Extended Advertisement with Scan Response

[Vance J Farren]

Target: nrf52 dev kit

Soft device: s132_nrf52_7.2.0_softdevice.hex

SDK: nrf5 sdk 17.1.0

Environment: IAR

Example modified: ble_app_rscs

I am trying to modify the example to support extended advertisement with scan response.  In the following example init function if I set ble_adv_extended_enabled to false it will allow the advertising and scan response data sets.  If I set ble_adv_extended_enabled to true and remove the initialization of the scan response encoding, that will also run.

Please advise on the configuration to allow extended advertisement with scan response.

Thanks

/**@brief Function for initializing the Advertising functionality.
 */
static void advertising_init(void)
{
    ret_code_t             err_code;
    ble_advertising_init_t init;
    
#define ADV_SIZE 60
//#define SR_SIZE 20
    
    ble_advdata_manuf_data_t 		  adv_manuf_data_config;
    uint8_t 		                  adv_manuf_data_data[ADV_SIZE] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,
                                                                          0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,
                                                                          0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF};
    adv_manuf_data_config.data.size       = ADV_SIZE;
//    
//    ble_advdata_manuf_data_t 		  adv_manuf_data_sr_config;
//    uint8_t 		                  adv_manuf_data_sr_data[SR_SIZE] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF};
//    adv_manuf_data_config.data.size       = SR_SIZE;

    memset(&init, 0, sizeof(init));
    //---
    init.advdata.name_type               = BLE_ADVDATA_FULL_NAME;
//    init.srdata.name_type = BLE_ADVDATA_NO_NAME;
    init.advdata.include_appearance      = true;
    init.advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
    init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.advdata.uuids_complete.p_uuids  = m_adv_uuids;

    init.config.ble_adv_fast_enabled     = true;
    init.config.ble_adv_fast_interval    = APP_ADV_INTERVAL;
    init.config.ble_adv_fast_timeout     = APP_ADV_DURATION;

    init.config.ble_adv_primary_phy      = BLE_GAP_PHY_1MBPS;
    init.config.ble_adv_secondary_phy    = BLE_GAP_PHY_2MBPS;
    init.config.ble_adv_extended_enabled = true;
    //-----
//    adv_manuf_data_sr_config.data.p_data        = adv_manuf_data_sr_data;
//    adv_manuf_data_sr_config.data.size          = sizeof(adv_manuf_data_sr_data);
//    
    adv_manuf_data_config.data.p_data        = adv_manuf_data_data;
    adv_manuf_data_config.data.size          = sizeof(adv_manuf_data_data);
//    
    init.advdata.p_manuf_specific_data     = &adv_manuf_data_config;
//    init.srdata.p_manuf_specific_data      = &adv_manuf_data_sr_config;
    
    m_advertising.adv_params.properties.type = BLE_GAP_ADV_TYPE_EXTENDED_NONCONNECTABLE_SCANNABLE_UNDIRECTED;//BLE_GAP_ADV_TYPE_NONCONNECTABLE_SCANNABLE_UNDIRECTED
    m_advertising.adv_params.interval = APP_ADV_INTERVAL;
    m_advertising.adv_params.duration = APP_ADV_DURATION;
//
//    m_advertising.adv_params.p_peer_addr     = NULL;
//    m_advertising.adv_params.duration        = BLE_GAP_ADV_TIMEOUT_GENERAL_UNLIMITED;
//    m_advertising.adv_params.interval      = 0x40;
//    m_advertising.adv_params.primary_phy   = BLE_GAP_PHY_AUTO;
//    m_advertising.adv_params.secondary_phy   = BLE_GAP_PHY_AUTO;
//    m_advertising.adv_params.set_id         = 4;
//    m_advertising.adv_params.filter_policy = BLE_GAP_ADV_FP_ANY;
    
     // Prepare the scan response manufacturer specific data packet
    ble_advdata_manuf_data_t  manuf_data_response;
    uint8_t                     data_response[4] = {0xDE,0xAD};
    manuf_data_response.data.p_data         = data_response;
    manuf_data_response.data.size           = sizeof(data_response);
    init.srdata.name_type = BLE_ADVDATA_NO_NAME;
    init.srdata.p_manuf_specific_data = &manuf_data_response;
    
    //----

    init.evt_handler = on_adv_evt;

    err_code = ble_advertising_init(&m_advertising, &init);
    APP_ERROR_CHECK(err_code);

    ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}

[Einar Thorsrud]

Hi,

As you get NRF_ERROR_INVALID_PARAM returned from ble_advertising_start() that means that there is a problem with the input parameters to that function call. I do not see enough of your code to say what the problem is though, but that is what you need to look into.

[Vance J Farren]

Fullscreen 07873.main.c Download

/**
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 *
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 *    contributors may be used to endorse or promote products derived from this
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/** @file
 *
 * @defgroup ble_sdk_app_rsc_main main.c
 * @{
 * @ingroup ble_sdk_app_rsc
 * @brief Running Speed and Cadence Service Sample Application main file.
 *
 * This file contains the source code for a sample application using the Running Speed and Cadence service.
 * It also includes the sample code for Battery and Device Information services.
 * This application uses the @ref srvlib_conn_params module.
 */
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "app_error.h"
#include "ble.h"
#include "ble_err.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_bas.h"
#include "ble_rscs.h"
#include "ble_dis.h"
#include "ble_conn_params.h"
#include "sensorsim.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "app_timer.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "bsp_btn_ble.h"
#include "fds.h"
#include "ble_conn_state.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "nrf_pwr_mgmt.h"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"


//#define APP_ADV_INTERVAL                320                       /**< The advertising interval (in units of 0.625 ms. This value corresponds to 150 ms). */
//#define APP_ADV_DURATION_UNLIMITED      0                                           /**< Unlimited period .*/
//#define APP_ADV_DURATION                2000                         /**< The advertising duration (60 seconds) in units of 10 milliseconds. */
//#define APP_SLOW_ADV_INTERVAL           2400                  /**< The advertising interval (in units of 0.625 ms. This value corresponds to 2000 ms). */
//#define APP_SLOW_ADV_DURATION           2000


#define DEVICE_NAME                     "nRF" /**< Name of device. Will be included in the advertising data. */

#define APP_ADV_INTERVAL                40                                      /**< The advertising interval (in units of 0.625 ms. This value corresponds to 25 ms). */

#define APP_ADV_DURATION                18000                                  /**< The advertising duration (180 seconds) in units of 10 milliseconds. */

#define APP_BLE_OBSERVER_PRIO           3                                       /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_BLE_CONN_CFG_TAG            1                                       /**< A tag identifying the SoftDevice BLE configuration. */

#define BATTERY_LEVEL_MEAS_INTERVAL     APP_TIMER_TICKS(2000)                   /**< Battery level measurement interval (ticks). */
#define MIN_BATTERY_LEVEL               81                                      /**< Minimum battery level as returned by the simulated measurement function. */
#define MAX_BATTERY_LEVEL               100                                     /**< Maximum battery level as returned by the simulated measurement function. */
#define BATTERY_LEVEL_INCREMENT         1                                       /**< Value by which the battery level is incremented/decremented for each call to the simulated measurement function. */

#define SPEED_AND_CADENCE_MEAS_INTERVAL 1000                                    /**< Speed and cadence measurement interval (milliseconds). */

#define MIN_SPEED_MPS                   0.5                                     /**< Minimum speed in meters per second for use in the simulated measurement function. */
#define MAX_SPEED_MPS                   6.5                                     /**< Maximum speed in meters per second for use in the simulated measurement function. */
#define SPEED_MPS_INCREMENT             1.5                                     /**< Value by which speed is incremented/decremented for each call to the simulated measurement function. */
#define MIN_RUNNING_SPEED               3                                       /**< speed threshold to set the running bit. */

#define MIN_CADENCE_RPM                 40                                      /**< Minimum cadence in revolutions per minute for use in the simulated measurement function. */
#define MAX_CADENCE_RPM                 160                                     /**< Maximum cadence in revolutions per minute for use in the simulated measurement function. */
#define CADENCE_RPM_INCREMENT           20                                      /**< Value by which cadence is incremented/decremented in the simulated measurement function. */

#define MIN_STRIDE_LENGTH               20                                      /**< Minimum stride length in decimeter for use in the simulated measurement function. */
#define MAX_STRIDE_LENGTH               125                                     /**< Maximum stride length in decimeter for use in the simulated measurement function. */
#define STRIDE_LENGTH_INCREMENT         5                                       /**< Value by which stride length is incremented/decremented in the simulated measurement function. */

#define MIN_CONN_INTERVAL               MSEC_TO_UNITS(500, UNIT_1_25_MS)        /**< Minimum acceptable connection interval (0.5 seconds). */
#define MAX_CONN_INTERVAL               MSEC_TO_UNITS(1000, UNIT_1_25_MS)       /**< Maximum acceptable connection interval (1 second). */
#define SLAVE_LATENCY                   0                                       /**< Slave latency. */
#define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(4000, UNIT_10_MS)         /**< Connection supervisory timeout (4 seconds). */

#define FIRST_CONN_PARAMS_UPDATE_DELAY  APP_TIMER_TICKS(5000)                   /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY   APP_TIMER_TICKS(30000)                  /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT    3                                       /**< Number of attempts before giving up the connection parameter negotiation. */

#define SEC_PARAM_BOND                  1                                       /**< Perform bonding. */
#define SEC_PARAM_MITM                  0                                       /**< Man In The Middle protection not required. */
#define SEC_PARAM_LESC                  0                                       /**< LE Secure Connections not enabled. */
#define SEC_PARAM_KEYPRESS              0                                       /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES       BLE_GAP_IO_CAPS_NONE                    /**< No I/O capabilities. */
#define SEC_PARAM_OOB                   0                                       /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE          7                                       /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE          16                                      /**< Maximum encryption key size. */

#define DEAD_BEEF                       0xDEADBEEF                              /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */

#define APP_FEATURE_NOT_SUPPORTED       BLE_GATT_STATUS_ATTERR_APP_BEGIN + 2    /**< Reply when unsupported features are requested. */

#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). */


/**
 * @defgroup ble_dis_config Configuration for Device Information Service.
 * @brief Example characteristic values used for Device Information Service. Will be passed to Device Information Service.
 * @{
 */
#define BLE_DIS_MANUFACTURER_NAME       "NordicSemiconductor"                   /**< Manufacturer Name String. */
#define BLE_DIS_MODEL_NUMBER            "NRF5X"                                 /**< Model Number String. */
#define BLE_DIS_SERIAL_NUMBER           "T0139836"                              /**< Serial Number String. */
#define BLE_DIS_HW_REVISION             "2016.42"                               /**< Hardware Revision String. */
#define BLE_DIS_FW_REVISION             "0.1.2"                                 /**< Firmware Revision String. */
#define BLE_DIS_SW_REVISION             "1.2.3"                                 /**< Software Revision String. */
#define BLE_DIS_MANUFACTURER_ID         0x0000000059                            /**< Manufacturer ID for System ID. */
#define BLE_DIS_OU_ID                   0x123456                                /**< Organizationally unique ID for System ID. */
#define BLE_DIS_CERT_LIST               {0x00, 0x01, 0x02, 0x03}                /**< IEEE 11073-20601 Regulatory Certification Data List. */
#define BLE_DIS_VENDOR_ID               0x0059                                  /**< Vendor ID for PnP ID. */
#define BLE_DIS_PRODUCT_ID              0x0001                                  /**< Product ID for PnP ID. */
#define BLE_DIS_PRODUCT_VERSION         0x0002                                  /**< Product Version for PnP ID. */
/** @} */

