Adverting is started, stopped and started ... over and over

[paul0208]

Hi,

My advertising initial is as follow.

  manuf_specific_data.data.p_data = (uint8_t *) m_beacon_info;
  manuf_specific_data.data.size   = APP_BEACON_INFO_LENGTH;

  // Build and set advertising data.
  memset(&advdata, 0, sizeof(advdata));

  advdata.name_type     = BLE_ADVDATA_NO_NAME;
  advdata.flags   = flags;
  advdata.p_manuf_specific_data = &manuf_specific_data;

  // Initialize advertising parameters (used when starting advertising).
  memset(&m_adv_params, 0, sizeof(m_adv_params));

  m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED;
  m_adv_params.p_peer_addr   = NULL;  // Undirected advertisement.
  m_adv_params.filter_policy   = BLE_GAP_ADV_FP_ANY;
  m_adv_params.interval  = NON_CONNECTABLE_ADV_INTERVAL;
  m_adv_params.duration  = 0;     // Never time out.

  err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len);
  APP_ERROR_CHECK(err_code);

  err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params);

But, 10~11 packet are sent and stop.
After 7~8 sec. resent advertisement packet again.... and 10~10 packet send, 7~8 sec stop...

What is the problem?

BR
Paul

[paul0208]

/**
 * Copyright (c) 2016 - 2021, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *  Semiconductor ASA integrated circuit in a product or a software update for
 *  such product, must reproduce the above copyright notice, this list of
 *  conditions and the following disclaimer in the documentation and/or other
 *  materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *  contributors may be used to endorse or promote products derived from this
 *  software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *  Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *  engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdarg.h>

#include "nordic_common.h"
#include "app_error.h"
#include "app_uart.h"
#include "ble_db_discovery.h"
#include "app_timer.h"
#include "app_util.h"
#include "bsp_btn_ble.h"
#include "ble.h"
#include "ble_gap.h"
#include "ble_hci.h"
#include "nrf_sdh.h"
#include "nrf_sdh_ble.h"
#include "nrf_sdh_soc.h"
#include "ble_nus_c.h"
#include "nrf_ble_gatt.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_ble_scan.h"

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

#include "def.h"


#define APP_BLE_CONN_CFG_TAG  1                     /**< Tag that refers to the BLE stack configuration set with @ref sd_ble_cfg_set. The default tag is @ref BLE_CONN_CFG_TAG_DEFAULT. */
#define APP_BLE_OBSERVER_PRIO   3                     /**< BLE observer priority of the application. There is no need to modify this value. */

#define UART_TX_BUF_SIZE    1024                  /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE    256                   /**< UART RX buffer size. */

#define NUS_SERVICE_UUID_TYPE   BLE_UUID_TYPE_VENDOR_BEGIN        /**< UUID type for the Nordic UART Service (vendor specific). */

#define ECHOBACK_BLE_UART_DATA  1                     /**< Echo the UART data that is received over the Nordic UART Service (NUS) back to the sender. */

#define SCAN_INTERVAL               0x0320                              /**< Determines scan interval in units of 0.625 millisecond. */
#define SCAN_WINDOW                 0x0320                              /**< Determines scan window in units of 0.625 millisecond. */
#define SCAN_DURATION           	0x0000                              /**< Duration of the scanning in units of 10 milliseconds. If set to 0x0000, scanning continues until it is explicitly disabled. */

NRF_BLE_GATT_DEF(m_gatt);                         /**< GATT module instance. */
BLE_DB_DISCOVERY_DEF(m_db_disc);                    /**< Database discovery module instance. */
NRF_BLE_SCAN_DEF(m_scan);                         /**< Scanning Module instance. */
NRF_BLE_GQ_DEF(m_ble_gatt_queue,                    /**< BLE GATT Queue instance. */
         NRF_SDH_BLE_CENTRAL_LINK_COUNT,
         NRF_BLE_GQ_QUEUE_SIZE);

static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - OPCODE_LENGTH - HANDLE_LENGTH; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */

static uint8_t tag_prefix [6] =  
	{
  0x4b, 0x22, 0x4d, 0xbf, 0x54, 0x13
	};

