wmprintf("BME680\r\n");
	int8_t rslt = BME680_OK;

	struct bme680_dev gas_sensor;
	gas_sensor.dev_id = BME680_I2C_ADDR_PRIMARY;
	gas_sensor.intf = BME680_I2C_INTF;
	gas_sensor.read = user_i2c_read;
	gas_sensor.write = user_i2c_write;
	gas_sensor.delay_ms = user_delay_ms;
	/* amb_temp can be set to 25 prior to configuring the gas sensor
	 * or by performing a few temperature readings without operating the gas sensor.
	 */
	gas_sensor.amb_temp = 25;

	rslt = bme680_init(&gas_sensor);
	wmprintf("bme680_init done: %d\r\n", rslt);
	wmprintf("bme680.chip_id: 0x%02X\r\n", gas_sensor.chip_id);

	uint16_t set_required_settings;

	/* Set the temperature, pressure and humidity settings */
	gas_sensor.tph_sett.os_hum = BME680_OS_2X;
	gas_sensor.tph_sett.os_pres = BME680_OS_4X;
	gas_sensor.tph_sett.os_temp = BME680_OS_8X;
	gas_sensor.tph_sett.filter = BME680_FILTER_SIZE_3;

	/* Set the remaining gas sensor settings and link the heating profile */
	gas_sensor.gas_sett.run_gas = BME680_ENABLE_GAS_MEAS;
	/* Create a ramp heat waveform in 3 steps */
	gas_sensor.gas_sett.heatr_temp = 320; /* degree Celsius */
	gas_sensor.gas_sett.heatr_dur = 2000; /* milliseconds */

	/* Select the power mode */
	/* Must be set before writing the sensor configuration */
	gas_sensor.power_mode = BME680_FORCED_MODE;

	/* Set the required sensor settings needed */
	set_required_settings = BME680_OST_SEL | BME680_OSP_SEL | BME680_OSH_SEL | BME680_FILTER_SEL | BME680_GAS_SENSOR_SEL;

	/* Set the desired sensor configuration */
	rslt = bme680_set_sensor_settings(set_required_settings, &gas_sensor);
	wmprintf("bme680_set_sensor_settings done: %d\r\n", rslt);
	/* Set the power mode */
	rslt = bme680_set_sensor_mode(&gas_sensor);
	wmprintf("bme680_set_sensor_mode done: %d\r\n", rslt);
	/* Get the total measurement duration so as to sleep or wait till the
	 * measurement is complete */
	uint16_t meas_period;
	bme680_get_profile_dur(&meas_period, &gas_sensor);

	struct bme680_field_data data;

	while (1) {
		user_delay_ms(meas_period); /* Delay till the measurement is ready */

		rslt = bme680_get_sensor_data(&data, &gas_sensor);
		//wmprintf("data.status: %d\r\n", data.status);
		wmprintf("T: %.2f degC, P: %.2f hPa, H %.2f %%rH ", data.temperature / 100.0f, data.pressure / 100.0f, data.humidity / 1000.0f);
		/* Avoid using measurements from an unstable heating setup */
		if (data.status & BME680_GASM_VALID_MSK){
			wmprintf(", G: %d ohms", data.gas_resistance);
		}
		wmprintf("\r\n");

		/* Trigger the next measurement if you would like to read data out continuously */
		if (gas_sensor.power_mode == BME680_FORCED_MODE) {
			rslt = bme680_set_sensor_mode(&gas_sensor);
		}
	}