@Override
public void shutdown() {
// prevent reentrant invocation
if (isShutdown()) return;
// perform shutdown login in base
super.shutdown();
// if a monitor is running, then shut it down now
if (monitor != null) {
// shutdown monitoring thread
monitor.shutdown();
monitor = null;
}
}
@Override
public void unexport(Pin pin) {
super.unexport(pin);
setMode(pin, PinMode.DIGITAL_OUTPUT);
}
@Override
public void export(Pin pin, PinMode mode) {
// make sure to set the pin mode
super.export(pin, mode);
setMode(pin, mode);
}