https://devzone.nordicsemi.com/f/nordic-q-a/1395/sd_app_evt_wait-returns-error-code-2I&#39;ve cut the BLE proximity app example code back to doing nothing more than this: int main(void) { uint32_t err_code; leds_init(); for (;;) { power_manage(); } } LED 7 (ASSERT_LED_PIN_NO) is on straight away. Debugging power_manageen-USTelligent Community 13Mon, 20 Jan 2014 10:47:04 GMThttps://devzone.nordicsemi.com/thread/6280?ContentTypeID=1Mon, 20 Jan 2014 10:47:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7590fec4-6f64-4ca8-ace7-7019ac72412dEliot Stock<p>Will do, thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/6279?ContentTypeID=1Mon, 20 Jan 2014 10:45:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2277fa85-a58f-47c3-99db-3af2fe7e1ab5Ole Morten<p>May I suggest taking a look at the SDK applications, and the code you have ripped out? :-) Among them, you&#39;ll find the ble_stack_init() function, which does exactly this.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/6278?ContentTypeID=1Mon, 20 Jan 2014 10:43:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:93c31e74-9875-486c-b547-e8e6525c09c4Eliot Stock<p>Thanks. And how do I enable the soft device?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/6277?ContentTypeID=1Mon, 20 Jan 2014 09:24:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ecda492f-6349-4178-875a-61b55985afccOle Morten<p>You should refer to nrf_error.h for information on the error codes. There, you can see that 0x02 means NRF_ERROR_SOFTDEVICE_NOT_ENABLED.</p> <p>All softdevice function calls (identified by their sd_* prefix) requires the softdevice to be enabled.</p><div style="clear:both;"></div>