Portwell WADE-8022, User Manual

Page: 24 / 59

System Installation
WADE-8022 User’s Manual 3-4
3.5 EC WDT
Sample code:
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <dos.h>
#define EC_DATA 0x62
#define EC_CMD 0x66
#define EC_CMD_READ 0x80
#define EC_CMD_WRITE 0x81
#define WDT_MODE 0x06 /* WDT Select mode. */
#define WDT_MIN 0x07 /* Minute mode counter */
#define WDT_SEC 0x08 /* Second mode counter */
/* Use port 62 and port 66 to access EC command / data. */
static int IBF_Check()
{
unsigned char IBF_status;
do
{
delay(2);
outportb
(EC_CMD, IBF_status);
} while (IBF_status & 0x02);
return 1;
}
static int OBF_Check ()
{
unsigned char OBF_status;
do
{
delay(2);
OBF_status = inportb (EC_CMD);
} while (!(OBF_status & 0x01));
return 1;
}
static void Write_EC (unsigned char index, unsigned char data)
{
IBF_Check
();
outportb (EC_CMD, EC_CMD_WRITE);
IBF_Check ();