when i use the ble_adverting_start(BLE_ADV_MODE_FAST) it return error code : 8https://devzone.nordicsemi.com/f/nordic-q-a/24668/when-i-use-the-ble_adverting_start-ble_adv_mode_fast-it-return-error-code-8when i use the ble_adverting_start(BLE_ADV_MODE_FAST) it return error code : 8 it is from then APP_ERROR_CHECK(err_code) it can system abnormal. the error is from sd_ble_gap_adv_start(), i have use the ble_advertising_init() when it is return error codeen-USTelligent Community 13Mon, 28 Aug 2017 08:41:29 GMTRE: when i use the ble_adverting_start(BLE_ADV_MODE_FAST) it return error code : 8https://devzone.nordicsemi.com/thread/97093?ContentTypeID=1Mon, 28 Aug 2017 08:41:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d6b0ed3d-6caf-4c9d-aefc-b2fbe64f65cfMartinBL<p>@happykelvin: Can edit your question and include your code?</p><div style="clear:both;"></div>RE: when i use the ble_adverting_start(BLE_ADV_MODE_FAST) it return error code : 8https://devzone.nordicsemi.com/thread/97094?ContentTypeID=1Fri, 25 Aug 2017 12:03:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1b27941e-0f25-4f7c-9234-7d6468fe5ed8Bryan H<p>Error codes to be found in <code>components\softdevice\s132\headers\nrf_error.h</code>, value 8 means <code>Invalid state, operation disallowed in this state</code></p> <p>Have you initialized the advertising module with advertising_init()?</p> <p>Also make sure services_init is called before advertising_init.</p> <p>Did you also make sure you stopped advertising before you change the mode?</p><div style="clear:both;"></div>