nRF52840 best / simplest BLE service for data transfer

[Philip]

Hi All.

I have a DK52 project where a peripheral advertises and connects to a central nRF52840 ok. I based it on the multilink_central demo, so have the LED button service setup at the moment.

However it seems like a pretty complicated service just to basically send the state of the push button. I attempted to modify it so I can send big packets of data, but thought there must be a service better suited that I can modify instead?

What would be the best service in the examples to use / base a service on for the following;

1 - Send large arrays/packets of bytes from peripheral to central (max that can be sent in one message) to get best through put.

2 - Send some basic status information both ways.

Thanks

Phil

[Philip]

Thanks for the responses, ill take a look at the UART service. 

By large packets I should have said about 100 Kbps. From what I have read that should be possible over BLE, just need to find the best service for that.

[awneil]

Philip said:

By large packets I should have said about 100 Kbps

Err ... that's a speed - not a size!

Beware that achievable throughput may be limited by the Host; eg, Android/iOS...

[Philip]

Sorry yes I know that's not a size, I should have stated a data rate right at the start rather than packet size, as max packet size is obviously negligible compared to the amount of data going through.

Host is a nRF52840 acting as a ble central, so should be ok hopefully.

I have had a tinker with the UART service a bit, that looks perfect. Fairly easy to understand compared with the button service I was originally looking at.

Thanks all for your help pointing me in that direction.