Hi kevin-north,
Thanks for your inquiry. BSEC provides state save and load interfaces. Before shutting down your device, you can use the state_save() interface to obtain calibration parameters and save them to Flash or EEPROM. After the next power on, you can read the previously saved calibration parameters from Flash or EEPROM and call the state_load() interface to set it to BSEC. In this way, you can continue calibrating BME688 on the next boot.
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