how to filter special bluetooth mac ?

[hcefk]

DK : 52840 

case : 

    we make 52840 enter active scan state and know other broadcaster devcice  mac,

can we use scan filter policy  filter this broadcaster devcice ,and only send scan req command to this device?

[Kenneth]

Hi,

You can use scanning with whitelist. The following configuration should give you the expected behavior:

ble_gap_scan_params_t::active = 1;
ble_gap_scan_params_t::filter_policy = BLE_GAP_SCAN_FP_WHITELIST;

See:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/structble__gap__scan__params__t.html#acd9c527acef10b51be23e997a29c992a 

Here is a reference on how to use the whitelist for scanning:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/group___b_l_e___g_a_p___w_l___s_h_a_r_e___m_s_c.html 

So for instance:

(1)First start scanning that is not active, then to send a scan request to a specific peer, then stop scanning, add peer to whitelist, and enable whitelist with active scan when starting scanning.

Kenneth