mirror of
https://github.com/suaveolent/hoymiles-wifi.git
synced 2024-09-20 11:20:11 +00:00
72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
import socket
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import struct
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from hoymiles_wifi import logger
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from hoymiles_wifi.protos.RealData_pb2 import RealDataResDTO, HMSStateResponse
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from crcmod import mkCrcFun
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from datetime import datetime
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import time
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INVERTER_PORT = 10081
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class NetworkState:
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Unknown = 0
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Online = 1
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Offline = 2
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class Inverter:
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def __init__(self, host):
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self.host = host
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self.state = NetworkState.Unknown
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self.sequence = 0
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def set_state(self, new_state):
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if self.state != new_state:
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self.state = new_state
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logger.info(f"Inverter is {new_state}")
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def update_state(self):
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self.sequence = (self.sequence + 1) & 0xFFFF
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request = RealDataResDTO()
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# date = datetime.now()
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# time_string = date.strftime("%Y-%m-%d %H:%M:%S")
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# request.ymd_hms = time_string
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# request.cp = 23 + self.sequence
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# request.offset = 0
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# request.time = int(time.time())
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header = b"\x48\x4d\xa3\x03"
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request_as_bytes = request.SerializeToString()
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crc16 = mkCrcFun(0x18005, rev=True, initCrc=0xFFFF, xorOut=0x0000)(request_as_bytes)
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length = len(request_as_bytes) + 10
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# compose request message
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message = header + struct.pack('>HHHH', self.sequence, crc16, length, 0) + request_as_bytes
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address = (self.host, INVERTER_PORT)
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try:
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with socket.create_connection(address, timeout=0.5) as stream:
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stream.settimeout(5)
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stream.sendall(message)
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buf = stream.recv(1024)
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except (socket.error, socket.timeout) as e:
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logger.debug(f"{e}")
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self.set_state(NetworkState.Offline)
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return None
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read_length = struct.unpack('>H', buf[6:8])[0]
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try:
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parsed = HMSStateResponse.FromString(buf[10:10+read_length])
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if not parsed:
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raise ValueError("Parsing resulted in an empty or falsy value")
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except Exception as e:
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logger.debug(f"Failed to parse response: {e}")
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self.set_state(NetworkState.Offline)
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return None
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self.set_state(NetworkState.Online)
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return parsed
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