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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
I think as far as Bluetooth is concerned, Espruino is the 'app'. Doing it in the handler matches what we do for other Bluetooth events too (eg write response), and also what other Nordic example code does.
IMO it's got to be 'A'. We can't have just the first indication sending and then subsequent ones just not working without any warning to the user - that's going to be extremely frustrating for pretty much all users.
... and even if you did send a response in JS, if for some reason your code had an exception before calling it, it'd 'lock up' the connection until you reconnected.