diff --git a/drivers/sensor/bosch/bme280/bme280.c b/drivers/sensor/bosch/bme280/bme280.c index a1990e3d14d..05566104ce6 100644 --- a/drivers/sensor/bosch/bme280/bme280.c +++ b/drivers/sensor/bosch/bme280/bme280.c @@ -33,6 +33,11 @@ LOG_MODULE_REGISTER(BME280, CONFIG_SENSOR_LOG_LEVEL); */ #define BME280_MEASUREMENT_TIMEOUT_MS 150 +/* Start-up time - Time to first communication after both Vdd > 1.58V and + * Vddio > 0.65V + */ +#define BME280_START_UP_TIME_MS 2 + /* Equation 9.1, with the fractional parts rounded down */ #define BME280_EXPECTED_SAMPLE_TIME_MS \ 1 + BME280_TEMP_SAMPLE_TIME + BME280_PRESS_SAMPLE_TIME + BME280_HUMIDITY_SAMPLE_TIME @@ -332,6 +337,8 @@ static int bme280_chip_init(const struct device *dev) return err; } + k_msleep(BME280_START_UP_TIME_MS); + err = bme280_reg_read(dev, BME280_REG_ID, &data->chip_id, 1); if (err < 0) { LOG_DBG("ID read failed: %d", err);