NI-XNET nxBlink() what session type to use ?

[Radek.Pozdnicek]

What session to pass to nxBlink() NI-XNET function ?

I tried to pass sessions obtained from:

- nxCreteSession(..., nxMode_FrameInStream, ...)

- nxCreteSession(..., nxMode_FrameOutStream, ...)

But I get error. The nxBlink() help only says use "The XNET Interface I/O name".

but that doesn' tell me what kind of session out of these to use:

nxMode_SignalInSinglePoint	0
nxMode_SignalInWaveform	1
nxMode_SignalInXY	2
nxMode_SignalOutSinglePoint	3
nxMode_SignalOutWaveform	4
nxMode_SignalOutXY	5
nxMode_FrameInStream	6
nxMode_FrameInQueued	7
nxMode_FrameInSinglePoint	8
nxMode_FrameOutStream	9
nxMode_FrameOutQueued	10
nxMode_FrameOutSinglePoint	11
nxMode_SignalConversionSinglePoint	12

[Eric.M]

Hi,

It's not expecting a session name but the physical port name, like CAN1 or LIN2. Just wire a constant to the terminal and choose the right port if you have a XNET device connected to your computer (it will be in the list). If you're using a remote system, you must know the name of the port (MAX helps for this).

Regards,

[Radek.Pozdnicek]

I already found out that system type of session leads to interface/port type of session that can be used

to blink the particular port LED.

Thank you, Radek

 // Open system session.
        nxCheckErr(nxSystemOpen(&l_SystemRef));

 // Each Interface is represented by a u32 (4 bytes).
         l_NumberOfInterfaces = l_PropertySize /4;
         l_pInterfaceNames = (char**)malloc(sizeof(char*)*l_PropertySize);
         l_InterfaceBuffer = (u32 **)malloc(l_PropertySize);
        
         // This property returns the u32 value for each interface.  
         // You can use this value to get individual interface properties
         nxCheckErr(nxGetProperty (l_SystemRef, nxPropSys_IntfRefs, l_PropertySize, l_InterfaceBuffer));       

         // Get the individual interface names.
         for (i = 0; i < l_NumberOfInterfaces; i++)
         {
            nxCheckErr(nxGetPropertySize((nxSessionRef_t)(l_InterfaceBuffer[i]), nxPropIntf_Name, &l_PropertySize));
               
            l_pInterfaceNames[i] = (char*) malloc(l_PropertySize);
            
            nxCheckErr(nxGetProperty((nxSessionRef_t)l_InterfaceBuffer[i], nxPropIntf_Name, l_PropertySize, l_pInterfaceNames[i]));
            
            // Identify the port that match the resourceDescriptor.             
            if (0 == strcmp(resourceDescriptor, l_pInterfaceNames[i]))
            {
                actualInterface = (nxSessionRef_t)l_InterfaceBuffer[i];
                
                nxBlink(actualInterface, 1); // Blink particular port for identification and
                Delay(1);                    // indicate that input stream was succesfully opened.           
                nxBlink(actualInterface, 0);    
            }
         }