RE: Optimizing consumption on nRF52 running TWI

user108031 — Wed, 15 Jun 2022 13:26:36 GMT

Thanks Simon, I was hoping that there was some king of DMA that didn't need the core powered while performing the transaction it self.

But nevertheless, thanks for the support.

Cheers,

Jorge

RE: Optimizing consumption on nRF52 running TWI

user75734 — Tue, 07 Jun 2022 12:05:34 GMT

Hi Jorge

1. I don't see how this would make much sense, as the nrf_twi_mngr_schedule() call will start a new transaction if currently idle, so if it is idle it would immediately just start the TWI transaction. Then, when it is done, it would make sense to call the sd_app_evt_wait() function after the TWI transaction is completed.

2. The device should indeed go to low power mode after the TWI transaction. But you need to wait for it to finish successfully before calling the sd_app_evt_wait().

3. The device will/should be awake for the TWI transaction, and only go to sleep inbetween, when the device doesn't have anything to do (is idle).

Best regards,

Simon