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nrf51 add ota dfu service on hrs_scanner or ble_nus example

hi all,

I have added the dfu service in one of example of sdk_11 ble_scanner_hrs I followed all help available on this forum and made sucessfuly compiled code but it stopped advertising?

any help is appreciate I have attached my main file

/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */
/**
 * @brief Heart Rate Service Sample Application main file.
 *
 * This file contains the source code for a sample application using the Heart Rate service
 * (and also 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_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_bas.h"
#include "ble_hrs.h"
#include "ble_dis.h"
#include "ble_conn_params.h"
#include "bsp.h"
#include "sensorsim.h"
#include "bsp_btn_ble.h"
#include "softdevice_handler.h"
#include "app_timer.h"
#include "device_manager.h"
#include "pstorage.h"
#include "app_trace.h"
#include "scanner_beacon.h"
#include "D:\SDK_Nordic\nRF5_SDK_11.0.0_89a8197\components\libraries\uart\app_uart.h"
#include "D:\SDK_Nordic\nRF5_SDK_11.0.0_89a8197\components\ble\ble_services\ble_dfu\ble_dfu.h"
#include "D:\SDK_Nordic\nRF5_SDK_11.0.0_89a8197\components\libraries\bootloader_dfu\dfu_app_handler.h"
#include "ble_nus.h"
#include "D:\SDK_Nordic\nRF5_SDK_11.0.0_89a8197\components\libraries\bootloader_dfu\bootloader.h"
#include "D:\SDK_Nordic\nRF5_SDK_11.0.0_89a8197\components\libraries\bootloader_dfu\bootloader_util.h"

#define IS_SRVC_CHANGED_CHARACT_PRESENT         1                                       /**< Include or not the service_changed characteristic. if not enabled, the server's database cannot be changed for the lifetime of the device*/

#define CENTRAL_LINK_COUNT                      0                                       /**< Number of central links used by the application. When changing this number remember to adjust the RAM settings*/
#define PERIPHERAL_LINK_COUNT                   1                                       /**< Number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/

#define SEARCHED_MAJOR                          0x1200
#define SEARCHED_MINOR                          0x3400
#define APP_COMPANY_IDENTIFIER                  0x0059                                  /**< Company identifier for Nordic Semiconductor ASA. as per www.bluetooth.org. */

/**@brief Function for handling a BeaconScanner event.
 *
 * @details This function will be called each time the scanner has found an advertiser with beacon data.
 *          In this simple implementation, it checks the Major and Minor and company ID fields from the beacon data,
 *          and if they match, @ref BSP_INDICATE_ALERT_3 is indicated. 
 *
 * @param[in]   p_evt   scanner event data.
 */
static void beacon_evt_handler(ble_scan_beacon_evt_t * p_evt)
{
    uint32_t err_code;

    if((p_evt->rcv_adv_packet.adv_data.major    == SEARCHED_MAJOR)
     &&(p_evt->rcv_adv_packet.adv_data.minor    == SEARCHED_MINOR)
     &&(p_evt->rcv_adv_packet.adv_data.manuf_id == APP_COMPANY_IDENTIFIER)
		)
    {
			  printf("\nMAJOR=%d\n",p_evt->rcv_adv_packet.adv_data.major);
			  printf("\nMINOR=%d\n",p_evt->rcv_adv_packet.adv_data.minor);
			  printf("\nNordicid=%d\n",p_evt->rcv_adv_packet.adv_data.manuf_id);
			  printf("\nrssi=%d\n",p_evt->rcv_adv_packet.adv_data.rssi);
			  printf("\nuuid=%d\n",p_evt->rcv_adv_packet.adv_data.uuid);
        err_code = bsp_indication_set(BSP_INDICATE_ALERT_3);
        APP_ERROR_CHECK(err_code);
    }
}


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

static ble_beacon_scanner_init_t m_beacon_scanner_init;
/*end addition for beacon*/


#define MAX_TEST_DATA_BYTES     (15U)                /**< max number of test bytes to be used for tx and rx. */
#define UART_TX_BUF_SIZE 256                         /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 1                           /**< UART RX buffer size. */



void uart_error_handle(app_uart_evt_t * p_event)
{
    if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
    {
        APP_ERROR_HANDLER(p_event->data.error_communication);
    }
    else if (p_event->evt_type == APP_UART_FIFO_ERROR)
    {
        APP_ERROR_HANDLER(p_event->data.error_code);
    }
}



#define DEVICE_NAME                          "Nordic_HRM_sca"                               /**< Name of device. Will be included in the advertising data. */
#define MANUFACTURER_NAME                    "NordicSemiconductor"                      /**< Manufacturer. Will be passed to Device Information Service. */
#define APP_ADV_INTERVAL                     480                                         /**< The advertising interval (in units of 0.625 ms. This value corresponds to 300 ms). */
#define APP_ADV_TIMEOUT_IN_SECONDS           180                                        /**< The advertising timeout in units of seconds. */

#define APP_TIMER_PRESCALER                  0                                          /**< Value of the RTC1 PRESCALER register. */
#define APP_TIMER_OP_QUEUE_SIZE              4                                          /**< Size of timer operation queues. */

#define BATTERY_LEVEL_MEAS_INTERVAL          APP_TIMER_TICKS(2000, APP_TIMER_PRESCALER) /**< Battery level measurement interval (ticks). */
#define MIN_BATTERY_LEVEL                    81                                         /**< Minimum simulated battery level. */
#define MAX_BATTERY_LEVEL                    100                                        /**< Maximum simulated battery level. */
#define BATTERY_LEVEL_INCREMENT              1                                          /**< Increment between each simulated battery level measurement. */

#define HEART_RATE_MEAS_INTERVAL             APP_TIMER_TICKS(1000, APP_TIMER_PRESCALER) /**< Heart rate measurement interval (ticks). */
#define MIN_HEART_RATE                       140                                        /**< Minimum heart rate as returned by the simulated measurement function. */
#define MAX_HEART_RATE                       300                                        /**< Maximum heart rate as returned by the simulated measurement function. */
#define HEART_RATE_INCREMENT                 10                                         /**< Value by which the heart rate is incremented/decremented for each call to the simulated measurement function. */

#define RR_INTERVAL_INTERVAL                 APP_TIMER_TICKS(300, APP_TIMER_PRESCALER)  /**< RR interval interval (ticks). */
#define MIN_RR_INTERVAL                      100                                        /**< Minimum RR interval as returned by the simulated measurement function. */
#define MAX_RR_INTERVAL                      500                                        /**< Maximum RR interval as returned by the simulated measurement function. */
#define RR_INTERVAL_INCREMENT                1                                          /**< Value by which the RR interval is incremented/decremented for each call to the simulated measurement function. */

#define SENSOR_CONTACT_DETECTED_INTERVAL     APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER) /**< Sensor Contact Detected toggle interval (ticks). */

#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, APP_TIMER_PRESCALER) /**< 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, APP_TIMER_PRESCALER)/**< 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. */

static uint16_t                              m_conn_handle = BLE_CONN_HANDLE_INVALID;   /**< Handle of the current connection. */
static ble_bas_t                             m_bas;                                     /**< Structure used to identify the battery service. */
static ble_hrs_t                             m_hrs;      /**< Structure used to identify the heart rate service. */
static ble_dfu_t                             m_dfus;
static bool                                  m_rr_interval_enabled = true;              /**< Flag for enabling and disabling the registration of new RR interval measurements (the purpose of disabling this is just to test sending HRM without RR interval data. */

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_heart_rate_sim_cfg;                      /**< Heart Rate sensor simulator configuration. */
static sensorsim_state_t                     m_heart_rate_sim_state;                    /**< Heart Rate sensor simulator state. */
static sensorsim_cfg_t                       m_rr_interval_sim_cfg;                     /**< RR Interval sensor simulator configuration. */
static sensorsim_state_t                     m_rr_interval_sim_state;                   /**< RR Interval sensor simulator state. */

APP_TIMER_DEF(m_battery_timer_id);                                                      /**< Battery timer. */
APP_TIMER_DEF(m_heart_rate_timer_id);                                                   /**< Heart rate measurement timer. */
APP_TIMER_DEF(m_rr_interval_timer_id);                                                  /**< RR interval timer. */
APP_TIMER_DEF(m_sensor_contact_timer_id);                                               /**< Sensor contact detected timer. */

static dm_application_instance_t             m_app_handle;                              /**< Application identifier allocated by device manager */
static ble_nus_t                        m_nus;                                      /**< Structure to identify the Nordic UART Service. */
//static uint16_t                         m_conn_handle = BLE_CONN_HANDLE_INVALID;    /**< Handle of the current connection. */

//static ble_uuid_t                       m_adv_uuids[] = {{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}};  /**< Universally unique service identifier. */

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



/**@brief   Function for handling app_uart events.
 *
 * @details This function will receive a single character from the app_uart module and append it to 
 *          a string. The string will be be sent over BLE when the last character received was a 
 *          'new line' i.e '\n' (hex 0x0D) or if the string has reached a length of 
 *          @ref NUS_MAX_DATA_LENGTH.
 */
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
    static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
    static uint8_t index = 0;
    uint32_t       err_code;

    switch (p_event->evt_type)
    {
        case APP_UART_DATA_READY:
            UNUSED_VARIABLE(app_uart_get(&data_array[index]));
            index++;

            if ((data_array[index - 1] == '\n') || (index >= (BLE_NUS_MAX_DATA_LEN)))
            {
                err_code = ble_nus_string_send(&m_nus, data_array, index);
                if (err_code != NRF_ERROR_INVALID_STATE)
                {
                    APP_ERROR_CHECK(err_code);
                }
                
                index = 0;
            }
            break;

        case APP_UART_COMMUNICATION_ERROR:
            APP_ERROR_HANDLER(p_event->data.error_communication);
            break;

        case APP_UART_FIFO_ERROR:
            APP_ERROR_HANDLER(p_event->data.error_code);
            break;

        default:
            break;
    }
}
/**@snippet [Handling the data received over UART] */


void uart_inti()
{
	
	  uint32_t err_code;
    const app_uart_comm_params_t comm_params =
      {
          RX_PIN_NUMBER,
          TX_PIN_NUMBER,
          RTS_PIN_NUMBER,
          CTS_PIN_NUMBER,
          APP_UART_FLOW_CONTROL_ENABLED,
          false,
          UART_BAUDRATE_BAUDRATE_Baud115200
      };

    APP_UART_FIFO_INIT(&comm_params,
                         UART_RX_BUF_SIZE,
                         UART_TX_BUF_SIZE,
                         uart_event_handle, // uart_error_handle,
                         APP_IRQ_PRIORITY_LOW,
                         err_code);

    APP_ERROR_CHECK(err_code);

    printf("\n\rStart: \n\r");

}

/**@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 the data from the Nordic UART Service.
 *
 * @details This function will process the data received from the Nordic UART BLE Service and send
 *          it to the UART module.
 *
 * @param[in] p_nus    Nordic UART Service structure.
 * @param[in] p_data   Data to be send to UART module.
 * @param[in] length   Length of the data.
 */
/**@snippet [Handling the data received over BLE] */
static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
    for (uint32_t i = 0; i < length; i++)
    {
        while(app_uart_put(p_data[i]) != NRF_SUCCESS);
    }
    while(app_uart_put('\n') != NRF_SUCCESS);
}

/**@brief Function for performing battery measurement and updating the Battery Level characteristic
 *        in Battery Service.
 */
static void battery_level_update(void)
{
    uint32_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);
    if ((err_code != NRF_SUCCESS) &&
        (err_code != NRF_ERROR_INVALID_STATE) &&
        (err_code != BLE_ERROR_NO_TX_PACKETS) &&
        (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 handling the Heart rate measurement timer timeout.
 *
 * @details This function will be called each time the heart rate measurement timer expires.
 *          It will exclude RR Interval data from every third measurement.
 *
 * @param[in]   p_context   Pointer used for passing some arbitrary information (context) from the
 *                          app_start_timer() call to the timeout handler.
 */
static void heart_rate_meas_timeout_handler(void * p_context)
{
    static uint32_t cnt = 0;
    uint32_t        err_code;
    uint16_t        heart_rate;

    UNUSED_PARAMETER(p_context);

    heart_rate = (uint16_t)sensorsim_measure(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);

    cnt++;
    err_code = ble_hrs_heart_rate_measurement_send(&m_hrs, heart_rate);
    if ((err_code != NRF_SUCCESS) &&
        (err_code != NRF_ERROR_INVALID_STATE) &&
        (err_code != BLE_ERROR_NO_TX_PACKETS) &&
        (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
    )
    {
        APP_ERROR_HANDLER(err_code);
    }

    // Disable RR Interval recording every third heart rate measurement.
    // NOTE: An application will normally not do this. It is done here just for testing generation
    //       of messages without RR Interval measurements.
    m_rr_interval_enabled = ((cnt % 3) != 0);
}


/**@brief Function for handling the RR interval timer timeout.
 *
 * @details This function will be called each time the RR interval 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 rr_interval_timeout_handler(void * p_context)
{
    UNUSED_PARAMETER(p_context);

    if (m_rr_interval_enabled)
    {
        uint16_t rr_interval;

        rr_interval = (uint16_t)sensorsim_measure(&m_rr_interval_sim_state,
                                                      &m_rr_interval_sim_cfg);
        ble_hrs_rr_interval_add(&m_hrs, rr_interval);
    }
}


/**@brief Function for handling the Sensor Contact Detected timer timeout.
 *
 * @details This function will be called each time the Sensor Contact Detected 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 sensor_contact_detected_timeout_handler(void * p_context)
{
    static bool sensor_contact_detected = false;

