Further changes

esphomeyaml/components/display/nextion.py

@@ -0,0 +1,32 @@
+import esphomeyaml.config_validation as cv
+from esphomeyaml.components import display
+from esphomeyaml.components.uart import UARTComponent
+from esphomeyaml.const import CONF_ID, CONF_LAMBDA, CONF_UART_ID
+from esphomeyaml.helpers import App, Pvariable, add, get_variable, process_lambda
+
+DEPENDENCIES = ['uart']
+
+Nextion = display.display_ns.Nextion
+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),
+})
+
+
+def to_code(config):
+    for uart in get_variable(config[CONF_UART_ID]):
+        yield
+    rhs = App.make_nextion(uart)
+    nextion = Pvariable(config[CONF_ID], rhs)
+
+    if CONF_LAMBDA in config:
+        for lambda_ in process_lambda(config[CONF_LAMBDA], [(NextionRef, 'it')]):
+            yield
+        add(nextion.set_writer(lambda_))
+
+    display.setup_display(nextion, config)
+
+
+BUILD_FLAGS = '-DUSE_NEXTION'