Echelon Neuron C - Manual (Page 38)

18 Predefined Events
Example
mtimer countdown;
...
countdown = 100;
...
when (timer_expires(countdown))
{
...
}
wink Event
The wink event evaluates to TRUE whenever a Wink network management
message is received from a network tool. The device can be configured or
unconfigured, but it must have a program running on it.
The wink event is unique in that it can evaluate to TRUE even though the device
is unconfigured. This event facilitates installation by allowing an unconfigured
device to perform an action in response to the network tool’s wink request.
Each application implements an application-specific behavior in response to the
Wink message, but all application-specific wink implementations share the same
characteristic: the wink event should trigger a finite, harmless, visual or visual
and audible physical response that allows for unambiguous identification of an
individual physical device.
A typical implementation would flash one of its LEDs for 10 seconds, or show a
similar response.
Note that the wink event and its task can execute when the device is in the
unconfigured state. The application’s implementation of the wink task should,
therefore, not rely on application timers (stimer, mtimer), other when-tasks, or
interrupts.
Syntax
wink
Example
when (wink)
{
...
io_out(io_indicator_light, ON);
delay(...);
io_out(io_indicator_light, OFF);
...
}