Smallish Update

esphomeyaml/components/sensor/hx711.py

@@ -0,0 +1,47 @@
+import voluptuous as vol
+
+import esphomeyaml.config_validation as cv
+from esphomeyaml import pins
+from esphomeyaml.components import sensor
+from esphomeyaml.const import CONF_GAIN, CONF_MAKE_ID, CONF_NAME, CONF_UPDATE_INTERVAL
+from esphomeyaml.helpers import App, Application, add, gpio_input_pin_expression, variable
+
+MakeHX711Sensor = Application.MakeHX711Sensor
+
+CONF_DOUT_PIN = 'dout_pin'
+CONF_SCK_PIN = 'sck_pin'
+
+GAINS = {
+    128: sensor.sensor_ns.HX711_GAIN_128,
+    32: sensor.sensor_ns.HX711_GAIN_32,
+    64: sensor.sensor_ns.HX711_GAIN_64,
+}
+
+PLATFORM_SCHEMA = cv.nameable(sensor.SENSOR_PLATFORM_SCHEMA.extend({
+    cv.GenerateID(CONF_MAKE_ID): cv.declare_variable_id(MakeHX711Sensor),
+    vol.Required(CONF_DOUT_PIN): pins.gpio_input_pin_schema,
+    vol.Required(CONF_SCK_PIN): pins.gpio_output_pin_schema,
+    vol.Optional(CONF_GAIN): vol.All(cv.int_, cv.one_of(*GAINS)),
+    vol.Optional(CONF_UPDATE_INTERVAL): cv.positive_time_period_milliseconds,
+}))
+
+
+def to_code(config):
+    dout_pin = None
+    for dout_pin in gpio_input_pin_expression(config[CONF_DOUT_PIN]):
+        yield
+    sck_pin = None
+    for sck_pin in gpio_input_pin_expression(config[CONF_SCK_PIN]):
+        yield
+
+    rhs = App.make_hx711_sensor(config[CONF_NAME], dout_pin, sck_pin,
+                                config.get(CONF_UPDATE_INTERVAL))
+    make = variable(config[CONF_MAKE_ID], rhs)
+
+    if CONF_GAIN in config:
+        add(make.Phx711.set_gain(GAINS[CONF_GAIN]))
+
+    sensor.setup_sensor(make.Phx711, make.Pmqtt, config)
+
+
+BUILD_FLAGS = '-DUSE_HX711'