APP_TIMER_DEF(m_battery_timer_id);                                              /**< Battery timer. */
APP_TIMER_DEF(m_rsc_meas_timer_id);                                             /**< RSC measurement timer. */
BLE_BAS_DEF(m_bas);                                                             /**< Structure used to identify the battery service. */
BLE_RSCS_DEF(m_rscs);                                                           /**< Structure used to identify the running speed and cadence service. */
NRF_BLE_GATT_DEF(m_gatt);                                                       /**< GATT module instance. */
BLE_ADVERTISING_DEF(m_advertising);                                             /**< Advertising module instance. */
NRF_BLE_QWR_DEF(m_qwr);                                                         /**< Context for the Queued Write module.*/

static uint16_t          m_conn_handle = BLE_CONN_HANDLE_INVALID;               /**< Handle of the current connection. */

static sensorsim_cfg_t   m_battery_sim_cfg;                                     /**< Battery Level sensor simulator configuration. */
static sensorsim_state_t m_battery_sim_state;                                   /**< Battery Level sensor simulator state. */

static sensorsim_cfg_t   m_speed_mps_sim_cfg;                                   /**< Speed simulator configuration. */
static sensorsim_state_t m_speed_mps_sim_state;                                 /**< Speed simulator state. */
static sensorsim_cfg_t   m_cadence_rpm_sim_cfg;                                 /**< Cadence simulator configuration. */
static sensorsim_state_t m_cadence_rpm_sim_state;                               /**< Cadence simulator state. */
static sensorsim_cfg_t   m_cadence_stl_sim_cfg;                                 /**< stride length simulator configuration. */
static sensorsim_state_t m_cadence_stl_sim_state;                               /**< stride length simulator state. */

static ble_uuid_t m_adv_uuids[] =                                               /**< Universally unique service identifiers. */
{
    {BLE_UUID_RUNNING_SPEED_AND_CADENCE,    BLE_UUID_TYPE_BLE},
    {BLE_UUID_BATTERY_SERVICE,              BLE_UUID_TYPE_BLE},
    {BLE_UUID_DEVICE_INFORMATION_SERVICE,   BLE_UUID_TYPE_BLE}
};


static void advertising_start(bool erase_bonds);


/**@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);
}


/**@brief Function for handling Peer Manager events.
 *
 * @param[in] p_evt  Peer Manager event.
 */
static void pm_evt_handler(pm_evt_t const * p_evt)
{
    pm_handler_on_pm_evt(p_evt);
    pm_handler_disconnect_on_sec_failure(p_evt);
    pm_handler_flash_clean(p_evt);

    switch (p_evt->evt_id)
    {
        case PM_EVT_PEERS_DELETE_SUCCEEDED:
            advertising_start(false);
            break;

        default:
            break;
    }
}



/**@brief Function for performing battery measurement and updating the Battery Level characteristic
 *        in Battery Service.
 */
static void battery_level_update(void)
{
    ret_code_t err_code;
    uint8_t  battery_level;

    battery_level = (uint8_t)sensorsim_measure(&m_battery_sim_state, &m_battery_sim_cfg);

    err_code = ble_bas_battery_level_update(&m_bas, battery_level, BLE_CONN_HANDLE_ALL);
    if ((err_code != NRF_SUCCESS) &&
        (err_code != NRF_ERROR_INVALID_STATE) &&
        (err_code != NRF_ERROR_RESOURCES) &&
        (err_code != NRF_ERROR_BUSY) &&
        (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
       )
    {
        APP_ERROR_HANDLER(err_code);
    }
}


/**@brief Function for handling the Battery measurement timer timeout.
 *
 * @details This function will be called each time the battery level measurement timer expires.
 *
 * @param[in]   p_context   Pointer used for passing some arbitrary information (context) from the
 *                          app_start_timer() call to the timeout handler.
 */
static void battery_level_meas_timeout_handler(void * p_context)
{
    UNUSED_PARAMETER(p_context);
    battery_level_update();
}


/**@brief Function for populating simulated running speed and cadence measurement.
 */
static void rsc_sim_measurement(ble_rscs_meas_t * p_measurement)
{
    p_measurement->is_inst_stride_len_present = true;
    p_measurement->is_total_distance_present  = false;
    p_measurement->is_running                 = false;

    p_measurement->inst_speed = sensorsim_measure(&m_speed_mps_sim_state,
                                                  &m_speed_mps_sim_cfg);

    p_measurement->inst_cadence = sensorsim_measure(&m_cadence_rpm_sim_state,
                                                    &m_cadence_rpm_sim_cfg);

    p_measurement->inst_stride_length = sensorsim_measure(&m_cadence_stl_sim_state,
                                                          &m_cadence_stl_sim_cfg);

    if (p_measurement->inst_speed > (uint32_t)(MIN_RUNNING_SPEED * 256))
    {
        p_measurement->is_running = true;
    }
}


