RE: nrf5340 interrupt speed

Domziy — Tue, 02 Jul 2024 10:41:31 GMT

Thank you for the answer it works as intended. I used the https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/boards/nrf/nrfx as a starting point

RE: nrf5340 interrupt speed

Turbo J — Sat, 22 Jun 2024 19:41:21 GMT

No possible with an interrupt handler function AFAIK.

But the NRF5340 supports DPPI, which you could use to trigger TASKS_START in the SPIM perihperial directly from the GPIOTE peripherial IN event. Then you can either try to re-feed in the EVENTS_STARTED interrupt handler - that is the earlies time you can write the next buffer location into the SPIM registers while a transfer is running. Or you can try using the EasyDMA List feature.

No idea if that was supported in the zephyr SPI driver at all - you will likely need to use registers directly.