ADV_IND mode scan request and response, how to trigger the event BLE_GAP_EVT_SCAN_REQ_REPORT?

[liyang]

hi, nordicer:

two device, a peripheral and a apple phone as central. we want to support scan request and response with ADV_IND mode,  I understand as following:

(1) peripheral advertise data

(2) central receive advertising data, and scan request data

(3) perpheral scan response data

we have 3 problems:

(1) how peripheral support the scan request and response?

(2) how peripheral get the scan request data? BLE_GAP_EVT_SCAN_REQ_REPORT?

(3) can central adjust some payload data ? 

[tesc]

Hi,

In our SDK, for the peripheral both advertising and scan request/scan response is handled automatically by the Advertising Module. (I.e. you provide advertising data and scan response data from the application, and the Advertising Module and the SoftDevice handles the rest.)

I do not quite understand what you mean by "can central adjust some payload data". If you mean "Can the central send payload together with the scan request" then the answer is "no". The scan request does not have any payload.

Regards,
Terje

[liyang]

I want to get the scan request event and get the address data

[tesc]

Hi,

The BLE_GAP_EVT_SCAN_REQ_REPORT is a BLE event similar to BLE_GAP_EVT_CONNECTED, BLE_GAP_EVT_DISCONNECTED, etc., and you can handle it in any BLE event handler by adding a case for it.

See for instance the function ble_evt_handler() in main.c for the ble_app_hrs example how other BLE events are handled. You can for instance add handling of BLE_GAP_EVT_SCAN_REQ_REPORT events there, similar to handling of the other events.

Regards,
Terje

[liyang]

default peripheral ble scan request enable ?

[tesc]

Hi,

Sorry, I do not quite understand your question. Can you elaborate?

Regards,
Terje

[liyang]

I have already capture the scan request and resoonse from my peripheral with nRF Sniffer tool.

But in my application code, I don't get the BLE_GAP_EVT_SCAN_REQ_REPORT event, why? 

[liyang]

I have get the result, reference:

devzone.nordicsemi.com/.../can-two-masters-connect-two-slaves-at-the-same-time

[tesc]

Hi,

I think I understand what you mean now.

Yes, I see that for SoftDevices up to versions 5.x you need to enable the option for BLE_GAP_OPT_SCAN_REQ_REPORT in order for the SoftDevice to generate those events.

For SoftDevices versions 6.x this was changed and there is now a flag scan_req_notification in ble_gap_adv_params_t that you must set in order to get the BLE_GAP_EVT_SCAN_REQ_REPORTs. See the migration document for the SoftDevice for details.

Regards,
Terje