RE: Timeslot question

Hannibalhz — Fri, 04 Mar 2022 02:16:08 GMT

Dear Priyanka

Thank your for your good advices.I try to add earliest request into NRF_EVT_RADIO_SESSION_IDLE,it's working.However I turn off the keep_running judgment,because it will cause an error.

Thank you for you support.

Best regards.

RE: Timeslot question

Priyanka — Thu, 03 Mar 2022 15:53:43 GMT

Hi,

Could you try to request a new timeslot after it ends, similar to the following:

static bool keep_running = true;
void timeslot_on_sys_evt(uint32_t sys_evt, void * p_context)
{
    uint32_t err_code;
    switch (sys_evt)
    {
        case NRF_EVT_RADIO_SESSION_IDLE:
               // NRF_LOG_INFO("NRF_EVT_RADIO_SESSION_IDLE");
                if (keep_running)
                {
                    err_code = m_request_earliest(NRF_RADIO_PRIORITY_NORMAL);
                    APP_ERROR_CHECK(err_code);
                }
                break;
        case NRF_EVT_RADIO_SESSION_CLOSED:
            NRF_LOG_INFO("NRF_EVT_RADIO_SESSION_CLOSED");
            break;
        case NRF_EVT_RADIO_BLOCKED:
        case NRF_EVT_RADIO_CANCELED: // Fall through.
            if (keep_running)
            {
                err_code = m_request_earliest(NRF_RADIO_PRIORITY_NORMAL);
                APP_ERROR_CHECK(err_code);
            }
            break;
        default:
            NRF_LOG_INFO("timeslot_on_sys_evt: %d\r\n", sys_evt);
            break;
    }
}
void timeslot_on_sys_evt(uint32_t, void *);
/* Define a nrf_sdh_soc event observer to receive SoftDevice system events. */
NRF_SDH_SOC_OBSERVER(m_sys_obs, 0, timeslot_on_sys_evt, NULL);

uint32_t m_request_earliest(enum NRF_RADIO_PRIORITY priority)
{
    timeslot_request.request_type                = NRF_RADIO_REQ_TYPE_EARLIEST;
    timeslot_request.params.earliest.hfclk       = NRF_RADIO_HFCLK_CFG_XTAL_GUARANTEED;
    timeslot_request.params.earliest.priority    = priority;
    timeslot_request.params.earliest.length_us   = TS_LEN_US;
    timeslot_request.params.earliest.timeout_us  = NRF_RADIO_EARLIEST_TIMEOUT_MAX_US;
    return sd_radio_request(&timeslot_request);
}

Regards,

Priyanka