===== NOTIFY =====
This command, enable notification events due to status change of the relative GPIx or GPIO pin.\\
Unsolicited events help to monitor inputs without need of a continuous polling.
==== Synopsis ====
GPIO NOTIFY
==== Return ====
OK
==== Events ====
EVNT
==== Example ====
GPIO GPI1 NOTIFY
OK
...
EVNT GPI1 ON
...
GPIO GPIO NOTIFY
OK
...
EVNT GPIO OFF