Add BME680 via BSEC integration (#1313)

CODEOWNERS

@@ -20,6 +20,7 @@ esphome/components/async_tcp/* @OttoWinter
 esphome/components/atc_mithermometer/* @ahpohl
 esphome/components/bang_bang/* @OttoWinter
 esphome/components/binary_sensor/* @esphome/core
+esphome/components/bme680_bsec/* @trvrnrth
 esphome/components/canbus/* @danielschramm @mvturnho
 esphome/components/captive_portal/* @OttoWinter
 esphome/components/climate/* @esphome/core

esphome/components/bme680_bsec/__init__.py

@@ -0,0 +1,64 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c
+from esphome.const import CONF_ID
+
+CODEOWNERS = ["@trvrnrth"]
+DEPENDENCIES = ["i2c"]
+AUTO_LOAD = ["sensor", "text_sensor"]
+
+CONF_BME680_BSEC_ID = "bme680_bsec_id"
+CONF_TEMPERATURE_OFFSET = "temperature_offset"
+CONF_IAQ_MODE = "iaq_mode"
+CONF_SAMPLE_RATE = "sample_rate"
+CONF_STATE_SAVE_INTERVAL = "state_save_interval"
+
+bme680_bsec_ns = cg.esphome_ns.namespace("bme680_bsec")
+
+IAQMode = bme680_bsec_ns.enum("IAQMode")
+IAQ_MODE_OPTIONS = {
+    "STATIC": IAQMode.IAQ_MODE_STATIC,
+    "MOBILE": IAQMode.IAQ_MODE_MOBILE,
+}
+
+SampleRate = bme680_bsec_ns.enum("SampleRate")
+SAMPLE_RATE_OPTIONS = {
+    "LP": SampleRate.SAMPLE_RATE_LP,
+    "ULP": SampleRate.SAMPLE_RATE_ULP,
+}
+
+BME680BSECComponent = bme680_bsec_ns.class_(
+    "BME680BSECComponent", cg.Component, i2c.I2CDevice
+)
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(BME680BSECComponent),
+        cv.Optional(CONF_TEMPERATURE_OFFSET, default=0): cv.temperature,
+        cv.Optional(CONF_IAQ_MODE, default="STATIC"): cv.enum(
+            IAQ_MODE_OPTIONS, upper=True
+        ),
+        cv.Optional(CONF_SAMPLE_RATE, default="LP"): cv.enum(
+            SAMPLE_RATE_OPTIONS, upper=True
+        ),
+        cv.Optional(
+            CONF_STATE_SAVE_INTERVAL, default="6hours"
+        ): cv.positive_time_period_minutes,
+    }
+).extend(i2c.i2c_device_schema(0x76))
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield i2c.register_i2c_device(var, config)
+
+    cg.add(var.set_temperature_offset(config[CONF_TEMPERATURE_OFFSET]))
+    cg.add(var.set_iaq_mode(config[CONF_IAQ_MODE]))
+    cg.add(var.set_sample_rate(config[CONF_SAMPLE_RATE]))
+    cg.add(
+        var.set_state_save_interval(config[CONF_STATE_SAVE_INTERVAL].total_milliseconds)
+    )
+
+    cg.add_build_flag("-DUSING_BSEC")
+    cg.add_library("BSEC Software Library", "1.6.1480")

esphome/components/bme680_bsec/bme680_bsec.cpp

@@ -0,0 +1,398 @@
+#ifdef USING_BSEC
+
+#include "bme680_bsec.h"
+#include "esphome/core/log.h"
+#include "esphome/core/helpers.h"
+#include <string>
+
+namespace esphome {
+namespace bme680_bsec {
+
+static const char *TAG = "bme680_bsec.sensor";
+
+static const std::string IAQ_ACCURACY_STATES[4] = {"Stabilizing", "Uncertain", "Calibrating", "Calibrated"};
+
+BME680BSECComponent *BME680BSECComponent::instance;
+
+void BME680BSECComponent::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up BME680 via BSEC...");
+  BME680BSECComponent::instance = this;
+
+  this->bsec_status_ = bsec_init();
+  if (this->bsec_status_ != BSEC_OK) {
+    this->mark_failed();
+    return;
+  }
+
