Update for 1.4.0

esphomeyaml/components/pcf8574.py

@@ -0,0 +1,24 @@
+import voluptuous as vol
+
+import esphomeyaml.config_validation as cv
+from esphomeyaml.const import CONF_ADDRESS, CONF_ID, CONF_PCF8575
+from esphomeyaml.helpers import App, Pvariable
+
+DEPENDENCIES = ['i2c']
+
+PCF8574_SCHEMA = vol.Schema({
+    vol.Required(CONF_ID): cv.register_variable_id,
+    vol.Optional(CONF_ADDRESS, default=0x21): cv.i2c_address,
+    vol.Optional(CONF_PCF8575, default=False): cv.boolean,
+})
+
+CONFIG_SCHEMA = vol.All(cv.ensure_list, [PCF8574_SCHEMA])
+
+
+def to_code(config):
+    for conf in config:
+        rhs = App.make_pcf8574_component(conf[CONF_ADDRESS], conf[CONF_PCF8575])
+        Pvariable('io::PCF8574Component', conf[CONF_ID], rhs)
+
+
+BUILD_FLAGS = '-DUSE_PCF8574'