RE: Unable to assign an SPI End Event to a DPPI channel on nRF5340dk

Jørgen Holmefjord — Fri, 22 Jan 2021 17:37:36 GMT

Hi,

I think that the problem is that you have used nrfx_spim_end_event_get(&spi) for the second argument, and not the event itself (NRF_SPIM_EVENT_END). nrfx_spim_end_event_get() will return the address of the event (including the SPIM instance base address), while the nrf_spim_publish_set() expects only the event offset from the base address, the base address of the instance will be added inside this function as well.

Best regards,
Jørgen

RE: Unable to assign an SPI End Event to a DPPI channel on nRF5340dk

Jason Lei — Fri, 22 Jan 2021 05:57:02 GMT

I replaced the nrf_spim_publish_set() code with a direct register operation:

NRF_SPIM4->PUBLISH_END = 0x80000001;

And it worked.

I think there's something wrong with the nrf_spim_publish_set() function.