+  this->bme680_.dev_id = this->address_;
+  this->bme680_.intf = BME680_I2C_INTF;
+  this->bme680_.read = BME680BSECComponent::read_bytes_wrapper;
+  this->bme680_.write = BME680BSECComponent::write_bytes_wrapper;
+  this->bme680_.delay_ms = BME680BSECComponent::delay_ms;
+  this->bme680_.amb_temp = 25;
+  this->bme680_.power_mode = BME680_FORCED_MODE;
+
+  this->bme680_status_ = bme680_init(&this->bme680_);
+  if (this->bme680_status_ != BME680_OK) {
+    this->mark_failed();
+    return;
+  }
+
+  if (this->sample_rate_ == SAMPLE_RATE_ULP) {
+    const uint8_t bsec_config[] = {
+#include "config/generic_33v_300s_28d/bsec_iaq.txt"
+    };
+    this->set_config_(bsec_config);
+    this->update_subscription_(BSEC_SAMPLE_RATE_ULP);
+  } else {
+    const uint8_t bsec_config[] = {
+#include "config/generic_33v_3s_28d/bsec_iaq.txt"
+    };
+    this->set_config_(bsec_config);
+    this->update_subscription_(BSEC_SAMPLE_RATE_LP);
+  }
+  if (this->bsec_status_ != BSEC_OK) {
+    this->mark_failed();
+    return;
+  }
+
+  this->load_state_();
+}
+
+void BME680BSECComponent::set_config_(const uint8_t *config) {
+  uint8_t work_buffer[BSEC_MAX_WORKBUFFER_SIZE];
+  this->bsec_status_ = bsec_set_configuration(config, BSEC_MAX_PROPERTY_BLOB_SIZE, work_buffer, sizeof(work_buffer));
+}
+
+void BME680BSECComponent::update_subscription_(float sample_rate) {
+  bsec_sensor_configuration_t virtual_sensors[BSEC_NUMBER_OUTPUTS];
+  int num_virtual_sensors = 0;
+
+  if (this->iaq_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id =
+        this->iaq_mode_ == IAQ_MODE_STATIC ? BSEC_OUTPUT_STATIC_IAQ : BSEC_OUTPUT_IAQ;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  if (this->co2_equivalent_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id = BSEC_OUTPUT_CO2_EQUIVALENT;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  if (this->breath_voc_equivalent_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id = BSEC_OUTPUT_BREATH_VOC_EQUIVALENT;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  if (this->pressure_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id = BSEC_OUTPUT_RAW_PRESSURE;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  if (this->gas_resistance_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id = BSEC_OUTPUT_RAW_GAS;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  if (this->temperature_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id = BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_TEMPERATURE;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  if (this->humidity_sensor_) {
+    virtual_sensors[num_virtual_sensors].sensor_id = BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_HUMIDITY;
+    virtual_sensors[num_virtual_sensors].sample_rate = sample_rate;
+    num_virtual_sensors++;
+  }
+
+  bsec_sensor_configuration_t sensor_settings[BSEC_MAX_PHYSICAL_SENSOR];
+  uint8_t num_sensor_settings = BSEC_MAX_PHYSICAL_SENSOR;
+  this->bsec_status_ =
+      bsec_update_subscription(virtual_sensors, num_virtual_sensors, sensor_settings, &num_sensor_settings);
+}
+
+void BME680BSECComponent::dump_config() {
+  ESP_LOGCONFIG(TAG, "BME680 via BSEC:");
+
+  bsec_version_t version;
