MSPM0G3519: RTC setup and RTC_OUT

Hi Alec,

Alec Fremier said:

s the RTC_OUT GPIO functionality REQUIRED for using the RTC? I thought it was mainly for calibration.

No, RTC_OUT only used for calibration.

Alec Fremier said:

do I need to leave one open and assigned to RTC_OUT to actually use RTC functionality? 

If no crystl offset error calibration need implement, then RTC_OUT can be disabled.

Alec Fremier said:

With respect to calibration, what would the RTC_OUT be typically connected to?

Connect to MCU IO, use high accuracy clock source to capture its period, and then calculate the offset.

You can find the calibration flow in TRM:

Alec Fremier said:

We are attempting to utilize the RTC on the MCU, but are having trouble getting it up and running

Please refer to below example:

https://dev.ti.com/tirex/explore/node?node=A__AAcNuFi6v.kdMO90a4uaLw__MSPM0-SDK__a3PaaoK__LATEST&placeholder=true 

B.R.

Sal