setWatch & analogRead on BBC micro:bit

Hi Gordon,

I can use analogRead on pin D0 of the microbit ok, but setWatch does not seem work using the following code (this code works fine on classic Espruino to detect low to high voltage changes):-

function OnMotion()
{
console.log("Movement detected");
}
setWatch( OnMotion, D0, {repeat:true, edge:"rising"} );

Strangely when I call analogRead after setting the watch it seems to trigger the watch callback into action for one shot.

Regards
David