+  bsec_get_version(&version);
+  ESP_LOGCONFIG(TAG, "  BSEC Version: %d.%d.%d.%d", version.major, version.minor, version.major_bugfix,
+                version.minor_bugfix);
+
+  LOG_I2C_DEVICE(this);
+
+  if (this->is_failed()) {
+    ESP_LOGE(TAG, "Communication failed (BSEC Status: %d, BME680 Status: %d)", this->bsec_status_,
+             this->bme680_status_);
+  }
+
+  ESP_LOGCONFIG(TAG, "  Temperature Offset: %.2f", this->temperature_offset_);
+  ESP_LOGCONFIG(TAG, "  IAQ Mode: %s", this->iaq_mode_ == IAQ_MODE_STATIC ? "Static" : "Mobile");
+  ESP_LOGCONFIG(TAG, "  Sample Rate: %s", this->sample_rate_ == SAMPLE_RATE_ULP ? "ULP" : "LP");
+  ESP_LOGCONFIG(TAG, "  State Save Interval: %ims", this->state_save_interval_ms_);
+
+  LOG_SENSOR("  ", "Temperature", this->temperature_sensor_);
+  LOG_SENSOR("  ", "Pressure", this->pressure_sensor_);
+  LOG_SENSOR("  ", "Humidity", this->humidity_sensor_);
+  LOG_SENSOR("  ", "Gas Resistance", this->gas_resistance_sensor_);
+  LOG_SENSOR("  ", "IAQ", this->iaq_sensor_);
+  LOG_SENSOR("  ", "Numeric IAQ Accuracy", this->iaq_accuracy_sensor_);
+  LOG_TEXT_SENSOR("  ", "IAQ Accuracy", this->iaq_accuracy_text_sensor_);
+  LOG_SENSOR("  ", "CO2 Equivalent", this->co2_equivalent_sensor_);
+  LOG_SENSOR("  ", "Breath VOC Equivalent", this->breath_voc_equivalent_sensor_);
+}
+
+float BME680BSECComponent::get_setup_priority() const { return setup_priority::DATA; }
+
+void BME680BSECComponent::loop() {
+  this->run_();
+
+  if (this->bsec_status_ < BSEC_OK || this->bme680_status_ < BME680_OK) {
+    this->status_set_error();
+  } else {
+    this->status_clear_error();
+  }
+  if (this->bsec_status_ > BSEC_OK || this->bme680_status_ > BME680_OK) {
+    this->status_set_warning();
+  } else {
+    this->status_clear_warning();
+  }
+}
+
+void BME680BSECComponent::run_() {
+  int64_t curr_time_ns = this->get_time_ns_();
+  if (curr_time_ns < this->next_call_ns_) {
+    return;
+  }
+
+  ESP_LOGV(TAG, "Performing sensor run");
+
+  bsec_bme_settings_t bme680_settings;
+  this->bsec_status_ = bsec_sensor_control(curr_time_ns, &bme680_settings);
+  if (this->bsec_status_ < BSEC_OK) {
+    ESP_LOGW(TAG, "Failed to fetch sensor control settings (BSEC Error Code %d)", this->bsec_status_);
+    return;
+  }
+  this->next_call_ns_ = bme680_settings.next_call;
+
+  this->bme680_.gas_sett.run_gas = bme680_settings.run_gas;
+  this->bme680_.tph_sett.os_hum = bme680_settings.humidity_oversampling;
+  this->bme680_.tph_sett.os_temp = bme680_settings.temperature_oversampling;
+  this->bme680_.tph_sett.os_pres = bme680_settings.pressure_oversampling;
+  this->bme680_.gas_sett.heatr_temp = bme680_settings.heater_temperature;
+  this->bme680_.gas_sett.heatr_dur = bme680_settings.heating_duration;
+  uint16_t desired_settings =
+      BME680_OST_SEL | BME680_OSP_SEL | BME680_OSH_SEL | BME680_FILTER_SEL | BME680_GAS_SENSOR_SEL;
+  this->bme680_status_ = bme680_set_sensor_settings(desired_settings, &this->bme680_);
+  if (this->bme680_status_ != BME680_OK) {
+    ESP_LOGW(TAG, "Failed to set sensor settings (BME680 Error Code %d)", this->bme680_status_);
+    return;
+  }
+