    UNUSED_PARAMETER(p_context);

    sensor_contact_detected = !sensor_contact_detected;
    ble_hrs_sensor_contact_detected_update(&m_hrs, sensor_contact_detected);
}

/**@brief Function for the Timer initialization.
 *
 * @details Initializes the timer module. This creates and starts application timers.
 */
static void timers_init(void)
{
    uint32_t err_code;

    // Initialize timer module.
    APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);

    // 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);

    err_code = app_timer_create(&m_heart_rate_timer_id,
                                APP_TIMER_MODE_REPEATED,
                                heart_rate_meas_timeout_handler);
    APP_ERROR_CHECK(err_code);

    err_code = app_timer_create(&m_rr_interval_timer_id,
                                APP_TIMER_MODE_REPEATED,
                                rr_interval_timeout_handler);
    APP_ERROR_CHECK(err_code);

    err_code = app_timer_create(&m_sensor_contact_timer_id,
                                APP_TIMER_MODE_REPEATED,
                                sensor_contact_detected_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)
{
    uint32_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_HEART_RATE_SENSOR_HEART_RATE_BELT);
    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 services that will be used by the application.
 *
 * @details Initialize the Heart Rate, Battery and Device Information services.
 */

/**@brief Function for preparing for system reset.
 *
 * @details This function implements @ref dfu_app_reset_prepare_t. It will be called by 
 *          @ref dfu_app_handler.c before entering the bootloader/DFU.
 *          This allows the current running application to shut down gracefully.
 */
static void reset_prepare(void)
{
    uint32_t err_code;

    if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
    {
        // Disconnect from peer.
        err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
        APP_ERROR_CHECK(err_code);
        err_code = bsp_indication_set(BSP_INDICATE_IDLE);
        APP_ERROR_CHECK(err_code);
    }
    else
    {
        // If not connected, the device will be advertising. Hence stop the advertising.
       // advertising_stop();
    }

    err_code = ble_conn_params_stop();
    APP_ERROR_CHECK(err_code);

   // nrf_delay_ms(500);
}
static void services_init(void)
{
    uint32_t       err_code;
    ble_hrs_init_t hrs_init;
    ble_bas_init_t bas_init;
    ble_dis_init_t dis_init;
    uint8_t        body_sensor_location;

    // Initialize Heart Rate Service.
    body_sensor_location = BLE_HRS_BODY_SENSOR_LOCATION_FINGER;

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

    hrs_init.evt_handler                 = NULL;
    hrs_init.is_sensor_contact_supported = true;
    hrs_init.p_body_sensor_location      = &body_sensor_location;

    // Here the sec level for the Heart Rate Service can be changed/increased.
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&hrs_init.hrs_hrm_attr_md.cccd_write_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hrs_init.hrs_hrm_attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hrs_init.hrs_hrm_attr_md.write_perm);

    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&hrs_init.hrs_bsl_attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hrs_init.hrs_bsl_attr_md.write_perm);

    err_code = ble_hrs_init(&m_hrs, &hrs_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.
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&bas_init.battery_level_char_attr_md.cccd_write_perm);
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&bas_init.battery_level_char_attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&bas_init.battery_level_char_attr_md.write_perm);

    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&bas_init.battery_level_report_read_perm);

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

    ble_srv_ascii_to_utf8(&dis_init.manufact_name_str, (char *)MANUFACTURER_NAME);

    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&dis_init.dis_attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&dis_init.dis_attr_md.write_perm);

    err_code = ble_dis_init(&dis_init);
    APP_ERROR_CHECK(err_code);
		
		 ble_dfu_init_t   dfus_init;

    // Initialize the Device Firmware Update Service.
    memset(&dfus_init, 0, sizeof(dfus_init));

    dfus_init.evt_handler   = dfu_app_on_dfu_evt;
    dfus_init.error_handler = NULL;
    dfus_init.evt_handler   = dfu_app_on_dfu_evt;
  //  dfus_init.revision      = DFU_REVISION;

    err_code = ble_dfu_init(&m_dfus, &dfus_init);
    APP_ERROR_CHECK(err_code);

    dfu_app_reset_prepare_set(reset_prepare);
    dfu_app_dm_appl_instance_set(m_app_handle);
		
		 
    ble_nus_init_t nus_init;
    
    memset(&nus_init, 0, sizeof(nus_init));

    nus_init.data_handler = nus_data_handler;
    
    err_code = ble_nus_init(&m_nus, &nus_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);

    m_heart_rate_sim_cfg.min          = MIN_HEART_RATE;
    m_heart_rate_sim_cfg.max          = MAX_HEART_RATE;
    m_heart_rate_sim_cfg.incr         = HEART_RATE_INCREMENT;
    m_heart_rate_sim_cfg.start_at_max = false;

    sensorsim_init(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);

    m_rr_interval_sim_cfg.min          = MIN_RR_INTERVAL;
    m_rr_interval_sim_cfg.max          = MAX_RR_INTERVAL;
    m_rr_interval_sim_cfg.incr         = RR_INTERVAL_INCREMENT;
    m_rr_interval_sim_cfg.start_at_max = false;

    sensorsim_init(&m_rr_interval_sim_state, &m_rr_interval_sim_cfg);
}


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

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

    err_code = app_timer_start(m_heart_rate_timer_id, HEART_RATE_MEAS_INTERVAL, NULL);
    APP_ERROR_CHECK(err_code);

    err_code = app_timer_start(m_rr_interval_timer_id, RR_INTERVAL_INTERVAL, NULL);
    APP_ERROR_CHECK(err_code);

    err_code = app_timer_start(m_sensor_contact_timer_id, SENSOR_CONTACT_DETECTED_INTERVAL, 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)
{
    uint32_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)
{
    uint32_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_hrs.hrm_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)
{
    uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
    APP_ERROR_CHECK(err_code);

    err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
    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)
{
    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;
    }
}


/**@brief Function for handling the Application's BLE Stack events.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 */
static void on_ble_evt(ble_evt_t * p_ble_evt)
{
    uint32_t err_code;

    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_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;
            
            break;

        case BLE_GAP_EVT_DISCONNECTED:
            err_code = bsp_indication_set(BSP_INDICATE_IDLE);
            APP_ERROR_CHECK(err_code);

            err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
            APP_ERROR_CHECK(err_code);
            break;

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


/**@brief Function for dispatching a BLE stack event to all modules with a BLE stack event handler.
 *
 * @details This function is called from the BLE Stack event interrupt handler after a BLE stack
 *          event has been received.
 *
 * @param[in]   p_ble_evt   Bluetooth stack event.
 */
static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{
    app_beacon_scanner_on_ble_evt(p_ble_evt);
    dm_ble_evt_handler(p_ble_evt);
    ble_hrs_on_ble_evt(&m_hrs, p_ble_evt);
    ble_bas_on_ble_evt(&m_bas, p_ble_evt);
    ble_conn_params_on_ble_evt(p_ble_evt);
    bsp_btn_ble_on_ble_evt(p_ble_evt);
    on_ble_evt(p_ble_evt);
    ble_advertising_on_ble_evt(p_ble_evt);
	 // ble_dfu_on_ble_evt(&m_dfus, p_ble_evt);
}


/**@brief Function for dispatching a system event to interested modules.
 *
 * @details This function is called from the System event interrupt handler after a system
 *          event has been received.
 *
 * @param[in]   sys_evt   System stack event.
 */
static void sys_evt_dispatch(uint32_t sys_evt)
{
    pstorage_sys_event_handler(sys_evt);
    app_beacon_scanner_on_sys_evt(sys_evt);
    ble_advertising_on_sys_evt(sys_evt);
}


/**@brief Function for initializing the beacon scanner module.
 */
static void scanner_init()
{
    m_beacon_scanner_init.evt_handler   = beacon_evt_handler;
    m_beacon_scanner_init.error_handler = beacon_scanner_error_handler;
    app_beacon_scanner_init(&m_beacon_scanner_init);
}


/**@brief Function for starting the beacon scanner module.
 */
static void scanner_start()
{
    app_beacon_scanner_start();
}


/**@brief Function for handling the data from the Nordic UART Service.
 *
 * @details This function will process the data received from the Nordic UART BLE Service and send
 *          it to the UART module.
 *
 * @param[in] p_nus    Nordic UART Service structure.
 * @param[in] p_data   Data to be send to UART module.
 * @param[in] length   Length of the data.
 */
/**@snippet [Handling the data received over BLE] */
/*static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
    for (uint32_t i = 0; i < length; i++)
    {
        while(app_uart_put(p_data[i]) != NRF_SUCCESS);
    }
    while(app_uart_put('\n') != NRF_SUCCESS);
}*/
/**@brief Function for initializing the BLE stack.
 *
 * @details Initializes the SoftDevice and the BLE event interrupt.
 */
static void ble_stack_init(bool init_softdevice)
{
    uint32_t err_code;
    
   sd_mbr_command_t com = {SD_MBR_COMMAND_INIT_SD, };
    nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;

    if (init_softdevice)
    {
        err_code = sd_mbr_command(&com);
        APP_ERROR_CHECK(err_code);
    }
    
    err_code = sd_softdevice_vector_table_base_set(BOOTLOADER_REGION_START);
    APP_ERROR_CHECK(err_code);
    
    // Initialize the SoftDevice handler module.
    SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);
    
    ble_enable_params_t ble_enable_params;
    err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
                                                    PERIPHERAL_LINK_COUNT,
                                                    &ble_enable_params);
    APP_ERROR_CHECK(err_code);
    
    //Check the ram settings against the used number of links
    CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT,PERIPHERAL_LINK_COUNT);
    
    // Enable BLE stack.
    err_code = softdevice_enable(&ble_enable_params);
    APP_ERROR_CHECK(err_code);

    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
    APP_ERROR_CHECK(err_code);

    // Register with the SoftDevice handler module for BLE events.
    err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
    APP_ERROR_CHECK(err_code);
}


/**@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)
{
    uint32_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;

        default:
            break;
    }
}


/**@brief Function for handling the Device Manager events.
 *
 * @param[in]   p_evt   Data associated to the device manager event.
 */
static uint32_t device_manager_evt_handler(dm_handle_t const    * p_handle,
                                           dm_event_t const     * p_event,
                                           ret_code_t           event_result)
{
    APP_ERROR_CHECK(event_result);
    return NRF_SUCCESS;
}


/**@brief Function for the Device Manager initialization.
 *
 * @param[in] erase_bonds  Indicates whether bonding information should be cleared from
 *                         persistent storage during initialization of the Device Manager.
 */
static void device_manager_init(bool erase_bonds)
{
    uint32_t               err_code;
    dm_init_param_t        init_param = {.clear_persistent_data = erase_bonds};
    dm_application_param_t register_param;
    
    // Initialize persistent storage module.
    err_code = pstorage_init();
    APP_ERROR_CHECK(err_code);

    err_code = dm_init(&init_param);
    APP_ERROR_CHECK(err_code);

    memset(&register_param.sec_param, 0, sizeof(ble_gap_sec_params_t));
    
    register_param.sec_param.bond         = SEC_PARAM_BOND;
    register_param.sec_param.mitm         = SEC_PARAM_MITM;
    register_param.sec_param.lesc         = SEC_PARAM_LESC;
    register_param.sec_param.keypress     = SEC_PARAM_KEYPRESS;
    register_param.sec_param.io_caps      = SEC_PARAM_IO_CAPABILITIES;
    register_param.sec_param.oob          = SEC_PARAM_OOB;
    register_param.sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
    register_param.sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
    register_param.evt_handler            = device_manager_evt_handler;
    register_param.service_type           = DM_PROTOCOL_CNTXT_GATT_SRVR_ID;

    err_code = dm_register(&m_app_handle, &register_param);
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing the Advertising functionality.
 */
static void advertising_init(void)
{
    uint32_t      err_code;
    ble_advdata_t advdata;

    // Build advertising data struct to pass into @ref ble_advertising_init.
    memset(&advdata, 0, sizeof(advdata));

    advdata.name_type               = BLE_ADVDATA_FULL_NAME;
    advdata.include_appearance      = true;
    advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
    advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    advdata.uuids_complete.p_uuids  = m_adv_uuids;

    ble_adv_modes_config_t options = {0};
    options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
    options.ble_adv_fast_interval = APP_ADV_INTERVAL;
    options.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;

    err_code = ble_advertising_init(&advdata, NULL, &options, on_adv_evt, NULL);
    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)
{
    bsp_event_t startup_event;

    uint32_t err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS,
                                 APP_TIMER_TICKS(100, APP_TIMER_PRESCALER),
                                 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 the Power manager.
 */
static void power_manage(void)
{
    uint32_t err_code = sd_app_evt_wait();
    APP_ERROR_CHECK(err_code);
}


/**@brief Function for application main entry.
 */
int main(void)
{
    uint32_t err_code;
    bool erase_bonds;
    bool     dfu_start = false;
    bool     app_reset = (NRF_POWER->GPREGRET == BOOTLOADER_DFU_START);
    // Initialize.
    timers_init();
	  uart_inti();
    buttons_leds_init(&erase_bonds);
    ble_stack_init(!app_reset);
    device_manager_init(erase_bonds);
    gap_params_init();
    advertising_init();
    services_init();
    //sensor_simulator_init();
   // conn_params_init();
    scanner_init();

    // Start execution.
    scanner_start();
  //  application_timers_start();
    err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
    APP_ERROR_CHECK(err_code);

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


I have attached the bootloder_util.c ,ble_dfu.c,dfu_app_handler.c and made changes according it.

I also changed ram setting in keil.

