we use the ADXL345 to measure the angle

Hi, Everyone

I have a 3 questions.

1. How do we do a hardware reset or software reset of the ADXL345 at initial state? 2. Does ADXL345 need calibration?
3. What settings are appropriate for the device to be used by humans?
4. If you have any example programs, please let me know.

Best regards,