DPPI not working properly in nRF54L15

LeeRJ over 1 year ago

#include <zephyr/kernel.h>

#include <hal/nrf_radio.h>

#include <nrfx_dppi.h>

int main(void)

{

printk("DPPI test start\n");

/* init RADIO */

NRF_RADIO->TXPOWER = 4;

NRF_RADIO->FREQUENCY = 0;

NRF_RADIO->MODE = 1;

/* READY event trigger EDSTART task */

#if 0

nrf_radio_shorts_enable(NRF_RADIO, NRF_RADIO_SHORT_READY_EDSTART_MASK);

#else

nrf_radio_publish_set(NRF_RADIO, NRF_RADIO_EVENT_READY, 0);

nrf_radio_subscribe_set(NRF_RADIO, NRF_RADIO_TASK_EDSTART, 0);

nrf_dppi_channels_enable(NRF_DPPIC10, 0);

#endif

/* start ED */

NRF_RADIO->TASKS_RXEN = 1;

/* wait ED end */

while (NRF_RADIO->EVENTS_EDEND == 0)

{

}

/* dump ED value */

printk("ED = %d\n", NRF_RADIO->EDSAMPLE);

return 0;

}

/**************************************************************************************/

If use SHORT it works fine.

0 Sigurd over 1 year ago

Hi!

Try using nrfx_dppi_channel_alloc() for the DPPI channel, instead of simply jusing 0 as the channel.

Snippet:

static uint8_t ready_phy_end_egu;


err = nrfx_dppi_channel_alloc(&ready_phy_end_egu);
if (err != NRFX_SUCCESS) {
	goto error;
}


nrf_dppi_channels_enable(ESB_DPPIC, BIT(ready_phy_end_egu));