ScanResponse Data

[dwilday]

Can you add support for sending Scan Response Data?

[sandeepmistry]

Hi @dwilday,

The scan response currently is sent, with the value of the local name if set.

[dwilday]

Right, I guess I should have been more specific. Can we add support for passing custom data in the Scan Response Data? For example with Adafruit's Bluefruit Library I'm able to call Bluefruit.ScanResponse.addData to add additional data to the scan response.

[NimaaZx]

Hey. Why don't use Ble 5 feature, Secondary advertising channel method instead of scan response and request method ?

[theBASTI0N]

With the scan response is their a method to get the advertised data?

Once I can get that adding additional data, or decoding depending on type of advertisement will be possible?

[sandeepmistry]

Hi @dwilday,

Is there something specific you want to put in the scan response, in the sense should we have a nice friendly API to do that instead of a generic API for raw scan response data?

For a work around for now you could try to use HCI. leSetScanResponseData(length, data);: https://github.com/arduino-libraries/ArduinoBLE/blob/master/src/utility/HCI.h#L53

[marcrupprath]

Hello,
i tried, but it seams that is will be ignored ?
Dou you have a working example for cutom SCAN response data

[polldo]

Hi @marcrupprath ,
a working example for scan response data is already in this library:

ArduinoBLE/src/utility/GAP.cpp

Line 148 in 8a49b8c

if (HCI.leSetScanResponseData(scanResponseDataLen, scanResponseData) != 0) {

As you can see, currently the local name of the device is not directly advertised but it is sent as a scan response data.

[marcrupprath]

To make a long story short i will tr direct you to the discussion:
What are the requirements to use , in our case. the Arduino BLE33 as compatible device for LEGO apps.
We did it for ESP32 as you can see: Think about what is missing to do same with ArduinoBLE

https://www.eurobricks.com/forum/index.php?/forums/topic/179180-powered-up-hub-emulator-with-esp32/
https://github.com/GianCann/ATS/blob/master/ESP32_LEGO/PUPHubEmulator.ino

Have a special Look for advertising data, local name and manucaturer data used in this example.

[polldo]

Hi @marcrupprath ,
currently it is only possible to insert the local name into the scan response data. I will work on extending the possible parameters in the scan response.
However, as a temporarily workaround, you can directly use the HCI.leSetScanResponseData function in this way:

#include "ArduinoBLE.h"

#define SERVICE_UUID "00001623-1212-EFDE-1623-785FEABCD123"

uint8_t scanData[] = {0x02,0x01,0x06,0x09,0xFF,0x97,0x03,0x00,0x41,0x07,0xB2,0x43,0x00};        

void setup()
{ 
  BLE.begin();
  
  // exploit the already existing functions to advertise the service
  BLE.setAdvertisedServiceUuid(SERVICE_UUID);
  BLE.advertise();
  
  // disable advertising to insert the custom scan response data
  HCI.leSetAdvertiseEnable(0x00);
  HCI.leSetScanResponseData(sizeof(scanData), scanData);
  
  // enable advertising
  HCI.leSetAdvertiseEnable(0x01);
}

void loop()
{

}

Also, to access HCI functions you should add #include "utility/HCI.h" in 'ArduinoBLE.h' file

[polldo]

@marcrupprath @dwilday
It is now possible to configure both advertising and scan response data given an already encoded raw data packet.
Also scan response data can be configured in a more flexible way
Implemented here #117
Examples here #134