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Omar Mussa

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About Omar Mussa

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    LabVIEW 8.6
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    1998

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  1. I agree about keeping the sim related config separate - I have taken this approach and found it useful but it can also be tricky to ensure that configuration data that is added during development to the simulation files is merged into the deployment folder. I've personally found BeyondCompare to help solve this problem but it is a manual step that has been hard to enforce with process. The article you suggests looks really promising - I think it was exactly what I was looking for but failed to find by my own searching. I think this is going to help me avoid going down a fairly messy rabbit hole! We're definitely not running source directly in our final deployment. We run from built exe's and leave no source code on the deployment machines. But the other points are definitely valid. I agree this is a suboptimal way to manage the configuration data. Ultimately what I think I want is for the auto-merging of the text to fail so that the developers can make intelligent decisions about what to merge - basically the way that binary files are treated (probably the only time I will ever think this way) - I think the article @smithd linked to will do that for me. Very appreciative of the help and advice!
  2. We have a large LabVIEW project that is structured in multiple Git repos using Git submodules. Within each Project we have our source organized into folders like this: Project Folder Configuration Data Folder Source Code Folder We typically do development on our development machines where the Configuration Data Folder contains configuration files that are in simulation mode and using atypical configurations. We also deploy our development system onto tools during development and testing by cloning the repo onto the hardware supported platforms. On these machines, the configuration data is modified to remove the simulation flag and is further configured for the specific project being developed. When we do a pull onto the deployed systems, we definitely want all the Source Code Folder changes but we generally do not want the Configuration Data. However, we want the Configuration Data to be tracked, so we do want it to be in the/a repo. Does anyone know what the best method to do this is? What we don't want to happen is for the deployed system configuration data (which might include some machine specific constants, etc) to get over-written by some developer setting that was used for testing, but we still want to pull/merge changes onto the tool. Note that we have the tool on a separate branch from the development branch but when whenever we merge we can potentially get into trouble if we pull configuration data as part of the sync. Since the configuration data is text based, Git typically auto-merges these changes and so it can be difficult to tell that the merge affected the configuration data. I am curious if anyone has had this issue already and come up with a good solution/strategy.
  3. I personally think of TestSuites as a way to group a bunch of tests into a common test environment rather than as a way to reuse a TestCase for testing multiple parameters. But I can definitely see the value of being able to set the displayed name of the test case on the VI Tester GUI and how it would help handle the situation you raise of re-running the same TestCase with multiple parameters. The simplest way that I see to solve this problem is to just have 3 TestCases that share some common test code so that you can have easy to debug and use the three test cases to define the tests for each logger. In this scenario, I think you'd have a test folder hierarchy like this: Tests Tests\Logger\DiskLogger1 Tests\Logger\DiskLogger2 Tests\Logger\InMemory Tests\Logger\Common The simplicity of this is that you can specify the specific tests for each logger, you don't have to worry about it being too complicated and you can add all three TestCases to a TestSuite if desired so that they can share some resources or be grouped for logical organizational reasons (or you can skip the TestSuite if you like). Most likely, this is the way that I would approach that problem. The other way that is possible to approach the problem is to use test case inheritance. VI Tester does support TestCase child classes but you will have to make some tweaks to your code to make this work. On disk you'll have something like this: Tests\Logger\DiskLogger Tests\Logger\DiskLogger.1 Tests\Logger\DiskLogger.2 Tests\Logger\DiskLogger.InMemory where DiskLogger.1, DiskLogger.2 and DiskLogger.InMemory are classes that inherit from DiskLogger (which is the TestCase with all of your test methods). You can create the child classes just by creating classes from your project - you don't need to create them using VI Tester. You'll need to modify the test methods to use dynamic dispatch inputs and outputs (which will also require that the re-entrancy type changes to 'shared' - LabVIEW will warn you about this and its pretty easy to update). You'll also need to create over-ride VIs for any tests in your child classes that you want to execute (currently by default, VI Tester is conservative and assumes that if you don't specify a test VI to over-ride then you don't want to execute it from your child class). When you create a "New VI for Override" and specify your test method, by default the implementation is to call parent method so this can be done pretty quickly or via scripting. After all that work, you can use your original TestSuite (the first image) and wire in a bunch of your child TestCases and each child will show its class name on the VI Tester Tree.
