Hi,
I'm using the NRF52840 with the nRF5SDK (v16.0).
For my product, I'd like to enter as low-power a sleep as possible, while still being able to wake up on the on board RTC periodically.
From reading, it appears that this is not a case for System OFF (As that cannot be woken up by the internal RTC), but for the System ON sleep, which is essentially the state during a "waiting for event".
During the rest of my code, I use many modules that are no doubt high-power: UART, TWI, I2S.
Is there a generic way to shut all of these down, ensuring that no events will come through, except the RTC one that I will set up after this.
It's fine in fact, if this leaves the libraries in a broken state, as I intend to restart the code upon waking up from the RTC anyway (although if there's a 0-effort way to not do that, I wouldn't).
There seems to be quite a few different Power Management sections to the SDK, but they all appear to deal with System OFF rather than setting up a good environment for a System ON sleep.
Do you have any advice?
