How to enable and use RTC0, RTC1, and RTC2 -- nRF52832

[Sami]

I am currently using nRF52832 with SDK v11.0.0 and S132 v2.0.0. I'd like to enable either RTC2 or RTC0 as a dedicated counter for the keeping track of time (LFCLK). RTC1 is already designated for general purpose timings on LFCLK with prescaler => 0. Is it possible to have all three instances of RTC0/1/2 enabled for time keeping, each with it's own unique respective prescaler value? As mentioned before, I'd like a fully dedicated instance of RTC for keeping track of time where the prescaler value if maxed out at 4095.

[FormerMember]

When using the softdevice, RTC0 is blocked blocked by the softdevice, see this chapter in the softdevice specification. So your application is free to use RTC 1 and RTC 2. It should be possible to have three different instances of the RTC running.

For how to use and declare an instance of the RTC, you can have a look at the rtc example in the SDK.

[FormerMember]

According to the product specification, the current consumption should only marginally increase when using multiple instances of the RTC..

With multiple instances of the RTC, different prescaler values used. To do so, you will have to use the RTC driver. If it is not necessary with different prescaler values, you can use app_timer. In that case, which timer you want to use depends on which one that is the best fit, API wise for example, for your application.