I am currently struggling with filtering based on appearance using the Scanning module.
I have a beacon that advertises some dummy data, appearance and service UUID. With the scanning module I was able to filter this advertisement from other advertisements by testing it in an environment with a lot of BLE devices. However, whenever I try to filter both service UUID and appearance or just appearance I do not receive any advertisements that matches with these filters.
The code below works fine.
err = bt_scan_filter_add(BT_SCAN_FILTER_TYPE_UUID, &beacon_service_uuid);
if (err) {
printk("Service UUID scan filter cannot be set (err %d)\n", err);
return err;
}
err = bt_scan_filter_enable(BT_SCAN_UUID_FILTER, true);
if (err) {
printk("UUID filters cannot be enabled (err %d)\n", err);
return err;
}
The following however does not work
err = bt_scan_filter_add(BT_SCAN_FILTER_TYPE_APPEARANCE, &beacon_appearance_uuid);
if (err) {
printk("Appearance UUID scan filter cannot be set (err %d)\n", err);
return err;
}
err = bt_scan_filter_enable(BT_SCAN_APPEARANCE_FILTER, true);
if (err != 0) {
printk("Scan filters cannot be enabled (err %d)\n", err);
return err;
}I can try to do the filtering whenever I parse the data, but I would like to see if I can already filter advertisements with the filters.
