ADLINK aTCA-6155 - Manual (Page 76)

62 Watchdog Timer
temp = inportb(config_port+1);
temp = temp & 0xFD;//disable WDTO to KBRST#.
if(count_value <= 60)
temp = temp & 0xF7;//second.
//Count the timeout value
if(((count_value>60) && (count_value<=15300)) ||
(count_value > 15300))
{
if(count_value > 15300)
count_value = 15300;
counter = count_value/60;
if((count_value%60)>30)
counter=counter+1;
printf("WDT timeout in %d minutes.",counter);
temp = temp | 0x08;//Count in minute mode.
outportb(config_port+1, temp);
}
else
{
if(count_value == 0)
{
counter = count_value;
printf("WDT is Disabled.");
}
else
{
counter = count_value;
printf("WDT timeout in %d seconds.",counter);
outportb(config_port+1, temp);
}
}
//reset WDT by KB, MS interrupt
outportb(config_port, 0xF7);
temp = inportb(config_port + 1);
temp = temp | 0xC0;//Bit 6 = KB interrupt, Bit 7 = MS
interrupt
outportb(config_port+1, temp);
//Write count value
outportb(config_port, 0xF6);
outportb(config_port+1, counter);
}