app beacon example error

Question

Hi, 
 I'm trying to set up the connectable/scannable advertising. I took the app_beacon example and changed advertising parameters. 
 My final set up is: 
 #define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */

#define NON_CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(100, UNIT_0_625_MS) /**< The advertising interval for non-connectable advertisement (100 ms). This value can vary between 100ms to 10.24s). */

#define APP_BEACON_INFO_LENGTH 0x0D /**< Total length of information advertised by the Beacon. */
#define APP_ADV_DATA_LENGTH 0x0B /**< Length of manufacturer specific data in the advertisement. */
#define APP_DEVICE_TYPE 0x02 /**< 0x02 refers to Beacon. */
#define APP_MEASURED_RSSI 0xC3 /**< The Beacon's measured RSSI at 1 meter distance in dBm. */
#define APP_COMPANY_IDENTIFIER 0x0059 /**< Company identifier for Nordic Semiconductor ASA. as per www.bluetooth.org. */
#define APP_MAJOR_VALUE 0x01, 0x02 /**< Major value used to identify Beacons. */
#define APP_MINOR_VALUE 0x03, 0x04 /**< Minor value used to identify Beacons. */
#define APP_BEACON_UUID 0x01, 0x12, 0x23, 0x34, \
 0x45, 0x56, 0x67, 0x78, \
 0x89, 0x9a, 0xab

#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */

#if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
#define MAJ_VAL_OFFSET_IN_BEACON_INFO 18 /**< Position of the MSB of the Major Value in m_beacon_info array. */
#define UICR_ADDRESS 0x10001080 /**< Address of the UICR register used by this example. The major and minor versions to be encoded into the advertising data will be picked up from this location. */
#endif

static ble_gap_adv_params_t m_adv_params; /**< Parameters to be passed to the stack when starting advertising. */


/*
static uint8_t m_beacon_info[APP_BEACON_INFO_LENGTH] = 
{
 APP_DEVICE_TYPE, // Manufacturer specific information. Specifies the device type in this
 // implementation.
 APP_ADV_DATA_LENGTH, // Manufacturer specific information. Specifies the length of the
 // manufacturer specific data in this implementation.
 APP_BEACON_UUID, // 128 bit UUID value.
 APP_MAJOR_VALUE, // Major arbitrary value that can be used to distinguish between Beacons.
 APP_MINOR_VALUE, // Minor arbitrary value that can be used to distinguish between Beacons.
 APP_MEASURED_RSSI // Manufacturer specific information. The Beacon's measured TX power in
 // this implementation.
};
*/

static uint8_t m_beacon_info[APP_BEACON_INFO_LENGTH] = 
{
 APP_DEVICE_TYPE, // Manufacturer specific information. Specifies the device type in this
 // implementation.
 APP_ADV_DATA_LENGTH, // Manufacturer specific information. Specifies the length of the
 // manufacturer specific data in this implementation.
 APP_BEACON_UUID
};


/**@brief Callback function for asserts in the SoftDevice.
 *
 * @details This function will be called in case of an assert in the SoftDevice.
 *
 * @warning This handler is an example only and does not fit a final product. You need to analyze
 * how your product is supposed to react in case of Assert.
 * @warning On assert from the SoftDevice, the system can only recover on reset.
 *
 * @param[in] line_num Line number of the failing ASSERT call.
 * @param[in] file_name File name of the failing ASSERT call.
 */
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
 app_error_handler(DEAD_BEEF, line_num, p_file_name);
}


static void rename_device(const char *device_name)
{
	uint32_t err_code;
	ble_gap_conn_sec_mode_t sec_mode;

 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);

	err_code = sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)device_name, strlen(device_name));

	APP_ERROR_CHECK(err_code);

}

/**@brief Function for initializing the Advertising functionality.
 *
 * @details Encodes the required advertising data and passes it to the stack.
 * Also builds a structure to be passed to the stack when starting advertising.
 */
static void advertising_init(void)
{
 uint32_t err_code;
 ble_advdata_t advdata;
 uint8_t flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;//BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;

 ble_advdata_manuf_data_t manuf_specific_data;

 manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;

 manuf_specific_data.data.p_data = (uint8_t *) m_beacon_info;
 manuf_specific_data.data.size = APP_BEACON_INFO_LENGTH;

	char device_name[10] = "device 33";
	rename_device(device_name);

 // Build and set advertising data.
 memset(&advdata, 0, sizeof(advdata));

 advdata.name_type = BLE_ADVDATA_FULL_NAME;
 advdata.flags = flags;
	advdata.include_appearance = false;
 advdata.p_manuf_specific_data = &manuf_specific_data;

	//print_device_name_info();

 err_code = ble_advdata_set(&advdata, NULL);
 APP_ERROR_CHECK(err_code);

 // Initialize advertising parameters (used when starting advertising).
	// kompletni nastaveni parametru
 memset(&m_adv_params, 0, sizeof(m_adv_params));

 m_adv_params.type = BLE_GAP_ADV_TYPE_ADV_IND; //BLE_GAP_ADV_TYPE_ADV_NONCONN_IND;
 m_adv_params.p_peer_addr = NULL; // Undirected advertisement.
 m_adv_params.fp = BLE_GAP_ADV_FP_ANY; // urcuje zda bude filtrovat scan/connect request pomoci white listu
 m_adv_params.interval = ADV_INTERVAL;//NON_CONNECTABLE_ADV_INTERVAL;
 m_adv_params.timeout = 0; // Never time out.
	// m_adv_params.channel_mask ... urcuje na kterem kanalu nebude vysilat advertising packety
}

/**@brief Function for starting advertising.
 */
static void advertising_start(void)
{
 ret_code_t err_code;
 err_code = sd_ble_gap_adv_start(&m_adv_params, APP_BLE_CONN_CFG_TAG);
 APP_ERROR_CHECK(err_code);

 err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
 APP_ERROR_CHECK(err_code);
}
 
 The ADV_INTERVAl is defined as: 
 #ifndef ADV_INTERVAL
#define ADV_INTERVAL 300
#endif 
 After running the app will throw the error: <error> app: ERROR 18 [Unknown error code] 
 I looked to another examples which have similar set up as mine example so I would not expect any error. 
 If I set m_adv_params.type = BLE_GAP_ADV_TYPE_ADV_NONCONN_IND (deafult setting of the example) 
 then everything is OK and I can catch sent packet via wireshark. 
 
 Did I miss something? For example some, GATT settings? 
 Thank you for help!

Jørgen Holmefjord · Accepted Answer

Error code 18 means NRF_ERROR_CONN_COUNT . Please make sure you are setting the allowed number of connections higher than 0. You should also try debugging your application to see which function is returning the error, and check the API documentation for clues on how to solve this. 
 Yes, if you set active scanning, the scan request should be generated to all scannable advertisements . You can check if the received packets are scan response packets in the parameter scan_rsp in ble_gap_adv_params_t struct.

app beacon example error

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