Hi Jichen,
Sorry for late response.
Your setting is not correct.
Normal mode (Performance mode is available) range is 12.5 Hz to 1600Hz.
And, 6.25 Hz or lower Hz should be set to low power mode.
You have to put "config.cfg.acc.filter_perf = BMI2_POWER_OPT_MODE;"
You can check the ODR in data sheet. 4.6.4 Accelerometer Data Processing in Normal and Performance Mode and 4.6.5 Accelerometer Data Processing in Low Power Mode.
Please accept solution if my answer is enough for your questions 🙂
Thank you.
... View more