How to use gzp for one nRF24 Dongle to pair two nRF52

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

laurentc — Wed, 01 Feb 2017 16:00:53 GMT

Hello, So, in this context, you would have the device request for a free pipe number (using the encrypted pipe, at the end of pairing) and the host would Ack that number (or pipe address). Then, does gzl manage magically everything ? I bet no. If I want to manage up to 2 devices simultaneously, I expect that I have to set all the timeslot and synchronization configuration from the start so that they can share the bandwidth. Right ? Is there any tool that can help with that ? Where I would say : I want to sustain such bitrate on a pipe, and another bitrate on a second pipe. Especially NRF_GZLL_DEFAULT_TIMESLOT_PERIOD and NRF_GZLL_DEFAULT_TIMESLOTS_PER_CHANNEL. I find it hard to guess the right values to choose.

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

Chaw — Mon, 19 Dec 2016 00:23:37 GMT

ok, thanks, I will try to test it .

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

Hung Bui — Fri, 16 Dec 2016 10:07:08 GMT

Hi Chaw,

Yes, you are correct, I was thinking on security point of view. But if you want to use pairing as to do the dynamic configuration such as exchange system address, frequency hopping table, then it's a good idea to use gzll_dynamic_pairing then transfer data via unencrypted pipes (note that each device would need one unencrypted pipe to be able to communicate concurrently. )

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

Chaw — Fri, 16 Dec 2016 01:35:16 GMT

my app scenirao is that I want to add gzll_pairing, my product maybe very many same devices(nRF52 and nRF24), if only gzll, it can be not good.

So I need that: first, gzll_dynamic_pairing working, then transfer data via uncrypted data on UNENCRYPTED_DATA_PIPE, is that possible?

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

Hung Bui — Thu, 15 Dec 2016 09:44:44 GMT

In our gzp example, for example gzll_dynamic_pairing, we do show both type, sending crypt data and sending uncrypted data on UNENCRYPTED_DATA_PIPE. By design pipe 2-8 can be used as UNENCRYPTED_DATA_PIPE.

Using gzp without encryption is no better than using gzll, you can think of using gzll directly.

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

Chaw — Thu, 15 Dec 2016 01:57:41 GMT

Thanks. Could you share how to disable gzp encryption for nRF52 and nRF24?

And I check SDK example, nRF52 gzp Device use encryption, where can I find gzp demo with no encryption?

RE: How to use gzp for one nRF24 Dongle to pair two nRF52

Hung Bui — Wed, 14 Dec 2016 11:14:37 GMT

Hi Chaw,

Unfortunately, Gazell pairing library only support one encrypted pipe.

If you can use gzp but with no encryption then it's ok to have more than one device. Otherwise you would need to implement your own pairing library and base your protocol on normal gazell/ESB.