Thanks in advance

Parents
  • Hello,

    I have not tested to verify this, but it seems like it is only a matter of how it is presented using the printf() function.

    can you try to cast to the correct lengths before printing them? You must look in the ble_scan_beacon_evt_t->rcv_adv_packet types to see what it actually is.

    E.g. the address are actually uin8_t hexadecimal values:

    printf("Connecting to target %02x:%02x:%02x:%02x:%02x:%02x:\r\n", //removed one %x. You had 7. Also added %02x, so that it adds 0's if the hexadecimal is 0x05, for example.
    			                     (uint8_t)p_evt->rcv_adv_packet.addr.addr[0],
    			                     (uint8_t)p_evt->rcv_adv_packet.addr.addr[1],
    			                     (uint8_t)p_evt->rcv_adv_packet.addr.addr[2],
    			                     (uint8_t)p_evt->rcv_adv_packet.addr.addr[3],
    			                     (uint8_t)p_evt->rcv_adv_packet.addr.addr[4],
    			                     (uint8_t)p_evt->rcv_adv_packet.addr.addr[5]);

    also casting to 8 bit values before printing. I believe that you get a bit random values, because you don't specify what to print.

    Also, the MAJOR and MINOR values are actually correct, but here you need to "trim" the values as well.

    4608 = 0x1200

    13312 = 0x3400.

    Try to print:

    printf("MAJOR = %02x\n", (uint16_t)p_evt->rcv_adv_packet.adv_data.major);      //note the %x

    Best regards,

    Edvin

  • hi edvin still getting the wrong mac address I followed the tips you given its printing the hex value for major and minor correct but MAC iD,UUID comes wrong and RSSI comes same for any beacon place.

    Here the out 

    MAJOR=0x 1200
    
    MINOR=0x3400
    
    Nordicid=0x59
    
    rssi=-0xc3
    
    uuid=874713601
    Connecting to target 253c20003208
    
    MAJOR=0x 1200
    
    MINOR=0x3400
    
    Nordicid=0x59
    
    rssi=-0xc3
    
    uuid=874713601
    Connecting to target 253c20003208
    

    I made changes to code as per your suggest

                    

    static void beacon_evt_handler(ble_scan_beacon_evt_t * p_evt)
    {
        uint32_t err_code;
    	// const ble_gap_evt_t * p_gap_evt = &p_evt->evt.gap_evt;
    	// const ble_gap_evt_adv_report_t * p_adv_report = &p_gap_evt->params.adv_report;
    
        if((p_evt->rcv_adv_packet.adv_data.major    == SEARCHED_MAJOR)
         &&(p_evt->rcv_adv_packet.adv_data.minor    == SEARCHED_MINOR)
         &&(p_evt->rcv_adv_packet.adv_data.manuf_id == APP_COMPANY_IDENTIFIER))
        {
    			
    			  printf("\nMAJOR=0x %02x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.major);
    			  printf("\nMINOR=0x%02x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.minor);
    			  printf("\nNordicid=0x%02x\n",(uint8_t)p_evt->rcv_adv_packet.adv_data.manuf_id);
    			  printf("\nrssi=-0x%02x\n",(uint8_t)p_evt->rcv_adv_packet.adv_data.rssi);
    			  printf("\nuuid=%d\n",p_evt->rcv_adv_packet.adv_data.uuid);
    			  printf("Connecting to target %02x%02x%02x%02x%02x%02x\r\n",
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[5],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[4],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[3],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[2],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[1],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[0]);
    			
                                 
    			  
            err_code = bsp_indication_set(BSP_INDICATE_ALERT_3);
            APP_ERROR_CHECK(err_code);
        }
    }
    _______

  • /* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
     *
     * The information contained herein is property of Nordic Semiconductor ASA.
     * Terms and conditions of usage are described in detail in NORDIC
     * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
     *
     * Licensees are granted free, non-transferable use of the information. NO
     * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
     * the file.
     *
     */
    #include "scanner_beacon.h"
    #include <stdio.h>
    #include <string.h>
    
    #include "app_error.h"
    #include "app_util.h"
    
    
    #define SCAN_INTERVAL_MS  100
    #define WINDOW_LEN_MS    (SCAN_INTERVAL_MS / 4)
    #define MAX_ADV_PACK_LEN (BLE_GAP_ADV_MAX_SIZE + BLE_GAP_ADDR_LEN + 2)
    #define ADV_TYPE_LEN      2
    #define BEACON_DATA_LEN   21
    
    static struct
    {
        ble_scan_beacon_evt_handler_t evt_handler;
        ble_srv_error_handler_t       error_handler;                      /**< Function to be called in case of an error. */
        ble_gap_scan_params_t         scan_params;
    } m_beacon_scanner;
    
    static void decode_ad_type_flags(uint8_t *buffer, uint8_t len, adv_packet_t *adv_packet)
    {
        int i = 1;
        adv_packet->gap_ad_flags = buffer[i];
    }
    
    
    static void decode_ad_manuf_spec_data(uint8_t *buffer, uint8_t len, adv_packet_t *adv_packet)
    {
        int i = 1;
        adv_packet->adv_data.manuf_id = uint16_decode(&buffer[i]);
        i += sizeof(uint16_t);
        adv_packet->adv_data.beacon_dev_type = buffer[i++];
        uint8_t data_len = buffer[i++];
        if (data_len == BEACON_DATA_LEN)
        {
            memcpy(&adv_packet->adv_data.uuid, &buffer[i], sizeof(ble_uuid128_t));
            i += sizeof(ble_uuid128_t);
            adv_packet->adv_data.major = uint16_decode(&buffer[i]);
            i += sizeof(uint16_t);
            adv_packet->adv_data.minor = uint16_decode(&buffer[i]);
            i += sizeof(uint16_t);
            adv_packet->adv_data.rssi = uint16_decode(&buffer[i]);
        }
        else
        {
            memset(&adv_packet->adv_data.uuid, 0, sizeof(ble_uuid128_t));
            adv_packet->adv_data.major = 0;
            adv_packet->adv_data.minor = 0;
            adv_packet->adv_data.rssi = 0;
        }
    }
    
    
    static uint32_t decode_advertising(uint8_t *buffer, uint8_t buffer_len, adv_packet_t *adv_packet)
    {
        uint8_t i = 0; 
        
        do
        {
            uint8_t field_len = buffer[i++];
            if(buffer[i] == BLE_GAP_AD_TYPE_FLAGS)
            {
                if (field_len != ADV_TYPE_LEN)
                {
                    return NRF_ERROR_NOT_FOUND;
                }
                decode_ad_type_flags(&buffer[i], field_len, adv_packet);
                i += field_len;
            }
            else if (buffer[i] == BLE_GAP_AD_TYPE_MANUFACTURER_SPECIFIC_DATA)
            {
                decode_ad_manuf_spec_data(&buffer[i], field_len, adv_packet);
                i += field_len;
            }
        }while( i < buffer_len);
    
        return NRF_SUCCESS;    
    }
    
    
    void app_beacon_scanner_on_sys_evt(uint32_t event)
    {
        // no implementation needed
    }
    
    void app_beacon_scanner_on_ble_evt(ble_evt_t * p_ble_evt)
    {
        if (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_REPORT)
        {
            ble_scan_beacon_evt_t evt;
            uint32_t err_code = decode_advertising(p_ble_evt->evt.gap_evt.params.adv_report.data, p_ble_evt->evt.gap_evt.params.adv_report.dlen, &evt.rcv_adv_packet);
            if (err_code == NRF_SUCCESS)
            {
                if (m_beacon_scanner.evt_handler != NULL)
                {
                        evt.evt_type = BLE_SCAN_BEACON_ADVERTISER_FOUND;
                        m_beacon_scanner.evt_handler(&evt);
                }
            }
        }
    }
    
    void app_beacon_scanner_init(ble_beacon_scanner_init_t * p_init)
    {
        m_beacon_scanner.evt_handler = p_init->evt_handler;
        m_beacon_scanner.error_handler= p_init->error_handler;
        
        memset(&m_beacon_scanner.scan_params, 0, sizeof(m_beacon_scanner.scan_params));
        m_beacon_scanner.scan_params.active      = false;
        m_beacon_scanner.scan_params.selective   = false;
        m_beacon_scanner.scan_params.p_whitelist = NULL;
        m_beacon_scanner.scan_params.interval    = MSEC_TO_UNITS(SCAN_INTERVAL_MS, UNIT_0_625_MS); 
        m_beacon_scanner.scan_params.window      = MSEC_TO_UNITS(WINDOW_LEN_MS, UNIT_0_625_MS);    
        m_beacon_scanner.scan_params.timeout     = 0; // disable timeout
    }
    
    void app_beacon_scanner_start(void)
    {
        uint32_t err_code;
    
        err_code = sd_ble_gap_scan_start(&m_beacon_scanner.scan_params);
        if (err_code != NRF_SUCCESS)
        {
            if (m_beacon_scanner.error_handler != NULL)
            {
                m_beacon_scanner.error_handler(err_code);
            }
        }
    }
    
    void app_beacon_scanner_stop(void)
    {
        uint32_t err_code;
        
        err_code = sd_ble_gap_scan_stop();
        if (err_code != NRF_SUCCESS)
        {
            if (m_beacon_scanner.error_handler != NULL)
            {
                m_beacon_scanner.error_handler(err_code);
            }
        }
    }
    
    
    this is the file which decode the beacon advertising

    and this is main

    /* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
     *
     * The information contained herein is property of Nordic Semiconductor ASA.
     * Terms and conditions of usage are described in detail in NORDIC
     * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
     *
     * Licensees are granted free, non-transferable use of the information. NO
     * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
     * the file.
     *
     */
    /** @example examples/ble_peripheral/ble_app_hrs/main.c
     *
     * @brief Heart Rate Service Sample Application main file.
     *
     * This file contains the source code for a sample application using the Heart Rate service
     * (and also 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_hci.h"
    #include "ble_srv_common.h"
    #include "ble_advdata.h"
    #include "ble_advertising.h"
    #include "ble_bas.h"
    #include "ble_hrs.h"
    #include "ble_dis.h"
    #ifdef BLE_DFU_APP_SUPPORT
    #include "ble_dfu.h"
    #include "dfu_app_handler.h"
    #endif // BLE_DFU_APP_SUPPORT
    #include "ble_conn_params.h"
    #include "boards.h"
    #include "sensorsim.h"
    #include "softdevice_handler.h"
    #include "app_timer.h"
    #include "device_manager.h"
    #include "pstorage.h"
    #include "app_trace.h"
    #include "bsp.h"
    #include "nrf_delay.h"
    #include "bsp_btn_ble.h"
    #include "ble_nus_c.h"
    #include "app_uart.h"
    
    #define IS_SRVC_CHANGED_CHARACT_PRESENT  1                                          /**< Include or not the service_changed characteristic. if not enabled, the server's database cannot be changed for the lifetime of the device*/
    
    #define CENTRAL_LINK_COUNT               0                                          /**< Number of central links used by the application. When changing this number remember to adjust the RAM settings*/
    #define PERIPHERAL_LINK_COUNT            1                                          /**< Number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/
    
    #define DEVICE_NAME                      "scanner"                               /**< Name of device. Will be included in the advertising data. */
    #define MANUFACTURER_NAME                "NordicSemiconductor"                      /**< Manufacturer. Will be passed to Device Information Service. */
    #define APP_ADV_INTERVAL                 300                                        /**< The advertising interval (in units of 0.625 ms. This value corresponds to 25 ms). */
    #define APP_ADV_TIMEOUT_IN_SECONDS       180                                        /**< The advertising timeout in units of seconds. */
    
    #define APP_TIMER_PRESCALER              0                                          /**< Value of the RTC1 PRESCALER register. */
    #define APP_TIMER_OP_QUEUE_SIZE         2                                         /**< Size of timer operation queues. */
    
    #define SCAN_INTERVAL           0x00A0                          /**< Determines scan interval in units of 0.625 millisecond. */
    #define SCAN_WINDOW             0x0050                          /**< Determines scan window in units of 0.625 millisecond. */
    #define SCAN_ACTIVE             1                               /**< If 1, performe active scanning (scan requests). */
    #define SCAN_SELECTIVE          0                               /**< If 1, ignore unknown devices (non whitelisted). */
    #define SCAN_TIMEOUT            0x0000                          /**< Timout when scanning. 0x0000 disables timeout. */
    
    //#define BATTERY_LEVEL_MEAS_INTERVAL      APP_TIMER_TICKS(2000, APP_TIMER_PRESCALER) /**< Battery level measurement interval (ticks). */
    //#define MIN_BATTERY_LEVEL                81                                         /**< Minimum simulated battery level. */
    //#define MAX_BATTERY_LEVEL                100                                        /**< Maximum simulated 7battery level. */
    //#define BATTERY_LEVEL_INCREMENT          1                                          /**< Increment between each simulated battery level measurement. */
    
    //#define HEART_RATE_MEAS_INTERVAL         APP_TIMER_TICKS(1000, APP_TIMER_PRESCALER) /**< Heart rate measurement interval (ticks). */
    //#define MIN_HEART_RATE                   140                                        /**< Minimum heart rate as returned by the simulated measurement function. */
    //#define MAX_HEART_RATE                   300                                        /**< Maximum heart rate as returned by the simulated measurement function. */
    //#define HEART_RATE_INCREMENT             10                                         /**< Value by which the heart rate is incremented/decremented for each call to the simulated measurement function. */
    
    //#define RR_INTERVAL_INTERVAL             APP_TIMER_TICKS(300, APP_TIMER_PRESCALER)  /**< RR interval interval (ticks). */
    //#define MIN_RR_INTERVAL                  100                                        /**< Minimum RR interval as returned by the simulated measurement function. */
    //#define MAX_RR_INTERVAL                  500                                        /**< Maximum RR interval as returned by the simulated measurement function. */
    //#define RR_INTERVAL_INCREMENT            1                                          /**< Value by which the RR interval is incremented/decremented for each call to the simulated measurement function. */
    
