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88 lines
3 KiB
Python
88 lines
3 KiB
Python
import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome import pins
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from esphome.components import uart
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from esphome.const import (
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CONF_ID,
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CONF_UART_ID,
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CONF_RECEIVE_TIMEOUT,
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)
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CODEOWNERS = ["@glmnet", "@zuidwijk"]
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DEPENDENCIES = ["uart"]
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AUTO_LOAD = ["sensor", "text_sensor"]
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CONF_CRC_CHECK = "crc_check"
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CONF_DECRYPTION_KEY = "decryption_key"
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CONF_DSMR_ID = "dsmr_id"
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CONF_GAS_MBUS_ID = "gas_mbus_id"
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CONF_MAX_TELEGRAM_LENGTH = "max_telegram_length"
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CONF_REQUEST_INTERVAL = "request_interval"
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CONF_REQUEST_PIN = "request_pin"
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# Hack to prevent compile error due to ambiguity with lib namespace
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dsmr_ns = cg.esphome_ns.namespace("esphome::dsmr")
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Dsmr = dsmr_ns.class_("Dsmr", cg.Component, uart.UARTDevice)
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def _validate_key(value):
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value = cv.string_strict(value)
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parts = [value[i : i + 2] for i in range(0, len(value), 2)]
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if len(parts) != 16:
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raise cv.Invalid("Decryption key must consist of 16 hexadecimal numbers")
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parts_int = []
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if any(len(part) != 2 for part in parts):
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raise cv.Invalid("Decryption key must be format XX")
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for part in parts:
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try:
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parts_int.append(int(part, 16))
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except ValueError:
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# pylint: disable=raise-missing-from
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raise cv.Invalid("Decryption key must be hex values from 00 to FF")
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return "".join(f"{part:02X}" for part in parts_int)
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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(Dsmr),
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cv.Optional(CONF_DECRYPTION_KEY): _validate_key,
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cv.Optional(CONF_CRC_CHECK, default=True): cv.boolean,
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cv.Optional(CONF_GAS_MBUS_ID, default=1): cv.int_,
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cv.Optional(CONF_MAX_TELEGRAM_LENGTH, default=1500): cv.int_,
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cv.Optional(CONF_REQUEST_PIN): pins.gpio_output_pin_schema,
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cv.Optional(
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CONF_REQUEST_INTERVAL, default="0ms"
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): cv.positive_time_period_milliseconds,
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cv.Optional(
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CONF_RECEIVE_TIMEOUT, default="200ms"
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): cv.positive_time_period_milliseconds,
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}
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).extend(uart.UART_DEVICE_SCHEMA),
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cv.only_with_arduino,
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)
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async def to_code(config):
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uart_component = await cg.get_variable(config[CONF_UART_ID])
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var = cg.new_Pvariable(config[CONF_ID], uart_component, config[CONF_CRC_CHECK])
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cg.add(var.set_max_telegram_length(config[CONF_MAX_TELEGRAM_LENGTH]))
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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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await cg.register_component(var, config)
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if CONF_REQUEST_PIN in config:
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request_pin = await cg.gpio_pin_expression(config[CONF_REQUEST_PIN])
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cg.add(var.set_request_pin(request_pin))
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cg.add(var.set_request_interval(config[CONF_REQUEST_INTERVAL].total_milliseconds))
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cg.add(var.set_receive_timeout(config[CONF_RECEIVE_TIMEOUT].total_milliseconds))
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cg.add_define("DSMR_GAS_MBUS_ID", config[CONF_GAS_MBUS_ID])
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# DSMR Parser
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cg.add_library("glmnet/Dsmr", "0.5")
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# Crypto
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cg.add_library("rweather/Crypto", "0.2.0")
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