/**@brief Function for handling the Running Speed and Cadence measurement timer timeout.
 *
 * @details This function will be called each time the running speed and cadence
 *          measurement timer expires.
 *
 * @param[in]   p_context   Pointer used for passing some arbitrary information (context) from the
 *                          app_start_timer() call to the timeout handler.
 */
static void rsc_meas_timeout_handler(void * p_context)
{
    ret_code_t      err_code;
    ble_rscs_meas_t rscs_measurement;

    UNUSED_PARAMETER(p_context);

    rsc_sim_measurement(&rscs_measurement);

    err_code = ble_rscs_measurement_send(&m_rscs, &rscs_measurement);
    if ((err_code != NRF_SUCCESS) &&
        (err_code != NRF_ERROR_INVALID_STATE) &&
        (err_code != NRF_ERROR_RESOURCES) &&
        (err_code != NRF_ERROR_BUSY) &&
        (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
       )
    {
        APP_ERROR_HANDLER(err_code);
    }
}


/**@brief Function for the Timer initialization.
 *
 * @details Initializes the timer module. This creates and starts application timers.
 */
static void timers_init(void)
{
    ret_code_t err_code;

    // Initialize timer module.
    err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);

    // Create timers.
    err_code = app_timer_create(&m_battery_timer_id,
                                APP_TIMER_MODE_REPEATED,
                                battery_level_meas_timeout_handler);
    APP_ERROR_CHECK(err_code);

    // Create battery timer.
    err_code = app_timer_create(&m_rsc_meas_timer_id,
                                APP_TIMER_MODE_REPEATED,
                                rsc_meas_timeout_handler);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for the GAP initialization.
 *
 * @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the
 *          device including the device name, appearance, and the preferred connection parameters.
 */
static void gap_params_init(void)
{
    ret_code_t              err_code;
    ble_gap_conn_params_t   gap_conn_params;
    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);

    err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_GENERIC_RUNNING_WALKING_SENSOR);
    APP_ERROR_CHECK(err_code);

    memset(&gap_conn_params, 0, sizeof(gap_conn_params));

    gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
    gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
    gap_conn_params.slave_latency     = SLAVE_LATENCY;
    gap_conn_params.conn_sup_timeout  = CONN_SUP_TIMEOUT;

    err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing the GATT module.
 */
static void gatt_init(void)
{
    ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling Queued Write Module errors.
 *
 * @details A pointer to this function will be passed to each service which may need to inform the
 *          application about an error.
 *
 * @param[in]   nrf_error   Error code containing information about what went wrong.
 */
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
    APP_ERROR_HANDLER(nrf_error);
}


/**@brief Function for initializing services that will be used by the application.
 *
 * @details Initialize the Running Speed and Cadence, Battery and Device Information services.
 */
static void services_init(void)
{
    ret_code_t         err_code;
    ble_rscs_init_t    rscs_init;
    ble_bas_init_t     bas_init;
    ble_dis_init_t     dis_init;
    nrf_ble_qwr_init_t qwr_init = {0};

    // Initialize Queued Write Module
    qwr_init.error_handler    = nrf_qwr_error_handler;
    err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
    APP_ERROR_CHECK(err_code);

    // Initialize Running Speed and Cadence Service
    memset(&rscs_init, 0, sizeof(rscs_init));

    rscs_init.evt_handler = NULL;
    rscs_init.feature     = BLE_RSCS_FEATURE_INSTANT_STRIDE_LEN_BIT |
                            BLE_RSCS_FEATURE_WALKING_OR_RUNNING_STATUS_BIT;

    rscs_init.initial_rcm.is_inst_stride_len_present = true;
    rscs_init.initial_rcm.is_total_distance_present  = false;
    rscs_init.initial_rcm.is_running                 = false;
    rscs_init.initial_rcm.inst_stride_length         = 0;

    // Here the sec level for the Running Speed and Cadence Service can be changed/increased.
    rscs_init.rsc_feature_rd_sec   = SEC_OPEN;
    rscs_init.rsc_meas_cccd_wr_sec = SEC_OPEN;

    err_code = ble_rscs_init(&m_rscs, &rscs_init);
    APP_ERROR_CHECK(err_code);

    // Initialize Battery Service.
    memset(&bas_init, 0, sizeof(bas_init));

    // Here the sec level for the Battery Service can be changed/increased.
    bas_init.bl_rd_sec        = SEC_OPEN;
    bas_init.bl_cccd_wr_sec   = SEC_OPEN;
    bas_init.bl_report_rd_sec = SEC_OPEN;

    bas_init.evt_handler          = NULL;
    bas_init.support_notification = true;
    bas_init.p_report_ref         = NULL;
    bas_init.initial_batt_level   = 100;

    err_code = ble_bas_init(&m_bas, &bas_init);
    APP_ERROR_CHECK(err_code);

    // Initialize Device Information Service.
    ble_dis_sys_id_t             sys_id;
    ble_dis_pnp_id_t             pnp_id;
    ble_dis_reg_cert_data_list_t cert_list;
    uint8_t                      cert_list_data[] = BLE_DIS_CERT_LIST;

    memset(&dis_init, 0, sizeof(dis_init));

    ble_srv_ascii_to_utf8(&dis_init.manufact_name_str, BLE_DIS_MANUFACTURER_NAME);
    ble_srv_ascii_to_utf8(&dis_init.model_num_str, BLE_DIS_MODEL_NUMBER);
    ble_srv_ascii_to_utf8(&dis_init.serial_num_str, BLE_DIS_SERIAL_NUMBER);
    ble_srv_ascii_to_utf8(&dis_init.hw_rev_str, BLE_DIS_HW_REVISION);
    ble_srv_ascii_to_utf8(&dis_init.fw_rev_str, BLE_DIS_FW_REVISION);
    ble_srv_ascii_to_utf8(&dis_init.sw_rev_str, BLE_DIS_SW_REVISION);