    //#define SENSOR_CONTACT_DETECTED_INTERVAL APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER) /**< Sensor Contact Detected toggle interval (ticks). */
    
    #define MIN_CONN_INTERVAL                MSEC_TO_UNITS(400, UNIT_1_25_MS)           /**< Minimum acceptable connection interval (0.4 seconds). */
    #define MAX_CONN_INTERVAL                MSEC_TO_UNITS(650, UNIT_1_25_MS)           /**< Maximum acceptable connection interval (0.65 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, APP_TIMER_PRESCALER) /**< 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, APP_TIMER_PRESCALER)/**< 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. */
    #ifdef BLE_DFU_APP_SUPPORT
    #define DFU_REV_MAJOR                    0x00                                       /** DFU Major revision number to be exposed. */
    #define DFU_REV_MINOR                    0x01                                       /** DFU Minor revision number to be exposed. */
    #define DFU_REVISION                     ((DFU_REV_MAJOR << 8) | DFU_REV_MINOR)     /** DFU Revision number to be exposed. Combined of major and minor versions. */
    #define APP_SERVICE_HANDLE_START         0x000C                                     /**< Handle of first application specific service when when service changed characteristic is present. */
    #define BLE_HANDLE_MAX                   0xFFFF                                     /**< Max handle value in BLE. */
    
    
    #define UUID16_SIZE             2                               /**< Size of 16 bit UUID */
    #define UUID32_SIZE             4                               /**< Size of 32 bit UUID */
    #define UUID128_SIZE            16                              /**< Size of 128 bit UUID */
    
    static ble_nus_c_t              m_ble_nus_c;                    /**< Instance of NUS service. Must be passed to all NUS_C API calls. */
    static ble_db_discovery_t       m_ble_db_discovery;             /**< Instance of database discovery module. Must be passed to all db_discovert API calls */
    
    #define UART_TX_BUF_SIZE        256                             /**< UART TX buffer size. */
    #define UART_RX_BUF_SIZE        256                             /**< UART RX buffer size. */
    
    #define MIN_CONNECTION_INTERVAL MSEC_TO_UNITS(20, UNIT_1_25_MS) /**< Determines minimum connection interval in millisecond. */
    #define MAX_CONNECTION_INTERVAL MSEC_TO_UNITS(75, UNIT_1_25_MS) /**< Determines maximum connection interval in millisecond. */
    #define SLAVE_LATENCY           0                               /**< Determines slave latency in counts of connection events. */
    #define SUPERVISION_TIMEOUT     MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Determines supervision time-out in units of 10 millisecond. */
    
    
    
    STATIC_ASSERT(IS_SRVC_CHANGED_CHARACT_PRESENT);                                     /** When having DFU Service support in application the Service Changed Characteristic should always be present. */
    #endif // BLE_DFU_APP_SUPPORT
    
    #define NUS_SERVICE_UUID_TYPE   BLE_UUID_TYPE_VENDOR_BEGIN
    
    
    static uint16_t                          m_conn_handle = BLE_CONN_HANDLE_INVALID;   /**< Handle of the current connection. */
    //static ble_bas_t                         m_bas;                                     /**< Structure used to identify the battery service. */
    //static ble_hrs_t                         m_hrs;                                     /**< Structure used to identify the heart rate service. */
    //static bool                              m_rr_interval_enabled = true;              /**< Flag for enabling and disabling the registration of new RR interval measurements (the purpose of disabling this is just to test sending HRM without RR interval data. */
    
    //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_heart_rate_sim_cfg;                      /**< Heart Rate sensor simulator configuration. */
    //static sensorsim_state_t                 m_heart_rate_sim_state;                    /**< Heart Rate sensor simulator state. */
    //static sensorsim_cfg_t                   m_rr_interval_sim_cfg;                     /**< RR Interval sensor simulator configuration. */
    //static sensorsim_state_t                 m_rr_interval_sim_state;                   /**< RR Interval sensor simulator state. */
    
    //APP_TIMER_DEF(m_battery_timer_id);                                                  /**< Battery timer. */
    //APP_TIMER_DEF(m_heart_rate_timer_id);                                               /**< Heart rate measurement timer. */
    //APP_TIMER_DEF(m_rr_interval_timer_id);                                              /**< RR interval timer. */                 /**< RR interval timer. */
    //APP_TIMER_DEF(m_sensor_contact_timer_id);                                           /**< Sensor contact detected timer. */
    
    static dm_application_instance_t         m_app_handle;                              /**< Application identifier allocated by device manager */
    
    static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_HEART_RATE_SERVICE,         BLE_UUID_TYPE_BLE},
                                       {BLE_UUID_BATTERY_SERVICE,            BLE_UUID_TYPE_BLE},
                                       {BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE}}; /**< Universally unique service identifiers. */
    #ifdef BLE_DFU_APP_SUPPORT
    static ble_dfu_t                         m_dfus;                                    /**< Structure used to identify the DFU service. */
    #endif // BLE_DFU_APP_SUPPORT
    
    
    /**@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);
    }
    
    //nus_service
    
    
    /**
     * @brief Connection parameters requested for connection.
     */
    static const ble_gap_conn_params_t m_connection_param =
      {
        (uint16_t)MIN_CONNECTION_INTERVAL,  // Minimum connection
        (uint16_t)MAX_CONNECTION_INTERVAL,  // Maximum connection
        (uint16_t)SLAVE_LATENCY,            // Slave latency
        (uint16_t)SUPERVISION_TIMEOUT       // Supervision time-out
      };
    
    /***
     * @brief NUS uuid
     */
    static const ble_uuid_t m_nus_uuid =
      {
        .uuid = BLE_UUID_NUS_SERVICE,
        .type = NUS_SERVICE_UUID_TYPE
      };
    
    	/**@brief Function for handling database discovery events.
     *
     * @details This function is callback function to handle events from the database discovery module.
     *          Depending on the UUIDs that are discovered, this function should forward the events
     *          to their respective services.
     *
     * @param[in] p_event  Pointer to the database discovery event.
     */
    static void db_disc_handler(ble_db_discovery_evt_t * p_evt)
    {
        ble_nus_c_on_db_disc_evt(&m_ble_nus_c, p_evt);
    }
    
    /**@brief   Function for handling app_uart events.
     *
     * @details This function will receive a single character from the app_uart module and append it to
     *          a string. The string will be be sent over BLE when the last character received was a
     *          'new line' i.e '\r\n' (hex 0x0D) or if the string has reached a length of
     *          @ref NUS_MAX_DATA_LENGTH.
     */
    void uart_event_handle(app_uart_evt_t * p_event)
    {
        static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
        static uint8_t index = 0;
    
        switch (p_event->evt_type)
        {
            /**@snippet [Handling data from UART] */
            case APP_UART_DATA_READY:
                UNUSED_VARIABLE(app_uart_get(&data_array[index]));
                index++;
    
                if ((data_array[index - 1] == '\n') || (index >= (BLE_NUS_MAX_DATA_LEN)))
                {
                    while (ble_nus_c_string_send(&m_ble_nus_c, data_array, index) != NRF_SUCCESS)
                    {
                        // repeat until sent.
                    }
                    index = 0;
                }
                break;
            /**@snippet [Handling data from UART] */
            case APP_UART_COMMUNICATION_ERROR:
                APP_ERROR_HANDLER(p_event->data.error_communication);
                break;
    
            case APP_UART_FIFO_ERROR:
                APP_ERROR_HANDLER(p_event->data.error_code);
                break;
    
            default:
                break;
        }
    }
    
    /**
     * @brief Parameters used when scanning.
     */
    static const ble_gap_scan_params_t m_scan_params =
    {
        .active   = 1,
        .interval = SCAN_INTERVAL,
        .window   = SCAN_WINDOW,
        .timeout  = SCAN_TIMEOUT,
        #if (NRF_SD_BLE_API_VERSION == 2)
            .selective   = 0,
            .p_whitelist = NULL,
        #endif
        #if (NRF_SD_BLE_API_VERSION == 3)
            .use_whitelist = 0,
        #endif
    };
    
    static void scan_start(void)
    {
        ret_code_t ret;
    
        ret = sd_ble_gap_scan_start(&m_scan_params);
        APP_ERROR_CHECK(ret);
    
        ret = bsp_indication_set(BSP_INDICATE_SCANNING);
        APP_ERROR_CHECK(ret);
    }
    
    
    
    /**@brief Callback handling NUS Client events.
     *
     * @details This function is called to notify the application of NUS client events.
     *
     * @param[in]   p_ble_nus_c   NUS Client Handle. This identifies the NUS client
     * @param[in]   p_ble_nus_evt Pointer to the NUS Client event.
     */
    
    /**@snippet [Handling events from the ble_nus_c module] */
    static void ble_nus_c_evt_handler(ble_nus_c_t * p_ble_nus_c, const ble_nus_c_evt_t * p_ble_nus_evt)
    {
        uint32_t err_code;
        switch (p_ble_nus_evt->evt_type)
        {
            case BLE_NUS_C_EVT_DISCOVERY_COMPLETE:
                err_code = ble_nus_c_handles_assign(p_ble_nus_c, p_ble_nus_evt->conn_handle, &p_ble_nus_evt->handles);
                APP_ERROR_CHECK(err_code);
    
                err_code = ble_nus_c_rx_notif_enable(p_ble_nus_c);
                APP_ERROR_CHECK(err_code);
                printf("The device has the Nordic UART Service\r\n");
                break;
    
            case BLE_NUS_C_EVT_NUS_RX_EVT:
                for (uint32_t i = 0; i < p_ble_nus_evt->data_len; i++)
                {
                    while (app_uart_put( p_ble_nus_evt->p_data[i]) != NRF_SUCCESS);
                }
                break;
    
            case BLE_NUS_C_EVT_DISCONNECTED:
                printf("Disconnected\r\n");
                scan_start();
                break;
        }
    }
    
    
    /**@brief Reads an advertising report and checks if a uuid is present in the service list.
     *
     * @details The function is able to search for 16-bit, 32-bit and 128-bit service uuids.
     *          To see the format of a advertisement packet, see
     *          https://www.bluetooth.org/Technical/AssignedNumbers/generic_access_profile.htm
     *
     * @param[in]   p_target_uuid The uuid to search fir
     * @param[in]   p_adv_report  Pointer to the advertisement report.
     *
     * @retval      true if the UUID is present in the advertisement report. Otherwise false
     */
    static bool is_uuid_present(const ble_uuid_t *p_target_uuid,
                                const ble_gap_evt_adv_report_t *p_adv_report)
    {
        uint32_t err_code;
        uint32_t index = 0;
        uint8_t *p_data = (uint8_t *)p_adv_report->data;
        ble_uuid_t extracted_uuid;
    
        while (index < p_adv_report->dlen)
        {
            uint8_t field_length = p_data[index];
            uint8_t field_type   = p_data[index + 1];
    
            if ( (field_type == BLE_GAP_AD_TYPE_16BIT_SERVICE_UUID_MORE_AVAILABLE)
               || (field_type == BLE_GAP_AD_TYPE_16BIT_SERVICE_UUID_COMPLETE)
               )
            {
                for (uint32_t u_index = 0; u_index < (field_length / UUID16_SIZE); u_index++)
                {
                    err_code = sd_ble_uuid_decode(  UUID16_SIZE,
                                                    &p_data[u_index * UUID16_SIZE + index + 2],
                                                    &extracted_uuid);
                    if (err_code == NRF_SUCCESS)
                    {
                        if ((extracted_uuid.uuid == p_target_uuid->uuid)
                            && (extracted_uuid.type == p_target_uuid->type))
                        {
                            return true;
                        }
                    }
                }
            }
    
            else if ( (field_type == BLE_GAP_AD_TYPE_32BIT_SERVICE_UUID_MORE_AVAILABLE)
                    || (field_type == BLE_GAP_AD_TYPE_32BIT_SERVICE_UUID_COMPLETE)
                    )
            {
                for (uint32_t u_index = 0; u_index < (field_length / UUID32_SIZE); u_index++)
                {
                    err_code = sd_ble_uuid_decode(UUID16_SIZE,
                    &p_data[u_index * UUID32_SIZE + index + 2],
                    &extracted_uuid);
                    if (err_code == NRF_SUCCESS)
                    {
                        if ((extracted_uuid.uuid == p_target_uuid->uuid)
                            && (extracted_uuid.type == p_target_uuid->type))
                        {
                            return true;
                        }
                    }
                }
            }
    
            else if ( (field_type == BLE_GAP_AD_TYPE_128BIT_SERVICE_UUID_MORE_AVAILABLE)
                    || (field_type == BLE_GAP_AD_TYPE_128BIT_SERVICE_UUID_COMPLETE)
                    )
            {
                err_code = sd_ble_uuid_decode(UUID128_SIZE,
                                              &p_data[index + 2],
                                              &extracted_uuid);
                if (err_code == NRF_SUCCESS)
                {
                    if ((extracted_uuid.uuid == p_target_uuid->uuid)
                        && (extracted_uuid.type == p_target_uuid->type))
                    {
                        return true;
                    }
                }
            }
            index += field_length + 1;
        }
        return false;
    }
    
