RE: ESB Timeslot - Softdevice event handler

Edvin — Wed, 18 Sep 2019 13:27:26 GMT

Hello Mikkel,

I suspect what you are seeing is that the nRF goes into system OFF mode when the advertisement times out.

Can you check if that is the case?

Most of our ble_peripheral examples have this function:

static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
    uint32_t err_code;

    switch (ble_adv_evt)
    {
        case BLE_ADV_EVT_FAST:
            err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
            APP_ERROR_CHECK(err_code);
            break;
        case BLE_ADV_EVT_IDLE:
            sleep_mode_enter();
            break;
        default:
            break;
    }
}

Where in the BLE_ADV_EVT_IDLE, which is the event that triggers when the advertisement times out, it will call sleep_mode_enter(); which will basically turn off the nRF, and it will wake up on either a power on reset, or a buttonpress which is configured in sleep_mode_enter() -> bsp_btn_ble_sleep_mode_prepare();

So I suspect that what you are actually seeing is that the chip is simply put in system off mode, which is almost the same as turning it off.

Can you check whether you call sleep_mode_enter() in the BLE_ADV_EVT_IDLE event?

Best regards,

Edvin