What's the diffrence between nrf_power_gpregret_set and sd_power_gpregret_set?

[cpeng]

Hi Devzone:

I saw two functions to write the retention register for DFU, nrf_power_gpregret_set and sd_power_gpregret_set.

What's the diffrence between 

nrf_power_gpregret_set

and

sd_power_gpregret_set

?

Thanks.

[WestCoastDaz]

cpeng,

Functions prefixed with sd_ are function used to interface with the SoftDevice or peripherals that are managed by the SoftDevice.  A good rule of thumb is if you are using the SoftDevice then you should use the sd_ functions.