    
    /**@brief Function for initializing the NUS Client.
     */
    static void nus_c_init(void)
    {
        uint32_t         err_code;
        ble_nus_c_init_t nus_c_init_t;
    
        nus_c_init_t.evt_handler = ble_nus_c_evt_handler;
    
        err_code = ble_nus_c_init(&m_ble_nus_c, &nus_c_init_t);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /** @brief Function for initializing the Database Discovery Module.
     */
    static void db_discovery_init(void)
    {
        uint32_t err_code = ble_db_discovery_init(db_disc_handler);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for the Timer initialization.
     *
     * @details Initializes the timer module. This creates and starts application timers.
     */
    static void timers_init(void)
    {
    //    uint32_t err_code;
    
        // Initialize timer module.
        APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);
    
        // 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);
    
        err_code = app_timer_create(&m_heart_rate_timer_id,
                                    APP_TIMER_MODE_REPEATED,
                                    heart_rate_meas_timeout_handler);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_create(&m_rr_interval_timer_id,
                                    APP_TIMER_MODE_REPEATED,
                                    rr_interval_timeout_handler);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_create(&m_sensor_contact_timer_id,
                                    APP_TIMER_MODE_REPEATED,
                                    sensor_contact_detected_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)
    {
        uint32_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_HEART_RATE_SENSOR_HEART_RATE_BELT);
        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);
    }
    
    
    #ifdef BLE_DFU_APP_SUPPORT
    /**@brief Function for stopping advertising.
     */
    static void advertising_stop(void)
    {
        uint32_t err_code;
    
        err_code = sd_ble_gap_adv_stop();
        APP_ERROR_CHECK(err_code);
    
        err_code = bsp_indication_set(BSP_INDICATE_IDLE);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for loading application-specific context after establishing a secure connection.
     *
     * @details This function will load the application context and check if the ATT table is marked as
     *          changed. If the ATT table is marked as changed, a Service Changed Indication
     *          is sent to the peer if the Service Changed CCCD is set to indicate.
     *
     * @param[in] p_handle The Device Manager handle that identifies the connection for which the context
     *                     should be loaded.
     */
    static void app_context_load(dm_handle_t const * p_handle)
    {
        uint32_t                 err_code;
        static uint32_t          context_data;
        dm_application_context_t context;
    
        context.len    = sizeof(context_data);
        context.p_data = (uint8_t *)&context_data;
    
        err_code = dm_application_context_get(p_handle, &context);
        if (err_code == NRF_SUCCESS)
        {
            // Send Service Changed Indication if ATT table has changed.
            if ((context_data & (DFU_APP_ATT_TABLE_CHANGED << DFU_APP_ATT_TABLE_POS)) != 0)
            {
                err_code = sd_ble_gatts_service_changed(m_conn_handle, APP_SERVICE_HANDLE_START, BLE_HANDLE_MAX);
                if ((err_code != NRF_SUCCESS) &&
                    (err_code != BLE_ERROR_INVALID_CONN_HANDLE) &&
                    (err_code != NRF_ERROR_INVALID_STATE) &&
                    (err_code != BLE_ERROR_NO_TX_PACKETS) &&
                    (err_code != NRF_ERROR_BUSY) &&
                    (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING))
                {
                    APP_ERROR_HANDLER(err_code);
                }
            }
    
            err_code = dm_application_context_delete(p_handle);
            APP_ERROR_CHECK(err_code);
        }
        else if (err_code == DM_NO_APP_CONTEXT)
        {
            // No context available. Ignore.
        }
        else
        {
            APP_ERROR_HANDLER(err_code);
        }
    }
    
    
    /** @snippet [DFU BLE Reset prepare] */
    /**@brief Function for preparing for system reset.
     *
     * @details This function implements @ref dfu_app_reset_prepare_t. It will be called by
     *          @ref dfu_app_handler.c before entering the bootloader/DFU.
     *          This allows the current running application to shut down gracefully.
     */
    static void reset_prepare(void)
    {
        uint32_t err_code;
    
        if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
        {
            // Disconnect from peer.
            err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
            APP_ERROR_CHECK(err_code);
            err_code = bsp_indication_set(BSP_INDICATE_IDLE);
            APP_ERROR_CHECK(err_code);
        }
        else
        {
            // If not connected, the device will be advertising. Hence stop the advertising.
            advertising_stop();
        }
    
        err_code = ble_conn_params_stop();
        APP_ERROR_CHECK(err_code);
    
        nrf_delay_ms(500);
    }
    /** @snippet [DFU BLE Reset prepare] */
    #endif // BLE_DFU_APP_SUPPORT
    
    
    /**@brief Function for initializing services that will be used by the application.
     *
     * @details Initialize the Heart Rate, Battery and Device Information services.
     */
    static void services_init(void)
    {
        uint32_t       err_code;
       
    
    
      
      
    #ifdef BLE_DFU_APP_SUPPORT
        /** @snippet [DFU BLE Service initialization] */
        ble_dfu_init_t   dfus_init;
    
        // Initialize the Device Firmware Update Service.
        memset(&dfus_init, 0, sizeof(dfus_init));
    
        dfus_init.evt_handler   = dfu_app_on_dfu_evt;
        dfus_init.error_handler = NULL;
        dfus_init.evt_handler   = dfu_app_on_dfu_evt;
        dfus_init.revision      = DFU_REVISION;
    
        err_code = ble_dfu_init(&m_dfus, &dfus_init);
        APP_ERROR_CHECK(err_code);
    
        dfu_app_reset_prepare_set(reset_prepare);
        //dfu_app_dm_appl_instance_set(m_app_handle); //pemy
        /** @snippet [DFU BLE Service initialization] */
    #endif // BLE_DFU_APP_SUPPORT
    }
    
    
    /**@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);
    
        m_heart_rate_sim_cfg.min          = MIN_HEART_RATE;
        m_heart_rate_sim_cfg.max          = MAX_HEART_RATE;
        m_heart_rate_sim_cfg.incr         = HEART_RATE_INCREMENT;
        m_heart_rate_sim_cfg.start_at_max = false;
    
        sensorsim_init(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);
    
        m_rr_interval_sim_cfg.min          = MIN_RR_INTERVAL;
        m_rr_interval_sim_cfg.max          = MAX_RR_INTERVAL;
        m_rr_interval_sim_cfg.incr         = RR_INTERVAL_INCREMENT;
        m_rr_interval_sim_cfg.start_at_max = false;
    
        sensorsim_init(&m_rr_interval_sim_state, &m_rr_interval_sim_cfg);
    }*/
    
    
    /**@brief Function for starting application timers.
     */
    static void application_timers_start(void)
    {
        /*uint32_t err_code;
    
        // Start application timers.
        err_code = app_timer_start(m_battery_timer_id, BATTERY_LEVEL_MEAS_INTERVAL, NULL);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_start(m_heart_rate_timer_id, HEART_RATE_MEAS_INTERVAL, NULL);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_start(m_rr_interval_timer_id, RR_INTERVAL_INTERVAL, NULL);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_start(m_sensor_contact_timer_id, SENSOR_CONTACT_DETECTED_INTERVAL, 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)
    {
        uint32_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)
    {
        uint32_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_hrs.hrm_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)
    {
        uint32_t 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)
    {
        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;
        }
    }
    /**@brief Function for initializing the UART.
     */
    static void uart_init(void)
    {
        uint32_t err_code;
    
        const app_uart_comm_params_t comm_params =
          {
            .rx_pin_no    = RX_PIN_NUMBER,
            .tx_pin_no    = TX_PIN_NUMBER,
            .rts_pin_no   = RTS_PIN_NUMBER,
            .cts_pin_no   = CTS_PIN_NUMBER,
            .flow_control = APP_UART_FLOW_CONTROL_ENABLED,
            .use_parity   = false,
            .baud_rate    = UART_BAUDRATE_BAUDRATE_Baud115200
          };
    
        APP_UART_FIFO_INIT(&comm_params,
                            UART_RX_BUF_SIZE,
                            UART_TX_BUF_SIZE,
                            uart_event_handle,
                            APP_IRQ_PRIORITY_LOWEST,
                            err_code);
    
        APP_ERROR_CHECK(err_code);
    }
    
    /**@brief Function for handling the Application's BLE Stack events.
     *
     * @param[in] p_ble_evt  Bluetooth stack event.
     */
    /*static void on_ble_evt(ble_evt_t * p_ble_evt)
    {
        uint32_t err_code;
    
        switch (p_ble_evt->header.evt_id)
                {
            case BLE_GAP_EVT_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;
                break;
    
            case BLE_GAP_EVT_DISCONNECTED:
                m_conn_handle = BLE_CONN_HANDLE_INVALID;
                break;
    
            default:
                // No implementation needed.
                break;
        }
    }*/
    
    
    static void on_ble_evt(ble_evt_t * p_ble_evt)
    {
        uint32_t              err_code;
        const ble_gap_evt_t * p_gap_evt = &p_ble_evt->evt.gap_evt;
    
        switch (p_ble_evt->header.evt_id)
        {
            case BLE_GAP_EVT_ADV_REPORT:
            {
                const ble_gap_evt_adv_report_t * p_adv_report = &p_gap_evt->params.adv_report;
    
                if (is_uuid_present(&m_nus_uuid, p_adv_report))
                {
    
                    err_code = sd_ble_gap_connect(&p_adv_report->peer_addr,
                                                  &m_scan_params,
                                                  &m_connection_param);
    
                    if (err_code == NRF_SUCCESS)
                    {
                        // scan is automatically stopped by the connect
                        err_code = bsp_indication_set(BSP_INDICATE_IDLE);
                        APP_ERROR_CHECK(err_code);
                        printf("Connecting to target %02x%02x%02x%02x%02x%02x\r\n",
                                 p_adv_report->peer_addr.addr[0],
                                 p_adv_report->peer_addr.addr[1],
                                 p_adv_report->peer_addr.addr[2],
                                 p_adv_report->peer_addr.addr[3],
                                 p_adv_report->peer_addr.addr[4],
                                 p_adv_report->peer_addr.addr[5]
                                 );
                    }
                }
            }break; // BLE_GAP_EVT_ADV_REPORT
    
            case BLE_GAP_EVT_CONNECTED:
                //NRF_LOG_DEBUG("Connected to target\r\n");
                err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
                APP_ERROR_CHECK(err_code);
    
                // start discovery of services. The NUS Client waits for a discovery result
                err_code = ble_db_discovery_start(&m_ble_db_discovery, p_ble_evt->evt.gap_evt.conn_handle);
                APP_ERROR_CHECK(err_code);
                break; // BLE_GAP_EVT_CONNECTED
    
            case BLE_GAP_EVT_TIMEOUT:
                if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_SCAN)
                {
                    //NRF_LOG_DEBUG("Scan timed out.\r\n");
                    scan_start();
                }
                else if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN)
                {
                    printf("Connection Request timed out.\r\n");
                }
                break; // BLE_GAP_EVT_TIMEOUT
    
            case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
                // Pairing not supported
                err_code = sd_ble_gap_sec_params_reply(p_ble_evt->evt.gap_evt.conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
                APP_ERROR_CHECK(err_code);
                break; // BLE_GAP_EVT_SEC_PARAMS_REQUEST
    
            case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
                // Accepting parameters requested by peer.
                err_code = sd_ble_gap_conn_param_update(p_gap_evt->conn_handle,
                                                        &p_gap_evt->params.conn_param_update_request.conn_params);
                APP_ERROR_CHECK(err_code);
                break; // BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST
    
            case BLE_GATTC_EVT_TIMEOUT:
                // Disconnect on GATT Client timeout event.
                //NRF_LOG_DEBUG("GATT Client Timeout.\r\n");
                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; // BLE_GATTC_EVT_TIMEOUT
    
            case BLE_GATTS_EVT_TIMEOUT:
                // Disconnect on GATT Server timeout event.
                //NRF_LOG_DEBUG("GATT Server Timeout.\r\n");
                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; // BLE_GATTS_EVT_TIMEOUT
    
    #if (NRF_SD_BLE_API_VERSION == 3)
            case BLE_GATTS_EVT_EXCHANGE_MTU_REQUEST:
                err_code = sd_ble_gatts_exchange_mtu_reply(p_ble_evt->evt.gatts_evt.conn_handle,
                                                           NRF_BLE_MAX_MTU_SIZE);
                APP_ERROR_CHECK(err_code);
                break; // BLE_GATTS_EVT_EXCHANGE_MTU_REQUEST
    #endif
    
            default:
                break;
        }
    }
    
    /**@brief Function for dispatching a BLE stack event to all modules with a BLE stack event handler.
     *
     * @details This function is called from the BLE Stack event interrupt handler after a BLE stack
     *          event has been received.
     *
     * @param[in] p_ble_evt  Bluetooth stack event.
     */
    static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
    {
        dm_ble_evt_handler(p_ble_evt); //pemy
       
        ble_conn_params_on_ble_evt(p_ble_evt);
        bsp_btn_ble_on_ble_evt(p_ble_evt);
    #ifdef BLE_DFU_APP_SUPPORT
        /** @snippet [Propagating BLE Stack events to DFU Service] */
        ble_dfu_on_ble_evt(&m_dfus, p_ble_evt);
        /** @snippet [Propagating BLE Stack events to DFU Service] */
    #endif // BLE_DFU_APP_SUPPORT
        on_ble_evt(p_ble_evt);
        ble_advertising_on_ble_evt(p_ble_evt);
    	  ble_db_discovery_on_ble_evt(&m_ble_db_discovery, p_ble_evt);
        ble_nus_c_on_ble_evt(&m_ble_nus_c,p_ble_evt);
    }
    
    
    
    /**@brief Function for dispatching a system event to interested modules.
     *
     * @details This function is called from the System event interrupt handler after a system
     *          event has been received.
     *
     * @param[in] sys_evt  System stack event.
     */
    static void sys_evt_dispatch(uint32_t sys_evt)
    {
        pstorage_sys_event_handler(sys_evt);
        ble_advertising_on_sys_evt(sys_evt);
    }
    
