esphome/esphomeyaml/components/display/nextion.py

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from esphomeyaml.components import display, uart
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from esphomeyaml.components.uart import UARTComponent
import esphomeyaml.config_validation as cv
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from esphomeyaml.const import CONF_ID, CONF_LAMBDA, CONF_UART_ID
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from esphomeyaml.cpp_generator import Pvariable, add, get_variable, process_lambda
from esphomeyaml.cpp_helpers import setup_component
from esphomeyaml.cpp_types import App, PollingComponent, void
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DEPENDENCIES = ['uart']
Nextion = display.display_ns.class_('Nextion', PollingComponent, uart.UARTDevice)
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NextionRef = Nextion.operator('ref')
PLATFORM_SCHEMA = display.BASIC_DISPLAY_PLATFORM_SCHEMA.extend({
cv.GenerateID(): cv.declare_variable_id(Nextion),
cv.GenerateID(CONF_UART_ID): cv.use_variable_id(UARTComponent),
}).extend(cv.COMPONENT_SCHEMA.schema)
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def to_code(config):
for uart_ in get_variable(config[CONF_UART_ID]):
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yield
rhs = App.make_nextion(uart_)
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nextion = Pvariable(config[CONF_ID], rhs)
if CONF_LAMBDA in config:
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for lambda_ in process_lambda(config[CONF_LAMBDA], [(NextionRef, 'it')],
return_type=void):
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yield
add(nextion.set_writer(lambda_))
display.setup_display(nextion, config)
setup_component(nextion, config)
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BUILD_FLAGS = '-DUSE_NEXTION'