Omega OME-PIO-D144, Hardware Manual

Page: 41 / 53

4.4 Demo3: Interrupt demo1
/* ----------------------------------------------------------- */
/* demo 3 : count high pulse of CN1_PC0 */
/* (initial Low & active High) */
/* step 1 : run demo3.exe */
/* ----------------------------------------------------------- */
#include "PIO.H"
#define A1_8259 0x20
#define A2_8259 0xA0
#define EOI 0x20
WORD init_low();
static void interrupt irq_service();
int COUNT,irqmask,now_int_state;
WORD wBase,wIrq;
int main()
{
int i,j;
WORD wBoards,wRetVal;
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); /* port_0 to port_5 are all input */
printf("\n(4) *** show the count of High_pulse **\n");
init_low();
for (;;)
{
printf("\nCOUNT=%d",COUNT);
if (kbhit()!=0) {getch(); break;}
OME-PIO-D144 User’s Manual (Ver.2.1, Sep/2001) ----- 39
}