Unable to print BLE devices Complete local Name?

RE: Unable to print BLE devices Complete local Name?

Sigurd — Fri, 22 Sep 2017 10:30:20 GMT

You can check the scan_rsp field in the ble_gap_evt_adv_report_t to see if the packet is a normal advertising packet or a scan response packet. If 1, the report corresponds to a scan response packet.

RE: Unable to print BLE devices Complete local Name?

sankeerthan — Fri, 22 Sep 2017 07:02:12 GMT

Hi Sigurd,

When i enabled m_scan_param.active = 1 i was getting data(i.e device name and address )2 times.

<info> app: Starting scan.
<info> app: ADDRESS=D0:5F:B8:22:6:14
<info> app: DEVICE NAME:Pronto
<info> app: ADDRESS=D0:5F:B8:22:6:14
<info> app: DEVICE NAME:Pronto
<info> app: ADDRESS=D0:5F:B8:21:FA:C4

app: ADDRESS=63:F8:3C:FE:CA:B9 app: DEVICE NAME:Sankeerthan app: ADDRESS=48:3:D:C8:A7:EE app: DEVICE NAME:Sankeerthan app: ADDRESS=48:3:D:C8:A7:EE

And when i disabled m_scan_param.active = 0 i was getting data only once i.e advertising packet but some devices are not advertising their name through advertising packet.

<info> app: Starting scan.
<info> app: ADDRESS=D0:5F:B8:21:FA:C4
<info> app: ADDRESS=D0:5F:B8:22:6:14
<info> app: DEVICE NAME:Sankeerthan
<info> app: ADDRESS=6D:63:15:58:38:5A

You can see above only address are being printed but not names but in 1st picture names are also being printed but 2 times.

I think i should disable advertising packet data and active scan response packet either one should be active.

Please suggest me how can i correct it??

Thank you.

RE: Unable to print BLE devices Complete local Name?

Sigurd — Thu, 21 Sep 2017 14:32:31 GMT

Hi,

The device name can be located in either the regular advertising packet, or the scan response packet. If it’s located in the scan response packet, you must turn on active scanning in order to find the name.

In the function scan_start() in main.c, change

m_scan_param.active   = 0;

m_scan_param.active   = 1;

RE: Unable to print BLE devices Complete local Name?

sankeerthan — Thu, 21 Sep 2017 14:20:06 GMT

yes i entered m_target_periph_name if not how can i enter into find_adv_name function and able to print other device names.i am able to print device names of some devices and not other devices like prontos and remotes even though it advertises it's complete local name these devices i am able to see their device names in nRF-Connect but not through board.

RE: Unable to print BLE devices Complete local Name?

Sigurd — Thu, 21 Sep 2017 14:09:17 GMT

Did you enter a m_target_periph_name (line 143 in main.c)? If not, the example will by default not look for the name.

RE: Unable to print BLE devices Complete local Name?

sankeerthan — Thu, 21 Sep 2017 13:53:52 GMT

yes i am able to find device addresses but not device names.In nRF-Connect i can see device name also of those devices.

RE: Unable to print BLE devices Complete local Name?

Sigurd — Thu, 21 Sep 2017 13:45:56 GMT

But you are able to find the device addresses of these devices?

RE: Unable to print BLE devices Complete local Name?

sankeerthan — Thu, 21 Sep 2017 13:22:40 GMT

i am using ble_app_hrs_c_pca10056_s140(nRF52840) and SDK is 14.0.0,and i am uable to fine devices like prontos,Remotes(which are ble devices).

RE: Unable to print BLE devices Complete local Name?

Sigurd — Thu, 21 Sep 2017 13:17:05 GMT

What SDK version is this ? Are you basing your code on the ble_app_hrs_c example? What kind of devices are you not able to find?

Try to do something like this:

Code snippet:

//search for advertising names
err_code = adv_report_parse(BLE_GAP_AD_TYPE_COMPLETE_LOCAL_NAME, &adv_data, &dev_name);
if (err_code == NRF_SUCCESS)
{
           
    NRF_LOG_RAW_HEXDUMP_INFO(dev_name.p_data,dev_name.data_len);
.
.   
.

RE: Unable to print BLE devices Complete local Name?

sankeerthan — Thu, 21 Sep 2017 12:12:44 GMT

Hi, ya some devices with N/A they are not advertising through name that is fine but for some devices i am able to see device name in nRF-Connect but not through my board(nRF52840) while scanning.

why??

Thank You.

RE: Unable to print BLE devices Complete local Name?

Sigurd — Wed, 20 Sep 2017 12:37:33 GMT

Hi,

Not all devices have a device name. A device name is not mandatory. In nRF-Connect devices without a name are shown as N/A. I suggest using the adv_report_parse() function from the ble_app_hrs_c example in the SDK to check if the device have a valid device name.