#if 0
static ble_gap_scan_params_t m_scan_param =                 /**< Scan parameters requested for scanning and connection. */
{
    .active        = 0x00,
    .interval      = SCAN_INTERVAL,
    .window        = SCAN_WINDOW,
    .filter_policy = BLE_GAP_SCAN_FP_ACCEPT_ALL,
    .timeout       = SCAN_DURATION,
//    .scan_phys     = BLE_GAP_PHY_CODED,                                 // Choose only one of the following scan_phys
    .scan_phys     = BLE_GAP_PHY_1MBPS,
//    .scan_phys     = BLE_GAP_PHY_2MBPS,
    .extended      = 1,
};
#endif

/**@brief NUS UUID. */
static ble_uuid_t const m_nus_uuid =
{
  .uuid = BLE_UUID_NUS_SERVICE,
  .type = NUS_SERVICE_UUID_TYPE
};

APP_TIMER_DEF(m_app_timer_id);

int uart_event_handle_enable = 0;

int hostConnected = 0;
int moduleId = GW_MODULE;

void
DBG (const char *fmt, ...)
{
  va_list argptr;
  char buff [100];
  int i, len;

  va_start(argptr, fmt);
  vsprintf(&buff[0], fmt, argptr);
  va_end(argptr);

  len = strlen(&buff[0]);

  app_uart_put ('$');
  app_uart_put (0x13);
  app_uart_put (len);

  for (i = 0; i < len; i ++)
    {
    app_uart_put (buff[i]);
    if (buff[i] == '\n')
      {
      //app_uart_put ('\r');
      }
  }
}

/**@brief Function for handling asserts in the SoftDevice.
 *
 * @details This function is called in case of an assert in the SoftDevice.
 *
 * @warning This handler is only an example and is not meant for the 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] p_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(0xDEADBEEF, line_num, p_file_name);
}

/**@brief Function to start scanning. */
static void scan_start(void)
{
  ret_code_t ret;

  ret = nrf_ble_scan_start(&m_scan);
  APP_ERROR_CHECK(ret);

  ret = bsp_indication_set(BSP_INDICATE_SCANNING);
  APP_ERROR_CHECK(ret);
}


/**@brief Function for handling Scanning Module events.
 */
static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
  ret_code_t err_code;

  switch(p_scan_evt->scan_evt_id)
  {
     case NRF_BLE_SCAN_EVT_CONNECTING_ERROR:
     {
        err_code = p_scan_evt->params.connecting_err.err_code;
        APP_ERROR_CHECK(err_code);
     } break;

     case NRF_BLE_SCAN_EVT_CONNECTED:
     {
      ble_gap_evt_connected_t const * p_connected =
                 p_scan_evt->params.connected.p_connected;
      // Scan is automatically stopped by the connection.
      NRF_LOG_INFO("Connecting to target %02x%02x%02x%02x%02x%02x",
            p_connected->peer_addr.addr[0],
            p_connected->peer_addr.addr[1],
            p_connected->peer_addr.addr[2],
            p_connected->peer_addr.addr[3],
            p_connected->peer_addr.addr[4],
            p_connected->peer_addr.addr[5]
            );
     } break;

     case NRF_BLE_SCAN_EVT_SCAN_TIMEOUT:
     {
       NRF_LOG_INFO("Scan timed out.");
       DBG ("Scan timed out. And restart");
       scan_start();
     } break;

     default:
       break;
  }
}


/**@brief Function for initializing the scanning and setting the filters.
 */
static void scan_init(void)
{
  ret_code_t      err_code;
  nrf_ble_scan_init_t init_scan;

