/***************************************************************************
* This code will generate an interrupt with a status/ID.  Both parameters  *
* can be specified by the user.  The flow of code is as follows:		   *
*																		   *
* 1) InitVXIlibrary														   *
* 2) Get user info on interrupt level and status/ID						   *
* 3) AssertVXIint														   *
* 4) closeVXIlibrary													   *
***************************************************************************/

#include <userint.h>
#include <nivxi.h>
#include <ansi_c.h>
#include <utility.h>

static char ch;    
static int status_id, line, controller;
static UINT32 interrupt;
static NIVXI_STATUS Status;

void main ()
{
	Cls();						//clear STDIO window
	
	if ( InitVXIlibrary() )		//this function must be called
	{
		MessagePopup ("Error", "Unable to initialize VXI library... exiting");
		exit (0);	  //if can't initialize library -> quit code
	}
	
	/*
	 * Allow user to specify which interrupt to assert and status/ID.
	 */
	printf ("Which interrupt would you like to assrt? (1-7) >> ");
	scanf ("%d",&interrupt);	//get interrupt level to assert
	printf ("What is the status ID? 0x");
	scanf ("%x",&status_id);	//get status/ID to use
	
	/* 
	 * This section actually asserts the VXI interrupt.  The function has
	 * the following parameters:
	 *
	 * controller: specifies the logical address of the controller to use
	 * interrupt:  specifies which interrupt level to assert
	 * status_id:  specifies the status/ID to be presented during the 
	 *             IACK cycle
	 */
	controller = -1;  //use default controller.
	Status = AssertVXIint (controller, interrupt, status_id);
	
	if ( Status )
	{    //error asserting interrupt.
		printf ("\nUnble to assert interrupt %d.\n", interrupt);
	}
	else
	{	 //successfully asserted interrupt.
		 printf ("\nInterrupt %d was successfully asserted.\n", interrupt);
	}
	
	printf ("<Press any key to quit>");
	getchar ();
	scanf ("%c", &ch);   //wait for user to hit a key to quit
	
	CloseVXIlibrary();   //close down the VXI library
}