Constant esp_idf_svc::hal::sys::esp_ble_scan_filter_t_BLE_SCAN_FILTER_ALLOW_ONLY_WLST

pub const esp_ble_scan_filter_t_BLE_SCAN_FILTER_ALLOW_ONLY_WLST: u32 = 1; // 1u32

< Accept only :

1. advertisement packets from devices where the advertiser’s address is in the White list.
2. Directed advertising packets which are not addressed for this device shall be ignored.