mirror of https://github.com/esphome/esphome.git
86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome.components import sensor, voltage_sampler
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from esphome.components.esp32 import get_esp32_variant
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from esphome.const import (
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CONF_ATTENUATION,
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CONF_ID,
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CONF_NUMBER,
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CONF_PIN,
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CONF_RAW,
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DEVICE_CLASS_VOLTAGE,
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STATE_CLASS_MEASUREMENT,
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UNIT_VOLT,
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)
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from esphome.core import CORE
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from . import (
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ATTENUATION_MODES,
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ESP32_VARIANT_ADC1_PIN_TO_CHANNEL,
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validate_adc_pin,
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)
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AUTO_LOAD = ["voltage_sampler"]
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def validate_config(config):
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if config[CONF_RAW] and config.get(CONF_ATTENUATION, None) == "auto":
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raise cv.Invalid("Automatic attenuation cannot be used when raw output is set.")
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return config
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adc_ns = cg.esphome_ns.namespace("adc")
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ADCSensor = adc_ns.class_(
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"ADCSensor", sensor.Sensor, cg.PollingComponent, voltage_sampler.VoltageSampler
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)
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CONFIG_SCHEMA = cv.All(
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sensor.sensor_schema(
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ADCSensor,
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unit_of_measurement=UNIT_VOLT,
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accuracy_decimals=2,
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device_class=DEVICE_CLASS_VOLTAGE,
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state_class=STATE_CLASS_MEASUREMENT,
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)
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.extend(
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{
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cv.Required(CONF_PIN): validate_adc_pin,
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cv.Optional(CONF_RAW, default=False): cv.boolean,
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cv.SplitDefault(CONF_ATTENUATION, esp32="0db"): cv.All(
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cv.only_on_esp32, cv.enum(ATTENUATION_MODES, lower=True)
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),
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}
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)
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.extend(cv.polling_component_schema("60s")),
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validate_config,
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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 sensor.register_sensor(var, config)
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if config[CONF_PIN] == "VCC":
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cg.add_define("USE_ADC_SENSOR_VCC")
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elif config[CONF_PIN] == "TEMPERATURE":
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cg.add(var.set_is_temperature())
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else:
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pin = await cg.gpio_pin_expression(config[CONF_PIN])
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cg.add(var.set_pin(pin))
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if CONF_RAW in config:
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cg.add(var.set_output_raw(config[CONF_RAW]))
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if CONF_ATTENUATION in config:
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if config[CONF_ATTENUATION] == "auto":
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cg.add(var.set_autorange(cg.global_ns.true))
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else:
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cg.add(var.set_attenuation(config[CONF_ATTENUATION]))
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if CORE.is_esp32:
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variant = get_esp32_variant()
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pin_num = config[CONF_PIN][CONF_NUMBER]
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chan = ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant][pin_num]
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cg.add(var.set_channel(chan))
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