73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
import re
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import esphome.codegen as cg
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from esphome.components import uart
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import esphome.config_validation as cv
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from esphome.const import CONF_ID, CONF_RECEIVE_TIMEOUT, PLATFORM_ESP32, PLATFORM_ESP8266
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CODEOWNERS = ["@Tomer27cz"]
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DEPENDENCIES = ["uart"]
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CONF_DLMS_METER_ID = "dlms_meter_id"
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CONF_OBIS_CODE = "obis_code"
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CONF_DECRYPTION_KEY = "decryption_key"
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CONF_CUSTOM_PATTERN = "custom_pattern"
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dlms_meter_component_ns = cg.esphome_ns.namespace("dlms_meter_lib")
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DlmsMeterLibComponent = dlms_meter_component_ns.class_(
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"DlmsMeterLibComponent", cg.Component, uart.UARTDevice
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)
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def validate_key(value):
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value = cv.string_strict(value)
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if len(value) != 32:
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raise cv.Invalid("Decryption key must be 32 hex characters (16 bytes)")
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try:
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bytes.fromhex(value)
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except ValueError as exc:
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raise cv.Invalid("Decryption key must be hex values from 00 to FF") from exc
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return value
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def obis_code(value):
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value = cv.string(value)
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# Validate standard OBIS format: A.B.C.D.E.F (e.g., 1.0.1.8.0.255)
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match = re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", value)
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if match is None:
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raise cv.Invalid(
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f"{value} is not a valid OBIS code (expected format: A.B.C.D.E.F)"
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)
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return value
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CONFIG_SCHEMA = cv.All(
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cv.Schema(
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{
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cv.GenerateID(): cv.declare_id(DlmsMeterLibComponent),
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cv.Optional(CONF_RECEIVE_TIMEOUT, default="50ms"): cv.positive_time_period_milliseconds,
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cv.Optional(CONF_DECRYPTION_KEY): validate_key,
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cv.Optional(CONF_CUSTOM_PATTERN, default=""): cv.string,
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}
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)
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.extend(uart.UART_DEVICE_SCHEMA)
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.extend(cv.COMPONENT_SCHEMA),
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cv.only_on([PLATFORM_ESP8266, PLATFORM_ESP32]),
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)
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FINAL_VALIDATE_SCHEMA = uart.final_validate_device_schema(
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"dlms_meter_lib", require_rx=True
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)
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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await cg.register_component(var, config)
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await uart.register_uart_device(var, config)
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if CONF_DECRYPTION_KEY in config:
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cg.add(var.set_decryption_key(config[CONF_DECRYPTION_KEY]))
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cg.add(var.set_receive_timeout(config[CONF_RECEIVE_TIMEOUT]))
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cg.add(var.set_custom_pattern(config[CONF_CUSTOM_PATTERN]))
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cg.add_library("dlms_parser", None, "https://github.com/esphome-libs/dlms_parser") |