private void PollingThreadProc()
{
WaitHandle[] waits = new WaitHandle[] { _pollFlag, _quitFlag };
int waitResult = WaitHandle.WaitAny(waits);
if (waitResult != 0)
{
return;
}
long[] _portDebounce = new long[8];
GetAllPortState(ref _ioStateMap);
_ioModeMap = GetAllPortModes();
while (!_quitFlag.WaitOne(0))
{
if (_pollFlag.WaitOne(25))
{
byte curStates = (byte)SimpleIOClass.ReadPortValue();
if (curStates != _ioStateMap)
{
DateTime now = DateTime.Now;
for (uint i = 0; i < 8; i++)
{
// if ((_ioModeMap & PortMask[i]) > 0 && (_ioStateMap & PortMask[i]) != (curStates & PortMask[i]))
if ((_ioStateMap & PortMask[i]) != (curStates & PortMask[i]))
{
if (now.Ticks - _portDebounce[i] > DEBOUNCE_MIN_TICKS)
{
FirePollEvent(i, ((_ioStateMap & PortMask[i]) == PortMask[i]) ? CtrlState.High : CtrlState.Low);
}
#if DEBUG
Trace.WriteLine(string.Format("Firing Input Poll Event Port {0}, State {1}", i, ((_ioStateMap & PortMask[i]) == PortMask[i]) ? CtrlState.High : CtrlState.Low));
#endif
}
}
_ioStateMap = curStates;
}
}
Thread.Sleep(10);
}
}
public CtrlState GetPortState(uint port)
{
CtrlState retVal = CtrlState.Floating;
if ((_ioModeMap & PortMask[port]) != PortMask[port])
{
throw new ArgumentException("Port must be in input state to be read.", "port");
}
int stateVal = SimpleIOClass.ReadPortValue();
if (stateVal == 0x8000)
{
throw new Exception("Error reading port values");
}
else
{
_ioStateMap = (byte)stateVal;
retVal = ((_ioStateMap & PortMask[port]) == PortMask[port]) ? CtrlState.High : CtrlState.Low;
}
return(retVal);
}
public byte GetAllPortStates()
{
return((byte)SimpleIOClass.ReadPortValue());
}