+  this->bme680_status_ = bme680_set_sensor_mode(&this->bme680_);
+  if (this->bme680_status_ != BME680_OK) {
+    ESP_LOGW(TAG, "Failed to set sensor mode (BME680 Error Code %d)", this->bme680_status_);
+    return;
+  }
+
+  uint16_t meas_dur = 0;
+  bme680_get_profile_dur(&meas_dur, &this->bme680_);
+  ESP_LOGV(TAG, "Queueing read in %ums", meas_dur);
+  this->set_timeout("read", meas_dur, [this, bme680_settings]() { this->read_(bme680_settings); });
+}
+
+void BME680BSECComponent::read_(bsec_bme_settings_t bme680_settings) {
+  ESP_LOGV(TAG, "Reading data");
+  struct bme680_field_data data;
+  this->bme680_status_ = bme680_get_sensor_data(&data, &this->bme680_);
+
+  if (this->bme680_status_ != BME680_OK) {
+    ESP_LOGW(TAG, "Failed to get sensor data (BME680 Error Code %d)", this->bme680_status_);
+    return;
+  }
+  if (!(data.status & BME680_NEW_DATA_MSK)) {
+    ESP_LOGD(TAG, "BME680 did not report new data");
+    return;
+  }
+
+  bsec_input_t inputs[BSEC_MAX_PHYSICAL_SENSOR];  // Temperature, Pressure, Humidity & Gas Resistance
+  uint8_t num_inputs = 0;
+  int64_t curr_time_ns = this->get_time_ns_();
+
+  if (bme680_settings.process_data & BSEC_PROCESS_TEMPERATURE) {
+    inputs[num_inputs].sensor_id = BSEC_INPUT_TEMPERATURE;
+    inputs[num_inputs].signal = data.temperature / 100.0f;
+    inputs[num_inputs].time_stamp = curr_time_ns;
+    num_inputs++;
+
+    // Temperature offset from the real temperature due to external heat sources
+    inputs[num_inputs].sensor_id = BSEC_INPUT_HEATSOURCE;
+    inputs[num_inputs].signal = this->temperature_offset_;
+    inputs[num_inputs].time_stamp = curr_time_ns;
+    num_inputs++;
+  }
+  if (bme680_settings.process_data & BSEC_PROCESS_HUMIDITY) {
+    inputs[num_inputs].sensor_id = BSEC_INPUT_HUMIDITY;
+    inputs[num_inputs].signal = data.humidity / 1000.0f;
+    inputs[num_inputs].time_stamp = curr_time_ns;
+    num_inputs++;
+  }
+  if (bme680_settings.process_data & BSEC_PROCESS_PRESSURE) {
+    inputs[num_inputs].sensor_id = BSEC_INPUT_PRESSURE;
+    inputs[num_inputs].signal = data.pressure;
+    inputs[num_inputs].time_stamp = curr_time_ns;
+    num_inputs++;
+  }
+  if (bme680_settings.process_data & BSEC_PROCESS_GAS) {
+    inputs[num_inputs].sensor_id = BSEC_INPUT_GASRESISTOR;
+    inputs[num_inputs].signal = data.gas_resistance;
+    inputs[num_inputs].time_stamp = curr_time_ns;
+    num_inputs++;
+  }
+  if (num_inputs < 1) {
+    ESP_LOGD(TAG, "No signal inputs available for BSEC");
+    return;
+  }
+
+  bsec_output_t outputs[BSEC_NUMBER_OUTPUTS];
+  uint8_t num_outputs = BSEC_NUMBER_OUTPUTS;
+  this->bsec_status_ = bsec_do_steps(inputs, num_inputs, outputs, &num_outputs);
+  if (this->bsec_status_ != BSEC_OK) {
+    ESP_LOGW(TAG, "BSEC failed to process signals (BSEC Error Code %d)", this->bsec_status_);
+    return;
+  }
+  if (num_outputs < 1) {
+    ESP_LOGD(TAG, "No signal outputs provided by BSEC");
+    return;
+  }
+
+  this->publish_(outputs, num_outputs);
+}
+
+void BME680BSECComponent::publish_(const bsec_output_t *outputs, uint8_t num_outputs) {
+  ESP_LOGV(TAG, "Publishing sensor states");
+  for (uint8_t i = 0; i < num_outputs; i++) {
