How to reinit UARTE0 by use *(volatile uint32_t *)0x40002FFC = 1 for power save

[xjx]

I use this code below mentioned in  this question https://devzone.nordicsemi.com/f/nordic-q-a/26030/how-to-reach-nrf52840-uarte-current-supply-specification

 

*(volatile uint32_t *)0x40002FFC = 0;
*(volatile uint32_t *)0x40002FFC;
*(volatile uint32_t *)0x40002FFC = 1;

This can reduce UARTE0 current consumption. But I can't reinit UARTE0. what should I do?

the nrf52840 datasheet not mention this register 0x40002FFC, does any one know how to use this?

[xjx]

the essue of can't reinit uarte0 is not caused by the code. sorry ths