SetValue(TPCANHandle, TPCANParameter, UInt32, UInt32)

PCAN-Basic

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PCAN-Basic Documentation

Sets a configuration or information numeric value within a PCAN Channel.

Syntax

Pascal OO

class function SetValue(
    Channel: TPCANHandle;
    Parameter: TPCANParameter;
    NumericBuffer: PLongWord;
    BufferLength: LongWord
    ): TPCANStatus; overload;

[DllImport("PCANBasic.dll", EntryPoint = "CAN_SetValue")]
public static extern TPCANStatus SetValue(
    [MarshalAs(UnmanagedType.U1)]
    TPCANHandle Channel,
    [MarshalAs(UnmanagedType.U1)]
    TPCANParameter Parameter,
    ref UInt32 NumericBuffer,
    UInt32 BufferLength);

C++ / CLR

[DllImport("PCANBasic.dll", EntryPoint = "CAN_SetValue")]
static TPCANStatus SetValue(
    [MarshalAs(UnmanagedType::U1)]
    TPCANHandle Channel,
    [MarshalAs(UnmanagedType::U1)]
    TPCANParameter Parameter,
    UInt32 %NumericBuffer,
    UInt32 BufferLength);

Visual Basic

<DllImport("PCANBasic.dll", EntryPoint:="CAN_SetValue")> _
Public Shared Function SetValue( _
    <MarshalAs(UnmanagedType.U1)> _
    ByVal Channel As TPCANHandle, _
    <MarshalAs(UnmanagedType.U1)> _
    ByVal Parameter As TPCANParameter, _
    ByRef NumericBuffer As UInt32, _
    ByVal BufferLength As UInt32) As TPCANStatus
End Function

Parameters

Parameters	Description
Channel	The handle of a PCAN Channel (see TPCANHandle).
Parameter	The code of the value to be set (see TPCANParameter).
NumericBuffer	The buffer containing the numeric value to be set.
BufferLength	The length in bytes of the given buffer.

Returns

The return value is a TPCANStatus code. PCAN_ERROR_OK is returned on success. The typical errors in case of failure are:

PCAN_ERROR_ILLPARAMVAL:	Indicates that the parameters passed to the method are invalid. Check the parameter 'NumericBuffer'; it should point to an integer buffer.
PCAN_ERROR_CAUTION:	The configuration of a parameter failed due to a no more existing channel. The parameter has been reset on all existing channels.
PCAN_ERROR_INITIALIZE:	Indicates that the given PCAN channel was not found in the list of initialized channels of the calling application.
PCAN_ERROR_ILLPARAMTYPE:	Indicates that the requested information is not available for the given PCAN Channel. Check the value of 'Parameter'; some values are not available for all PCAN-Channels or cannot be set.
PCAN_ERROR_ILLOPERATION:	An underlying process that is generated by a call to this method with the current parameters, is temporarily not allowed. The configuration in relation to the used TPCANParameter must be checked.

Remarks

Use the method SetValue to set configuration information or environment values of a PCAN Channel as parameters like the Message Filter and values like a custom entry in the log file of PCAN-Basic. Take in account that not all parameters are supported for all PCAN-Channels. The access's type of the parameters can also be different.

More information about the parameters and values that can be set can be found in Parameter Value Definitions.

Example

The following example shows the use of the method SetValue on the channel PCAN_USBBUS1 to close the message filter. In case of failure, the returned code will be translated to a text (according with the operating system language) in English, German, Italian, French or Spanish, and it will be shown to the user.

Note: It is assumed that the channel was already initialized.

C#:

TPCANStatus result;
StringBuilder strMsg;
UInt32 iBuffer;

strMsg = new StringBuilder(256);

// The message filter is closed
//
iBuffer = PCANBasic.PCAN_FILTER_CLOSE;
result = PCANBasic.SetValue(PCANBasic.PCAN_USBBUS1, TPCANParameter.PCAN_MESSAGE_FILTER, ref iBuffer, sizeof(UInt32));
if (result != TPCANStatus.PCAN_ERROR_OK)
{
    // An error occurred, get a text describing the error and show it
    //
    PCANBasic.GetErrorText(result, 0, strMsg);
    MessageBox.Show(strMsg.ToString());
}
else
    MessageBox.Show("The filter was successfully closed");

C++/CLR:

TPCANStatus result;
StringBuilder^ strMsg;
UInt32 iBuffer;

strMsg = gcnew StringBuilder(256);

// The message filter is closed
//
iBuffer = PCANBasic::PCAN_FILTER_CLOSE;
result = PCANBasic::SetValue(PCANBasic::PCAN_USBBUS1,TPCANParameter::PCAN_MESSAGE_FILTER, iBuffer, sizeof(iBuffer));
if (result != TPCANStatus::PCAN_ERROR_OK)
{
    // An error occurred, get a text describing the error and show it
    //
    PCANBasic::GetErrorText(result, 0, strMsg);
    MessageBox::Show(strMsg->ToString());
}
else
    MessageBox::Show("The filter was successfully closed");

Visual Basic:

Dim result As TPCANStatus
Dim strMsg As StringBuilder
Dim iBuffer As UInt32

strMsg = New StringBuilder(256)

' The message filter is closed
'
iBuffer = PCANBasic.PCAN_FILTER_CLOSE
result = PCANBasic.SetValue(PCANBasic.PCAN_USBBUS1, TPCANParameter.PCAN_MESSAGE_FILTER, iBuffer, CType(System.Runtime.InteropServices.Marshal.SizeOf(i64Buffer), UInteger))
If result <> TPCANStatus.PCAN_ERROR_OK Then
    ' An error occurred, get a text describing the error and show it
    '
    PCANBasic.GetErrorText(result, 0, strMsg)
    MessageBox.Show(strMsg.ToString)
Else
    MessageBox.Show("The filter was successfully closed")
End If

Pascal OO:

var
    result : TPCANStatus;
    strMsg: array [0..256] of Char;
    iBuffer: LongWord;
begin
    // The message filter is closed
    //
    iBuffer := TPCANBasic.PCAN_FILTER_CLOSE;
    result := TPCANBasic.SetValue(TPCANBasic.PCAN_USBBUS1,PCAN_MESSAGE_FILTER, PLongWord(@iBuffer), sizeof(iBuffer));
    If (result <> PCAN_ERROR_OK) Then
    begin
        // An error occurred, get a text describing the error and show it
        //
        TPCANBasic.GetErrorText(result, 0, strMsg);
        MessageBox(0, strMsg, 'Error',MB_OK);
    end
    else
        MessageBox(0, 'The filter was successfully closed', 'Success',MB_OK);