Is it possible to temporarily "pause" the NUS service?

[Chris]

I'm using a nRF51822 (with SDK 10) and the Nordic UART Service to provide transparent UART communications with a host CPU. However, occasionally it is necessary for the host CPU to send configuration commands and get status information to/from the nRF51 via the UART. To avoid conflicts I'm thinking of implementing some kind of configuration mode that I can put the nRF51 into temporarily (probably for less than a second).

This raises the question of how to deal with any NUS data that is received while the nRF51 is in configuration mode. Obviously I could buffer the data, but alternatively is there any way to "pause" the NUS service so that the remote peer is inhibited from sending data for a short period of time?

[Susheel Nuguru]

Hmm,

As long as the peer is connected and can see that the service and characteristic is available, it cannot be stopped from sending data.

You could disconnect, handle UART commands and connect again after commands are received.

or more easier way is to buffer the incoming data while UART is in use to receive commands.

/Susheel

[RK]

Or add another characteristic to the service, a simple one with some flags in there to tell the sending device to stop sending stuff please. Sort of emulated RTS/CTS. Set the flag, give it some reasonable timeout or have it set a flag back to you to say it's stopped, then go do your thing.