Contec SPI-Q6700-LLVA, Руководство пользователя

Страница: 79 / 85

- 75 -
Appendix
Appendix D: Digital I/O Setting
Below are the source codes written in C, please take them for Digital I/O
application examples. The default I/O address is 6Eh.
#include <stdio.h>
#include <dos.h>
#include <conio.h>
char APName[]= “\t\tSPI-Q6700-LLVA DIO Testing Program\n”
“\t===========================================
\n” ;
char APHelp[]= “\n - Pass ‘A’ key for inver state of DIO GPIO”
“\n - Pass ‘Esc’ key for Exit”
“\n” ;
void main(void){
char getkey = 0;
// char DIOSTS=0;
// char tempJ=0;
// char tempA=0;
unsigned char GP2xVal,GP3xVal,GP1xVal;
clrscr(); //clear screen
printf(APName);
printf(APHelp);
outportb(0x2e, 0x87); /* entry key*/
outportb(0x2e, 0x87); /* enable configuration */
outportb(0x2e, 0x07); /* point to logical device */
outportb(0x2e+1, 0x06); /* select logical device 6 */