RE: How to scan only advertising name??

Hung Bui — Tue, 20 Apr 2021 09:42:12 GMT

Hi Hwang,

The reason it doesn't connect because it didn't consider that it's a name matched.
As you can see you found the packet inside NRF_BLE_SCAN_EVT_NOT_FOUND.
I would suggest to use SCAN_SHORT_NAME_FILTER instead of SCAN_NAME_FILTER when you call ble_scan_init()

Like this:

err_code = nrf_ble_scan_filter_set(&m_scan,SCAN_SHORT_NAME_FILTER ,m_target_periph_name);

Another option is to connect manually using the address of the advertiser that you find inside NRF_BLE_SCAN_EVT_NOT_FOUND using sd_ble_gap_connect().

RE: How to scan only advertising name??

Dev_Dev — Tue, 20 Apr 2021 06:12:10 GMT

case NRF_BLE_SCAN_EVT_NOT_FOUND:
        {
            //name check
            /* Scan encoded adv. payload for data of type BLE_GAP_AD_TYPE_COMPLETE_LOCAL_NAME */ 
            parsed_name_len = ble_advdata_search(adv_report->data.p_data, adv_report->data.len, &data_offset, BLE_GAP_AD_TYPE_SHORT_LOCAL_NAME);
            
            /* Name found if parsed_name_len != 0 */
            p_parsed_name = &adv_report->data.p_data[data_offset];            

            // if p_parsed_name == target name, then Connect with peripheral
            if(memcmp(m_target_periph_name, p_parsed_name, target_name_len)== 0)                    // compare only target_name_len chars of advertised name and target name
            {
                
                    DEBUG_PRINTF("SEARCH OK!\r\n");
            }
        }

I solved. [BLE_GAP_AD_TYPE_SHORT_LOCAL_NAME]

Product search was successful, but the connection was unsuccessful.

how to connect??

is not working init_scan.connect_if_match = true;