+    switch (outputs[i].sensor_id) {
+      case BSEC_OUTPUT_IAQ:
+      case BSEC_OUTPUT_STATIC_IAQ:
+        uint8_t accuracy;
+        accuracy = outputs[i].accuracy;
+        this->publish_sensor_state_(this->iaq_sensor_, outputs[i].signal);
+        this->publish_sensor_state_(this->iaq_accuracy_text_sensor_, IAQ_ACCURACY_STATES[accuracy]);
+        this->publish_sensor_state_(this->iaq_accuracy_sensor_, accuracy, true);
+
+        // Queue up an opportunity to save state
+        this->defer("save_state", [this, accuracy]() { this->save_state_(accuracy); });
+        break;
+      case BSEC_OUTPUT_CO2_EQUIVALENT:
+        this->publish_sensor_state_(this->co2_equivalent_sensor_, outputs[i].signal);
+        break;
+      case BSEC_OUTPUT_BREATH_VOC_EQUIVALENT:
+        this->publish_sensor_state_(this->breath_voc_equivalent_sensor_, outputs[i].signal);
+        break;
+      case BSEC_OUTPUT_RAW_PRESSURE:
+        this->publish_sensor_state_(this->pressure_sensor_, outputs[i].signal / 100.0f);
+        break;
+      case BSEC_OUTPUT_RAW_GAS:
+        this->publish_sensor_state_(this->gas_resistance_sensor_, outputs[i].signal);
+        break;
+      case BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_TEMPERATURE:
+        this->publish_sensor_state_(this->temperature_sensor_, outputs[i].signal);
+        break;
+      case BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_HUMIDITY:
+        this->publish_sensor_state_(this->humidity_sensor_, outputs[i].signal);
+        break;
+    }
+  }
+}
+
+int64_t BME680BSECComponent::get_time_ns_() {
+  int64_t time_ms = millis();
+  if (this->last_time_ms_ > time_ms) {
+    this->millis_overflow_counter_++;
+  }
+  this->last_time_ms_ = time_ms;
+
+  return (time_ms + ((int64_t) this->millis_overflow_counter_ << 32)) * INT64_C(1000000);
+}
+
+void BME680BSECComponent::publish_sensor_state_(sensor::Sensor *sensor, float value, bool change_only) {
+  if (!sensor || (change_only && sensor->has_state() && sensor->state == value)) {
+    return;
+  }
+  sensor->publish_state(value);
+}
+
+void BME680BSECComponent::publish_sensor_state_(text_sensor::TextSensor *sensor, std::string value) {
+  if (!sensor || (sensor->has_state() && sensor->state == value)) {
+    return;
+  }
+  sensor->publish_state(value);
+}
+
+int8_t BME680BSECComponent::read_bytes_wrapper(uint8_t address, uint8_t a_register, uint8_t *data, uint16_t len) {
+  return BME680BSECComponent::instance->read_bytes(a_register, data, len) ? 0 : -1;
+}
+
+int8_t BME680BSECComponent::write_bytes_wrapper(uint8_t address, uint8_t a_register, uint8_t *data, uint16_t len) {
+  return BME680BSECComponent::instance->write_bytes(a_register, data, len) ? 0 : -1;
+}
+
+void BME680BSECComponent::delay_ms(uint32_t period) {
+  ESP_LOGV(TAG, "Delaying for %ums", period);
+  delay(period);
+}
+
+void BME680BSECComponent::load_state_() {
+  uint32_t hash = fnv1_hash("bme680_bsec_state_" + to_string(this->address_));
+  this->bsec_state_ = global_preferences.make_preference<uint8_t[BSEC_MAX_STATE_BLOB_SIZE]>(hash, true);
+
+  uint8_t state[BSEC_MAX_STATE_BLOB_SIZE];
+  if (this->bsec_state_.load(&state)) {
