IBASE Technology ET875 Series, User Manual

Page: 56 / 58

48 ET875 Series
User’s Manual
bTime = strtol (argv[1], endptr, 10);
printf("System will reset after %d seconds\n", bTime);
if (bTime)
{ EnableWDT(bTime); }
else
{ DisableWDT(); }
return 0;
}
//---------------------------------------------------------------------------
void EnableWDT(int interval)
{
unsigned char bBuf;
bBuf = Get_F81804_Reg(0x2B);
bBuf &= (~0x20);
Set_F81804_Reg(0x2B, bBuf); //Enable WDTO
Set_F81804_LD(0x07); //switch to logic device 7
Set_F81804_Reg(0x30, 0x01); //enable timer
bBuf = Get_F81804_Reg(0xF5);
bBuf &= (~0x0F);
bBuf |= 0x52;
Set_F81804_Reg(0xF5, bBuf); //count mode is second
Set_F81804_Reg(0xF6, interval); //set timer
bBuf = Get_F81804_Reg(0xFA);
bBuf |= 0x01;
Set_F81804_Reg(0xFA, bBuf); //enable WDTO output
bBuf = Get_F81804_Reg(0xF5);
bBuf |= 0x20;
Set_F81804_Reg(0xF5, bBuf); //start counting
}
//---------------------------------------------------------------------------
void DisableWDT(void)
{
unsigned char bBuf;
Set_F81804_LD(0x07); //switch to logic device 7
bBuf = Get_F81804_Reg(0xFA);
bBuf &= ~0x01;
Set_F81804_Reg(0xFA, bBuf); //disable WDTO output
bBuf = Get_F81804_Reg(0xF5);
bBuf &= ~0x20;
bBuf |= 0x40;
Set_F81804_Reg(0xF5, bBuf); //disable WDT
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------