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

  init_scan.connect_if_match = false;
  init_scan.conn_cfg_tag   = APP_BLE_CONN_CFG_TAG;
  //init_scan.p_scan_param   = &m_scan_param;

  err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
  APP_ERROR_CHECK(err_code);

  err_code = nrf_ble_scan_filter_set(&m_scan, SCAN_UUID_FILTER, &m_nus_uuid);
  APP_ERROR_CHECK(err_code);

  err_code = nrf_ble_scan_filters_enable(&m_scan, NRF_BLE_SCAN_UUID_FILTER, false);
  APP_ERROR_CHECK(err_code);
}

/**@brief   Function for handling app_uart events.
 *
 * @details This function receives a single character from the app_uart module and appends it to
 *      a string. The string is sent over BLE when the last character received is a
 *      'new line' '\n' (hex 0x0A) or if the string reaches the maximum data length.
 */
static uint8_t uart_data_ring_buf[UART_MAX_DATA_LEN];
static uint16_t wr_ptr = 0, rd_ptr = 0;

void uart_event_handle(app_uart_evt_t * p_event)
{
  switch (p_event->evt_type)
    {
      /**@snippet [Handling data from UART] */
    case APP_UART_DATA_READY:
      {
      uint8_t ch;
      UNUSED_VARIABLE(app_uart_get(&ch));
      //app_uart_put (ch);
      uart_data_ring_buf[wr_ptr ++] = ch;
      if (wr_ptr == UART_MAX_DATA_LEN)
        {
        wr_ptr = 0; 
        }
      }
      break;

    /**@snippet [Handling data from UART] */
    case APP_UART_COMMUNICATION_ERROR:
      NRF_LOG_ERROR("Communication error occurred while handling UART.");
      //APP_ERROR_HANDLER(p_event->data.error_communication);
      break;

    case APP_UART_FIFO_ERROR:
      NRF_LOG_ERROR("Error occurred in FIFO module used by UART.");
      //APP_ERROR_HANDLER(p_event->data.error_code);
      break;

    default:
      break;
  }
}

uint8_t
uart_rx_handler (void)
{
  uint8_t ch;
  if (wr_ptr != rd_ptr)
    {
    ch = uart_data_ring_buf [rd_ptr ++]; 
    //DBG ("%c", ch);
    if (rd_ptr == UART_MAX_DATA_LEN)
      {
       rd_ptr = 0; 
      }
    return ch;
    }
  return 0;
}

/**
 * @brief Function for handling shutdown events.
 *
 * @param[in]   event     Shutdown type.
 */
static bool shutdown_handler(nrf_pwr_mgmt_evt_t event)
{
  ret_code_t err_code;

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

  switch (event)
  {
    case NRF_PWR_MGMT_EVT_PREPARE_WAKEUP:
      // Prepare wakeup buttons.
      err_code = bsp_btn_ble_sleep_mode_prepare();
      APP_ERROR_CHECK(err_code);
      break;

    default:
      break;
  }

  return true;
}

NRF_PWR_MGMT_HANDLER_REGISTER(shutdown_handler, APP_SHUTDOWN_HANDLER_PRIORITY);


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

  switch (p_ble_evt->header.evt_id)
  {
    case BLE_GAP_EVT_ADV_REPORT:
      {
      // pass all beacon
#ifndef DK_BOARD
      int i;
#if 0
      if (tag_prefix[0] == 0xff && tag_prefix[1] == 0xff && tag_prefix[2] == 0xff &&
          tag_prefix[3] == 0xff && tag_prefix[4] == 0xff && tag_prefix[5] == 0xff)
        {
        app_uart_put ('$');
        app_uart_put (0x12);  // tag_info msg_id
        app_uart_put (17);    // len

