Hi smoxy,
If you would like to verify your config file with one BME688 on Adafruit HUZZAH32 - ESP32 Feather, you should run the example code under https://github.com/boschsensortec/Bosch-BSEC2-Library/blob/master/examples/generic_examples/basic_config_state/basic_config_state.ino, not https://github.com/boschsensortec/Bosch-BSEC2-Library/tree/master/examples/bme68x_demo_sample
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