le WR répond par 'C8'
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#if not content.startswith('64:'):
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# raise ValueError('Inverter did not understand our query')
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content = content[3:]
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data = {}
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for item in content.split(';'):
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(key, value) = item.split('=')
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if key not in query_types:
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raise NotImplementedError("Don't know %s" % item)
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data[key] = value
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return (inverter, data)
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def __build_query(self, idn, values, qtype=100):
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qtype = self.hexval(qtype)
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if type(values) == list:
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for v in values:
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if v not in query_types:
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raise ValueError('Unknown data type »'+v+'«')
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values = ';'.join(values)
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#elif type(values) in [str, unicode]:
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elif type(values) in [str,]:
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pass
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else:
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raise ValueError('value has unsupported type')
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querystring = '|' + qtype + ':' + values + '|'
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# Länge vergrößern um: 2 x { (2), WR-Nummer (2), "FB" (2), zwei Semikolon (2), Länge selbst (2), checksumme (4)
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# Augmentez la longueur de : 2 x { (2), le numéro WR (2), "FB" (2), deux points-virgules (2), la longueur elle-même (2), la somme de contrôle (4)
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l = len(querystring) + 2 + 2 + 2 + 2 +2 + 4
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querystring = 'FB;%02i;%s%s' % (int(idn), self.hexval(l), querystring)
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querystring += self.checksum(querystring)
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return '{%s}' % querystring
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def __send_query(self, querystring):
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try:
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DEBUG(self.__host, '=>', querystring)
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#self.__socket.send(querystring)
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self.__socket.send(querystring.encode())
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except socket.timeout:
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self.__allinverters = False
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self.__connected = False
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def query(self, idn, values, qtype=100):
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q = self.__build_query(idn, values, qtype)
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DEBUG("WR %i: %s" % (idn, q))
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self.__send_query(q)
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answer = self.__receive()
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if answer:
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(inverter, data) = self.__parse(answer)
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for d in data.keys():
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data[d] = self.normalize_value(d, data[d])
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return (inverter, data)
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else:
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self.__allinverters = False
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if not self.__allinverters and not self.__detection_running:
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self.detect_inverters()
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elif not self.__connected:
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self.__connect()
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else:
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raise socket.timeout
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return None
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def normalize_value(self, key, value):
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if key in [ 'KDY', 'UL1', 'UDC']:
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return float(int(value, 16)/10)
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elif key in [ 'IL1', 'IDC', 'TNF', ]:
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return float(int(value, 16)/100)
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elif key in [ 'PAC', 'PIN', ]:
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return float(int(value, 16)/2)
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elif key in [ 'SAL', ]:
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return int(value, 16)
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elif key in [ 'SYS', ]:
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(x,y) = value.split(',',2)
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x = int(x, 16)
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y = int(y, 16)
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return (x,y)
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elif key in [ 'SDAT', 'FDAT' ]:
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(date, time) = value.split(',',2)
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time = int(time, 16)
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return datetime.datetime(int(date[:3], 16), int(date[3:5], 16), int(date[5:], 16), time//3600, (time % 3600) // 60, time % (3600*60))
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else:
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return int(value, 16)
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def write_setting(self, inverter, data):
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rawdata = []
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for key,value in data.iteritems():
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key = key.upper()
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if key not in query_types:
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raise ValueError('unknown type')
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value = self.hexval(value)
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rawdata.append('%s=%s' % (key, value))
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DEBUG(self.query(inverter, ';'.join(rawdata), 200))
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def status(self, inverter):
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result = self.query(inverter, ['SYS', 'SAL'])
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if not result:
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return ('Offline', 'Offline')
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result = result[1]
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errors = []
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if result['SAL'] > 0:
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for (code, descr) in alarm_codes.iteritems():
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if code & result['SAL']:
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errors.append(descr)
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status = status_codes[result['SYS'][0]]
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return (status, ', '.join(errors))
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def use_inverters(self, list_of):
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self.__inverter_list = list_of
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self.detect_inverters()
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def detect_inverters(self):
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self.__inverters = {}
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if not self.__connected:
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self.__connect()
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self.__detection_running = True
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for inverter in self.__inverter_list:
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try:
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DEBUG('searching for #%i (socket: %s)' % (inverter, self.__socket))
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(inverter, data) = self.query(inverter, [ 'ADR', 'TYP', 'PIN' ])
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if data['TYP'] in inverter_types.keys():
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self.__inverters[inverter] = inverter_types[data['TYP']].copy()
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self.__inverters[inverter]['installed'] = data['PIN']
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else:
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DEBUG('Unknown inverter type: %s (ID #%i)' % (data['TYP'], data['ADR']))
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except Exception as e:
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DEBUG('Inverter #%i not found: %s' % (inverter, e))
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self.__allinverters = False
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self.__detection_running = False
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if len(self.__inverters) == len(self.__inverter_list):
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self.__allinverters = True
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DEBUG('found all inverters:')
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DEBUG(self.__inverters)
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else:
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DEBUG('not all invertes found, reconnection!')
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self.__connect()
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def inverters(self):
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if not self.__allinverters:
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self.detect_inverters()
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return self.__inverters
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