AAEON PFM-HDS - Manual (Page 86)

P C / 1 0 4 M o d u l e P F M - H D S
Appendix A Programming the Watchdog Timer A-5
WDTSetBit( TimerReg, ModeBit, ModeVal );
// WDT output mode set to active low
WDTSetBit( TimerReg, PolarityBit, PolarityVal );
// WDT output pulse width is 25ms
WDTSetBit( TimerReg, PSWidthBit, PSWidthVal );
// Watchdog WDTRST# Enable
WDTSetBit( DevReg, WDTRstBit, WDTRstVal );
}
VOID WDTClearTimeoutStatus() {
WDTSetBit( TimerReg, StatusBit, 1 );
}
**************************************************************************
*****
**************************************************************************
*****
VOID WDTWriteByte(byte Register, byte Value) {
IOWriteByte(WDTAddr+Register, Value);
}
byte WDTReadByte(byte Register) {
return IOReadByte(WDTAddr+Register);
}
VOID WDTSetBit(byte Register, byte Bit, byte Val) {
byte TmpValue;
TmpValue = WDTReadByte(Register);
TmpValue &= ~(1 << Bit);
TmpValue |= Val << Bit;
WDTWriteByte(Register, TmpValue);
}
**************************************************************************
*****