Omega Engineering OME-PIO-D96 manual DEMO5

4.6DEMO5

/* demo 5 : Four interrupt sources				*/
/*	P2C0	: initial Low	, active High	*/
/*	P5C0	: initial High , active Low		*/
/*	P8C0	: initial Low	, active High	*/
/*	P11C0 : initial High , active Low			*/
/* step 1 : run DEMO5.EXE				*/
/* --------------------------------------------------------------				*/
#include "PIO.H"
#define A1_8259 0x20
#define A2_8259 0xA0
#define EOI		0x20
WORD init();
WORD wBase,wIrq;
static void interrupt irq_service();
int irqmask,now_int_state,new_int_state,invert,int_c,int_num;
int CNT_L1,CNT_L2,CNT_L3,CNT_L4;
int CNT_H1,CNT_H2,CNT_H3,CNT_H4;
int main()
{
int i,j;
WORD wBoards,wRetVal,t1,t2,t3,t4,t5,t6;
WORD wSubVendor,wSubDevice,wSubAux,wSlotBus,wSlotDevice;
char c;
clrscr();
/* step1 : find address-mapping of PIO/PISO cards				*/
.
.			/* select card_0 */
/* step2 : enable all D/I/O port
			/* /RESET -> 1	*/
outportb(wBase,1);				*/
/* step3 : configure I/O direction				*/
outportb(wBase+0xcc,0x00);			/* set CN1 as D/I ports */
outportb(wBase+0xdc,0x00);			/* set CN2 as D/I ports */
outportb(wBase+0xec,0x00);			/* set CN3 as D/I ports */
outportb(wBase+0xfc,0x00);			/* set CN4 as D/I ports */

init();

printf("\n***** show the count of pulse *****\n");

for (;;)

{

gotoxy(1,7);

printf("\n(CNT_L,CNT_H)=(%d,%d) (%d,%d) (%d,%d) (%d,%d) %x",CNT_L1,CNT_H1,CNT_L2,CNT_H2,CNT_L3,CNT_H3,CNT_L4,CNT_H4,int_num);

if (kbhit()!=0) break;

}

outportb(wBase+5,0);	/* disable all interrupt */
PIO_DriverClose();
}
/* Use P2C0, P5C0, P8C0 & P11C0 as external interrupt signal		*/
WORD init()
{
OME-PIO-D96 User Manual (Ver.1.1, Mar/2003)		---- 45