Is a nRF52832 right choise in this case?

RE: Is a nRF52832 right choise in this case?

Rasul Kishov — Mon, 22 Feb 2016 12:58:33 GMT

Thank you very much, Øyvind.

RE: Is a nRF52832 right choise in this case?

Rasul Kishov — Mon, 22 Feb 2016 12:32:20 GMT

Hi Jan. My devices are toys and even 35-50ms response time is good enough (but UX will be affected). So do you think I can buy nrf52-DK (which is not easy to get here) and to start my design?

RE: Is a nRF52832 right choise in this case?

Øyvind Karlsen — Mon, 22 Feb 2016 12:28:32 GMT

Hi,

I am not 100% sure on your unmarked boxes, are they some kind of broadcast-mesh(this github project might be interesting for you if so)?

Either way:

Yes, these datarates are easily achieveable by BLE and the nRF52 series. As Jan commented, you might be limited by the smartphone.
This is no problem, for example our tutorial on testing and debugging a BLE service demonstrates a connection from our development kit to a smart phone app that we have developed.
Generally latency is very low, again as Jan said, you might be limited by the smartphone.
The nRF52 is a powerful MCU, as an example of computing power you can check out this recent blogpost. It is also worth noting that the nRF52 has a floating point unit, which makes it very capable.
For a price estimate you will have to contact your regional sales manager, send me a personal message and I will put you in touch.

Best regards,

Øyvind

RE: Is a nRF52832 right choise in this case?

endnode — Mon, 22 Feb 2016 10:59:02 GMT

Hi jimage. Is the picture suggesting that your devices will be consumer/OEM products such as mobile phones running "unknown" BLE stack and locked OS on top of it? Wile your bandwidth requirements are perfectly fine for BLE (also reliability but that would need detailed assessment) using devices with "locked" BLE stack might force you to use their hardcoded "minimal" connection intervals (= you cannot guarantee better response time) which for both Android and iOS is 35-50ms today.

Cheers Jan

RE: Is a nRF52832 right choise in this case?

Rasul Kishov — Mon, 22 Feb 2016 10:50:28 GMT

Thank you awneil. Edited text above: other elements also use BLE but in broadcasting mode and should send messages with as small lag as possible (less than 50 ms) when some of kind event occur (button pressed, for example)

RE: Is a nRF52832 right choise in this case?

awneil — Mon, 22 Feb 2016 10:26:14 GMT

Please describe further the communications between DEV1/DEV2/DEV3 and the unnamed devices to the right. Do they also have to be BLE?