Instruction Manual

Embedded Controller AEC-6940

Appendix A Programming the Watchdog Timer A-5

A.4 F75111 Watchdog Timer Initial Program

#include <stdio.h>

#include <conio.h>

void Chk_Ready();

#define SMBus_Port 0x500

#define I2C_Addr 0x6E

void main (void)

{

//device ID(smbus):6Eh,index:3h data:3h //Set pin10 as WDTOUT2#

outportb(SMBus_Port+0x04,I2C_Addr);

delay(10);

Chk_Ready();

outportb(SMBus_Port+0x03,0x3);

delay(10);

outportb(SMBus_Port+0x05,0x3);

delay(10);

outportb(SMBus_Port+0x02,0x48);

delay(10);

Chk_Ready();

//device ID(smbus):6Eh,index:37h data:05h //Set Watchdog Timer Rang