104 lines
3.1 KiB
Python
104 lines
3.1 KiB
Python
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# -*- coding: utf-8 -*-
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import struct
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from decimal import Decimal
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from functools import cached_property
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from typing import Optional
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from .interfaces import BaseInterface
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from .protocol import (
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parse_battery_state,
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parse_historical_entry,
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readMemory,
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try_read_parse,
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writeMemory,
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)
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from .solar_types import DataName
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class Srne:
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_dev: BaseInterface
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def __init__(self, dev: BaseInterface) -> None:
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self._dev = dev
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def get_historical_entry(self, day: Optional[int] = None) -> dict:
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address = 0x010B
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words = 21
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if day is not None:
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address = 0xF000 + day
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res = try_read_parse(self._dev, address, words, parse_historical_entry)
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if res is None:
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raise TimeoutError("Timeout reading historical entry")
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return res
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def run_days(self) -> int:
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return self.get_historical_entry()["run_days"]
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def get_battery_state(self) -> dict:
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data = try_read_parse(self._dev, 0x0100, 11, parse_battery_state)
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if data is None:
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raise TimeoutError("Timeout reading battery state")
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data[DataName.CALCULATED_BATTERY_POWER] = float(
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Decimal(str(data.get(DataName.BATTERY_VOLTAGE, 0)))
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* Decimal(str(data.get(DataName.BATTERY_CURRENT, 0)))
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)
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data[DataName.CALCULATED_PANEL_POWER] = float(
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Decimal(str(data.get(DataName.PANEL_VOLTAGE, 0)))
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* Decimal(str(data.get(DataName.PANEL_CURRENT, 0)))
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)
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data[DataName.CALCULATED_LOAD_POWER] = float(
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Decimal(str(data.get(DataName.LOAD_VOLTAGE, 0)))
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* Decimal(str(data.get(DataName.LOAD_CURRENT, 0)))
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)
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return data
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@cached_property
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def model(self) -> str:
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data = readMemory(self._dev, address=0x000C, words=8)
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if data is None:
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raise TimeoutError("Timeout reading model")
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return data.decode().strip()
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@cached_property
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def version(self) -> str:
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data = readMemory(self._dev, address=0x0014, words=2)
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if data is None:
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raise TimeoutError("Timeout reading version")
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return "{}.{}.{}".format(*struct.unpack("!HBB", data))
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@cached_property
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def serial(self) -> str:
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data = readMemory(self._dev, address=0x0018, words=2)
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if data is None:
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raise TimeoutError("Timeout reading serial")
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return "{:02n}-{:02n}-{:04n}".format(*struct.unpack("!BBH", data))
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@property
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def load_enabled(self) -> bool:
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data = readMemory(self._dev, address=0x010A)
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if data is None:
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raise TimeoutError("Timeout reading serial")
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return bool(struct.unpack("!xB", data)[0])
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def enable_load(self, enable: bool) -> bool:
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data = writeMemory(self._dev, 0x010A, bytes((0, enable)))
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if data is None:
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raise TimeoutError("Timeout reading serial")
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print(data)
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return bool(struct.unpack("!xB", data)[0])
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@cached_property
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def name(self) -> str:
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data = readMemory(self._dev, address=0x0049, words=16)
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if data is None:
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raise TimeoutError("Timeout reading name")
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return data.decode("utf-16be").strip()
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