nRF52840 BLE gateway?

[james]

can I use an nRF52840 based BLE gateway? Backhaul would be either 10/100 Ethernet (via Wiznet or Microchip controller chip) or a cellular module. Is the clock speed sufficient? Is there enough RAM?

[james]

Use the nrf52840 as a BLE gateway which means wirelessly connect BLE sensor nodes to the Ethernet (IP) either with cellular, WiFi, of wired Ethernet backhaul. I would like to connect up to 20 BLE beacon endpoint nodes.

[awneil]

james said:

which means

It may be what you want to do - but it isn't inherent in the words themselves.

We are not mind readers - that's why you need to explain what you're thinking of!

james said:

wirelessly connect BLE sensor nodes to the Ethernet (IP) either with cellular, WiFi, of wired Ethernet backhaul. I would like to connect up to 20 BLE beacon

Should be doable.

But not a beginner's project.

[james]

Rigado uses an NXP iMX6 A7 with MTG based by module so not quite what I am looking to do.i want to use the 52840 M4 with either a cell back haul or wired 10/100 Ethernet via SPI to Ethernet controller chip such as wiznet w5500. 

[awneil]

james said:

wiznet w5500

You mean This: https://www.wiznet.io/product-item/w5500/

So, in either case, all the "backhaul" protocol is handled externally from the nRF chip.

Then the nRF has little to do other than the BLE stuff - so shouldn't be a problem ... ?

[james]

yes exactly. There is a Wiznet W5500 + nRF52832 based BLE gateway with wired Ethernet and Wifi project posted which is what I am trying to understand how capable this is in terms of how many BLE nodes it can handle and how quickly data can be stored and/or pushed up to some cloud-based network server. 

http://wizwiki.net/wiki/doku.php?id=oshw_using_wiznet:bletoethernet#hardware

[awneil]

The max number of BLE links is stated in the SoftDevice specification.

[james]

ok yes then 20 simultaneous connections. got it. thanks

[awneil]

If that resolves the question, please Verify the answer: