how to scan ibeacon mac adress and name using nRF51

[uldara]

how can i scan ibeacon name and mac address by using nRF51 ?

do you have sample code for keil ?

[Kenneth]

Hi,

I recommend to download nRF5 SDKv12.3 and look at the multilink central example:
\nRF5_SDK_12.3.0_d7731ad\examples\ble_central\ble_app_multilink_central\pca10028\s130\arm5_no_packs 

The multilink central example is setup to connect to specific peripheral devices, so in your case you need to modify on_adv_report() in main.c to output for instance peer_addr and advertisment content instead of connecting.

Best regards,
Kenneth

[uldara]

Thank for your reply 

i can get mac address and name for normal BLE,

but for ibeacon tag i get mac address only.

	   
	   
	   
	    err_code = adv_report_parse(BLE_GAP_AD_TYPE_COMPLETE_LOCAL_NAME, &adv_data, &type_data);    
    
	    if (err_code != NRF_SUCCESS)
            {
                // Compare short local name in case complete name does not match.
                err_code = adv_report_parse(BLE_GAP_AD_TYPE_SHORT_LOCAL_NAME,
                                          &adv_data,
                                          &type_data);
            }      
	        
	        
	        
	        
	         if (err_code == NRF_SUCCESS)
                    {
							  //NRF_LOG_PRINTF("Succes: %d \r\n", i);
								if (err_code == NRF_SUCCESS)
								{
									NRF_LOG_PRINTF("Name: ");
									char name[50];
									for(int i = 0 ; i < type_data.data_len  ;i++)
									{
										name[i] = type_data.p_data[i];
										name[i+1] = 0;
									}
									 NRF_LOG_PRINTF(name);
									 NRF_LOG_PRINTF("   MAC  [%02X:%02X:%02X:%02X:%02X:%02X]",
																peer_addr->addr[5], peer_addr->addr[4], peer_addr->addr[3],
																peer_addr->addr[2], peer_addr->addr[1], peer_addr->addr[0]);
				
									 NRF_LOG_PRINTF("\r\n");
									
								}
					}

my output log

Name: Tile       MAC [DA:CC:8B:E8:8F:5A]           // Success Name: Tile
Name: N/A       MAC [22:F1:E9:37:90:21]               // Can't get name    (ibeacon tag)
Name: N/A       MAC [27:E2:B9:B6:F8:59]              // Can't get name     (ibeacon tag)

[Kenneth]

Hi,

You can read about the ibeacon format here: https://developer.apple.com/ibeacon/ 

It does not contain a name.

Best regards,
Kenneth

[uldara]

Thank you Kenneth

i just start on this project. i just wonder why in phone can scan name and nRF51 can get only mac address for some device.

scan from phone

scan from nRF51

Name: N/A                MAC [CF:A4:7E:29:AE:A6]

Name: Tile                MAC [DA:CC:8B:E8:8F:5A]

[Kenneth]

Interesting, it might be that the name is cached somehow in the OS (e.g. have this device been connected as a different device previously during development)?

If you download the nRF Sniffer tool, then you can see the actual content on air to confirm:
https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF-Sniffer 

Best regards,
Kenneth