How to create a whitelist on the Central device

[purgoufr]

I want to create a whitelist on the Central device. Because there is a lot of peripheral devices around and I just want to connect one peripheral device. First I register the address of the central device to the peripheral device. When I work with a single peripheral device and a single central device, I can send commands from the central device to the peripheral device. But when I have more than one peripheral device in the vicinity, I can not send commands to the peripheral device registered from the central device. So I decided to create whitelist on the central device to connect the peripheral device which I registered before. But I don't know how. Do you have any example? (except ble_app_hrs)

Function to start scanning code;

// Function to start scanning
void scan_start(void) {
  ble_gap_whitelist_t   whitelist;
  ble_gap_addr_t      * p_whitelist_addr[BLE_GAP_WHITELIST_ADDR_MAX_COUNT];
  ble_gap_irk_t       * p_whitelist_irk[BLE_GAP_WHITELIST_IRK_MAX_COUNT];
  uint32_t              err_code;
  uint32_t              count;    

  err_code = pstorage_access_status_get(&count);
  APP_ERROR_CHECK(err_code);

  if (count != 0)
  {
      m_memory_access_in_progress = true;
      return;
  }
	
  // Initialize whitelist parameters.
  whitelist.addr_count = BLE_GAP_WHITELIST_ADDR_MAX_COUNT;
  whitelist.irk_count  = 0;
  whitelist.pp_addrs   = p_whitelist_addr;
  whitelist.pp_irks    = p_whitelist_irk;

  // Request creating of whitelist.
  err_code = dm_whitelist_create(&m_dm_app_id,&whitelist);
  APP_ERROR_CHECK(err_code);
	
  if (((whitelist.addr_count == 0) && (whitelist.irk_count == 0)) ||
      (m_scan_mode != BLE_WHITELIST_SCAN)                        ||
      (m_whitelist_temporarily_disabled))
  {
      APPL_LOG("THERE IS NO WHITELIST\r\n");		//Debug Note
      // No devices in whitelist, hence non selective performed.
      m_scan_param.active       = SCAN_ACTIVE;        // Active scanning set.
      m_scan_param.selective    = SCAN_SELECTIVE;     // Selective scanning not set.
      m_scan_param.interval     = SCAN_INTERVAL;			// Scan interval.
      m_scan_param.window       = SCAN_WINDOW;  			// Scan window.
      m_scan_param.p_whitelist  = NULL;        				// No whitelist provided.
      m_scan_param.timeout      = 0x0000;       			// No timeout.
			
  }
  else
  {
      APPL_LOG("WHITELIST WAS FOUND\r\n");		//Debug Note
      // Selective scanning based on whitelist first.
      m_scan_param.active       = 1;            // Active scanning set.
      m_scan_param.selective    = 1;            // Selective scanning not set.
      m_scan_param.interval     = SCAN_INTERVAL;// Scan interval.
      m_scan_param.window       = SCAN_WINDOW;  // Scan window.
      m_scan_param.p_whitelist  = &whitelist;   // Provide whitelist.
      m_scan_param.timeout      = 0x001E;       // 30 seconds timeout.
		
      m_scan_mode = BLE_WHITELIST_SCAN;
  }

  err_code = sd_ble_gap_scan_start(&m_scan_param);
  APP_ERROR_CHECK(err_code);
}

[purgoufr]

I debug again the central device, and I noticed

• whitelist.addr_count == 0
• whitelist.irk_count == 0
• m_scan_mode != BLE_WHITELIST_SCAN
• m_whitelist_temporarily_disabled== True

I can not add the peripheral device into central device.

1. Initialize whitelist parameters.
2. Request creating of whitelist.

But I can not add to whitelist .

[Petter Myhre]

You need to include more code and explanation if I'm going to understand what you are doing.

[purgoufr]

I want to create whitelist; I initialized whitelist parameter such as add_count,irk_count etc. Then I request creating of whitelist ; err_code = dm_whitelist_create(&m_dm_app_id,&whitelist); APP_ERROR_CHECK(err_code);

Now, how to add peripheral device to whitelist or how to store peripheral device address

[Petter Myhre]

If you have bonded dm_whitelist_create() should return addr_count != 0 and an address (if the peer is using a static address).

If you want to whitelist without bonding you need to make the whitelist manually. Like this.

[purgoufr]

I want to get "ble_gap_addr_t" automatically after the connection is established. Then I want to store this address into whitelist. So I will only need to connect once to add peripheral addresses into the whitelist.

how to store ble_gap_addr_t and ble_gap_irk_t into whitelist?