adding scan response

RE: adding scan response

Ole Morten — Thu, 22 Aug 2013 07:03:15 GMT

This isn't publically available, and was just given to the participants in a previous training session.

RE: adding scan response

steven — Thu, 22 Aug 2013 04:13:56 GMT

hi, where can i download training document ?

RE: adding scan response

andy2003hunan — Thu, 22 Aug 2013 00:04:07 GMT

Ok,i got it.TKS

RE: adding scan response

Ole Morten — Wed, 21 Aug 2013 08:59:08 GMT

And as I said, I edited my previous answer trying to make it better instead of posting a new one. Please take a look at the second paragraph in the answer above: https://devzone.nordicsemi.com/index.php/adding-scan-response#reply-927 If anything is still unclear, it would have been useful if you could be a little more specific in what you actually need to know.

RE: adding scan response

Carles — Wed, 21 Aug 2013 07:04:17 GMT

The contents of a Scan Response packet, as Ole Morten pointed out, are exactly the same as the Advertisement packet, in the same format. It's just additional space for you to add data. Just consider it an extension of the advertisement packet, extra room.

RE: adding scan response

andy2003hunan — Wed, 21 Aug 2013 06:40:51 GMT

could you tell me?where is the answer? tks

RE: adding scan response

Ole Morten — Mon, 19 Aug 2013 07:18:35 GMT

I added a paragraph to my other answer to try to clarify this. Let me know if anything is still unclear.

RE: adding scan response

andy2003hunan — Fri, 16 Aug 2013 13:55:20 GMT

maybe you have misunderstood my point.i mean what is the content in the scan response ,what kinds of massage should the NRF51822 sent to the central? tks!

RE: adding scan response

Ole Morten — Fri, 16 Aug 2013 10:39:29 GMT

A scan response can be added by passing a pointer to a second ble_advdata_t structure to ble_advdata_set().

The contents of the scan response can be freely chosen by the application. Since there is room for only 31 bytes in the advertisement package, it might be useful to add further data to the scan response, if for example the device has many services and a long name that can't fit in the 31 bytes. There is no requirement to have a scan response, and if your application can fit all the data it needs to advertise in the advertisement package, there is no benefit in adding a scan response.

We don't have any such app notes yet, but are working on one internally. For now, the only thing I can recommend is to make sure you know embedded C well, including usage of structs and pointers, and look closely at the examples provided. By starting in main.c and looking on the different functions that are called, and the fields of different structs, it shouldn't be too bad to build simple BLE applications.

Edit: Clarify what a scan response can be used for.