TTP229-LSF i2c device support (#489)

* setting up non i2c ttp229

* add component

* fixed const and multiconf

* fixed issues with i2c address (it is fixed for this device
renamed component and platform to ttp229_lsf => i2c device. There is
another ttp229_bsf device that uses a proprietary bus protocol

* max channels is 0 to 15

* folow up on code review

* fixed Component ttf229_lsf

esphome/components/binary_sensor/ttp229_lsf.py

@@ -0,0 +1,24 @@
+import voluptuous as vol
+
+from esphome.components import binary_sensor
+from esphome.components.ttp229_lsf import TTP229LSFComponent, CONF_TTP229_ID
+import esphome.config_validation as cv
+from esphome.const import CONF_CHANNEL, CONF_NAME
+from esphome.cpp_generator import get_variable
+
+DEPENDENCIES = ['ttp229_lsf']
+TTP229Channel = binary_sensor.binary_sensor_ns.class_(
+    'TTP229Channel', binary_sensor.BinarySensor)
+
+PLATFORM_SCHEMA = cv.nameable(binary_sensor.BINARY_SENSOR_PLATFORM_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_variable_id(TTP229Channel),
+    cv.GenerateID(CONF_TTP229_ID): cv.use_variable_id(TTP229LSFComponent),
+    vol.Required(CONF_CHANNEL): vol.All(vol.Coerce(int), vol.Range(min=0, max=15))
+}))
+
+
+def to_code(config):
+    for hub in get_variable(config[CONF_TTP229_ID]):
+        yield
+    rhs = TTP229Channel.new(config[CONF_NAME], config[CONF_CHANNEL])
+    binary_sensor.register_binary_sensor(hub.add_channel(rhs), config)