sd API for GPREGRET2

[jing]

How to access GPREGRET2 with sd API call?

thanks

jing

[Vidar Berg]

This is an unfortunate miss from our side, the s132 lacks API for setting the GPREGRET2 register. However, it is possible to workaround this by disabling the MWU when you want to access it:

 #define TEST_UNPROTECT_POWER \

NRF_MWU->PREGION[0].SUBS &= ~(MWU_PREGION_SUBS_SR0_Include << MWU_PREGION_SUBS_SR0_Pos)

#define TEST_REPROTECT_POWER \

 NRF_MWU->PREGION[0].SUBS |= (MWU_PREGION_SUBS_SR0_Include << MWU_PREGION_SUBS_SR0_Pos) 

This has already been reported internally.

[Vidar Berg]

From s132 v.3.0.0 it is possible to use the sd_power_gpregret_ APIs to access the GREPRET2 register.

Do you get a hardfault when you run the code above?