nmpButtonPressedReceive (Functionblock)

This function block returns the ID of a pressed configurable button on an NMP.

Note that the ID is only valid after an "NMP Button Pressed" event is raised; the event will be removed when this function block is called.  

Input:

None.

Output:

id : INT

The ID of the pressed button.

ready : BOOL

Declaration:

FUNCTION_BLOCK nmpButtonPressedReceive;
VAR_OUTPUT
   id    : INT;
   ready : BOOL;
END_VAR;

Example:

INCLUDE rtcu.inc
 
VAR
   buttonPress : nmpButtonPressedReceive;
END_VAR;
 
FUNCTION ButtonPressed;
   buttonPress();
   IF buttonPress.ready THEN
      DebugMsg(message := "*** Button Pressed ***");
      DebugFmt(message := "-button=\1", v1 := buttonPress.id);
 
   END_IF;
END_FUNCTION;
 
THREAD_BLOCK navMonitor;
VAR
   event : INT := 0;
END_VAR;
 
WHILE event <> -1 DO
   event := navWaitEvent(timeout := -1);
   CASE event OF
      ...
      11: ButtonPressed();
      ...
   END_CASE;
END_WHILE;
END_THREAD_BLOCK;