+    ESP_LOGV(TAG, "Loading state");
+    uint8_t work_buffer[BSEC_MAX_WORKBUFFER_SIZE];
+    this->bsec_status_ = bsec_set_state(state, BSEC_MAX_STATE_BLOB_SIZE, work_buffer, sizeof(work_buffer));
+    if (this->bsec_status_ != BSEC_OK) {
+      ESP_LOGW(TAG, "Failed to load state (BSEC Error Code %d)", this->bsec_status_);
+    }
+    ESP_LOGI(TAG, "Loaded state");
+  }
+}
+
+void BME680BSECComponent::save_state_(uint8_t accuracy) {
+  if (accuracy < 3 || (millis() - this->last_state_save_ms_ < this->state_save_interval_ms_)) {
+    return;
+  }
+
+  ESP_LOGV(TAG, "Saving state");
+
+  uint8_t state[BSEC_MAX_STATE_BLOB_SIZE];
+  uint8_t work_buffer[BSEC_MAX_STATE_BLOB_SIZE];
+  uint32_t num_serialized_state = BSEC_MAX_STATE_BLOB_SIZE;
+
+  this->bsec_status_ =
+      bsec_get_state(0, state, BSEC_MAX_STATE_BLOB_SIZE, work_buffer, BSEC_MAX_STATE_BLOB_SIZE, &num_serialized_state);
+  if (this->bsec_status_ != BSEC_OK) {
+    ESP_LOGW(TAG, "Failed fetch state for save (BSEC Error Code %d)", this->bsec_status_);
+    return;
+  }
+
+  if (!this->bsec_state_.save(&state)) {
+    ESP_LOGW(TAG, "Failed to save state");
+    return;
+  }
+  this->last_state_save_ms_ = millis();
+
+  ESP_LOGI(TAG, "Saved state");
+}
+
+}  // namespace bme680_bsec
+}  // namespace esphome
+
+#endif

esphome/components/bme680_bsec/bme680_bsec.h

@@ -0,0 +1,106 @@
+#ifdef USING_BSEC
+
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/text_sensor/text_sensor.h"
+#include "esphome/components/i2c/i2c.h"
+#include "esphome/core/preferences.h"
+#include <bsec.h>
+#include <map>
+
+namespace esphome {
+namespace bme680_bsec {
+
+enum IAQMode {
+  IAQ_MODE_STATIC = 0,
+  IAQ_MODE_MOBILE = 1,
+};
+
+enum SampleRate {
+  SAMPLE_RATE_LP = 0,
+  SAMPLE_RATE_ULP = 1,
+};
+
+class BME680BSECComponent : public Component, public i2c::I2CDevice {
+ public:
+  void set_temperature_offset(float offset) { this->temperature_offset_ = offset; }
+  void set_iaq_mode(IAQMode iaq_mode) { this->iaq_mode_ = iaq_mode; }
+  void set_sample_rate(SampleRate sample_rate) { this->sample_rate_ = sample_rate; }
+  void set_state_save_interval(uint32_t interval) { this->state_save_interval_ms_ = interval; }
+
+  void set_temperature_sensor(sensor::Sensor *temperature_sensor) { temperature_sensor_ = temperature_sensor; }
+  void set_pressure_sensor(sensor::Sensor *pressure_sensor) { pressure_sensor_ = pressure_sensor; }
+  void set_humidity_sensor(sensor::Sensor *humidity_sensor) { humidity_sensor_ = humidity_sensor; }
+  void set_gas_resistance_sensor(sensor::Sensor *gas_resistance_sensor) {
+    gas_resistance_sensor_ = gas_resistance_sensor;
+  }
+  void set_iaq_sensor(sensor::Sensor *iaq_sensor) { iaq_sensor_ = iaq_sensor; }
+  void set_iaq_accuracy_text_sensor(text_sensor::TextSensor *iaq_accuracy_text_sensor) {
+    iaq_accuracy_text_sensor_ = iaq_accuracy_text_sensor;
+  }
+  void set_iaq_accuracy_sensor(sensor::Sensor *iaq_accuracy_sensor) { iaq_accuracy_sensor_ = iaq_accuracy_sensor; }
+  void set_co2_equivalent_sensor(sensor::Sensor *co2_equivalent_sensor) {
+    co2_equivalent_sensor_ = co2_equivalent_sensor;
+  }
