Add support for 1.8V-powered devices (#6234)

esphome/components/bme680_bsec/__init__.py

@@ -11,6 +11,7 @@ MULTI_CONF = True
 CONF_BME680_BSEC_ID = "bme680_bsec_id"
 CONF_TEMPERATURE_OFFSET = "temperature_offset"
 CONF_IAQ_MODE = "iaq_mode"
+CONF_SUPPLY_VOLTAGE = "supply_voltage"
 CONF_SAMPLE_RATE = "sample_rate"
 CONF_STATE_SAVE_INTERVAL = "state_save_interval"
 
@@ -22,6 +23,12 @@ IAQ_MODE_OPTIONS = {
     "MOBILE": IAQMode.IAQ_MODE_MOBILE,
 }
 
+SupplyVoltage = bme680_bsec_ns.enum("SupplyVoltage")
+SUPPLY_VOLTAGE_OPTIONS = {
+    "1.8V": SupplyVoltage.SUPPLY_VOLTAGE_1V8,
+    "3.3V": SupplyVoltage.SUPPLY_VOLTAGE_3V3,
+}
+
 SampleRate = bme680_bsec_ns.enum("SampleRate")
 SAMPLE_RATE_OPTIONS = {
     "LP": SampleRate.SAMPLE_RATE_LP,
@@ -40,6 +47,9 @@ CONFIG_SCHEMA = cv.All(
             cv.Optional(CONF_IAQ_MODE, default="STATIC"): cv.enum(
                 IAQ_MODE_OPTIONS, upper=True
             ),
+            cv.Optional(CONF_SUPPLY_VOLTAGE, default="3.3V"): cv.enum(
+                SUPPLY_VOLTAGE_OPTIONS, upper=True
+            ),
             cv.Optional(CONF_SAMPLE_RATE, default="LP"): cv.enum(
                 SAMPLE_RATE_OPTIONS, upper=True
             ),
@@ -67,6 +77,7 @@ async def to_code(config):
     cg.add(var.set_device_id(str(config[CONF_ID])))
     cg.add(var.set_temperature_offset(config[CONF_TEMPERATURE_OFFSET]))
     cg.add(var.set_iaq_mode(config[CONF_IAQ_MODE]))
+    cg.add(var.set_supply_voltage(config[CONF_SUPPLY_VOLTAGE]))
     cg.add(var.set_sample_rate(config[CONF_SAMPLE_RATE]))
     cg.add(
         var.set_state_save_interval(config[CONF_STATE_SAVE_INTERVAL].total_milliseconds)

esphome/components/bme680_bsec/bme680_bsec.cpp

@@ -52,17 +52,33 @@ void BME680BSECComponent::setup() {
 
 void BME680BSECComponent::set_config_() {
   if (this->sample_rate_ == SAMPLE_RATE_ULP) {
+    if (this->supply_voltage_ == SUPPLY_VOLTAGE_3V3) {
       const uint8_t config[] = {
 #include "config/generic_33v_300s_28d/bsec_iaq.txt"
       };
       this->bsec_status_ =
           bsec_set_configuration(config, BSEC_MAX_PROPERTY_BLOB_SIZE, this->work_buffer_, sizeof(this->work_buffer_));
-  } else {
+    } else {  // SUPPLY_VOLTAGE_1V8
+      const uint8_t config[] = {
+#include "config/generic_18v_300s_28d/bsec_iaq.txt"
+      };
+      this->bsec_status_ =
+          bsec_set_configuration(config, BSEC_MAX_PROPERTY_BLOB_SIZE, this->work_buffer_, sizeof(this->work_buffer_));
+    }
+  } else {  // SAMPLE_RATE_LP
+    if (this->supply_voltage_ == SUPPLY_VOLTAGE_3V3) {
       const uint8_t config[] = {
 #include "config/generic_33v_3s_28d/bsec_iaq.txt"
       };
       this->bsec_status_ =
           bsec_set_configuration(config, BSEC_MAX_PROPERTY_BLOB_SIZE, this->work_buffer_, sizeof(this->work_buffer_));
+    } else {  // SUPPLY_VOLTAGE_1V8
+      const uint8_t config[] = {
+#include "config/generic_18v_3s_28d/bsec_iaq.txt"
+      };
+      this->bsec_status_ =
+          bsec_set_configuration(config, BSEC_MAX_PROPERTY_BLOB_SIZE, this->work_buffer_, sizeof(this->work_buffer_));
+    }
   }
 }
 
@@ -145,6 +161,7 @@ void BME680BSECComponent::dump_config() {
 
   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, "  Supply Voltage: %sV", this->supply_voltage_ == SUPPLY_VOLTAGE_3V3 ? "3.3" : "1.8");
   ESP_LOGCONFIG(TAG, "  Sample Rate: %s", BME680_BSEC_SAMPLE_RATE_LOG(this->sample_rate_));
   ESP_LOGCONFIG(TAG, "  State Save Interval: %ims", this->state_save_interval_ms_);
 

esphome/components/bme680_bsec/bme680_bsec.h

@@ -21,6 +21,11 @@ enum IAQMode {
   IAQ_MODE_MOBILE = 1,
 };
 
+enum SupplyVoltage {
+  SUPPLY_VOLTAGE_3V3 = 0,
+  SUPPLY_VOLTAGE_1V8 = 1,
+};
+
 enum SampleRate {
   SAMPLE_RATE_LP = 0,
   SAMPLE_RATE_ULP = 1,
@@ -35,6 +40,7 @@ class BME680BSECComponent : public Component, public i2c::I2CDevice {
   void set_temperature_offset(float offset) { this->temperature_offset_ = offset; }
   void set_iaq_mode(IAQMode iaq_mode) { this->iaq_mode_ = iaq_mode; }
   void set_state_save_interval(uint32_t interval) { this->state_save_interval_ms_ = interval; }
+  void set_supply_voltage(SupplyVoltage supply_voltage) { this->supply_voltage_ = supply_voltage; }
 
   void set_sample_rate(SampleRate sample_rate) { this->sample_rate_ = sample_rate; }
   void set_temperature_sample_rate(SampleRate sample_rate) { this->temperature_sample_rate_ = sample_rate; }
@@ -109,6 +115,7 @@ class BME680BSECComponent : public Component, public i2c::I2CDevice {
   std::string device_id_;
   float temperature_offset_{0};
   IAQMode iaq_mode_{IAQ_MODE_STATIC};
+  SupplyVoltage supply_voltage_;
 
   SampleRate sample_rate_{SAMPLE_RATE_LP};  // Core/gas sample rate
   SampleRate temperature_sample_rate_{SAMPLE_RATE_DEFAULT};