I have a question about calibration mechanism in RTC_C module.
Our mcu is MSP430FR6972 and we would like to implement rtc calibration for crystal offset error.
On user guide there is a sentence like that: "In RTC_C, the offset error calibration takes place over a period of 60 seconds."
In order to achieve calibration; do we need to call calibration function in every 60 seconds? Or if we set the calibration registers, will mcu calibrate rtc automatically?