ADLINK aTCA-6155 - Manual (Page 74)

60 Watchdog Timer
7.2 Sample Code
This sample code is provided for testing the Watchdog Timer func-
tion of the W83627UHG on the aTCA-6155.
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
#include<dos.h>
void WDTRUN(int config_port,int count_value);
void Enter_W627UHG_Config(int config_port);
void Exit_W627UHG_Config(int config_port);
void main(int argc,char *argv[])
{
int number,DevID1,DevID2,chipflag=0;
int ioport = 0x4E;//Default config_port = 0x4E
if((argc==1) || ((argc == 3)&& (*argv[2] != 'i')) ||
(argc>3))
{
printf("ADLINK Watchdog Timer Utility of aTCA-
6155.\n\n");
printf(" Usage: WDT6155 value [i]\n");
printf(" value is from 1 to 15300, the unit is
second.\n");
printf(" Write 0 will disable watchdog
timer.\n\n");
printf(" i - change IO port to 0x2E. Default
is 0x4E.\n");
exit(1);
}
else
{
if(argc==3) ioport=0x2E;
//Detect W83627UHG.
Enter_W627UHG_Config(ioport);
//Get Chip ID Hi Byte = 0xA2, Chip ID LO Byte = 0x3x
outportb(ioport, 0x20);
DevID1 = inportb(ioport+1);
outportb(ioport, 0x21);
DevID2 = inportb(ioport+1);
if((DevID1 == 0xA2) && ((DevID2 & 0xF0) == 0x30))
chipflag = 1;