Add support for Tuya Sensors (esphome#1088)

* Add Tuya sensor

* Add tuya sensor to test4

* Forgot id

esphome/components/tuya/sensor/__init__.py

@@ -0,0 +1,28 @@
+from esphome.components import sensor
+import esphome.config_validation as cv
+import esphome.codegen as cg
+from esphome.const import CONF_ID
+from .. import tuya_ns, CONF_TUYA_ID, Tuya
+
+DEPENDENCIES = ['tuya']
+
+CONF_SENSOR_DATAPOINT = "sensor_datapoint"
+
+TuyaSensor = tuya_ns.class_('TuyaSensor', sensor.Sensor, cg.Component)
+
+CONFIG_SCHEMA = sensor.SENSOR_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_id(TuyaSensor),
+    cv.GenerateID(CONF_TUYA_ID): cv.use_id(Tuya),
+    cv.Required(CONF_SENSOR_DATAPOINT): cv.uint8_t,
+}).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield sensor.register_sensor(var, config)
+
+    paren = yield cg.get_variable(config[CONF_TUYA_ID])
+    cg.add(var.set_tuya_parent(paren))
+
+    cg.add(var.set_sensor_id(config[CONF_SENSOR_DATAPOINT]))

esphome/components/tuya/sensor/tuya_sensor.cpp

@@ -0,0 +1,44 @@
+#include "esphome/core/log.h"
+#include "tuya_sensor.h"
+
+namespace esphome {
+namespace tuya {
+
+static const char *TAG = "tuya.sensor";
+
+void TuyaSensor::setup() {
+  this->parent_->register_listener(this->sensor_id_, [this](TuyaDatapoint datapoint) {
+    if (datapoint.type == TuyaDatapointType::BOOLEAN) {
+      this->publish_state(datapoint.value_bool);
+      ESP_LOGD(TAG, "MCU reported sensor is: %s", ONOFF(datapoint.value_bool));
+    } else if (datapoint.type == TuyaDatapointType::INTEGER) {
+      this->publish_state(datapoint.value_int);
+      ESP_LOGD(TAG, "MCU reported sensor is: %d", datapoint.value_int);
+    } else if (datapoint.type == TuyaDatapointType::ENUM) {
+      this->publish_state(datapoint.value_enum);
+      ESP_LOGD(TAG, "MCU reported sensor is: %d", datapoint.value_enum);
+    } else if (datapoint.type == TuyaDatapointType::BITMASK) {
+      this->publish_state(datapoint.value_bitmask);
+      ESP_LOGD(TAG, "MCU reported sensor is: %x", datapoint.value_bitmask);
+    }
+  });
+}
+
+// void TuyaSensor::write_state(bool state) {
+//   TuyaDatapoint datapoint{};
+//   datapoint.id = this->sensor_id_;
+//   datapoint.type = TuyaDatapointType::BOOLEAN;
+//   datapoint.value_bool = state;
+//   this->parent_->set_datapoint_value(datapoint);
+//   ESP_LOGD(TAG, "Setting sensor: %s", ONOFF(state));
+
+//   this->publish_state(state);
+// }
+
+void TuyaSensor::dump_config() {
+  LOG_SENSOR("", "Tuya Sensor", this);
+  ESP_LOGCONFIG(TAG, "  Sensor has datapoint ID %u", this->sensor_id_);
+}
+
+}  // namespace tuya
+}  // namespace esphome

esphome/components/tuya/sensor/tuya_sensor.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/tuya/tuya.h"
+#include "esphome/components/sensor/sensor.h"
+
+namespace esphome {
+namespace tuya {
+
+class TuyaSensor : public sensor::Sensor, public Component {
+ public:
+  void setup() override;
+  void dump_config() override;
+  void set_sensor_id(uint8_t sensor_id) { this->sensor_id_ = sensor_id; }
+
+  void set_tuya_parent(Tuya *parent) { this->parent_ = parent; }
+
+ protected:
+  Tuya *parent_;
+  uint8_t sensor_id_{0};
+};
+
+}  // namespace tuya
+}  // namespace esphome

tests/test4.yaml

@@ -49,13 +49,15 @@ web_server:
     username: admin
     password: admin
 
-
 tuya:
 
 sensor:
   - platform: homeassistant
     entity_id: sensor.hello_world
     id: ha_hello_world
+  - platform: tuya
+    id: tuya_sensor
+    sensor_datapoint: 1
 #
 # platform sensor.apds9960 requires component apds9960
 #