    sys_id.manufacturer_id            = BLE_DIS_MANUFACTURER_ID;
    sys_id.organizationally_unique_id = BLE_DIS_OU_ID;

    cert_list.p_list   = cert_list_data;
    cert_list.list_len = sizeof(cert_list_data);

    pnp_id.vendor_id_source = BLE_DIS_VENDOR_ID_SRC_BLUETOOTH_SIG;
    pnp_id.vendor_id        = BLE_DIS_VENDOR_ID;
    pnp_id.product_id       = BLE_DIS_PRODUCT_ID;
    pnp_id.product_version  = BLE_DIS_PRODUCT_VERSION;

    dis_init.p_sys_id             = &sys_id;
    dis_init.p_reg_cert_data_list = &cert_list;
    dis_init.p_pnp_id             = &pnp_id;

    dis_init.dis_char_rd_sec = SEC_OPEN;

    err_code = ble_dis_init(&dis_init);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing the sensor simulators.
 */
static void sensor_simulator_init(void)
{
    m_battery_sim_cfg.min          = MIN_BATTERY_LEVEL;
    m_battery_sim_cfg.max          = MAX_BATTERY_LEVEL;
    m_battery_sim_cfg.incr         = BATTERY_LEVEL_INCREMENT;
    m_battery_sim_cfg.start_at_max = true;

    sensorsim_init(&m_battery_sim_state, &m_battery_sim_cfg);

    // speed is in units of meters per second divided by 256
    m_speed_mps_sim_cfg.min          = (uint32_t)(MIN_SPEED_MPS * 256);
    m_speed_mps_sim_cfg.max          = (uint32_t)(MAX_SPEED_MPS * 256);
    m_speed_mps_sim_cfg.incr         = (uint32_t)(SPEED_MPS_INCREMENT * 256);
    m_speed_mps_sim_cfg.start_at_max = false;

    sensorsim_init(&m_speed_mps_sim_state, &m_speed_mps_sim_cfg);

    m_cadence_rpm_sim_cfg.min          = MIN_CADENCE_RPM;
    m_cadence_rpm_sim_cfg.max          = MAX_CADENCE_RPM;
    m_cadence_rpm_sim_cfg.incr         = CADENCE_RPM_INCREMENT;
    m_cadence_rpm_sim_cfg.start_at_max = false;

    sensorsim_init(&m_cadence_rpm_sim_state, &m_cadence_rpm_sim_cfg);

    m_cadence_stl_sim_cfg.min          = MIN_STRIDE_LENGTH;
    m_cadence_stl_sim_cfg.max          = MAX_STRIDE_LENGTH;
    m_cadence_stl_sim_cfg.incr         = STRIDE_LENGTH_INCREMENT;
    m_cadence_stl_sim_cfg.start_at_max = false;

    sensorsim_init(&m_cadence_stl_sim_state, &m_cadence_stl_sim_cfg);
}


/**@brief Function for starting application timers.
 */
static void application_timers_start(void)
{
    ret_code_t err_code;
    uint32_t rsc_meas_timer_ticks;

    // Start application timers.
    err_code = app_timer_start(m_battery_timer_id, BATTERY_LEVEL_MEAS_INTERVAL, NULL);
    APP_ERROR_CHECK(err_code);

    rsc_meas_timer_ticks = APP_TIMER_TICKS(SPEED_AND_CADENCE_MEAS_INTERVAL);

    err_code = app_timer_start(m_rsc_meas_timer_id, rsc_meas_timer_ticks, NULL);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling the Connection Parameters Module.
 *
 * @details This function will be called for all events in the Connection Parameters Module which
 *          are passed to the application.
 *          @note All this function does is to disconnect. This could have been done by simply
 *                setting the disconnect_on_fail config parameter, but instead we use the event
 *                handler mechanism to demonstrate its use.
 *
 * @param[in]   p_evt   Event received from the Connection Parameters Module.
 */
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
    ret_code_t err_code;

    if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
    {
        err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
        APP_ERROR_CHECK(err_code);
    }
}


/**@brief Function for handling a Connection Parameters error.
 *
 * @param[in]   nrf_error   Error code containing information about what went wrong.
 */
static void conn_params_error_handler(uint32_t nrf_error)
{
    APP_ERROR_HANDLER(nrf_error);
}


/**@brief Function for initializing the Connection Parameters module.
 */
static void conn_params_init(void)
{
    ret_code_t             err_code;
    ble_conn_params_init_t cp_init;

    memset(&cp_init, 0, sizeof(cp_init));

    cp_init.p_conn_params                  = NULL;
    cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
    cp_init.next_conn_params_update_delay  = NEXT_CONN_PARAMS_UPDATE_DELAY;
    cp_init.max_conn_params_update_count   = MAX_CONN_PARAMS_UPDATE_COUNT;
    cp_init.start_on_notify_cccd_handle    = m_rscs.meas_handles.cccd_handle;
    cp_init.disconnect_on_fail             = false;
    cp_init.evt_handler                    = on_conn_params_evt;
    cp_init.error_handler                  = conn_params_error_handler;

    err_code = ble_conn_params_init(&cp_init);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for putting the chip into sleep mode.
 *
 * @note This function will not return.
 */
static void sleep_mode_enter(void)
{
    ret_code_t err_code;

    err_code = bsp_indication_set(BSP_INDICATE_IDLE);
    APP_ERROR_CHECK(err_code);

    // Prepare wakeup buttons.
    err_code = bsp_btn_ble_sleep_mode_prepare();
    APP_ERROR_CHECK(err_code);

