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https://github.com/Threnklyn/esphome-dev.git
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Attila Darazs
30a542e763
* Add backlight handling for lcd_pcf8574 Switch the backlight on or off by calling id(mydisplay).backlight() or id(mydisplay).no_backlight() in lamda functions (assuming mydisplay is the custom id for the LCD). * Use abstract method Co-authored-by: Attila Darazs <attila@darazs.com> Co-authored-by: Otto Winter <otto@otto-winter.com>
30 lines
963 B
Python
30 lines
963 B
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
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from esphome.core import coroutine
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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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LCD_SCHEMA = display.BASIC_DISPLAY_SCHEMA.extend({
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cv.Required(CONF_DIMENSIONS): validate_lcd_dimensions,
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}).extend(cv.polling_component_schema('1s'))
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@coroutine
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def setup_lcd_display(var, config):
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yield cg.register_component(var, config)
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yield 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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