        app_uart_put (p_gap_evt->params.adv_report.rssi);
        for (i = 0; i < 16; i ++)
          {
          app_uart_put (m_scan.scan_buffer.p_data[i + 9]);
          }
        }
      else
#endif
        {
        // compare prefix, if not match, then drop
        if (memcmp (&m_scan.scan_buffer.p_data[9], tag_prefix, 6) != 0)
          {
          // not my tag
          break;
          }
        app_uart_put ('$');
        app_uart_put (0x12);  // tag_info msg_id
        app_uart_put (11);    // len

        app_uart_put (p_gap_evt->params.adv_report.rssi);
        for (i = 0; i < 10; i ++)
          {
          app_uart_put (m_scan.scan_buffer.p_data[i + 15]);
          }
        }
#endif
      nrf_gpio_pin_toggle (OP_LED_1_PIN);
      }
      break;

    case BLE_GAP_EVT_CONNECTED:
      break;

    case BLE_GAP_EVT_DISCONNECTED:

      NRF_LOG_INFO("Disconnected. conn_handle: 0x%x, reason: 0x%x",
             p_gap_evt->conn_handle,
             p_gap_evt->params.disconnected.reason);
      break;

    case BLE_GAP_EVT_TIMEOUT:
      if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN)
      {
        NRF_LOG_INFO("Connection Request timed out.");
      }
      break;

    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;

    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;

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

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

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

    default:
      break;
  }
}


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

  err_code = nrf_sdh_enable_request();
  APP_ERROR_CHECK(err_code);

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

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

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


/**@brief Function for handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
  if (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED)
  {
    NRF_LOG_INFO("ATT MTU exchange completed.");

    m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
    NRF_LOG_INFO("Ble NUS max data length set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
  }
}


/**@brief Function for initializing the GATT library. */
void gatt_init(void)
{
  ret_code_t err_code;

  err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
  APP_ERROR_CHECK(err_code);

  err_code = nrf_ble_gatt_att_mtu_central_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
  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)
{
  switch (event)
  {
    case BSP_EVENT_SLEEP:
      nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
      break;

    case BSP_EVENT_DISCONNECT:
      break;

    default:
      break;
  }
}

/**@brief Function for initializing the UART. */
static void uart_init(void)
{
  ret_code_t err_code;

  app_uart_comm_params_t const comm_params =
  {
    .rx_pin_no  = HOST_UART_RX_PIN,
    .tx_pin_no  = HOST_UART_TX_PIN,
    .rts_pin_no   = 0,
    .cts_pin_no   = 0,
    .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
    .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 initializing buttons and leds. */
static void port_init(void)
{
  nrf_gpio_cfg_input(MODULE_ID_PIN, NRF_GPIO_PIN_NOPULL );
  moduleId = nrf_gpio_pin_read (MODULE_ID_PIN);

  nrf_gpio_cfg_output(OP_LED_1_PIN);
  nrf_gpio_pin_clear (OP_LED_1_PIN);
}


/**@brief Function for initializing the timer. */
static void timer_init(void)
{
  ret_code_t err_code = app_timer_init();
  APP_ERROR_CHECK(err_code);
}


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

  NRF_LOG_DEFAULT_BACKENDS_INIT();
}


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

/**@brief Function for handling the idle state (main loop).
 *
 * @details Handles any pending log operations, then sleeps until the next event occurs.
 */
static void idle_state_handle(void)
{
  if (NRF_LOG_PROCESS() == false)
  {
    nrf_pwr_mgmt_run();
  }
}

static void
get_prefix_info (void)
{
  static int st = 0;
  uint8_t ch, len = 0, msg_id, cnt = 0, timeout = 0;
  uint8_t rx_data [64];
  int exit_flag = 1;

