Echelon Neuron C Manual do Utilizador descarregar pdf (Página 140)

120 Functions

when (nv_update_occurs(nviZone))

{

// New value of nviZone arrived

}

post_events( ) Function

The post_events( ) function defines a boundary of a critical section at which

network variable updates and messages are sent and incoming network variable

update and message events are posted.

The post_events( ) function is called implicitly by the scheduler at the end of

every task body. If the application program calls post_events( ) explicitly, the

application should be prepared to handle the special events online, offline, and

wink before checking for any msg_arrives event.

The post_events( ) function can also be used to improve network performance.

See

The

post_events

( )

Function

in Chapter 7,

Additional Features,

of the

Neuron C Programmer's Guide

for a more detailed discussion of this feature.

Syntax

#include <control.h>

void post_events (void);

Example

boolean still_processing;

...

void f(void)

{

while (still_processing) {

post_events();

...

}

power_up( ) Function

The power_up( ) function returns TRUE if the last reset resulted from a power-

up. Any time an application starts up (whether from a reset or from a power-up),

the when(reset) task runs, and you can use this function to determine whether

the start-up resulted from a power-up.

Syntax

#include <status.h>

boolean power_up (void);

Example

when (reset)

{

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