Binary sensor map implementation (#551)

* add binary_sensor_map c code

* add python file

* fixed python and C++ code for new framework

* renamed add_sensor to add_channel

* travis

* Updates

- Use struct for channels_ array - heap allocation is not really necessary here.
- any_active can also be written as mask != 0
- Update setup priority to DATA
- Use shorter TAG (name is already long; not important)
- Quotes around name
- Add icon to sensor
- Use new cv.typed_schema
- Change CONF_CHANNEL to CONF_BINARY_SENSOR - makes it clearer that this option accepts a binary sensor (and not for example an int)
- Add test


Co-authored-by: Otto Winter <otto@otto-winter.com>

esphome/components/binary_sensor_map/sensor.py

@@ -0,0 +1,42 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+
+from esphome.components import sensor, binary_sensor
+from esphome.const import CONF_ID, CONF_CHANNELS, CONF_VALUE, CONF_TYPE, UNIT_EMPTY, \
+    ICON_CHECK_CIRCLE_OUTLINE, CONF_BINARY_SENSOR
+
+DEPENDENCIES = ['binary_sensor']
+
+binary_sensor_map_ns = cg.esphome_ns.namespace('binary_sensor_map')
+BinarySensorMap = binary_sensor_map_ns.class_('BinarySensorMap', cg.Component, sensor.Sensor)
+SensorMapType = binary_sensor_map_ns.enum('SensorMapType')
+
+CONF_GROUP = 'group'
+SENSOR_MAP_TYPES = {
+    CONF_GROUP: SensorMapType.BINARY_SENSOR_MAP_TYPE_GROUP,
+}
+
+entry = {
+    cv.Required(CONF_BINARY_SENSOR): cv.use_id(binary_sensor.BinarySensor),
+    cv.Required(CONF_VALUE): cv.float_,
+}
+
+CONFIG_SCHEMA = cv.typed_schema({
+    CONF_GROUP: sensor.sensor_schema(UNIT_EMPTY, ICON_CHECK_CIRCLE_OUTLINE, 0).extend({
+        cv.GenerateID(): cv.declare_id(BinarySensorMap),
+        cv.Required(CONF_CHANNELS): cv.All(cv.ensure_list(entry), cv.Length(min=1)),
+    }),
+}, lower=True)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield sensor.register_sensor(var, config)
+
+    constant = SENSOR_MAP_TYPES[config[CONF_TYPE]]
+    cg.add(var.set_sensor_type(constant))
+
+    for ch in config[CONF_CHANNELS]:
+        input_var = yield cg.get_variable(ch[CONF_BINARY_SENSOR])
+        cg.add(var.add_channel(input_var, ch[CONF_VALUE]))