How to send a scan request/parse a scan response?

[J Ch]

Are there any examples that show an active BLE scanner, sending a scan request to an advertiser, and then parsing the scan response data?

[Matthias Ringwald]

Hi Jacob

When the Bluetooth Controller is configured for active scanning, it will automatically send a scan request when it receives an advertising.
The gap_le_advertisements example configures active scanning. You'll get an GAP_EVENT_ADVERTISING_REPORT or GAP_EVENT_EXTENDED_ADVERTISING_REPORT for Adv as well as Scan Responses. The scan response has a different 'event_type'

Cheers
Matthias

> On 29 Sep 2023, at 13:20, J Ch <jacob.ch...@gmail.com> wrote:
>
> Are there any examples that show an active BLE scanner, sending a scan request to an advertiser, and then parsing the scan response data?
>

> --
> You received this message because you are subscribed to the Google Groups "btstack-dev" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to btstack-dev...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/btstack-dev/d42c3a2c-e830-4b6f-abcd-dc32df59c97bn%40googlegroups.com.

[J Ch]

Thank you Matthias.

On the flip side, do you have an example that shows how to set up a scan response, to be sent by a peripheral?

[J Ch]

Sorry, didn't do my research:

**

 * @brief Set Scan Response Data

 * @param advertising_data_length

 * @param advertising_data (max 31 octets)

 * @note data is not copied, pointer has to stay valid

 */

void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){

    hci_stack->le_scan_response_data_len = scan_response_data_length;

    hci_stack->le_scan_response_data = scan_response_data;

    hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA;

    hci_run();