  while (exit_flag)
    {
    timeout ++;
    if (timeout == 10)
      {
      timeout = 0;
      st = 0; 
      }
    if ((ch = uart_rx_handler ()) != 0)
      {
      timeout = 0;
      switch (st)
        {
        case 0:
          {
          if (ch == '$')
            {
            st = 1;  
            }
          }
          break; 
        case 1:
          {
          if (ch == 0x92) // ble_cfg_req
            {
            msg_id = ch;
            cnt = 0;
            st = 2;
            }
          }
          break; 
        case 2:
          {
          len = ch;
          st = 3;
          }
          break;
        case 3:
          {
          rx_data [cnt ++] = ch;
          if (cnt == len)
            {
            if (msg_id == 0x92)
              {
              for (int i = 0; i < 6; i ++)
                {
                tag_prefix [i] = rx_data [i];
                }
              }
            exit_flag = 0;  // exit from while
            st = 0;
            cnt = 0;
            }
          }
          break;
        }
      }
    else 
      {
      nrf_gpio_pin_toggle (OP_LED_1_PIN);
      nrf_delay_ms (100);
      }
    }
}

static void 
app_timer_event_handler (void * p_context)
{
  nrf_gpio_pin_toggle (OP_LED_1_PIN);

  app_timer_start(m_app_timer_id, APP_TIMER_TICKS(APP_TIMER_INTERVAL), NULL);
}

int main(void)
{
  // Initialize.
  port_init ();
  log_init();
  timer_init();
  uart_init();

#ifndef DK_BOARD
  get_prefix_info ();
#endif
  hostConnected = 1;

  power_management_init();
  ble_stack_init();
  gatt_init();
  scan_init();

  app_timer_create(&m_app_timer_id, APP_TIMER_MODE_SINGLE_SHOT, app_timer_event_handler);  
  app_timer_start(m_app_timer_id, APP_TIMER_TICKS(1), NULL);

  // Start execution.
  DBG ("BLE scanner started.\r\n");
  scan_start();


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

https://www.nordicsemi.com/Products/Development-tools/nRF-Sniffer-for-Bluetooth-LE/Download?lang=en#infotabs

sniffer source is not released?

I cannot understand specific adv packet is not received while other adv packets are received, but wireshark can detect all specific adv packet well.

If collision is, wireshark can not receive that packet....

[paul0208]

Hi,
Any feedback regarding this?

BR
Paul

[Einar Thorsrud]

Hi Paul,

There is one thing that comes to mind, but I am not sure if that is the case. Originally you shows a snippet where you set the scan windows equal to the scan interval, which is what you want to do to scan with a 100% duty cycle. (You also want to make sure that both have a quite high number, as scanning will be stopped and restarted on the next advertising channel every time the interval elapses.)

However, in your code from the last post, that part is commented out. Is that what you are testing with? If commented out so that you don't provide scan params,  the NRF_BLE_SCAN_SCAN_INTERVAL and NRF_BLE_SCAN_SCAN_WINDOW (and other parameters) form sdk_config.h is used. So then the question is if this is still commented out, and if so, what you have set these to in your sdk_config.h?

Regarding the sniffer, you are right. The sniffer firmware is only available in binary form.

Einar

[paul0208]

Hi,

my sdk_config.h was as follow

// <o> NRF_BLE_SCAN_SCAN_INTERVAL - Scanning interval. Determines the scan interval in units of 0.625 millisecond. 
#ifndef NRF_BLE_SCAN_SCAN_INTERVAL
#define NRF_BLE_SCAN_SCAN_INTERVAL 160
#endif

// <o> NRF_BLE_SCAN_SCAN_DURATION - Duration of a scanning session in units of 10 ms. Range: 0x0001 - 0xFFFF (10 ms to 10.9225 ms). If set to 0x0000, the scanning continues until it is explicitly disabled. 
#ifndef NRF_BLE_SCAN_SCAN_DURATION
#define NRF_BLE_SCAN_SCAN_DURATION 0
#endif

// <o> NRF_BLE_SCAN_SCAN_WINDOW - Scanning window. Determines the scanning window in units of 0.625 millisecond. 
#ifndef NRF_BLE_SCAN_SCAN_WINDOW
#define NRF_BLE_SCAN_SCAN_WINDOW 80
#endif

I fixed this problem setting equal to interval and window

BR
Paul