How shall i define Service Data in BLE Scan Response Data ?

[Deep Patel]

This is the implemenatation spec for GATT server database (reader) firmware i am working on.

I have implemented advertisement packet using nRF Connect SDK latest.

Not sure how to declare 8-byte Service Data ? 

I have the 8-byte value with me.

This is how i have implemented

            uint8_t reader_serial_number[8] = some value;

            const struct bt_data service_sd[] =

            {

                BT_DATA_SVC_DATA16, 8, reader_serial_number

            };

But in the mobile app it shows like

Service Data: UUID: first two bytes (flipped bytes) and Data: Last 6 bytes correct order

Not sure what is wrong. Please explain and correct my implementation.

Thanks.

[Deep Patel]

In scan response Data.

Your response has a syntax error. 

[Deep Patel]

Ok, i got it to work by trying various syntax

            const struct bt_data service_sd[] =

            {

               

                BT_DATA_BYTES(BT_DATA_SVC_DATA128, BT_UUID_SERVICE_VAL, reader_serial_number[0],

                                                                                                                                       reader_serial_number[1],

                                                                                                                                       reader_serial_number[2],

                                                                                                                                       reader_serial_number[3],

                                                                                                                                      reader_serial_number[4],

                                                                                                                                      reader_serial_number[5],

                                                                                                                                      reader_serial_number[6],

                                                                                                                                      reader_serial_number[7]),

            };

The field 'service data' has two propoerties to fill in : UUID and Data. UUID is same as Primary Service