Lanner LEC-7900 - Manual (Page 30)

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Appendix B. Digital I/O
Introduction
The Digitanl I/O on the rear panel is designed to provide the input and output operations for
the system For sample DIO code, see Digt-IO folder under LEC-7900D Utility on the Driver
and Manual CD.
A DIO sample code:
// Copyright (c) 2009 Lanner Electronic Inc. All rights reserved.
// DIO utility for LEB-7900
//; Output Input
//; GPO30 GPI34
//; GPO31 GPI35
//; GPO32 GPI36
//; GPO33 GPI37
#include <stdio.h>
#include <string.h>
#include <dos.h>
#include <stdlib.h>
#include <inlines/pc.h>
#define INDEX_PORT 0x2e
#define DATA_PORT 0x2f
#define CR20_REG 0x20 //This register indicate the device's ID
#define W83627UHG_ID 0xA2
void help()
{
printf("Lanner Electronics Inc. 2009/10/28\n");
printf("Digital IO control V0.1 for LEB-7900\n");
printf("\n");
}
int main(int argc, char *argv[])
{
int temp6, temp8=0;
help();
//;********** Detect SIO ******************
Enter_Configuation();
if(detect_sio())
{
printf("It's not correct SuperIO, program terminated!!!\n");
printf("Rx20 = %02X\n", read_w83627UHG_reg(0, CR20_REG));
return -1;
}
Exit_Configuation();
Init_WDTO_GPIO_Interface();
//;********************* DIO start
*****************************************************
Enter_Configuation();
//;*********************GPO30 and
GPI34*****************************************************
printf("GPO30(OUT) to GPI34(IN)...\n");
write_w83627UHG_reg(0x07, 0xE1, read_w83627UHG_reg(0x07, 0xE1) | 0x01);
//;Set GPO30 to 1
delay(50);
for(temp6=1; temp6<50; temp6++)