mirror of https://github.com/esphome/esphome.git
123 lines
3.8 KiB
Python
123 lines
3.8 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 spi
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from esphome.const import (
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CONF_ID,
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CONF_SPI_ID,
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CONF_NUMBER,
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CONF_INVERTED,
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CONF_DATA_PIN,
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CONF_CLOCK_PIN,
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CONF_OUTPUT,
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)
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from esphome.core import EsphomeError
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MULTI_CONF = True
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sn74hc595_ns = cg.esphome_ns.namespace("sn74hc595")
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SN74HC595Component = sn74hc595_ns.class_("SN74HC595Component", cg.Component)
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SN74HC595GPIOComponent = sn74hc595_ns.class_(
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"SN74HC595GPIOComponent", SN74HC595Component
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)
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SN74HC595SPIComponent = sn74hc595_ns.class_(
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"SN74HC595SPIComponent", SN74HC595Component, spi.SPIDevice
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)
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SN74HC595GPIOPin = sn74hc595_ns.class_(
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"SN74HC595GPIOPin", cg.GPIOPin, cg.Parented.template(SN74HC595Component)
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)
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CONF_SN74HC595 = "sn74hc595"
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CONF_LATCH_PIN = "latch_pin"
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CONF_OE_PIN = "oe_pin"
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CONF_SR_COUNT = "sr_count"
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CONFIG_SCHEMA = cv.Any(
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cv.Schema(
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{
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cv.Required(CONF_ID): cv.declare_id(SN74HC595GPIOComponent),
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cv.Required(CONF_DATA_PIN): pins.gpio_output_pin_schema,
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cv.Required(CONF_CLOCK_PIN): pins.gpio_output_pin_schema,
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cv.Required(CONF_LATCH_PIN): pins.gpio_output_pin_schema,
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cv.Optional(CONF_OE_PIN): pins.gpio_output_pin_schema,
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cv.Optional(CONF_SR_COUNT, default=1): cv.int_range(min=1, max=256),
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}
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).extend(cv.COMPONENT_SCHEMA),
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cv.Schema(
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{
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cv.Required(CONF_ID): cv.declare_id(SN74HC595SPIComponent),
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cv.Required(CONF_LATCH_PIN): pins.gpio_output_pin_schema,
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cv.Optional(CONF_OE_PIN): pins.gpio_output_pin_schema,
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cv.Optional(CONF_SR_COUNT, default=1): cv.int_range(min=1, max=256),
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}
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)
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.extend(cv.COMPONENT_SCHEMA)
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.extend(spi.spi_device_schema(cs_pin_required=False))
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.extend(
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{
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cv.Required(CONF_SPI_ID): cv.use_id(spi.SPIComponent),
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}
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),
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msg='Either "data_pin" and "clock_pin" must be set or "spi_id" must be set.',
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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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if CONF_DATA_PIN in config:
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data_pin = await cg.gpio_pin_expression(config[CONF_DATA_PIN])
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cg.add(var.set_data_pin(data_pin))
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clock_pin = await cg.gpio_pin_expression(config[CONF_CLOCK_PIN])
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cg.add(var.set_clock_pin(clock_pin))
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elif CONF_SPI_ID in config:
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await spi.register_spi_device(var, config)
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else:
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raise EsphomeError("Not supported")
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latch_pin = await cg.gpio_pin_expression(config[CONF_LATCH_PIN])
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cg.add(var.set_latch_pin(latch_pin))
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if CONF_OE_PIN in config:
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oe_pin = await cg.gpio_pin_expression(config[CONF_OE_PIN])
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cg.add(var.set_oe_pin(oe_pin))
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cg.add(var.set_sr_count(config[CONF_SR_COUNT]))
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def _validate_output_mode(value):
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if value.get(CONF_OUTPUT) is not True:
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raise cv.Invalid("Only output mode is supported")
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return value
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SN74HC595_PIN_SCHEMA = pins.gpio_base_schema(
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SN74HC595GPIOPin,
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cv.int_range(min=0, max=2047),
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modes=[CONF_OUTPUT],
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mode_validator=_validate_output_mode,
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invertable=True,
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).extend(
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{
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cv.Required(CONF_SN74HC595): cv.use_id(SN74HC595Component),
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}
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)
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def sn74hc595_pin_final_validate(pin_config, parent_config):
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max_pins = parent_config[CONF_SR_COUNT] * 8
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if pin_config[CONF_NUMBER] >= max_pins:
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raise cv.Invalid(f"Pin number must be less than {max_pins}")
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@pins.PIN_SCHEMA_REGISTRY.register(
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CONF_SN74HC595, SN74HC595_PIN_SCHEMA, sn74hc595_pin_final_validate
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)
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async def sn74hc595_pin_to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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await cg.register_parented(var, config[CONF_SN74HC595])
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cg.add(var.set_pin(config[CONF_NUMBER]))
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cg.add(var.set_inverted(config[CONF_INVERTED]))
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return var
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