public async Task Initialise()
{
_eventBuffer.Clear();
_controlRegister = 0x00;
_nextKeyPressId = 0;
_current = null;
await SendControlRegister();
}
public void Write(ushort address, byte value)
{
lock (this)
{
switch (address)
{
case STATUS_REGISTER:
_current = null;
break;
case CONTROL_REGISTER:
_controlRegister = (byte)(value & 0x7);
AsyncUtil.RunSync(SendControlRegister);
break;
}
}
}
public byte Read(ushort address)
{
lock (this)
{
Debug.Assert(address < Size);
KeyboardEvent evt;
switch (address)
{
case CONTROL_REGISTER:
return(_controlRegister);
case STATUS_REGISTER:
if (_eventBuffer.Read(out evt))
{
_current = evt;
return(evt.Status);
}
_current = null;
break;
case DATA_REGISTER:
if (_current != null)
{
return(_current.Data);
}
return(0x00);
case SCAN_CODE_REGISTER:
if (_current != null)
{
return(_current.Data);
}
return(0x00);
}
}
return(0x00);
}