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65 lines
1.9 KiB
Python
65 lines
1.9 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 lcd_base
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from esphome.const import (
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CONF_DATA_PINS,
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CONF_ENABLE_PIN,
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CONF_RS_PIN,
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CONF_RW_PIN,
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CONF_ID,
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CONF_LAMBDA,
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)
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AUTO_LOAD = ["lcd_base"]
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lcd_gpio_ns = cg.esphome_ns.namespace("lcd_gpio")
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GPIOLCDDisplay = lcd_gpio_ns.class_("GPIOLCDDisplay", lcd_base.LCDDisplay)
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def validate_pin_length(value):
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if len(value) != 4 and len(value) != 8:
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raise cv.Invalid(
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"LCD Displays can either operate in 4-pin or 8-pin mode,"
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"not {}-pin mode".format(len(value))
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)
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return value
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CONFIG_SCHEMA = lcd_base.LCD_SCHEMA.extend(
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{
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cv.GenerateID(): cv.declare_id(GPIOLCDDisplay),
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cv.Required(CONF_DATA_PINS): cv.All(
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[pins.gpio_output_pin_schema], validate_pin_length
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),
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cv.Required(CONF_ENABLE_PIN): pins.gpio_output_pin_schema,
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cv.Required(CONF_RS_PIN): pins.gpio_output_pin_schema,
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cv.Optional(CONF_RW_PIN): pins.gpio_output_pin_schema,
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}
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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 lcd_base.setup_lcd_display(var, config)
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pins_ = []
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for conf in config[CONF_DATA_PINS]:
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pins_.append((await cg.gpio_pin_expression(conf)))
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cg.add(var.set_data_pins(*pins_))
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enable = await cg.gpio_pin_expression(config[CONF_ENABLE_PIN])
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cg.add(var.set_enable_pin(enable))
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rs = await cg.gpio_pin_expression(config[CONF_RS_PIN])
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cg.add(var.set_rs_pin(rs))
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if CONF_RW_PIN in config:
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rw = await cg.gpio_pin_expression(config[CONF_RW_PIN])
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cg.add(var.set_rw_pin(rw))
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if CONF_LAMBDA in config:
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lambda_ = await cg.process_lambda(
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config[CONF_LAMBDA],
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[(GPIOLCDDisplay.operator("ref"), "it")],
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return_type=cg.void,
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)
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cg.add(var.set_writer(lambda_))
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