Disabling notifications properly on nrf8001

[Will]

Hi,

So I'm using a BT 4.0 dongle (Laird BT820) to set up a LE notification loop with the nrf8001 (RedBearLab shield on Arduino) using gatttool on Ubuntu 12.04. This works fine, but when it comes to trying to write to the handle again to disable notifications, I get a "connect: Device of resource busy (16)" error.

Is there a way to achieve what I'm trying to do properly without reverting to something like 'ctrl-c'?

Thanks, Will

[David Edwin]

Unfortunately I suspect this to be a gatttool problem. It may be possible to have an additional characteristic to signal to the application that data should not be sent, instead of just disabling notifications.