86 lines
2.4 KiB
Python
86 lines
2.4 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_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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CODEOWNERS = ["@hwstar", "@clydebarrow"]
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DEPENDENCIES = ["i2c"]
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MULTI_CONF = True
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CONF_PIN_COUNT = "pin_count"
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pca9554_ns = cg.esphome_ns.namespace("pca9554")
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PCA9554Component = pca9554_ns.class_("PCA9554Component", cg.Component, i2c.I2CDevice)
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PCA9554GPIOPin = pca9554_ns.class_(
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"PCA9554GPIOPin", cg.GPIOPin, cg.Parented.template(PCA9554Component)
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)
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CONF_PCA9554 = "pca9554"
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CONFIG_SCHEMA = (
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cv.Schema(
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{
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cv.Required(CONF_ID): cv.declare_id(PCA9554Component),
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cv.Optional(CONF_PIN_COUNT, default=8): cv.one_of(4, 8, 16),
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}
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)
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.extend(cv.COMPONENT_SCHEMA)
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.extend(
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i2c.i2c_device_schema(0x20)
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) # Note: 0x20 for the non-A part. The PCA9554A parts start at addess 0x38
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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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cg.add(var.set_pin_count(config[CONF_PIN_COUNT]))
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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 not (value[CONF_INPUT] or value[CONF_OUTPUT]):
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raise cv.Invalid("Mode must be either input or output")
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if value[CONF_INPUT] and 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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PCA9554_PIN_SCHEMA = pins.gpio_base_schema(
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PCA9554GPIOPin,
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cv.int_range(min=0, max=15),
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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_PCA9554): cv.use_id(PCA9554Component),
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}
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)
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def pca9554_pin_final_validate(pin_config, parent_config):
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count = parent_config[CONF_PIN_COUNT]
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if pin_config[CONF_NUMBER] >= count:
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raise cv.Invalid(f"Pin number must be in range 0-{count - 1}")
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@pins.PIN_SCHEMA_REGISTRY.register(
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CONF_PCA9554, PCA9554_PIN_SCHEMA, pca9554_pin_final_validate
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)
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async def pca9554_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_PCA9554])
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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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