Omega OME-PIO-D144 - Manual (Page 43)

4.5 Demo4: Interrupt demo2
/* -----------------------------------------------------------*/
/* demo 4 : count low pulse of PC0 */
/* (Initial High & active Low) */
/* step 1 : run demo4.exe */
/* ---------------------------------------------------------- */
#include "PIO.H"
#define A1_8259 0x20
#define A2_8259 0xA0
#define EOI 0x20
WORD init_high();
WORD wBase,wIrq;
static void interrupt irq_service();
int COUNT,irqmask,now_int_state;
int main()
{
int i,j;
WORD wBoards;
WORD wSubVendor,wSubDevice,wSubAux,wSlotBus,wSlotDevice;
char c;
DWORD dwVal;
clrscr();
PIO_DriverInit(&wBoards,0x80,0x01,0x00);
printf("\n(1) Threr are %d OME-PIO-D144 Cards in this PC",wBoards);
if ( wBoards==0 )
{
putch(0x07); putch(0x07); putch(0x07);
printf("(1) There are no OME-PIO-D144 card in this PC !!!\n");
exit(0);
}
printf("\n(2) Show the Configuration Space of all OME-PIO-D144:");
for(i=0; i<wBoards; i++)
{
PIO_GetConfigAddressSpace(i,&wBase,&wIrq,&wSubVendor,&wSubDevice,
&wSubAux,&wSlotBus,&wSlotDevice);
printf("\nCard_%d: wBase=%x,wIrq=%x,subID=[%x,%x,%x],SlotID=[%x,%x]"
,i,wBase,wIrq,wSubVendor,wSubDevice,wSubAux,wSlotBus,wSlotDevice);
}
/* select card_0 */
PIO_GetConfigAddressSpace(0,&wBase,&wIrq,&wSubVendor,&wSubDevice,
&wSubAux,&wSlotBus,&wSlotDevice);
printf("\n(3) *** Card_0, wBaseAddr=%x ***",wBaseAddr);
COUNT=0;
outp(wBase+0xc8,0xff); /* CN1 to CN2 port are all input */
printf("\n(4) *** show the count of High_pulse **\n");
init_high();
for (;;)
{
printf("\nCOUNT=%d",COUNT);
if (kbhit()!=0) {getch(); break;}
OME-PIO-D144 User’s Manual (Ver.2.1, Sep/2001) ----- 41
}