PIO-D144 User’s Manual
Page 36 Version: 2.1 Date: 1999/10
4.3 Demo2: Use D/O of CN1~CN6
/* ------------------------------------------------------------ */
/* demo 2 : D/O demo for CN1 ~ CN6
*/
/* step 1 : connect a DB-24C to CN1 ~ CN6 of PIO-D144
*/
/* step 2 : run DEMO2.EXE
*/
/* step 3 : check the LED's of DB-24C will turn on sequentially */
/* ------------------------------------------------------------ */
#include "PIO.H"
int main()
{
int i,j,k,jj;
WORD wBoards,wRetVal;
WORD wBase,wIrq,wSubVendor,wSubDevice,wSubAux,wSlotBus,wSlotDevice;
char c;
clrscr();
PIO_DriverInit(&wBoards,0x80,0x01,0x00); /* for PIO-D144 */
printf("\n(1) Threr are %d PIO-D144 Cards in this PC",wBoards);
if ( wBoards==0 )
{
putch(0x07); putch(0x07); putch(0x07);
printf("(1) There are no PIO-D144 card in this PC !!!\n");
exit(0);
}
printf("\n(2) The Configuration Space -> wBase");
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);
/* step 1: make sure which ports are D/O ports
*/
/* in this demo --> all D/O ports are output port
*/
/* step 2: enable all D/I/O port
*/
outp(wBase,1);
/* enable D/I/O
*/
/* step 3: select the active port
*/
/* step 4: send initial-value to D/O latch register of active port */
/* step 5: repeat for all D/O ports
*/
for (i=0; i<18; i++)
{
outp(wBase+0xc4,i); /* select CN1 to CN6 port
*/
outp(wBase+0xc0,0); /* set 8-bit D/O latch register */
}
/* step 6: configure all I/O port */
outp(wBase+0xc8,0x00); /* CN1 to CN2 port are all output */
outp(wBase+0xcc,0x00); /* CN3 to CN4 port are all output */
outp(wBase+0xd0,0x00); /* CN5 to CN6 port are all output */
/*
K=PA/PB/PC */
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