    
    /**@brief Function for initializing the BLE stack.
     *
     * @details Initializes the SoftDevice and the BLE event interrupt.
     */
    static void ble_stack_init(void)
    {
        uint32_t err_code;
        
        nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
        
        // Initialize the SoftDevice handler module.	
        SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);
    
        ble_enable_params_t ble_enable_params;
        err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
                                                        PERIPHERAL_LINK_COUNT,
                                                        &ble_enable_params);
        APP_ERROR_CHECK(err_code);
    
    #ifdef BLE_DFU_APP_SUPPORT
        ble_enable_params.gatts_enable_params.service_changed = 1;
    #endif // BLE_DFU_APP_SUPPORT
        //Check the ram settings against the used number of links
        CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT,PERIPHERAL_LINK_COUNT);
    
        // Enable BLE stack.
        err_code = softdevice_enable(&ble_enable_params);
        APP_ERROR_CHECK(err_code);
    
        // Register with the SoftDevice handler module for BLE events.
        err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
        APP_ERROR_CHECK(err_code);
    
        // Register with the SoftDevice handler module for BLE events.
        err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for handling events from the BSP module.
     *
     * @param[in]   event   Event generated by button press.
     */
    void bsp_event_handler(bsp_event_t event)
    {
        uint32_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:
                err_code = ble_advertising_restart_without_whitelist();
                if (err_code != NRF_ERROR_INVALID_STATE)
                {
                    APP_ERROR_CHECK(err_code);
                }
                break;
    
            default:
                break;
        }
    }
    
    
    /**@brief Function for handling the Device Manager events.
     *
     * @param[in] p_evt  Data associated to the device manager event.
     */
    static uint32_t device_manager_evt_handler(dm_handle_t const * p_handle,
                                               dm_event_t const  * p_event,
                                               ret_code_t        event_result)
    {
        APP_ERROR_CHECK(event_result);
    
    #ifdef BLE_DFU_APP_SUPPORT
        if (p_event->event_id == DM_EVT_LINK_SECURED)
        {
            app_context_load(p_handle);
        }
    #endif // BLE_DFU_APP_SUPPORT
    
        return NRF_SUCCESS;
    }
    
    
    /**@brief Function for the Device Manager initialization.
     *
     * @param[in] erase_bonds  Indicates whether bonding information should be cleared from
     *                         persistent storage during initialization of the Device Manager.
     */
    static void device_manager_init(bool erase_bonds)
    {
        uint32_t               err_code;
        dm_init_param_t        init_param = {.clear_persistent_data = erase_bonds};
        dm_application_param_t register_param;
    
        // Initialize persistent storage module.
        err_code = pstorage_init();
        APP_ERROR_CHECK(err_code);
    
        err_code = dm_init(&init_param);
        APP_ERROR_CHECK(err_code);
    
        memset(&register_param.sec_param, 0, sizeof(ble_gap_sec_params_t));
    
        register_param.sec_param.bond         = SEC_PARAM_BOND;
        register_param.sec_param.mitm         = SEC_PARAM_MITM;
        register_param.sec_param.lesc         = SEC_PARAM_LESC;
        register_param.sec_param.keypress     = SEC_PARAM_KEYPRESS;
        register_param.sec_param.io_caps      = SEC_PARAM_IO_CAPABILITIES;
        register_param.sec_param.oob          = SEC_PARAM_OOB;
        register_param.sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
        register_param.sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
        register_param.evt_handler            = device_manager_evt_handler;
        register_param.service_type           = DM_PROTOCOL_CNTXT_GATT_SRVR_ID;
    
        err_code = dm_register(&m_app_handle, &register_param);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for initializing the Advertising functionality.
     */
    static void advertising_init(void)
    {
        uint32_t      err_code;
        ble_advdata_t advdata;
    
        // Build advertising data struct to pass into @ref ble_advertising_init.
        memset(&advdata, 0, sizeof(advdata));
    
        advdata.name_type               = BLE_ADVDATA_FULL_NAME;
        advdata.include_appearance      = true;
        advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
        advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
        advdata.uuids_complete.p_uuids  = m_adv_uuids;
    
        ble_adv_modes_config_t options = {0};
        options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
        options.ble_adv_fast_interval = APP_ADV_INTERVAL;
        options.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;
    
        err_code = ble_advertising_init(&advdata, NULL, &options, on_adv_evt, NULL);
        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(void)
    {
        bsp_event_t startup_event;
    
        uint32_t err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS,
                                     APP_TIMER_TICKS(100, APP_TIMER_PRESCALER),
                                     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 the Power manager.
     */
    static void power_manage(void)
    {
        uint32_t err_code = sd_app_evt_wait();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for application main entry.
     */
    int main(void)
    {
        uint32_t err_code;
        bool erase_bonds;
    
        // Initialize.
    
        app_trace_init();
        timers_init();
    	 
        buttons_leds_init();
    	  db_discovery_init();
        ble_stack_init();
    	   
        device_manager_init(erase_bonds); //pemy
    	  uart_init();
        gap_params_init();
        advertising_init();
    	  services_init();
    	  nus_c_init();
    	  //
       
       // sensor_simulator_init();
        conn_params_init();
    
        // Start execution.
        application_timers_start();
        err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
        APP_ERROR_CHECK(err_code);
    
        // Enter main loop.
        for (;;)
        {
            power_manage();
        }
    }
    
    

    I am just want to take beacon data by scanner simple using sdk11 /experimental scanner hrs as base.

  • yes, I see. But beacon_scanner.c isn't included in the project that you sent. I would like to see how you have included and initialized/started the scanning for beacons.

    BR,

    Edvin

  • ok I have  attached the code please copy the project folder in \nRF5_SDK_11.0.0_89\examples\ble_peripheral\ble_app_hrsfolder .I just copied beacon_scanner.c(scanner_beacon.c) file in my folder and added to application.

    pca10028.rar

    hope this help you.

  • A bit, but this folder doesn't include the main.c file. Can you zip the ble_app_hrs folder?

Reply Children
  • Ok. I used the pca10028\s130_with_dfu\arm5_no_packs, as it was the one I found that was closest to compiling without error, but I had to add the path to ble_db_discovery.h, so I just want to check with you that I used the correct project?

    After that it compiled, but nus_c_init returns 0x04, because it didn't have space for the NUS service. So am I using the correct project?

    After commenting out nus_c_init() the application runs, and I can see the advertisements, but still I can't see your beacon_evt_handler() in your project. The one that you described in a previous reply:

    static void beacon_evt_handler(ble_scan_beacon_evt_t * p_evt)
    {
        uint32_t err_code;
    	// const ble_gap_evt_t * p_gap_evt = &p_evt->evt.gap_evt;
    	// const ble_gap_evt_adv_report_t * p_adv_report = &p_gap_evt->params.adv_report;
    
        if((p_evt->rcv_adv_packet.adv_data.major    == SEARCHED_MAJOR)
         &&(p_evt->rcv_adv_packet.adv_data.minor    == SEARCHED_MINOR)
         &&(p_evt->rcv_adv_packet.adv_data.manuf_id == APP_COMPANY_IDENTIFIER))
        {
    			
    			  printf("\nMAJOR=0x %02x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.major);
    			  printf("\nMINOR=0x%02x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.minor);
    			  printf("\nNordicid=0x%02x\n",(uint8_t)p_evt->rcv_adv_packet.adv_data.manuf_id);
    			  printf("\nrssi=-0x%02x\n",(uint8_t)p_evt->rcv_adv_packet.adv_data.rssi);
    			  printf("\nuuid=%d\n",p_evt->rcv_adv_packet.adv_data.uuid);
    			  printf("Connecting to target %02x%02x%02x%02x%02x%02x\r\n",
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[5],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[4],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[3],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[2],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[1],
    			                    (uint8_t) p_evt->rcv_adv_packet.addr.addr[0]);
    			
                                 
    			  
            err_code = bsp_indication_set(BSP_INDICATE_ALERT_3);
            APP_ERROR_CHECK(err_code);
        }
    }

  • yes Edvin,

    That is different project which used hrs_scanner example.

    Here in above project I am scanning using the central nus_c service.

    hrs_scanner.rar

    this project has the beacon_evt_handler()  function its location

    nRF5_SDK_11.0.0\examples\ble_peripheral\experimental_ble_app_multiactivity_beacon\hrs_scanner

    How can I make space for service using service inti with memloc() function?

    Thanks for your effort

  • Ok. I see. Well. Thank you for sending the correct project Slight smile

    The scanner_beacon.c/h doesn't actually forward the address to the beacon_evt_handler() in main.c. If you see in the app_beacon_on_ble_evt, you can see that it creates the event that is forwarded to the main scanning interrupt handler. It only decodes the MINOR and MAJOR values, in addition to the uuid.

    I did a few modifications to your project. Now it forwards the RSSI and the address to the beacon_evt_handler() in main.c.

    Attached is the main.c file, the scanner_beacon.h and scanner_beacon.c that I changed.

    /* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
     *
     * The information contained herein is property of Nordic Semiconductor ASA.
     * Terms and conditions of usage are described in detail in NORDIC
     * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
     *
     * Licensees are granted free, non-transferable use of the information. NO
     * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
     * the file.
     *
     */
    #include "scanner_beacon.h"
    #include <stdio.h>
    #include <string.h>
    
    #include "app_error.h"
    #include "app_util.h"
    
    
    #define SCAN_INTERVAL_MS  100
    #define WINDOW_LEN_MS    (SCAN_INTERVAL_MS / 4)
    #define MAX_ADV_PACK_LEN (BLE_GAP_ADV_MAX_SIZE + BLE_GAP_ADDR_LEN + 2)
    #define ADV_TYPE_LEN      2
    #define BEACON_DATA_LEN   21
    
    
    
    static struct
    {
        ble_scan_beacon_evt_handler_t evt_handler;
        ble_srv_error_handler_t       error_handler;                      /**< Function to be called in case of an error. */
        ble_gap_scan_params_t         scan_params;
    } m_beacon_scanner;
    
    static void decode_ad_type_flags(uint8_t *buffer, uint8_t len, adv_packet_t *adv_packet)
    {
        int i = 1;
        adv_packet->gap_ad_flags = buffer[i];
    }
    
    
    static void decode_ad_manuf_spec_data(uint8_t *buffer, uint8_t len, adv_packet_t *adv_packet)
    {
        int i = 1;
        adv_packet->adv_data.manuf_id = uint16_decode(&buffer[i]);
        i += sizeof(uint16_t);
        adv_packet->adv_data.beacon_dev_type = buffer[i++];
        uint8_t data_len = buffer[i++];
        if (data_len == BEACON_DATA_LEN)
        {
            memcpy(&adv_packet->adv_data.uuid, &buffer[i], sizeof(ble_uuid128_t));
            i += sizeof(ble_uuid128_t);
            adv_packet->adv_data.major = uint16_decode(&buffer[i]);
    			//  i += sizeof(ble_gap_addr_t);
           // adv_packet->adv_data.peer_addr = uint48_encode(&buffer[i],&buffer1[i]);
    			  
            i += sizeof(uint16_t);
            adv_packet->adv_data.minor = uint16_decode(&buffer[i]);
            i += sizeof(uint16_t);
            adv_packet->adv_data.rssi = uint16_decode(&buffer[i]);
    			  i += sizeof(ble_uuid128_t);
        }
        else
        {
            memset(&adv_packet->adv_data.uuid, 0, sizeof(ble_uuid128_t));
            adv_packet->adv_data.major = 0;
            adv_packet->adv_data.minor = 0;
            adv_packet->adv_data.rssi = 0;
        }
    }
    
    
    static uint32_t decode_advertising(uint8_t *buffer, uint8_t buffer_len, adv_packet_t *adv_packet)
    {
        uint8_t i = 0; 
        
        do
        {
            uint8_t field_len = buffer[i++];
            if(buffer[i] == BLE_GAP_AD_TYPE_FLAGS)
            {
                if (field_len != ADV_TYPE_LEN)
                {
                    return NRF_ERROR_NOT_FOUND;
                }
                decode_ad_type_flags(&buffer[i], field_len, adv_packet);
                i += field_len;
            }
            else if (buffer[i] == BLE_GAP_AD_TYPE_MANUFACTURER_SPECIFIC_DATA)
            {
                decode_ad_manuf_spec_data(&buffer[i], field_len, adv_packet);
                i += field_len;
            }
        }while( i < buffer_len);
    
        return NRF_SUCCESS;    
    }
    
    
    void app_beacon_scanner_on_sys_evt(uint32_t event)
    {
        // no implementation needed
    }
    
    void app_beacon_scanner_on_ble_evt(ble_evt_t * p_ble_evt)
    {
        if (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_REPORT)
        {
            ble_scan_beacon_evt_t evt;
            uint32_t err_code = decode_advertising(p_ble_evt->evt.gap_evt.params.adv_report.data, p_ble_evt->evt.gap_evt.params.adv_report.dlen, &evt.rcv_adv_packet);
            evt.rcv_adv_packet.addr.addr[0] = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr[0];
            evt.rcv_adv_packet.addr.addr[1] = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr[1];
            evt.rcv_adv_packet.addr.addr[2] = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr[2];
            evt.rcv_adv_packet.addr.addr[3] = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr[3];
            evt.rcv_adv_packet.addr.addr[4] = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr[4];
            evt.rcv_adv_packet.addr.addr[5] = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr[5];
            evt.rcv_adv_packet.adv_data.rssi = p_ble_evt->evt.gap_evt.params.adv_report.rssi;
            if (err_code == NRF_SUCCESS)
            {
                if (m_beacon_scanner.evt_handler != NULL)
                {
                        evt.evt_type = BLE_SCAN_BEACON_ADVERTISER_FOUND;
                        m_beacon_scanner.evt_handler(&evt);
                }
            }
        }
    }
    
    void app_beacon_scanner_init(ble_beacon_scanner_init_t * p_init)
    {
        m_beacon_scanner.evt_handler = p_init->evt_handler;
        m_beacon_scanner.error_handler= p_init->error_handler;
        
        memset(&m_beacon_scanner.scan_params, 0, sizeof(m_beacon_scanner.scan_params));
        m_beacon_scanner.scan_params.active      = false;
        m_beacon_scanner.scan_params.selective   = false;
        m_beacon_scanner.scan_params.p_whitelist = NULL;
        m_beacon_scanner.scan_params.interval    = MSEC_TO_UNITS(SCAN_INTERVAL_MS, UNIT_0_625_MS); 
        m_beacon_scanner.scan_params.window      = MSEC_TO_UNITS(WINDOW_LEN_MS, UNIT_0_625_MS);    
        m_beacon_scanner.scan_params.timeout     = 0; // disable timeout
    }
    
    void app_beacon_scanner_start(void)
    {
        uint32_t err_code;
    
        err_code = sd_ble_gap_scan_start(&m_beacon_scanner.scan_params);
        if (err_code != NRF_SUCCESS)
        {
            if (m_beacon_scanner.error_handler != NULL)
            {
                m_beacon_scanner.error_handler(err_code);
            }
        }
    }
    
    void app_beacon_scanner_stop(void)
    {
        uint32_t err_code;
        
        err_code = sd_ble_gap_scan_stop();
        if (err_code != NRF_SUCCESS)
        {
            if (m_beacon_scanner.error_handler != NULL)
            {
                m_beacon_scanner.error_handler(err_code);
            }
        }
    }
    
