BME280 dig_T*, dig_P*, and dig_H* registers are trimming coefficients unique to each part. Therefore the best thing you could do is to copy 1 set of values from a sensor to simulate the output of that specific sensor. Maybe what you are looking for is simply the API to read uncompensated data ? First you can grab the raw data directly from the bus with this API: int8_t bme280_get_regs(uint8_t reg_addr, uint8_t *reg_data, uint16_t len, const struct bme280_dev *dev); Then you parse it into an uncompensated data structure with this API: void bme280_parse_sensor_data(const uint8_t *reg_data, struct bme280_uncomp_data *uncomp_data); The latest BME280 driver is always found on Bosch Sensortec's official GitHub page.
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