How to stop the random number generator ?

[ToTo]

Hi,

In my app , using SD130 , when i check the registers state while debuging i find that the RNB is powered on.

1. Do the SD130 power it on automatically? (because i didn't activate it !!! i don't even know how)
2. Is it mandatory to activate it ? because i'm trying to save current as possible as i can.
3. How can i put it off ? using the suitable softdevice API. ? because i used NRF_RNG->POWER = 0; before activating the Softdevice, but the RNG keeps working ..

[RK]

You can't turn it off - it's a restricted peripheral in the softdevice (check the softdevice spec) which means the softdevice uses it and needs it, several pieces of bluetooth require random numbers.

I'm sure the softdevice runs it only when it needs a random number, so its powered-on state is basically irrelevant.

[ToTo]

Ok thanks,, yeah, the same thing said in a comment in this thread :)