BME688 Environmental Sensor

// Requires the esp-idf-lib BME680 driver (BME688-compatible) from the ESP Component Registry:
//   idf.py add-dependency "esp-idf-lib/bme680^1.0.7"

#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "bme680.h"  // BME688 is register-compatible with the BME680 in T/RH/P/gas mode

#define SDA_GPIO GPIO_NUM_21
#define SCL_GPIO GPIO_NUM_22

void app_main(void)
{
    ESP_ERROR_CHECK(i2cdev_init());

    bme680_t sensor;
    memset(&sensor, 0, sizeof(bme680_t));
    ESP_ERROR_CHECK(bme680_init_desc(&sensor, BME680_I2C_ADDR_1, 0, SDA_GPIO, SCL_GPIO));
    ESP_ERROR_CHECK(bme680_init_sensor(&sensor));

    bme680_set_oversampling_rates(&sensor, BME680_OSR_4X, BME680_OSR_2X, BME680_OSR_2X);
    bme680_set_filter_size(&sensor, BME680_IIR_SIZE_7);
    bme680_set_heater_profile(&sensor, 0, 320, 150); // 320 C for 150 ms
    bme680_use_heater_profile(&sensor, 0);

    uint32_t duration;
    bme680_get_measurement_duration(&sensor, &duration);

    while (1) {
        bme680_values_float_t values;
        if (bme680_force_measurement(&sensor) == ESP_OK) {
            vTaskDelay(duration);
            if (bme680_get_results_float(&sensor, &values) == ESP_OK)
                printf("Temp %.2f C, Hum %.2f%%, Press %.2f hPa, Gas %.0f Ohm\n",
                       values.temperature, values.humidity,
                       values.pressure, values.gas_resistance);
        }
        vTaskDelay(pdMS_TO_TICKS(2000));
    }
}

i2c:
  sda: GPIO21
  scl: GPIO22

sensor:
  - platform: bme680
    temperature:
      name: "BME688 Temperature"
    pressure:
      name: "BME688 Pressure"
    humidity:
      name: "BME688 Humidity"
    gas_resistance:
      name: "BME688 Gas Resistance"
    address: 0x76

[env:esp32dev]
platform = espressif32
board = esp32dev
framework = arduino
lib_deps = 
    adafruit/Adafruit BME680 Library
    wire
monitor_speed = 115200

#include <Wire.h>
#include "Adafruit_BME680.h"

Adafruit_BME680 bme;

void setup() {
  Serial.begin(115200);
  if (!bme.begin()) {
    Serial.println("Could not find a valid BME688 sensor, check wiring!");
    while (1);
  }
}

void loop() {
  Serial.print("Temperature: ");
  Serial.print(bme.readTemperature());
  Serial.println(" *C");

  Serial.print("Pressure: ");
  Serial.print(bme.readPressure() / 100.0);
  Serial.println(" hPa");

  Serial.print("Humidity: ");
  Serial.print(bme.readHumidity());
  Serial.println(" %");

  Serial.print("Gas Resistance: ");
  Serial.print(bme.readGas() / 1000.0);
  Serial.println(" KOhms");
  delay(2000);
}

# Requires driver: bme680 - install with: mpremote mip install github:robert-hh/BME680-Micropython
from time import sleep
from machine import I2C, Pin
from bme680 import BME680_I2C

# Initialize I2C (SDA=GPIO21, SCL=GPIO22)
i2c = I2C(0, scl=Pin(22), sda=Pin(21))

# Initialize BME680 (address 0x77; pass address=0x76 if SDO is low)
bme = BME680_I2C(i2c=i2c)

while True:
    print("Temperature: {:.2f} C".format(bme.temperature))
    print("Pressure: {:.2f} hPa".format(bme.pressure))
    print("Humidity: {:.2f} %".format(bme.humidity))
    print("Gas: {:.1f} kOhm".format(bme.gas / 1000))
    sleep(2)