+  void set_breath_voc_equivalent_sensor(sensor::Sensor *breath_voc_equivalent_sensor) {
+    breath_voc_equivalent_sensor_ = breath_voc_equivalent_sensor;
+  }
+
+  static BME680BSECComponent *instance;
+  static int8_t read_bytes_wrapper(uint8_t address, uint8_t a_register, uint8_t *data, uint16_t len);
+  static int8_t write_bytes_wrapper(uint8_t address, uint8_t a_register, uint8_t *data, uint16_t len);
+  static void delay_ms(uint32_t period);
+
+  void setup() override;
+  void dump_config() override;
+  float get_setup_priority() const override;
+  void loop() override;
+
+ protected:
+  void set_config_(const uint8_t *config);
+  void update_subscription_(float sample_rate);
+
+  void run_();
+  void read_(bsec_bme_settings_t bme680_settings);
+  void publish_(const bsec_output_t *outputs, uint8_t num_outputs);
+  int64_t get_time_ns_();
+
+  void publish_sensor_state_(sensor::Sensor *sensor, float value, bool change_only = false);
+  void publish_sensor_state_(text_sensor::TextSensor *sensor, std::string value);
+
+  void load_state_();
+  void save_state_(uint8_t accuracy);
+
+  struct bme680_dev bme680_;
+  bsec_library_return_t bsec_status_{BSEC_OK};
+  int8_t bme680_status_{BME680_OK};
+
+  int64_t last_time_ms_{0};
+  uint32_t millis_overflow_counter_{0};
+  int64_t next_call_ns_{0};
+
+  ESPPreferenceObject bsec_state_;
+  uint32_t state_save_interval_ms_{21600000};  // 6 hours - 4 times a day
+  uint32_t last_state_save_ms_ = 0;
+
+  float temperature_offset_{0};
+  IAQMode iaq_mode_{IAQ_MODE_STATIC};
+  SampleRate sample_rate_{SAMPLE_RATE_LP};
+
+  sensor::Sensor *temperature_sensor_;
+  sensor::Sensor *pressure_sensor_;
+  sensor::Sensor *humidity_sensor_;
+  sensor::Sensor *gas_resistance_sensor_;
+  sensor::Sensor *iaq_sensor_;
+  text_sensor::TextSensor *iaq_accuracy_text_sensor_;
+  sensor::Sensor *iaq_accuracy_sensor_;
+  sensor::Sensor *co2_equivalent_sensor_;
+  sensor::Sensor *breath_voc_equivalent_sensor_;
+};
+
+}  // namespace bme680_bsec
+}  // namespace esphome
+
+#endif

esphome/components/bme680_bsec/sensor.py

@@ -0,0 +1,91 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor
+from esphome.const import (
+    CONF_GAS_RESISTANCE,
+    CONF_HUMIDITY,
+    CONF_PRESSURE,
+    CONF_TEMPERATURE,
+    DEVICE_CLASS_EMPTY,
+    DEVICE_CLASS_HUMIDITY,
+    DEVICE_CLASS_PRESSURE,
+    DEVICE_CLASS_TEMPERATURE,
+    UNIT_CELSIUS,
+    UNIT_EMPTY,
+    UNIT_HECTOPASCAL,
+    UNIT_OHM,
+    UNIT_PARTS_PER_MILLION,
+    UNIT_PERCENT,
+    ICON_GAS_CYLINDER,
+    ICON_GAUGE,
+    ICON_THERMOMETER,
+    ICON_WATER_PERCENT,
+)
+from esphome.core import coroutine
+from . import BME680BSECComponent, CONF_BME680_BSEC_ID
+
+DEPENDENCIES = ["bme680_bsec"]
+
+CONF_IAQ = "iaq"
+CONF_IAQ_ACCURACY = "iaq_accuracy"
+CONF_CO2_EQUIVALENT = "co2_equivalent"
+CONF_BREATH_VOC_EQUIVALENT = "breath_voc_equivalent"
+UNIT_IAQ = "IAQ"
+ICON_ACCURACY = "mdi:checkbox-marked-circle-outline"
+ICON_TEST_TUBE = "mdi:test-tube"
+
+TYPES = {
+    CONF_TEMPERATURE: "set_temperature_sensor",
+    CONF_PRESSURE: "set_pressure_sensor",
+    CONF_HUMIDITY: "set_humidity_sensor",
+    CONF_GAS_RESISTANCE: "set_gas_resistance_sensor",
+    CONF_IAQ: "set_iaq_sensor",