    // Go to system-off mode (this function will not return; wakeup will cause a reset).
    err_code = sd_power_system_off();
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling advertising events.
 *
 * @details This function will be called for advertising events which are passed to the application.
 *
 * @param[in] ble_adv_evt  Advertising event.
 */
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
    ret_code_t err_code;

    switch (ble_adv_evt)
    {
        case BLE_ADV_EVT_FAST:
            NRF_LOG_INFO("Fast advertising.");
            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;
    }
}


/**@brief Function for handling BLE events.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 * @param[in]   p_context   Unused.
 */
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
    ret_code_t err_code = NRF_SUCCESS;

    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_CONNECTED:
            NRF_LOG_INFO("Connected.");
            err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
            APP_ERROR_CHECK(err_code);
            m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
            err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GAP_EVT_DISCONNECTED:
            NRF_LOG_INFO("Disconnected.");
            m_conn_handle = BLE_CONN_HANDLE_INVALID;
            break;

        case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
        {
            NRF_LOG_DEBUG("PHY update request.");
            ble_gap_phys_t const phys =
            {
                .rx_phys = BLE_GAP_PHY_AUTO,
                .tx_phys = BLE_GAP_PHY_AUTO,
            };
            err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
            APP_ERROR_CHECK(err_code);
        } break;

        case BLE_GATTC_EVT_TIMEOUT:
            // Disconnect on GATT Client timeout event.
            NRF_LOG_DEBUG("GATT Client Timeout.");
            err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
                                             BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            APP_ERROR_CHECK(err_code);
            break;

        case BLE_GATTS_EVT_TIMEOUT:
            // Disconnect on GATT Server timeout event.
            NRF_LOG_DEBUG("GATT Server Timeout.");
            err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
                                             BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            APP_ERROR_CHECK(err_code);
            break;

        default:
            // No implementation needed.
            break;
    }
}


/**@brief Function for initializing the BLE stack.
 *
 * @details Initializes the SoftDevice and the BLE event interrupt.
 */
static void ble_stack_init(void)
{
    ret_code_t err_code;

    err_code = nrf_sdh_enable_request();
    APP_ERROR_CHECK(err_code);

    // Configure the BLE stack using the default settings.
    // Fetch the start address of the application RAM.
    uint32_t ram_start = 0;
    err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
    APP_ERROR_CHECK(err_code);

    ble_cfg_t ble_cfg;
    memset(&ble_cfg, 0x00, sizeof(ble_cfg));
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&ble_cfg.gap_cfg.device_name_cfg.write_perm);
    ble_cfg.gap_cfg.device_name_cfg.vloc        = BLE_GATTS_VLOC_STACK;
    ble_cfg.gap_cfg.device_name_cfg.p_value     = NULL;
    ble_cfg.gap_cfg.device_name_cfg.current_len = 0;
    ble_cfg.gap_cfg.device_name_cfg.max_len     = strlen(DEVICE_NAME);

    err_code = sd_ble_cfg_set(BLE_GAP_CFG_DEVICE_NAME, &ble_cfg, ram_start);
    APP_ERROR_CHECK(err_code);

    // Enable BLE stack.
    err_code = nrf_sdh_ble_enable(&ram_start);
    APP_ERROR_CHECK(err_code);

    // Register a handler for BLE events.
    NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}


/**@brief Function for handling events from the BSP module.
 *
 * @param[in]   event   Event generated by button press.
 */
static void bsp_event_handler(bsp_event_t event)
{
    ret_code_t err_code;

    switch (event)
    {
        case BSP_EVENT_SLEEP:
            sleep_mode_enter();
            break;

        case BSP_EVENT_DISCONNECT:
            err_code = sd_ble_gap_disconnect(m_conn_handle,
                                             BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            if (err_code != NRF_ERROR_INVALID_STATE)
            {
                APP_ERROR_CHECK(err_code);
            }
            break;

        case BSP_EVENT_WHITELIST_OFF:
            if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
            {
                err_code = ble_advertising_restart_without_whitelist(&m_advertising);
                if (err_code != NRF_ERROR_INVALID_STATE)
                {
                    APP_ERROR_CHECK(err_code);
                }
            }
            break;

        default:
            break;
    }
}


/**@brief Function for the Peer Manager initialization.
 */
static void peer_manager_init(void)
{
    ret_code_t err_code;

    err_code = pm_init();
    APP_ERROR_CHECK(err_code);

    err_code = pm_register(pm_evt_handler);
    APP_ERROR_CHECK(err_code);

    ble_gap_sec_params_t sec_param;

    memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));

    sec_param.bond           = SEC_PARAM_BOND;
    sec_param.mitm           = SEC_PARAM_MITM;
    sec_param.lesc           = SEC_PARAM_LESC;
    sec_param.keypress       = SEC_PARAM_KEYPRESS;
    sec_param.io_caps        = SEC_PARAM_IO_CAPABILITIES;
    sec_param.oob            = SEC_PARAM_OOB;
    sec_param.min_key_size   = SEC_PARAM_MIN_KEY_SIZE;
    sec_param.max_key_size   = SEC_PARAM_MAX_KEY_SIZE;
    sec_param.kdist_own.enc  = 1;
    sec_param.kdist_own.id   = 1;
    sec_param.kdist_peer.enc = 1;
    sec_param.kdist_peer.id  = 1;

    err_code = pm_sec_params_set(&sec_param);
    APP_ERROR_CHECK(err_code);
}


/**@brief Clear bond information from persistent storage.
 */
static void delete_bonds(void)
{
    ret_code_t err_code;