    
    /* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
     *
     * The information contained herein is property of Nordic Semiconductor ASA.
     * Terms and conditions of usage are described in detail in NORDIC
     * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
     *
     * Licensees are granted free, non-transferable use of the information. NO
     * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
     * the file.
     *
     */
    /**
     * @brief Heart Rate Service Sample Application main file.
     *
     * This file contains the source code for a sample application using the Heart Rate service
     * (and also 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_hci.h"
    #include "ble_srv_common.h"
    #include "ble_advdata.h"
    #include "ble_advertising.h"
    #include "ble_bas.h"
    #include "ble_hrs.h"
    #include "ble_dis.h"
    #include "ble_conn_params.h"
    #include "bsp.h"
    #include "sensorsim.h"
    #include "bsp_btn_ble.h"
    #include "softdevice_handler.h"
    #include "app_timer.h"
    #include "device_manager.h"
    #include "pstorage.h"
    #include "app_trace.h"
    #include "scanner_beacon.h"
    #include "app_uart.h"
    
    uint8_t buffer1[48];
    uint64_t addra;
    #define IS_SRVC_CHANGED_CHARACT_PRESENT         0                                       /**< Include or not the service_changed characteristic. if not enabled, the server's database cannot be changed for the lifetime of the device*/
    
    #define CENTRAL_LINK_COUNT                      0                                       /**< Number of central links used by the application. When changing this number remember to adjust the RAM settings*/
    #define PERIPHERAL_LINK_COUNT                   1                                       /**< Number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/
    
    #define SEARCHED_MAJOR                          0x1200
    #define SEARCHED_MINOR                          0x3400
    #define APP_COMPANY_IDENTIFIER                  0x0059                                  /**< Company identifier for Nordic Semiconductor ASA. as per www.bluetooth.org. */
    
    /**@brief Function for handling a BeaconScanner event.
     *
     * @details This function will be called each time the scanner has found an advertiser with beacon data.
     *          In this simple implementation, it checks the Major and Minor and company ID fields from the beacon data,
     *          and if they match, @ref BSP_INDICATE_ALERT_3 is indicated. 
     *
     * @param[in]   p_evt   scanner event data.
     */
    static void beacon_evt_handler(ble_scan_beacon_evt_t * p_evt)
    {
        uint32_t err_code;
    	// const ble_gap_evt_t * p_gap_evt = &p_evt->evt.gap_evt;
    	// const ble_gap_evt_adv_report_t * p_adv_report = &p_gap_evt->params.adv_report;
    
        //if((p_evt->rcv_adv_packet.adv_data.major    == SEARCHED_MAJOR)
        // &&(p_evt->rcv_adv_packet.adv_data.minor    == SEARCHED_MINOR)
        // &&(p_evt->rcv_adv_packet.adv_data.manuf_id == APP_COMPANY_IDENTIFIER))
        if (p_evt->rcv_adv_packet.adv_data.manuf_id == APP_COMPANY_IDENTIFIER)
        {
    			
    			  printf("\nMAJOR=0x %04x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.major);
    			  printf("\nMINOR=0x%04x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.minor);
    			  printf("\nNordicid=0x%02x\n",(uint16_t)p_evt->rcv_adv_packet.adv_data.manuf_id);
    			  printf("\nrssi=%d\n", (int8_t)p_evt->rcv_adv_packet.adv_data.rssi);
                  
    			  //printf("\nuuid=%d\n",p_evt->rcv_adv_packet.adv_data.uuid);
                  printf("Connecting to target %02x:%02x:%02x:%02x:%02x:%02x\r\n",
                                    buffer1[0]=(uint8_t) p_evt->rcv_adv_packet.addr.addr[0],
                                    buffer1[1]=(uint8_t) p_evt->rcv_adv_packet.addr.addr[1],
                                    buffer1[2]=(uint8_t) p_evt->rcv_adv_packet.addr.addr[2],
                                    buffer1[3]=(uint8_t) p_evt->rcv_adv_packet.addr.addr[3],
                                    buffer1[4]=(uint8_t) p_evt->rcv_adv_packet.addr.addr[4],
                                    buffer1[5]=(uint8_t) p_evt->rcv_adv_packet.addr.addr[5]);
                  printf("Beacon uuid: 0x");
                  for (int i=0; i<16; i++)
                  {
                      printf("%02x:", p_evt->rcv_adv_packet.adv_data.uuid.uuid128[i]);
                  }
                  printf("\r\n");
    			
                                 
    			  
            err_code = bsp_indication_set(BSP_INDICATE_ALERT_3);
            APP_ERROR_CHECK(err_code);
        }
    }
    
    
    /**@brief Function for handling a BeaconScanner error.
     *
     * @param[in]   nrf_error   Error code containing information about what went wrong.
     */
    static void beacon_scanner_error_handler(uint32_t nrf_error)
    {
        APP_ERROR_HANDLER(nrf_error);
    }
    
    static ble_beacon_scanner_init_t m_beacon_scanner_init;
    /*end addition for beacon*/
    
    
    
    #define MAX_TEST_DATA_BYTES     (15U)                /**< max number of test bytes to be used for tx and rx. */
    #define UART_TX_BUF_SIZE 256                         /**< UART TX buffer size. */
    #define UART_RX_BUF_SIZE 1                           /**< UART RX buffer size. */
    
    
    
    void uart_error_handle(app_uart_evt_t * p_event)
    {
        if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
        {
            APP_ERROR_HANDLER(p_event->data.error_communication);
        }
        else if (p_event->evt_type == APP_UART_FIFO_ERROR)
        {
            APP_ERROR_HANDLER(p_event->data.error_code);
        }
    }
    
    
    void uart_inti()
    {
    	
    	  uint32_t err_code;
        const app_uart_comm_params_t comm_params =
          {
              RX_PIN_NUMBER,
              TX_PIN_NUMBER,
              RTS_PIN_NUMBER,
              CTS_PIN_NUMBER,
              APP_UART_FLOW_CONTROL_ENABLED,
              false,
              UART_BAUDRATE_BAUDRATE_Baud115200
          };
    
        APP_UART_FIFO_INIT(&comm_params,
                             UART_RX_BUF_SIZE,
                             UART_TX_BUF_SIZE,
                             uart_error_handle, // uart_error_handle,
                             APP_IRQ_PRIORITY_LOW,
                             err_code);
    
        APP_ERROR_CHECK(err_code);
    
        printf("\n\rStart: \n\r");
    
    }
    #define DEVICE_NAME                          "Nordic_HRM_sca"                               /**< Name of device. Will be included in the advertising data. */
    #define MANUFACTURER_NAME                    "NordicSemiconductor"                      /**< Manufacturer. Will be passed to Device Information Service. */
    #define APP_ADV_INTERVAL                     480                                         /**< The advertising interval (in units of 0.625 ms. This value corresponds to 300 ms). */
    #define APP_ADV_TIMEOUT_IN_SECONDS           180                                        /**< The advertising timeout in units of seconds. */
    
    #define APP_TIMER_PRESCALER                  0                                          /**< Value of the RTC1 PRESCALER register. */
    #define APP_TIMER_OP_QUEUE_SIZE              4                                          /**< Size of timer operation queues. */
    
    #define BATTERY_LEVEL_MEAS_INTERVAL          APP_TIMER_TICKS(2000, APP_TIMER_PRESCALER) /**< Battery level measurement interval (ticks). */
    #define MIN_BATTERY_LEVEL                    81                                         /**< Minimum simulated battery level. */
    #define MAX_BATTERY_LEVEL                    100                                        /**< Maximum simulated battery level. */
    #define BATTERY_LEVEL_INCREMENT              1                                          /**< Increment between each simulated battery level measurement. */
    
    #define HEART_RATE_MEAS_INTERVAL             APP_TIMER_TICKS(1000, APP_TIMER_PRESCALER) /**< Heart rate measurement interval (ticks). */
    #define MIN_HEART_RATE                       140                                        /**< Minimum heart rate as returned by the simulated measurement function. */
    #define MAX_HEART_RATE                       300                                        /**< Maximum heart rate as returned by the simulated measurement function. */
    #define HEART_RATE_INCREMENT                 10                                         /**< Value by which the heart rate is incremented/decremented for each call to the simulated measurement function. */
    
    #define RR_INTERVAL_INTERVAL                 APP_TIMER_TICKS(300, APP_TIMER_PRESCALER)  /**< RR interval interval (ticks). */
    #define MIN_RR_INTERVAL                      100                                        /**< Minimum RR interval as returned by the simulated measurement function. */
    #define MAX_RR_INTERVAL                      500                                        /**< Maximum RR interval as returned by the simulated measurement function. */
    #define RR_INTERVAL_INCREMENT                1                                          /**< Value by which the RR interval is incremented/decremented for each call to the simulated measurement function. */
    
    #define SENSOR_CONTACT_DETECTED_INTERVAL     APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER) /**< Sensor Contact Detected toggle interval (ticks). */
    
    #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, APP_TIMER_PRESCALER) /**< 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, APP_TIMER_PRESCALER)/**< 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. */
    
    static uint16_t                              m_conn_handle = BLE_CONN_HANDLE_INVALID;   /**< Handle of the current connection. */
    static ble_bas_t                             m_bas;                                     /**< Structure used to identify the battery service. */
    static ble_hrs_t                             m_hrs;                                     /**< Structure used to identify the heart rate service. */
    static bool                                  m_rr_interval_enabled = true;              /**< Flag for enabling and disabling the registration of new RR interval measurements (the purpose of disabling this is just to test sending HRM without RR interval data. */
    
    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_heart_rate_sim_cfg;                      /**< Heart Rate sensor simulator configuration. */
    static sensorsim_state_t                     m_heart_rate_sim_state;                    /**< Heart Rate sensor simulator state. */
    static sensorsim_cfg_t                       m_rr_interval_sim_cfg;                     /**< RR Interval sensor simulator configuration. */
    static sensorsim_state_t                     m_rr_interval_sim_state;                   /**< RR Interval sensor simulator state. */
    
    APP_TIMER_DEF(m_battery_timer_id);                                                      /**< Battery timer. */
    APP_TIMER_DEF(m_heart_rate_timer_id);                                                   /**< Heart rate measurement timer. */
    APP_TIMER_DEF(m_rr_interval_timer_id);                                                  /**< RR interval timer. */
    APP_TIMER_DEF(m_sensor_contact_timer_id);                                               /**< Sensor contact detected timer. */
    
    static dm_application_instance_t             m_app_handle;                              /**< Application identifier allocated by device manager */
    
    static ble_uuid_t m_adv_uuids[] =                                                       /**< Universally unique service identifiers. */
    {
        {BLE_UUID_HEART_RATE_SERVICE,         BLE_UUID_TYPE_BLE},
        {BLE_UUID_BATTERY_SERVICE,            BLE_UUID_TYPE_BLE},
        {BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE}
    };
    
    
    /**@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 performing battery measurement and updating the Battery Level characteristic
     *        in Battery Service.
     */
    static void battery_level_update(void)
    {
        uint32_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);
        if ((err_code != NRF_SUCCESS) &&
            (err_code != NRF_ERROR_INVALID_STATE) &&
            (err_code != BLE_ERROR_NO_TX_PACKETS) &&
            (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 handling the Heart rate measurement timer timeout.
     *
     * @details This function will be called each time the heart rate measurement timer expires.
     *          It will exclude RR Interval data from every third measurement.
     *
     * @param[in]   p_context   Pointer used for passing some arbitrary information (context) from the
     *                          app_start_timer() call to the timeout handler.
     */
    static void heart_rate_meas_timeout_handler(void * p_context)
    {
        static uint32_t cnt = 0;
        uint32_t        err_code;
        uint16_t        heart_rate;
    
