Advantech ITA-5831 Series, User Manual

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ITA-5831 User Manual 78
Example Program
//Wait IBF Empty
unsigned char ECWaitIBFEmpty()
{
unsigned char Status;
do{
Status = inportb(0x29A); //Read back Status
} while (Status & 0x02); //If IBF Set?
return Status;
}
//Write non-data command (no data) to EC
void EcWriteCmd (unsigned char cmd)
{
ECWaitIBFEmpty();//Wait IBF Empty outpor tb(0x29A, (unsigned
char)cmd); //Write command
}
//Write standard command (include data) to EC
void IT8528ECSetData (
unsigned char Cmd, //command
unsigned char Addr,//write address
unsigned char Value,//data
)
{
ECWaitIBFEmpty(); //Wait IBF Empty
outportb (IT8528E_HWM_CMD_PORT, Cmd); //Write command
ECWaitIBFEmpty(); //Wait IBF Empty
outportb (IT8528E_HWM_DATA_PORT, Addr); //Write address
ECWaitIBFEmpty();
//Wait IBF Empty
outportb (IT8528E_HWM_DATA_PORT, Value); //Write data
}
//Stop watchdog
void disable_wdt()
{
EcWriteCmd(0x29); //Write command 0x29 to stop watch dog
}