    NRF_LOG_INFO("Erase bonds");

    err_code = pm_peers_delete();
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing the Advertising functionality.
 */
static void advertising_init(void)
{
    ret_code_t             err_code;
    ble_advertising_init_t init;
    
#define ADV_SIZE 60
//#define SR_SIZE 20
    
    ble_advdata_manuf_data_t 		  adv_manuf_data_config;
    uint8_t 		                  adv_manuf_data_data[ADV_SIZE] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,
                                                                          0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,
                                                                          0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF};
    adv_manuf_data_config.data.size       = ADV_SIZE;
//    
//    ble_advdata_manuf_data_t 		  adv_manuf_data_sr_config;
//    uint8_t 		                  adv_manuf_data_sr_data[SR_SIZE] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF};
//    adv_manuf_data_config.data.size       = SR_SIZE;

    memset(&init, 0, sizeof(init));
    //---
    init.advdata.name_type               = BLE_ADVDATA_FULL_NAME;
//    init.srdata.name_type = BLE_ADVDATA_NO_NAME;
    init.advdata.include_appearance      = true;
    init.advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
    init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.advdata.uuids_complete.p_uuids  = m_adv_uuids;

    init.config.ble_adv_fast_enabled     = true;
    init.config.ble_adv_fast_interval    = APP_ADV_INTERVAL;
    init.config.ble_adv_fast_timeout     = APP_ADV_DURATION;

    init.config.ble_adv_primary_phy      = BLE_GAP_PHY_1MBPS;
    init.config.ble_adv_secondary_phy    = BLE_GAP_PHY_2MBPS;
    init.config.ble_adv_extended_enabled = true;
    //-----
//    adv_manuf_data_sr_config.data.p_data        = adv_manuf_data_sr_data;
//    adv_manuf_data_sr_config.data.size          = sizeof(adv_manuf_data_sr_data);
//    
    adv_manuf_data_config.data.p_data        = adv_manuf_data_data;
    adv_manuf_data_config.data.size          = sizeof(adv_manuf_data_data);
//    
    init.advdata.p_manuf_specific_data     = &adv_manuf_data_config;
//    init.srdata.p_manuf_specific_data      = &adv_manuf_data_sr_config;
    
    m_advertising.adv_params.properties.type = BLE_GAP_ADV_TYPE_EXTENDED_NONCONNECTABLE_SCANNABLE_UNDIRECTED;//BLE_GAP_ADV_TYPE_NONCONNECTABLE_SCANNABLE_UNDIRECTED
    m_advertising.adv_params.interval = APP_ADV_INTERVAL;
    m_advertising.adv_params.duration = APP_ADV_DURATION;
//
//    m_advertising.adv_params.p_peer_addr     = NULL;
//    m_advertising.adv_params.duration        = BLE_GAP_ADV_TIMEOUT_GENERAL_UNLIMITED;
//    m_advertising.adv_params.interval      = 0x40;
//    m_advertising.adv_params.primary_phy   = BLE_GAP_PHY_AUTO;
//    m_advertising.adv_params.secondary_phy   = BLE_GAP_PHY_AUTO;
//    m_advertising.adv_params.set_id         = 4;
//    m_advertising.adv_params.filter_policy = BLE_GAP_ADV_FP_ANY;
    
     // Prepare the scan response manufacturer specific data packet
    ble_advdata_manuf_data_t  manuf_data_response;
    uint8_t                     data_response[4] = {0xDE,0xAD};
    manuf_data_response.data.p_data         = data_response;
    manuf_data_response.data.size           = sizeof(data_response);
    init.srdata.name_type = BLE_ADVDATA_NO_NAME;
    init.srdata.p_manuf_specific_data = &manuf_data_response;
    
    //----

    init.evt_handler = on_adv_evt;

    err_code = ble_advertising_init(&m_advertising, &init);
    APP_ERROR_CHECK(err_code);

    ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}

//static void advertising_init(void)
//{
//    ble_advertising_init_t init;
//    ret_code_t             err_code;
//    static ble_advdata_manuf_data_t manuf_specific_data;
//    static ble_advdata_manuf_data_t srsp_manuf_specific_data;
//
//    manuf_specific_data.company_identifier = 0x5050;
//    srsp_manuf_specific_data.company_identifier = 0x5050;
//    
//     uint8_t 		                  adv_manuf_data_data[5] = {0xDE,0xAD,0xBE,0xEF,0xDE};
//
//    memset(&init, 0, sizeof(init));
//
//    manuf_specific_data.data.p_data = (uint8_t *) adv_manuf_data_data;
//    manuf_specific_data.data.size   = 5;
//    srsp_manuf_specific_data.data.p_data = (uint8_t *) adv_manuf_data_data;
//    srsp_manuf_specific_data.data.size = 5;
//
//    init.advdata.name_type               = BLE_ADVDATA_NO_NAME;
//    init.advdata.include_appearance      = false;
//    init.advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
//    init.advdata.p_manuf_specific_data = &manuf_specific_data;
//    init.srdata.p_manuf_specific_data = &srsp_manuf_specific_data;
////    init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
////    init.advdata.uuids_complete.p_uuids  = m_adv_uuids;
////    if(phy == BLE_GAP_PHY_CODED)
////    {
////        m_advertising.adv_params.primary_phy = BLE_GAP_PHY_CODED;
////        m_advertising.adv_params.secondary_phy = BLE_GAP_PHY_CODED;
////    }
////    else 
////    {
//        m_advertising.adv_params.primary_phy = BLE_GAP_PHY_1MBPS;
//        m_advertising.adv_params.secondary_phy = BLE_GAP_PHY_1MBPS;
////    }
////    m_advertising.adv_params.properties.type = BLE_GAP_ADV_TYPE_EXTENDED_NONCONNECTABLE_SCANNABLE_UNDIRECTED;
//    m_advertising.adv_params.properties.type = BLE_GAP_ADV_TYPE_EXTENDED_NONCONNECTABLE_SCANNABLE_UNDIRECTED;
////    m_advertising.adv_params.properties.type = BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED;
//    m_advertising.adv_params.scan_req_notification = 1;
//    m_advertising.adv_params.p_peer_addr     = NULL;    // Undirected advertisement.
//    m_advertising.adv_params.filter_policy   = BLE_GAP_ADV_FP_ANY;
//    m_advertising.adv_params.interval        = APP_ADV_INTERVAL;
//    m_advertising.adv_params.duration        = APP_ADV_DURATION_UNLIMITED;       // Timeout after 60 s
//    m_advertising.adv_params.channel_mask[4] = 0x00;
//
//    init.config.ble_adv_whitelist_enabled = true;
//    init.config.ble_adv_fast_enabled  = true;
//    init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
//    init.config.ble_adv_fast_timeout  = APP_ADV_DURATION;
//    init.config.ble_adv_slow_enabled = true;
//    init.config.ble_adv_slow_interval = APP_SLOW_ADV_INTERVAL;
//    init.config.ble_adv_slow_timeout = APP_SLOW_ADV_DURATION;
//    init.config.ble_adv_extended_enabled = true;
////    if(phy == BLE_GAP_PHY_CODED)
////    {
////        init.config.ble_adv_primary_phy = BLE_GAP_PHY_CODED;
////        init.config.ble_adv_secondary_phy = BLE_GAP_PHY_CODED;
////    }
////    else
////    {
//        init.config.ble_adv_primary_phy = BLE_GAP_PHY_1MBPS;
//        init.config.ble_adv_secondary_phy = BLE_GAP_PHY_1MBPS;
////    }
//
//
//    init.evt_handler = on_adv_evt;
//
//    err_code = ble_advertising_init(&m_advertising, &init);
//    APP_ERROR_CHECK(err_code);
//
//    ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
//
////    err_code = sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, m_advertising.adv_handle, TX_POWER_LEVEL);
////    APP_ERROR_CHECK(err_code);
//}





/**@brief Function for initializing buttons and leds.
 *
 * @param[out] p_erase_bonds  Will be true if the clear bonding button was pressed to wake the application up.
 */
static void buttons_leds_init(bool * p_erase_bonds)
{
    ret_code_t err_code;
    bsp_event_t startup_event;

    err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
    APP_ERROR_CHECK(err_code);

    err_code = bsp_btn_ble_init(NULL, &startup_event);
    APP_ERROR_CHECK(err_code);

    *p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}


/**@brief Function for initializing logging.
 */
static void log_init(void)
{
    ret_code_t err_code = NRF_LOG_INIT(NULL);
    APP_ERROR_CHECK(err_code);

    NRF_LOG_DEFAULT_BACKENDS_INIT();
}


/**@brief Function for initializing power management.
 */
static void power_management_init(void)
{
    ret_code_t err_code;
    err_code = nrf_pwr_mgmt_init();
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling the idle state (main loop).
 *
 * @details If there is no pending log operation, then sleep until next the next event occurs.
 */
static void idle_state_handle(void)
{
    if (NRF_LOG_PROCESS() == false)
    {
        nrf_pwr_mgmt_run();
    }
}


/**@brief Function for starting advertising.
 */
static void advertising_start(bool erase_bonds)
{
    if (erase_bonds == true)
    {
        delete_bonds();
        // Advertising is started by PM_EVT_PEERS_DELETE_SUCCEEDED event.
    }
    else
    {
        ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);

        APP_ERROR_CHECK(err_code);
    }
}


/**@brief Function for application main entry.
 */
int main(void)
{
    bool erase_bonds;

    // Initialize.
    log_init();
    timers_init();
    buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();
    advertising_init();
    services_init();
    sensor_simulator_init();
    conn_params_init();
    peer_manager_init();

    // Start execution.
    NRF_LOG_INFO("Running Speed and Cadence example started.");
    application_timers_start();

    advertising_start(erase_bonds);

    // Enter main loop.
    for (;;)
    {
        idle_state_handle();
    }
}


/**
 * @}
 */

Here is main.c, the only file modified.  I've been looking at examples, tweaking input parameters, and googling constraints for a day and a half.  

I would like to be able to have an extended advertisement with an extended scan response.  Any pointers and explanation of the valid set of input parameters to achieve this is greatly appreciated.

[Einar Thorsrud]

Hi,

I was not aware of this myself, but you are not allowed to have both scan response and advertising packets with data using extended advertising. See this post for details.

[Vance J Farren]

Thank you for your reply.  Do you know where this is specified in the core spec?  It would be helpful for team closure.  I have confirmed in testing that the softdevice will only take extended scan response data if advertising data is omitted.

[Einar Thorsrud]

Hi,

I see you already got an answer from my colleague Edvin in a private case. Copy-pasting the answer here in case it is useful for someone else.

Bluetooth Core Specification Version 5.3 | Vol 4, Part E section 7.8.53: LE Set Extended Advertising Parameters command (page 2450 in the Bluetooth Core Specification Version 5.3):

If extended advertising PDU types are being used (bit 4 = 0) then: The advertisement shall not be both connectable and scannable. High duty cycle directed connectable advertising (≤ 3.75 ms advertising interval) shall not be used (bit 3 = 0).