NRF51 series and BLE 4.1

RE: NRF51 series and BLE 4.1

Marius Heil — Sat, 12 Sep 2015 07:56:57 GMT

Hi, I'd be glad to help. I created FruityMesh as part of my Master Thesis as well ;-)

RE: NRF51 series and BLE 4.1

sidekick — Fri, 11 Sep 2015 20:52:44 GMT

@Marius Heil, No, I haven't tried S130 yet, as so far my engagement with NRF51822 SOC and Softdevice S110 has been only due to the work requirements, however, I'm also a student and planning to work on my Master's thesis this semester, in the area of BLE Mesh network. Sometime back, I skimmed through your FruityMesh implementation, but as I'm not particularly good with C++, hence I didn't studied your implementation in detail. The other implementation that I came across does not seem to utilize BLE 4.1 dual mode capabilities. I'm more inclined towards FruityMesh. I did noticed that you are using S130 as softdevice with NRF51 series SOC, However, after watching the video, I got little confused with the BLE 4.1 support in NRF51. Thank you for clearing my doubts and I might bug you more in future, in case I start learning BLE Mesh using Fruitymesh :)

RE: NRF51 series and BLE 4.1

Marius Heil — Fri, 11 Sep 2015 13:22:13 GMT

Hi,

have you tried to get the S130 working? One way to check if your chipset supports meshing is to take a look at my open source mesh implementation here ;-)

github.com/.../fruitymesh

Go to the wiki and open the Quick start page: github.com/.../Quick-Start

Flashing the softdevice and fruitymesh will take you about 5 minutes and you can test real fast if your device will support meshing.

Some more info about the connections:

The S130 supports multiple peripheral connections but only one connection to a central. I do not know of any BLE stack that supports this, nor do I think that this will be implemented in the near future.

A stack does not need to be able to connect to multiple centrals at the same time to e compliant with the 4.1 spec.

RE: NRF51 series and BLE 4.1

Anders Strand — Fri, 11 Sep 2015 13:18:10 GMT

Hello.

The information you seek can be found on the S130 page of our infocenter.

To answer your questions:

The S130 is compliant with BLE 4.1 (It is actually even compliant with 4.2)

The S130 can do the following at the same time:

Connect to up to three peripherals
Connect to ONE central
Scan for BLE devices (Observer mode)
Advertise BLE packets (Broadcaster mode)