Here's an obscure Friday Morning question: Is it possible in LabVIEW to get the callees of a VI without loading the entire VI into memory? For instance, by reading static information from the binary? Thanks ...
I'm using LabVIEW (8.6) for a project with SVN for my revision control and I've come to a point where I need to branch it. I already know I'll need to make changes in the branch that I will want in the trunk. Is there any suggested method or ways to merge binary files from branches in SVN, specifically with respect to LabVIEW? Or will...
I have a LabVIEW application that current sends data to a C++ application via a DLL. I now need to send data back to the LabVIEW app from the C++ one. Can I trigger code in LabVIEW from a DLL call or will I need to poll the DLL periodically to see if new data is waiting? Or am I going about this in completely the wrong way? ...
This is marked as a subjective question, I hope I won't get too many down votes though. LV seems to offer a nice graphic alternative to traditional text based programming. As I understand, it's not a just-virtualization/data acquisition programming language. Nonetheless, it seems to have that paradigm pegged to its creator's name. My q...
I have a LabVIEW 8.6 program that is using a DLL written in Qt; the DLL listens to a TCP port for incoming messages and updates some internal data. My LabVIEW program calls into the DLL occasionally to read the internal data. The DLL works perfectly (i.e., receives data from the TCP port) with another Qt program. However, it does not ...
I am currently calling a DLL from labview, but I need to be able to debug it realtime (because of it's accessing time sensitive hardware). I would like to just printf() my error assert messages but I am unsure about how to open a DOS window from within the DLL to dump error information to. Has anyone done this before? I know I could do t...
ni-daqmx has a "simulated driver" feature. In the case of an AI, the returned signal is a noisy sine. Is it possible somehow to change this behavior in order to have anytype of signal? if not, is there some alternatives to simulate hardware? ...
i want to consume a .NET web service which returns an object of some class in labview. How do i convert the returning object into a labview object. Currently it just returns a srting. Thanks ...
I am using LabVIEW to talk to Excel via its ActiveX interface. For some reason after some time successfully writing to a spreadsheet I got this error when attempting to call the a function which does something with the range. Sorry this question is so vague, but its because I am actually using another toolkit to take care of the Excel ...
I am attempting to debug a dll that is called by a Labview application. I have the right symbol files (downloaded from microsoft) for things like ntdll.dll and others. I of course also have the pdb file for my DLL. What I don't have, obviously, is any symbol files for labview; since as far as I know National Instruments does not release....
In LabView 2009, is there a way to have one control (slider) affect the output and display of another control (slider)? For example, there are two sliders that adjust two separate parameters. I would like to be able to adjust the parameters independently but also simultaneously adjust both with a separate (parent) slider. The change i...
I am trying to connect a Qt client to a LabVIEW server (acquiring analog signals). Can this be done with data sockets ? ...
I edited my .gitconfig file to add support for LabView and it appears that I did something that Git doesn't exactly like. The problem is it (Git) doesn't tell me what it doesn't like. What did I do wrong? The error message doesn't help much either: "fatal: bad config file line 13 in c:/Users/Tanner/.gitconfig" [gui] recentrepo = C:...
I'm trying to get lvdiff from meta-diff suite to work with Git. My .gitconfig looks like this: [gui] recentrepo = C:/Users/Tanner/Desktop/FIRST 2010 Beta/Java/LoganRover [user] name = Tanner Smith email = [email protected] [merge "labview"] name = LabVIEW 3-Way Merge driver = 'C:/Program Files/National Instrum...
I'm using LabVIEW and the Database Toolkit to execute an SQL query, and it keeps barfing on this for syntax reasons. I'm using MySQL through the ODBC connector. Each line should have a newline character at the end except for the last. The error LabVIEW is throwing is this: Possible reason(s): ADO Error: 0x80040E14 Exception occur...
When designing the front panel of a LabVIEW application, there's no way to render controls invisible except programmatically: connecting a False constant to a "Visible" property node somewhere on the block diagram where it gets run before anything else. Isn't there any way to do it from the front panel designer? ...
On the surface LabView and Microsoft Robotics Studio appear to me to have a very similar programming paradigm and environment. Is it fair to compare these two products, or are they in different leagues? I am hoping someone who has used both products will help compare and contrast them so that I can understand when it is appropriate to ...
One programming construct I use quite a bit in LabVIEW is the Event Structure. This gives me the benefit of not having to needlessly waste CPU cycles via polling but only perform actions when an event I'm interested in is generated. As an experienced LabVIEW programmer with a decent understanding of C, I'm curious how one would go ab...
Hello, I'm trying to write/read to an extern device connected to a FTDIchip FT2232 MPSSE mode using SPI. I'm using the SPI function given by FTDI for Labview. I'm doing this: Open_Device - Init_Device - Write/Read - Close_Device The problem is that I don't have a clock signal on the scope when I try to read/write. Do you have a solut...
I created a control in LabView. My LabView code writes data of that type to a binary file. I want to read this data into a VB Structure. Can I do this programmatically, or do I need to manually create a corresponding structure? ...