Hi mgchoi,
The array is used to cache the contents of the config file for segmented writing to the sensor. Burst write is to write multiple bytes at one time. Don't write one by yourself.
There was BMA456 sensor API on github which implemented how to access sensor by host MCU. https://github.com/BoschSensortec/BMA456-Sensor-API/tree/master/bma456_examples
bma4_write_config_file() function in sensor API implement loading config file.
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