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129 lines
4.3 KiB
Python
129 lines
4.3 KiB
Python
from esphome import pins
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import esphome.codegen as cg
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from esphome.components import i2c
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import esphome.config_validation as cv
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from esphome.const import (
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CONF_BINARY_SENSOR,
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CONF_CHANNEL,
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CONF_ID,
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CONF_INPUT,
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CONF_INVERTED,
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CONF_MODE,
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CONF_NUMBER,
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CONF_OUTPUT,
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)
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import esphome.final_validate as fv
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CONF_TOUCH_THRESHOLD = "touch_threshold"
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CONF_RELEASE_THRESHOLD = "release_threshold"
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CONF_TOUCH_DEBOUNCE = "touch_debounce"
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CONF_RELEASE_DEBOUNCE = "release_debounce"
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CONF_MAX_TOUCH_CHANNEL = "max_touch_channel"
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CONF_MPR121 = "mpr121"
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CONF_MPR121_ID = "mpr121_id"
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DEPENDENCIES = ["i2c"]
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mpr121_ns = cg.esphome_ns.namespace("mpr121")
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MPR121Component = mpr121_ns.class_("MPR121Component", cg.Component, i2c.I2CDevice)
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MPR121GPIOPin = mpr121_ns.class_("MPR121GPIOPin", cg.GPIOPin)
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MULTI_CONF = True
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CONFIG_SCHEMA = (
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cv.Schema(
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{
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cv.GenerateID(): cv.declare_id(MPR121Component),
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cv.Optional(CONF_RELEASE_DEBOUNCE, default=0): cv.int_range(min=0, max=7),
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cv.Optional(CONF_TOUCH_DEBOUNCE, default=0): cv.int_range(min=0, max=7),
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cv.Optional(CONF_TOUCH_THRESHOLD, default=0x0B): cv.int_range(
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min=0x05, max=0x30
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),
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cv.Optional(CONF_RELEASE_THRESHOLD, default=0x06): cv.int_range(
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min=0x05, max=0x30
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),
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cv.Optional(CONF_MAX_TOUCH_CHANNEL): cv.int_range(min=3, max=11),
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}
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)
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.extend(cv.COMPONENT_SCHEMA)
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.extend(i2c.i2c_device_schema(0x5A))
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)
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def _final_validate(config):
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fconf = fv.full_config.get()
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max_touch_channel = 3
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if (binary_sensors := fconf.get(CONF_BINARY_SENSOR)) is not None:
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for binary_sensor in binary_sensors:
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if binary_sensor.get(CONF_MPR121_ID) == config[CONF_ID]:
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max_touch_channel = max(max_touch_channel, binary_sensor[CONF_CHANNEL])
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if (
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max_touch_channel_in_config := config.get(CONF_MAX_TOUCH_CHANNEL)
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) and max_touch_channel != max_touch_channel_in_config:
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raise cv.Invalid(
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"Max touch channel must equal the highest binary sensor channel or be removed for auto calculation",
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path=[CONF_MAX_TOUCH_CHANNEL],
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)
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path = fconf.get_path_for_id(config[CONF_ID])[:-1]
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this_config = fconf.get_config_for_path(path)
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this_config[CONF_MAX_TOUCH_CHANNEL] = max_touch_channel
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FINAL_VALIDATE_SCHEMA = _final_validate
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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cg.add(var.set_touch_debounce(config[CONF_TOUCH_DEBOUNCE]))
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cg.add(var.set_release_debounce(config[CONF_RELEASE_DEBOUNCE]))
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cg.add(var.set_touch_threshold(config[CONF_TOUCH_THRESHOLD]))
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cg.add(var.set_release_threshold(config[CONF_RELEASE_THRESHOLD]))
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cg.add(var.set_max_touch_channel(config[CONF_MAX_TOUCH_CHANNEL]))
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await cg.register_component(var, config)
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await i2c.register_i2c_device(var, config)
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def validate_mode(value):
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if bool(value[CONF_INPUT]) == bool(value[CONF_OUTPUT]):
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raise cv.Invalid("Mode must be either input or output")
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return value
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# https://www.nxp.com/docs/en/data-sheet/MPR121.pdf, page 4
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#
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# Among the 12 electrode inputs, 8 inputs are designed as multifunctional pins. When these pins are
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# not configured as electrodes, they may be used to drive LEDs or used for general purpose input or
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# output.
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MPR121_GPIO_PIN_SCHEMA = pins.gpio_base_schema(
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MPR121GPIOPin,
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cv.int_range(min=4, max=11),
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modes=[CONF_INPUT, CONF_OUTPUT],
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mode_validator=validate_mode,
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).extend(
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{
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cv.Required(CONF_MPR121): cv.use_id(MPR121Component),
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}
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)
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def mpr121_pin_final_validate(pin_config, parent_config):
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if pin_config[CONF_NUMBER] <= parent_config[CONF_MAX_TOUCH_CHANNEL]:
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raise cv.Invalid(
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"Pin number must be higher than the max touch channel of the MPR121 component",
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)
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@pins.PIN_SCHEMA_REGISTRY.register(
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CONF_MPR121, MPR121_GPIO_PIN_SCHEMA, mpr121_pin_final_validate
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)
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async def mpr121_gpio_pin_to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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parent = await cg.get_variable(config[CONF_MPR121])
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cg.add(var.set_parent(parent))
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num = config[CONF_NUMBER]
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cg.add(var.set_pin(num))
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cg.add(var.set_inverted(config[CONF_INVERTED]))
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cg.add(var.set_flags(pins.gpio_flags_expr(config[CONF_MODE])))
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return var
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