Add support for Xiaomi Mi Scale V1 and V2

esphome/components/ccs811/ccs811.cpp

@@ -19,6 +19,10 @@ static const char *TAG = "ccs811";
 #define CHECKED_IO(f) CHECK_TRUE(f, COMMUNICAITON_FAILED)
 
 void CCS811Component::setup() {
+  if (this->wakepin_) {
+    this->wakepin_->setup();
+  }
+  this->NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTEDwakeup(true);
   // page 9 programming guide - hwid is always 0x81
   uint8_t hw_id;
   CHECKED_IO(this->read_byte(0x20, &hw_id))
@@ -51,8 +55,11 @@ void CCS811Component::setup() {
     // baseline available, write to sensor
     this->write_bytes(0x11, decode_uint16(*this->baseline_));
   }
+  this->NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTEDwakeup(false);
 }
 void CCS811Component::update() {
+  // enable ccs8811
+  this->NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTEDwakeup(true);
   if (!this->status_has_data_())
     this->status_set_warning();
 
@@ -84,6 +91,8 @@ void CCS811Component::update() {
   this->status_clear_warning();
 
   this->send_env_data_();
+  // disable ccs8811
+  this->NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTEDwakeup(false);
 }
 void CCS811Component::send_env_data_() {
   if (this->humidity_ == nullptr && this->temperature_ == nullptr)
@@ -111,6 +120,11 @@ void CCS811Component::dump_config() {
   ESP_LOGCONFIG(TAG, "CCS811");
   LOG_I2C_DEVICE(this)
   LOG_UPDATE_INTERVAL(this)
+  if (this->wakepin_) {
+    ESP_LOGCONFIG(TAG, "  WAKEUP Pin: GPIO%u", this->wakepin_->get_pin());
+  } else {
+    ESP_LOGCONFIG(TAG, "  WAKEUP Pin: NOT SET");
+  }
   LOG_SENSOR("  ", "CO2 Sensor", this->co2_)
   LOG_SENSOR("  ", "TVOC Sensor", this->tvoc_)
   if (this->baseline_) {
@@ -142,6 +156,11 @@ void CCS811Component::dump_config() {
     }
   }
 }
+void CCS811Component::NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTEDwakeup(boolean set_on) {
+  if (this->wakepin_ != nullptr) {
+    this->wakepin_->digital_write(!set_on);
+  }
+}
 
 }  // namespace ccs811
 }  // namespace esphome

esphome/components/ccs811/ccs811.h

@@ -9,7 +9,11 @@ namespace esphome {
 namespace ccs811 {
 
 class CCS811Component : public PollingComponent, public i2c::I2CDevice {
+ private:
+  void NO_PRIVATE_METHODS_ALWAYS_USE_PROTECTEDwakeup(boolean set_on);
+
  public:
+  void set_wakepin(GPIOPin *wakepin) { wakepin_ = wakepin; }
   void set_co2(sensor::Sensor *co2) { co2_ = co2; }
   void set_tvoc(sensor::Sensor *tvoc) { tvoc_ = tvoc; }
   void set_baseline(uint16_t baseline) { baseline_ = baseline; }
@@ -48,6 +52,7 @@ class CCS811Component : public PollingComponent, public i2c::I2CDevice {
   sensor::Sensor *humidity_{nullptr};
   /// Input sensor for temperature reading.
   sensor::Sensor *temperature_{nullptr};
+  GPIOPin *wakepin_{nullptr};
 };
 
 }  // namespace ccs811

esphome/components/ccs811/sensor.py

@@ -1,8 +1,11 @@
 import esphome.codegen as cg
+from esphome import pins
+# from esphome.components import output
 import esphome.config_validation as cv
 from esphome.components import i2c, sensor
 from esphome.const import CONF_ID, ICON_RADIATOR, UNIT_PARTS_PER_MILLION, \
-    UNIT_PARTS_PER_BILLION, CONF_TEMPERATURE, CONF_HUMIDITY, ICON_PERIODIC_TABLE_CO2
+    UNIT_PARTS_PER_BILLION, CONF_TEMPERATURE, CONF_HUMIDITY, ICON_PERIODIC_TABLE_CO2, \
+    CONF_WAKEUP_PIN
 
 DEPENDENCIES = ['i2c']
 
@@ -22,6 +25,7 @@
     cv.Optional(CONF_BASELINE): cv.hex_uint16_t,
     cv.Optional(CONF_TEMPERATURE): cv.use_id(sensor.Sensor),
     cv.Optional(CONF_HUMIDITY): cv.use_id(sensor.Sensor),
+    cv.Optional(CONF_WAKEUP_PIN): pins.gpio_output_pin_schema,
 }).extend(cv.polling_component_schema('60s')).extend(i2c.i2c_device_schema(0x5A))
 
 
@@ -44,3 +48,7 @@ def to_code(config):
     if CONF_HUMIDITY in config:
         sens = yield cg.get_variable(config[CONF_HUMIDITY])
         cg.add(var.set_humidity(sens))
+
+    if CONF_WAKEUP_PIN in config:
+        wakepin = yield cg.gpio_pin_expression(config[CONF_WAKEUP_PIN])
+        cg.add(var.set_wakepin(wakepin))