+    CONF_IAQ_ACCURACY: "set_iaq_accuracy_sensor",
+    CONF_CO2_EQUIVALENT: "set_co2_equivalent_sensor",
+    CONF_BREATH_VOC_EQUIVALENT: "set_breath_voc_equivalent_sensor",
+}
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(CONF_BME680_BSEC_ID): cv.use_id(BME680BSECComponent),
+        cv.Optional(CONF_TEMPERATURE): sensor.sensor_schema(
+            UNIT_CELSIUS, ICON_THERMOMETER, 1, DEVICE_CLASS_TEMPERATURE
+        ),
+        cv.Optional(CONF_PRESSURE): sensor.sensor_schema(
+            UNIT_HECTOPASCAL, ICON_GAUGE, 1, DEVICE_CLASS_PRESSURE
+        ),
+        cv.Optional(CONF_HUMIDITY): sensor.sensor_schema(
+            UNIT_PERCENT, ICON_WATER_PERCENT, 1, DEVICE_CLASS_HUMIDITY
+        ),
+        cv.Optional(CONF_GAS_RESISTANCE): sensor.sensor_schema(
+            UNIT_OHM, ICON_GAS_CYLINDER, 0, DEVICE_CLASS_EMPTY
+        ),
+        cv.Optional(CONF_IAQ): sensor.sensor_schema(
+            UNIT_IAQ, ICON_GAUGE, 0, DEVICE_CLASS_EMPTY
+        ),
+        cv.Optional(CONF_IAQ_ACCURACY): sensor.sensor_schema(
+            UNIT_EMPTY, ICON_ACCURACY, 0, DEVICE_CLASS_EMPTY
+        ),
+        cv.Optional(CONF_CO2_EQUIVALENT): sensor.sensor_schema(
+            UNIT_PARTS_PER_MILLION, ICON_TEST_TUBE, 1, DEVICE_CLASS_EMPTY
+        ),
+        cv.Optional(CONF_BREATH_VOC_EQUIVALENT): sensor.sensor_schema(
+            UNIT_PARTS_PER_MILLION, ICON_TEST_TUBE, 1, DEVICE_CLASS_EMPTY
+        ),
+    }
+)
+
+
+@coroutine
+def setup_conf(config, key, hub, funcName):
+    if key in config:
+        conf = config[key]
+        var = yield sensor.new_sensor(conf)
+        func = getattr(hub, funcName)
+        cg.add(func(var))
+
+
+def to_code(config):
+    hub = yield cg.get_variable(config[CONF_BME680_BSEC_ID])
+    for key, funcName in TYPES.items():
+        yield setup_conf(config, key, hub, funcName)

esphome/components/bme680_bsec/text_sensor.py

@@ -0,0 +1,41 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import text_sensor
+from esphome.const import CONF_ID, CONF_ICON
+from esphome.core import coroutine
+from . import BME680BSECComponent, CONF_BME680_BSEC_ID
+
+DEPENDENCIES = ["bme680_bsec"]
+
+CONF_IAQ_ACCURACY = "iaq_accuracy"
+ICON_ACCURACY = "mdi:checkbox-marked-circle-outline"
+
+TYPES = {CONF_IAQ_ACCURACY: "set_iaq_accuracy_text_sensor"}
+
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(CONF_BME680_BSEC_ID): cv.use_id(BME680BSECComponent),
+        cv.Optional(CONF_IAQ_ACCURACY): text_sensor.TEXT_SENSOR_SCHEMA.extend(
+            {
+                cv.GenerateID(): cv.declare_id(text_sensor.TextSensor),
+                cv.Optional(CONF_ICON, default=ICON_ACCURACY): cv.icon,
+            }
+        ),
+    }
+)
+
+
+@coroutine
+def setup_conf(config, key, hub, funcName):
+    if key in config:
+        conf = config[key]
+        var = cg.new_Pvariable(conf[CONF_ID])
+        yield text_sensor.register_text_sensor(var, conf)
+        func = getattr(hub, funcName)
+        cg.add(func(var))
+
+
+def to_code(config):
+    hub = yield cg.get_variable(config[CONF_BME680_BSEC_ID])
+    for key, funcName in TYPES.items():
+        yield setup_conf(config, key, hub, funcName)