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60 lines
2.0 KiB
Python
60 lines
2.0 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 display
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from esphome.const import CONF_DIMENSIONS, CONF_POSITION, CONF_DATA
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CONF_USER_CHARACTERS = "user_characters"
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lcd_base_ns = cg.esphome_ns.namespace("lcd_base")
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LCDDisplay = lcd_base_ns.class_("LCDDisplay", cg.PollingComponent)
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def validate_lcd_dimensions(value):
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value = cv.dimensions(value)
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if value[0] > 0x40:
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raise cv.Invalid("LCD displays can't have more than 64 columns")
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if value[1] > 4:
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raise cv.Invalid("LCD displays can't have more than 4 rows")
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return value
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def validate_user_characters(value):
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positions = set()
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for conf in value:
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if conf[CONF_POSITION] in positions:
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raise cv.Invalid(
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f"Duplicate user defined character at position {conf[CONF_POSITION]}"
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)
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positions.add(conf[CONF_POSITION])
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return value
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LCD_SCHEMA = display.BASIC_DISPLAY_SCHEMA.extend(
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{
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cv.Required(CONF_DIMENSIONS): validate_lcd_dimensions,
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cv.Optional(CONF_USER_CHARACTERS): cv.All(
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cv.ensure_list(
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cv.Schema(
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{
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cv.Required(CONF_POSITION): cv.int_range(min=0, max=7),
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cv.Required(CONF_DATA): cv.All(
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cv.ensure_list(cv.int_range(min=0, max=31)),
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cv.Length(min=8, max=8),
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),
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}
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),
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),
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cv.Length(max=8),
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validate_user_characters,
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),
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}
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).extend(cv.polling_component_schema("1s"))
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async def setup_lcd_display(var, config):
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await display.register_display(var, config)
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cg.add(var.set_dimensions(config[CONF_DIMENSIONS][0], config[CONF_DIMENSIONS][1]))
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if CONF_USER_CHARACTERS in config:
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for usr in config[CONF_USER_CHARACTERS]:
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cg.add(var.set_user_defined_char(usr[CONF_POSITION], usr[CONF_DATA]))
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