Multiple BLE UART Peripherals -> Single Phone Application

RE: Multiple BLE UART Peripherals -> Single Phone Application

scott.williams.113 — Wed, 12 Sep 2018 01:50:07 GMT

Thanks for your information Martin. Really appreciate it. I'll have a go and just hope for the best, I guess!

RE: Multiple BLE UART Peripherals -> Single Phone Application

MartinBL — Tue, 11 Sep 2018 12:28:37 GMT

Hi,

In general the NUS service is like any other service and it shouldn't be a problem to implement multiple instances of it on your phone. I'm no iOS programmer and the guy wrote nRF Toolbox for iOS is on holiday at the moment, so I can't comment on how re-usable the git hub code is though.

What might be stopping you is indeed, as awneil says, limitations on your phone. It is not a given that every chip set and implementation of the BLE stack support more than one link.

RE: Multiple BLE UART Peripherals -> Single Phone Application

scott.williams.113 — Tue, 11 Sep 2018 07:56:20 GMT

1. Oh yeah, I mean at the end of the day a string is just binary that has been encoded yeah. I'm just saying strings as a general term since characters are conveniently 1 byte each, that's all.

2. Yeah I'm aware this is also an issue regarding the phone itself. But the fact is that Nordic UART Service is a protocal developed by Nordic, and I will be using the Toolbox source code as guide on how to implement this in an app. So the questions is definitely for Nordic whether the NUS method/protocal can be used for multiple devices on 1 phone. I believe so anyway.

RE: Multiple BLE UART Peripherals -> Single Phone Application

awneil — Tue, 11 Sep 2018 07:54:02 GMT

[quote userid="73036" url="~/f/nordic-q-a/38398/multiple-ble-uart-peripherals---single-phone-application"]using the BLE UART Example to base my data transfer on (i.e. sending the analogue data as a string)[/quote]

Not related to your question, but you do realise that the NUS is not limited to strings - it is perfectly usable for binary data?

How multiple connections are (or aren't) handled on the phone is entirely down to the phone - nothing really to do with Nordic.

The place to go would be the iOS developer resources & communities.

Googling "ios multiple ble connections" gives, for instance: https://spin.atomicobject.com/2016/01/20/multiple-ble-devices-in-ios/ (although that's >2 years old).