Is there a provision in the SDK to handle the event NRF_SPIM_EVENT_STARTED?

Question

Because if there is, I'm not seeing it. It seems to me that the SDKv14 has asks you where you want your event handler function like this: 
 APP_ERROR_CHECK(nrf_drv_spi_init(&spi_0, &spi_config_0, spi_0_event_handler, NULL)); 
 Where spi_0_event_handler() is going to be used. 
 And later I have something like this: 
 void spi_0_event_handler(nrf_drv_spi_evt_t const * p_event, void *p_context)
{
 spi_xfer_done = true;
 NRF_LOG_INFO("Transfer completed.");

} 
 
 This works for ENDTX event. But I never said I was interested in ENDTX. What if I wanted NRF_SPIM_EVENT_STARTED ? Is there a way to "register" which events I want to call the event_handler with the SPIM peripheral/driver/api/hal? Or would I have to use PPI to set a SWI?

Edvin · Accepted Answer

Hello, In the SPI example which you refer to in the SDK, the event handler takes in an event which only has one event, ENDTX. spi_event_handler() has only two inputs, one for the data, and one for the event: nrf_drv_spi_evt_t, which holds the variable nrf_drv_spi_evt_type_t, which again only has one event type, NRF_DRV_SPI_EVENT_DONE. I think the easiest way to hook up the NRF_SPIM_EVENT_STARTED would be to use the PPI. Note that NRF_SPIM_EVENT_STARTED = NRF_SPIM0->EVENTS_STARTED (for SPIM0). It would look something like this: void EGU_setup(void) { #define CHANNEL_0 0 NRF_PPI->CH[CHANNEL_0].EEP = NRF_SPIM0->EVENTS_STARTED; NRF_PPI->CH[CHANNEL_0].TEP = NRF_EGU0->TASKS_TRIGGER[0]; NRF_EGU0->INTENSET = EGU_INTENSET_TRIGGERED0_Msk; NVIC_EnableIRQ(SWI0_EGU0_IRQn); NRF_PPI->CHENSET = (1 << CHANNEL_0); } void SWI0_EGU0_IRWHandler(void) { if (NRF_EGU->EVENTS_TRIGGERED[0]) { //This is the timeout handler that triggers after NRF_SPIM0->EVENTS_STARTED NRF_EGU0->EVENTS_TRIGGERED[0] = 0; } } Best regards, Edvin

Is there a provision in the SDK to handle the event NRF_SPIM_EVENT_STARTED?

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