private UInt32 GetPortValue(UInt16 portAddress)
{
UInt32 portValue = 0;
if (hMod != IntPtr.Zero)
{
if (this.GetPortVal == null)
{
IntPtr pFunc = GetProcAddress(hMod, "GetPortVal");
if (pFunc != IntPtr.Zero)
{
this.GetPortVal = (GetPortValType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(GetPortValType));
}
else
{
string msg = "GetPortValue(): Unable to lcoate procedure address.";
Console.WriteLine(msg);
// throw new Exception(msg);
}
}
if (!this.GetPortVal(portAddress, &portValue, 1))
{
string msg = "GetPortValue(): Error returned from GetPortVal()";
Console.WriteLine(msg);
// throw new Exception(msg);
}
}
return(portValue);
}
private void btnGetValue_Click(object sender, EventArgs e)
{
IntPtr pFunc = GetProcAddress(hMod, "GetPortVal");
if (pFunc != IntPtr.Zero)
{
UInt16 PortAddr;
UInt32 PortVal;
PortAddr = UInt16.Parse(txtPortAddr.Text, System.Globalization.NumberStyles.HexNumber);
GetPortValType GetPortVal = (GetPortValType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(GetPortValType));
// Call WinIo to get value
//bool Result = GetPortVal(PortAddr, &PortVal, 1);
bool Result = GetPortVal(PortAddr, &PortVal, 4);
if (Result)
{
//txtValue.Text = PortVal.ToString("X");
txtValue.Text = PortVal.ToString("X8");
}
else
{
MessageBox.Show("Error returned from GetPortVal", "DumpPort", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
//等待鍵盤緩衝區為空
private static void KBCWait4IBE()
{
IntPtr pFunc = GetProcAddress(hMod, "GetPortVal");
if (pFunc != IntPtr.Zero)
{
GetPortValType GetPortVal = (GetPortValType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(GetPortValType));
UInt32 PortVal;
do
{
bool flag = GetPortVal(0x64, &PortVal, 1);
}while ((PortVal & 0x2) > 0);
}
}
public void Close()
{
if (hMod != IntPtr.Zero)
{
IntPtr pFunc = GetProcAddress(hMod, "ShutdownWinIo");
if (pFunc != IntPtr.Zero)
{
this.GetPortVal = null;
this.SetPortVal = null;
ShutdownWinIoType ShutdownWinIo = (ShutdownWinIoType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(ShutdownWinIoType));
ShutdownWinIo();
FreeLibrary(hMod);
hMod = IntPtr.Zero;
}
}
}
public bool Open(Form1 form)
{
form1 = form;
if (IntPtr.Size == 4)
{
hMod = LoadLibrary("GPIO32.dll");
}
else
{
hMod = LoadLibrary("GPIO64.dll");
}
if (hMod != IntPtr.Zero)
{
IntPtr pFunc = GetProcAddress(hMod, "InitializeGPIO");
if (pFunc != IntPtr.Zero)
{
InitializeGPIOType InitializeGPIO = (InitializeGPIOType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(InitializeGPIOType));
if (InitializeGPIO())
{
IntPtr pFuncSet = GetProcAddress(hMod, "SetPortVal");
SetPortVal = (SetPortValType)Marshal.GetDelegateForFunctionPointer(pFuncSet, typeof(SetPortValType));
IntPtr pFuncGet = GetProcAddress(hMod, "GetPortVal");
GetPortVal = (GetPortValType)Marshal.GetDelegateForFunctionPointer(pFuncGet, typeof(GetPortValType));
GPIOThread.DoWork += new DoWorkEventHandler(GPIOLoop);
GPIOThread.WorkerSupportsCancellation = true;
return(true);
}
}
}
FreeLibrary(hMod);
return(false);
}
public void Close()
{
if (hMod != IntPtr.Zero)
{
IntPtr pFunc = GetProcAddress(hMod, "ShutdownWinIo");
if (pFunc != IntPtr.Zero)
{
this.GetPortVal = null;
this.SetPortVal = null;
ShutdownWinIoType ShutdownWinIo = (ShutdownWinIoType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(ShutdownWinIoType));
ShutdownWinIo();
FreeLibrary(hMod);
hMod = IntPtr.Zero;
}
}
}
private UInt32 GetPortValue(UInt16 portAddress)
{
UInt32 portValue = 0;
if (hMod != IntPtr.Zero)
{
if (this.GetPortVal == null)
{
IntPtr pFunc = GetProcAddress(hMod, "GetPortVal");
if (pFunc != IntPtr.Zero)
{
this.GetPortVal = (GetPortValType)Marshal.GetDelegateForFunctionPointer(pFunc, typeof(GetPortValType));
}
else
{
string msg = "GetPortValue(): Unable to lcoate procedure address.";
Console.WriteLine(msg);
// throw new Exception(msg);
}
}
if (!this.GetPortVal(portAddress, &portValue, 1))
{
string msg = "GetPortValue(): Error returned from GetPortVal()";
Console.WriteLine(msg);
// throw new Exception(msg);
}
}
return portValue;
}
