mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 19:54:14 +01:00
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>
26 lines
953 B
Python
26 lines
953 B
Python
import esphome.codegen as cg
|
|
import esphome.config_validation as cv
|
|
from esphome.components import lcd_base, i2c
|
|
from esphome.const import CONF_ID, CONF_LAMBDA
|
|
|
|
DEPENDENCIES = ['i2c']
|
|
AUTO_LOAD = ['lcd_base']
|
|
|
|
lcd_pcf8574_ns = cg.esphome_ns.namespace('lcd_pcf8574')
|
|
PCF8574LCDDisplay = lcd_pcf8574_ns.class_('PCF8574LCDDisplay', lcd_base.LCDDisplay, i2c.I2CDevice)
|
|
|
|
CONFIG_SCHEMA = lcd_base.LCD_SCHEMA.extend({
|
|
cv.GenerateID(): cv.declare_id(PCF8574LCDDisplay),
|
|
}).extend(i2c.i2c_device_schema(0x3F))
|
|
|
|
|
|
def to_code(config):
|
|
var = cg.new_Pvariable(config[CONF_ID])
|
|
yield lcd_base.setup_lcd_display(var, config)
|
|
yield i2c.register_i2c_device(var, config)
|
|
|
|
if CONF_LAMBDA in config:
|
|
lambda_ = yield cg.process_lambda(config[CONF_LAMBDA],
|
|
[(PCF8574LCDDisplay.operator('ref'), 'it')],
|
|
return_type=cg.void)
|
|
cg.add(var.set_writer(lambda_))
|