esphome/esphomeyaml/components/display/lcd_pcf8574.py
Otto Winter 15331edb78
Let esphomeyaml know about class inheritance (#229)
* Allow overriding setup priority

* Add inheritance tree

* Global variables

* Tests and better validation

* Fix

* Lint
2018-11-12 23:30:31 +01:00

38 lines
1.3 KiB
Python

import voluptuous as vol
import esphomeyaml.config_validation as cv
from esphomeyaml.components import display, i2c
from esphomeyaml.components.display.lcd_gpio import LCDDisplayRef, validate_lcd_dimensions, \
LCDDisplay
from esphomeyaml.const import CONF_ADDRESS, CONF_DIMENSIONS, CONF_ID, CONF_LAMBDA
from esphomeyaml.helpers import App, Pvariable, add, process_lambda, setup_component
DEPENDENCIES = ['i2c']
PCF8574LCDDisplay = display.display_ns.class_('PCF8574LCDDisplay', LCDDisplay, i2c.I2CDevice)
PLATFORM_SCHEMA = display.BASIC_DISPLAY_PLATFORM_SCHEMA.extend({
cv.GenerateID(): cv.declare_variable_id(PCF8574LCDDisplay),
vol.Required(CONF_DIMENSIONS): validate_lcd_dimensions,
vol.Optional(CONF_ADDRESS): cv.i2c_address,
}).extend(cv.COMPONENT_SCHEMA.schema)
def to_code(config):
rhs = App.make_pcf8574_lcd_display(config[CONF_DIMENSIONS][0], config[CONF_DIMENSIONS][1])
lcd = Pvariable(config[CONF_ID], rhs)
if CONF_ADDRESS in config:
add(lcd.set_address(config[CONF_ADDRESS]))
if CONF_LAMBDA in config:
for lambda_ in process_lambda(config[CONF_LAMBDA], [(LCDDisplayRef, 'it')]):
yield
add(lcd.set_writer(lambda_))
display.setup_display(lcd, config)
setup_component(lcd, config)
BUILD_FLAGS = ['-DUSE_LCD_DISPLAY', '-DUSE_LCD_DISPLAY_PCF8574']