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Support for scan filtering by MAC address
bstenquist
Join Date: 19 Apr 21
Posts: 1
Posted: Thu, 2021-09-09 15:34
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Hello,

I am working with a device that is configured as a mdm9607 + QCA9377-3 running the LE.UM.1.1 Firmware

I am trying to perform scanning as a GATT Client that is filtered by a list of MAC addresses.

The API provided is:

    /** Setup scan filter params */
    bt_status_t (*scan_filter_param_setup)(btgatt_filt_param_setup_t filt_param);


    /** Configure a scan filter condition  */
    bt_status_t (*scan_filter_add_remove)(int client_if, int action, int filt_type,
                                   int filt_index, int company_id,
                                   int company_id_mask, const bt_uuid_t *p_uuid,
                                   const bt_uuid_t *p_uuid_mask, const bt_bdaddr_t *bd_addr,
                                   char addr_type, int data_len, char* p_data, int mask_len,
                                   char* p_mask);

    /** Clear all scan filter conditions for specific filter index*/
    bt_status_t (*scan_filter_clear)(int client_if, int filt_index);

    /** Enable / disable scan filter feature*/
    bt_status_t (*scan_filter_enable)(int client_if, bool enable);

 

There is little documentation about setup and usage.

When I setup the addition of a scan filter the callback returns indicating an error.

Questions:

1) Does the QCA9377 support the scan filter interface

2) Can filtering be perfromed by MAC

3) Are other kind of filtering supported such as by Device Name, Profile UUIDs, ect.. (there seems to be code at the BTIF layer but I can't find docuemntation for the QCA9377 supporting these features

4) Filter index is unknown it is likely a finite number, 0 to N. 0 seems to be the default accept everything filter

5) Common usage example are not available.

Thanks for any help.

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