Multiple point-to-point links

RE: Multiple point-to-point links

Hung Bui — Thu, 20 Jul 2017 07:17:26 GMT

ESB is also bi-directional. Through put on ESB can get to 700kbps with 1Mbps mode and 1.2kbps with 2Mbps mode. I'm not so sure about Gazel, but it should be able to handle 200kbps. And you are right that ESB doesn't have encryption supported, implementation on application level needed. If you don't plan to have multiple client, no more than two, Gazel perfectly fits.

I'm not so good at the pricing, so yes, you should talk to our sale representative/distributor. You can find the list of distributor for your area in the Distributors section in the footer of our website.

RE: Multiple point-to-point links

abc — Wed, 19 Jul 2017 15:30:57 GMT

Concerning nRF24 vs nRF5x, I am mainly looking at cost. I plan to have a 5-10k initial run of the above system, and if nRF24 (non-SoC) is cheaper than nRF5x by $0.50, I think it makes sense to go with the nRF24. Additionally, the uC features of the nRF5x are overkill for nodes 1 and 2. If this is the wrong venue to ask such questions, maybe I should talk to an application/technical sales engineer?

RE: Multiple point-to-point links

abc — Wed, 19 Jul 2017 15:28:11 GMT

Thanks for the links. I'll take this as a confirmation that the throughput can be handled. You mention using ESB, which I understand is a pared down version of Gazell. Would Gazell be overkill in this case? I like that it has better interference handling, as well as bi-directional and encryption support.

RE: Multiple point-to-point links

Hung Bui — Wed, 19 Jul 2017 09:12:19 GMT

I don't see any problem with the design.

Yes, you can use ESB protocol between 1, 3, 2 and use BLE between 3 and 4.

You can use nRF24 on 1 and 2, but nRF5x is recommended as they are newer chip and can provide extra future prove if you gonna upgrade the protocol later on (OTA DFU supported)

We have example for multiprotocol concurrent support. You can have a look here and here.