        UNUSED_PARAMETER(p_context);
    
        heart_rate = (uint16_t)sensorsim_measure(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);
    
        cnt++;
        err_code = ble_hrs_heart_rate_measurement_send(&m_hrs, heart_rate);
        if ((err_code != NRF_SUCCESS) &&
            (err_code != NRF_ERROR_INVALID_STATE) &&
            (err_code != BLE_ERROR_NO_TX_PACKETS) &&
            (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
        )
        {
            APP_ERROR_HANDLER(err_code);
        }
    
        // Disable RR Interval recording every third heart rate measurement.
        // NOTE: An application will normally not do this. It is done here just for testing generation
        //       of messages without RR Interval measurements.
        m_rr_interval_enabled = ((cnt % 3) != 0);
    }
    
    
    /**@brief Function for handling the RR interval timer timeout.
     *
     * @details This function will be called each time the RR interval 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 rr_interval_timeout_handler(void * p_context)
    {
        UNUSED_PARAMETER(p_context);
    
        if (m_rr_interval_enabled)
        {
            uint16_t rr_interval;
    
            rr_interval = (uint16_t)sensorsim_measure(&m_rr_interval_sim_state,
                                                          &m_rr_interval_sim_cfg);
            ble_hrs_rr_interval_add(&m_hrs, rr_interval);
        }
    }
    
    
    /**@brief Function for handling the Sensor Contact Detected timer timeout.
     *
     * @details This function will be called each time the Sensor Contact Detected 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 sensor_contact_detected_timeout_handler(void * p_context)
    {
        static bool sensor_contact_detected = false;
    
        UNUSED_PARAMETER(p_context);
    
        sensor_contact_detected = !sensor_contact_detected;
        ble_hrs_sensor_contact_detected_update(&m_hrs, sensor_contact_detected);
    }
    
    /**@brief Function for the Timer initialization.
     *
     * @details Initializes the timer module. This creates and starts application timers.
     */
    static void timers_init(void)
    {
        uint32_t err_code;
    
        // Initialize timer module.
        APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);
    
        // 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);
    
        err_code = app_timer_create(&m_heart_rate_timer_id,
                                    APP_TIMER_MODE_REPEATED,
                                    heart_rate_meas_timeout_handler);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_create(&m_rr_interval_timer_id,
                                    APP_TIMER_MODE_REPEATED,
                                    rr_interval_timeout_handler);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_create(&m_sensor_contact_timer_id,
                                    APP_TIMER_MODE_REPEATED,
                                    sensor_contact_detected_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)
    {
        uint32_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_HEART_RATE_SENSOR_HEART_RATE_BELT);
        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 services that will be used by the application.
     *
     * @details Initialize the Heart Rate, Battery and Device Information services.
     */
    static void services_init(void)
    {
        uint32_t       err_code;
        ble_hrs_init_t hrs_init;
        ble_bas_init_t bas_init;
        ble_dis_init_t dis_init;
        uint8_t        body_sensor_location;
    
        // Initialize Heart Rate Service.
        body_sensor_location = BLE_HRS_BODY_SENSOR_LOCATION_FINGER;
    
        memset(&hrs_init, 0, sizeof(hrs_init));
    
        hrs_init.evt_handler                 = NULL;
        hrs_init.is_sensor_contact_supported = true;
        hrs_init.p_body_sensor_location      = &body_sensor_location;
    
        // Here the sec level for the Heart Rate Service can be changed/increased.
        BLE_GAP_CONN_SEC_MODE_SET_OPEN(&hrs_init.hrs_hrm_attr_md.cccd_write_perm);
        BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hrs_init.hrs_hrm_attr_md.read_perm);
        BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hrs_init.hrs_hrm_attr_md.write_perm);
    
        BLE_GAP_CONN_SEC_MODE_SET_OPEN(&hrs_init.hrs_bsl_attr_md.read_perm);
        BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&hrs_init.hrs_bsl_attr_md.write_perm);
    
        err_code = ble_hrs_init(&m_hrs, &hrs_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.
        BLE_GAP_CONN_SEC_MODE_SET_OPEN(&bas_init.battery_level_char_attr_md.cccd_write_perm);
        BLE_GAP_CONN_SEC_MODE_SET_OPEN(&bas_init.battery_level_char_attr_md.read_perm);
        BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&bas_init.battery_level_char_attr_md.write_perm);
    
        BLE_GAP_CONN_SEC_MODE_SET_OPEN(&bas_init.battery_level_report_read_perm);
    
        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.
        memset(&dis_init, 0, sizeof(dis_init));
    
        ble_srv_ascii_to_utf8(&dis_init.manufact_name_str, (char *)MANUFACTURER_NAME);
    
        BLE_GAP_CONN_SEC_MODE_SET_OPEN(&dis_init.dis_attr_md.read_perm);
        BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&dis_init.dis_attr_md.write_perm);
    
        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);
    
        m_heart_rate_sim_cfg.min          = MIN_HEART_RATE;
        m_heart_rate_sim_cfg.max          = MAX_HEART_RATE;
        m_heart_rate_sim_cfg.incr         = HEART_RATE_INCREMENT;
        m_heart_rate_sim_cfg.start_at_max = false;
    
        sensorsim_init(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);
    
        m_rr_interval_sim_cfg.min          = MIN_RR_INTERVAL;
        m_rr_interval_sim_cfg.max          = MAX_RR_INTERVAL;
        m_rr_interval_sim_cfg.incr         = RR_INTERVAL_INCREMENT;
        m_rr_interval_sim_cfg.start_at_max = false;
    
        sensorsim_init(&m_rr_interval_sim_state, &m_rr_interval_sim_cfg);
    }
    
    
    /**@brief Function for starting application timers.
     */
    static void application_timers_start(void)
    {
        uint32_t err_code;
    
        // Start application timers.
        err_code = app_timer_start(m_battery_timer_id, BATTERY_LEVEL_MEAS_INTERVAL, NULL);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_start(m_heart_rate_timer_id, HEART_RATE_MEAS_INTERVAL, NULL);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_start(m_rr_interval_timer_id, RR_INTERVAL_INTERVAL, NULL);
        APP_ERROR_CHECK(err_code);
    
        err_code = app_timer_start(m_sensor_contact_timer_id, SENSOR_CONTACT_DETECTED_INTERVAL, 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)
    {
        uint32_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)
    {
        uint32_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_hrs.hrm_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)
    {
        uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
        APP_ERROR_CHECK(err_code);
    
        err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
        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)
    {
        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;
        }
    }
    
    
    /**@brief Function for handling the Application's BLE Stack events.
     *
     * @param[in]   p_ble_evt   Bluetooth stack event.
     */
    static void on_ble_evt(ble_evt_t * p_ble_evt)
    {
        uint32_t err_code;
    
        switch (p_ble_evt->header.evt_id)
        {
            case BLE_GAP_EVT_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;
                
                break;
    
            case BLE_GAP_EVT_DISCONNECTED:
                err_code = bsp_indication_set(BSP_INDICATE_IDLE);
                APP_ERROR_CHECK(err_code);
    
                err_code = bsp_indication_set(BSP_INDICATE_ALERT_OFF);
                APP_ERROR_CHECK(err_code);
                break;
    
            default:
                // No implementation needed.
                break;
        }
    }
    
    
    /**@brief Function for dispatching a BLE stack event to all modules with a BLE stack event handler.
     *
     * @details This function is called from the BLE Stack event interrupt handler after a BLE stack
     *          event has been received.
     *
     * @param[in]   p_ble_evt   Bluetooth stack event.
     */
    static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
    {
        app_beacon_scanner_on_ble_evt(p_ble_evt);
        dm_ble_evt_handler(p_ble_evt);
        ble_hrs_on_ble_evt(&m_hrs, p_ble_evt);
        ble_bas_on_ble_evt(&m_bas, p_ble_evt);
        ble_conn_params_on_ble_evt(p_ble_evt);
        bsp_btn_ble_on_ble_evt(p_ble_evt);
        on_ble_evt(p_ble_evt);
        ble_advertising_on_ble_evt(p_ble_evt);
    }
    
    
    /**@brief Function for dispatching a system event to interested modules.
     *
     * @details This function is called from the System event interrupt handler after a system
     *          event has been received.
     *
     * @param[in]   sys_evt   System stack event.
     */
    static void sys_evt_dispatch(uint32_t sys_evt)
    {
        pstorage_sys_event_handler(sys_evt);
        app_beacon_scanner_on_sys_evt(sys_evt);
        ble_advertising_on_sys_evt(sys_evt);
    }
    
    
    /**@brief Function for initializing the beacon scanner module.
     */
    static void scanner_init()
    {
        m_beacon_scanner_init.evt_handler   = beacon_evt_handler;
        m_beacon_scanner_init.error_handler = beacon_scanner_error_handler;
        app_beacon_scanner_init(&m_beacon_scanner_init);
    }
    
    
    /**@brief Function for starting the beacon scanner module.
     */
    static void scanner_start()
    {
        app_beacon_scanner_start();
    }
    
    
    /**@brief Function for initializing the BLE stack.
     *
     * @details Initializes the SoftDevice and the BLE event interrupt.
     */
    static void ble_stack_init(void)
    {
        uint32_t err_code;
        
        nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
        
        // Initialize the SoftDevice handler module.
        SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);
        
        ble_enable_params_t ble_enable_params;
        err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
                                                        PERIPHERAL_LINK_COUNT,
                                                        &ble_enable_params);
        APP_ERROR_CHECK(err_code);
        
        //Check the ram settings against the used number of links
        CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT,PERIPHERAL_LINK_COUNT);
        
        // Enable BLE stack.
        err_code = softdevice_enable(&ble_enable_params);
        APP_ERROR_CHECK(err_code);
    
        // Register with the SoftDevice handler module for BLE events.
        err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
        APP_ERROR_CHECK(err_code);
    
        // Register with the SoftDevice handler module for BLE events.
        err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@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)
    {
        uint32_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;
    
            default:
                break;
        }
    }
    
    
    /**@brief Function for handling the Device Manager events.
     *
     * @param[in]   p_evt   Data associated to the device manager event.
     */
    static uint32_t device_manager_evt_handler(dm_handle_t const    * p_handle,
                                               dm_event_t const     * p_event,
                                               ret_code_t           event_result)
    {
        APP_ERROR_CHECK(event_result);
        return NRF_SUCCESS;
    }
    
    
    /**@brief Function for the Device Manager initialization.
     *
     * @param[in] erase_bonds  Indicates whether bonding information should be cleared from
     *                         persistent storage during initialization of the Device Manager.
     */
    static void device_manager_init(bool erase_bonds)
    {
        uint32_t               err_code;
        dm_init_param_t        init_param = {.clear_persistent_data = erase_bonds};
        dm_application_param_t register_param;
        
        // Initialize persistent storage module.
        err_code = pstorage_init();
        APP_ERROR_CHECK(err_code);
    
        err_code = dm_init(&init_param);
        APP_ERROR_CHECK(err_code);
    
        memset(&register_param.sec_param, 0, sizeof(ble_gap_sec_params_t));
        
        register_param.sec_param.bond         = SEC_PARAM_BOND;
        register_param.sec_param.mitm         = SEC_PARAM_MITM;
        register_param.sec_param.lesc         = SEC_PARAM_LESC;
        register_param.sec_param.keypress     = SEC_PARAM_KEYPRESS;
        register_param.sec_param.io_caps      = SEC_PARAM_IO_CAPABILITIES;
        register_param.sec_param.oob          = SEC_PARAM_OOB;
        register_param.sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
        register_param.sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
        register_param.evt_handler            = device_manager_evt_handler;
        register_param.service_type           = DM_PROTOCOL_CNTXT_GATT_SRVR_ID;
    
        err_code = dm_register(&m_app_handle, &register_param);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for initializing the Advertising functionality.
     */
    static void advertising_init(void)
    {
        uint32_t      err_code;
        ble_advdata_t advdata;
    
        // Build advertising data struct to pass into @ref ble_advertising_init.
        memset(&advdata, 0, sizeof(advdata));
    
        advdata.name_type               = BLE_ADVDATA_FULL_NAME;
        advdata.include_appearance      = true;
        advdata.flags                   = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
        advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
        advdata.uuids_complete.p_uuids  = m_adv_uuids;
    
        ble_adv_modes_config_t options = {0};
        options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
        options.ble_adv_fast_interval = APP_ADV_INTERVAL;
        options.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;
    
        err_code = ble_advertising_init(&advdata, NULL, &options, on_adv_evt, NULL);
        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)
    {
        bsp_event_t startup_event;
    
        uint32_t err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS,
                                     APP_TIMER_TICKS(100, APP_TIMER_PRESCALER),
                                     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 the Power manager.
     */
    static void power_manage(void)
    {
        uint32_t err_code = sd_app_evt_wait();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for application main entry.
     */
    int main(void)
    {
        uint32_t err_code;
        bool erase_bonds;
    
        // Initialize.
        timers_init();
    	  uart_inti();
        buttons_leds_init(&erase_bonds);
        ble_stack_init();
        device_manager_init(erase_bonds);
        gap_params_init();
        advertising_init();
        services_init();
        sensor_simulator_init();
        conn_params_init();
        scanner_init();
    
        // Start execution.
        scanner_start();
        application_timers_start();
        err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
        APP_ERROR_CHECK(err_code);
        
        // Enter main loop.
        for (;;)
        {
            power_manage();
        }
    }
    
    
    
    scanner_beacon.h

    Best regards,

    Edvin

  • Note that the address is LSB, so if you want to see it the same way as in nRF Connect, you must print it in the opposite order, starting from addr[5] and ending with addr[0].

  • thank you Edvin,

    Thanks for your effort.I will check with changes in my code and update you. sorry for trouble I give you.

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