Access DIO from Visual Studio 2005 (VB Project)

Hello

What means the X's in your description in the DWORD Value?:
value UseAsIO DWORD 0xFFXXFF

Is it right, that there comes new Reg-values when I wont to use your example?

Timo

Hello

Is it correct, that first, I need the DIGITIO.DLL on my picMod in \FFDISK or \Windows? Because I don't have anything there.

' P/Invoke calls to DIGITIO.DLL (digital IO driver) via win32 API (coredll.dll)
' CreateFileW()

Timo

Hello

Thank you for your example. With your example, we can OPEN the following Ports as OUTPUT:
IO_A: 1, 2, 3, 4
IO_B: 1

But what we need is
IO_B: 2 (A=0, B=4)

What does that mean:
' PORT 33221100

Why, we can not change the "0" Binary to a "1" to make it as OUTPUT:
' reg set value UseAsIOA DWORD 0x0003E000
' reg set value DataDirA DWORD 0x0003E000 '1111110000000000000 --> 7E000 --> 253952

############################################3

For what is the value bValue:
Public Class Form1
Dim DIO As New DIOport
Dim ValuePort1 As Byte = 0 'tree msb bits from porta1
Dim ValuePort2 As Byte = 1 'two lsb bits from porta2

Sub Write(ByVal bValue As Byte)

DIO.SetPort(1)
DIO.WriteByte(ValuePort1)
Label1.Text = ValuePort1.ToString()

DIO.SetPort(2)
DIO.WriteByte(ValuePort2)
Label3.Text = ValuePort2.ToString()

'ValuePort1 <<= 1
If ValuePort1 = 0 Then
ValuePort1 = 64
End If

If ValuePort2 = 1 Then
ValuePort2 = 2
Else
ValuePort2 = 1
End If
End Sub

Quote from "Nase"

Why, we can not change the "0" Binary to a "1" to make it as OUTPUT:

It has no effect when you change the registry at runtime. The driver is loaded when the system starts and then reads the registry settings. They can not be changed later anymore. Therefore you have to set the registry to reflect your needs, and then reboot your board. Now the new settings should take effect.

Regards,

H. Keller

I know this. But the problem is, that we DONT KNOW, what value is to set in the registry. Because we did't found any document hwo let's us understand, how it works.

Here is my first IO experiment: http://www.fscan.com/MyFirstIO.mp3

Made in VB.NET
Just for fun.

Enjoy

Quote from "Nase"

I know this. But the problem is, that we DONT KNOW, what value is to set in the registry. Because we did't found any document hwo let's us understand, how it works.

Is it really this difficult? Regarding to the document "NetDCU_DeviceDriver_eng.pdf" available on the CD or here:
For each pin there is a bit in the UseAsIOBit entry. If you want to use this pin for I/O, set the bit to 1, otherwise leave it as 0. Then, for any of these pins with the 1-bit, set 0 or 1 in DataDirBit, depending on your need for input (0) or output (1). And finally, for all pins with 1-bit for the direction, you have to specify if the port starts with low (0) or high (1) when being initialized. This is set in the entry DataInitBit.

So where is the problem?

Regards,

H. Keller

I received a CD from F&S and a PicoMod1. The correct file name on the CD is: "NetDCU_DeviceDriver.pdf". But it is under the folder "NetDCU". and under the folder "German", there is no german description. I program in VB.NET and all examples are in C++. There are more than 15 documents with about 50 pages and every time I have to think, if it is the right document for my PicoMod. Last time we discuss about this and we did't know some settings eighter with Mr. Zutter.

I'm not a machine.

Quote from "Nase"

I received a CD from F&S and a PicoMod1. The correct file name on the CD is: "NetDCU_DeviceDriver.pdf". But it is under the folder "NetDCU". and under the folder "German", there is no german description.

Sorry, my mistake. I hadn't realized that it was for the PicoMOD1. Then the correct file is PicoMOD1_DeviceDriver_eng.pdf
As the PicoMOD1 has more I/O pins than the standard NetDCUs, there is in fact a difference when using them. Mr. Zutter already explained that.

Quote

I program in VB.NET and all examples are in C++.

Yes, this is a big problem. The .NET languages are getting more and more popular, but the drivers provide their interface in C only. However as all drivers use the file interface (CreateFile(), ReadFile(), WriteFile(), SetFilePointer(), DeviceIoControl(), CloseHandle()), using a .NET language you have two ways of accessing them:

• Use the .NET file functions. They'll go down to the basic C interface in the end anyway.
• Write your own wrapper functions to call the C file functions from coredll directly.

It is very difficult to provide all documents in all languages and for all programming environments. For example if we have one document for C/C++, one for C#, one for VB, and then each of them at least in German and English, this is quite a lot to do.

Therefore our main goal is to provide the English documentation and the C interface as a minimum. English is understood by most software people and this is also the reason why we prefer English here in the forum. And when the C interface is known, you can usually transfer the call to .NET somehow rather easily.

Best regards,

H. Keller

Hello

Thank you both for your response. I'll try it next week.

Of course you can not write all codes in any language. For that, it's just fine to have access to this forum

Timo

Hallo!
Was ist zur Benutzung dieses Beispiels per WinNDCUCfg einzustellen?

2-9(OUT) und 17-24(IN)? (& Haken in Generate...)

Bei der Ausführung bekomme ich nur einen WinMain Fehler.

In meiner Anwendung in C# bleibe ich bei dem ReadFile hängen, mit dem LastError 6. Woran kann dies liegen?

Welches der Beispiele(auch AnalogIO) ist in C#? Habe leider keines gefunden.

MfG

Danke soweit, jedoch hab ich noch folgendes:

Read lt. DIO_VBTest:

mit der Funktion:

Leider erhalte ich jedoch einen LastError 87, sprich falsche Parameter. und als Wert von data[0] = 255. Sehen Sie den Fehler?

sorry, falsche Funktion, das oben war nur ein Versuch:

Quote

public byte ReadByte()
{
int error = GetLastError();

byte[] data = new byte[1];
uint NumberOfBytesToRead = 1;
uint NumberOfBytesRead = 0;

int value = 0;

value = ReadFile(hPort, data, NumberOfBytesToRead, NumberOfBytesRead, IntPtr.Zero);
error = GetLastError();

if (value == 0)
{
Console.WriteLine("Read failed");
Console.WriteLine("GetLastError: " + error);
}

return data[0];
}

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