  4. I think another way to do Linux on Windows now is via Docker Linux containers... Also, Windows 10 now supports running Linux as a subsystem: https://msdn.microsoft.com/en-us/commandline/wsl/install_guide
  5. I would do the following: Setup my Parallels VM to use Wi-FI from MAC in bridged mode Make sure my Windows VM network adapter config is correct to reach the myRIO Ping the myRIO - if no response then you have a network config issue If still not working I would shut down the VM, restart the Mac and then start the VM. Ping the myRIO - you should definitely get a response Connect (One other thought, you MAY also have a Windows Firewall issue, can retry with Firewall off if all of these steps fail but I don't think you should need to do that)
  6. That's interesting and I definitely have never thought of that. Do you know what the differences are between the Matrix data type and Array data type? I tried a couple of OpenG 2D array operations out and they all seem to work ok on the matrix.
  7. Also - since you're using python for the data processing you can use python's web server and avoid the legacy nightmare that is ActiveX.
  8. I'm using plotly right now in an offline project (via the JS API) for displaying data parsed from csv data files on a Windows (10) machine. I embed a .NET browser on a VI and load a very basic html file that runs some javascript. From there, the way I see it there are two pathways: 1 - Run a local http server where the data folder is so that you can get the files through AJAX calls to get the file data. 2 - And I know this sucks but - utilize ActiveX so that you can use the file scripting object to read data files. I have my code setup to poll a specific file for date changed and if changed then to parse it and load it onto the plotly graph. The benefit of option 2 is that you don't need to manage a web server. In order to make it work I have set the local machine as a trusted site and set the trusted site security to allow ActiveX. I went that route because I didn't want to manage an http server on my machine but YMMV. The end result is that I'm using the 3D plot to generate really great looking graphs as data is acquired and the graphing code can be reused in future data vis. applications. No web connection needed.
  9. I think that in this case, the OS flag is OK even if its project only since you (typically?) need to be in a project to work on a target's code anyway (as far as I understand how working with targets works). I'm not sure - actually think I may have messed that up and it may have just worked for the case where the dependency already existed where expected. I think VIPM builld process may grab it if its in the source folder of the package, not sure - would be definitely worth testing by deploying package to a new machine.
  10. That's great! One other thing you might try - I think the build process should also work if the Conditional structure default case was "empty path" and that the "Linux" path was as you coded it - in that case it avoids the unnecessary hardcoded path to the .SO file in the unsupported cases (non-Linux). I think the code will still open as 'non-broken' if open on a Linux target context (as it should be) and it will open broken on a Windows context (as it should be). Its probably best that the code is broken when opened in an unsupported context - because its better to break at development time than at run-time in this scenario.
  11. I would check the "specify path on diagram" and try passing the path into the CLFN node and use a conditional disable structure to pass in the extension (or hard code it to only support Linux targets). Best practice would be to create a subVI with the constant so that you use the same path for all instances.
  12. FYI - I created a blog post on test driven development in LabVIEW using Caraya here: http://www.labviewcraftsmen.com/blog/tdd-in-labview-a-caraya-approach
  13. I've been using a mix of EtherCAT slaves (all third party, none are NI) for several years now connected to various NI cRIO controllers (9067, 9068, 9035) and I haven't had any major issues. So far, whenever I've had an issue its been because the vendor had an error in their XML file and contacting the vendor I've been able to get fixes in each case without too much hassle. I would warn that if you are using a 9068 you should be aware of this issue: http://digital.ni.com/public.nsf/allkb/9038F4D0429DD7C686257BBB0062D3F3 In my case this issue was a showstopper so we switched to a 9035 which I would recommend looking at.
  14. This is really good info, thanks for sharing your experience. For #2, are you dynamically loading your FPGA Bitfile from disk (I'm guessing you are not)? I have a feeling that if you did this, the RAD image would work (your bitfile would just be another file transferred via the image and the RT app would load the FPGA on startup from a known location on disk - I haven't tried this but I'm guessing this is how it would work). Dynamically loading the FPGA might not be the best option for all deployment scenarios of FPGAs but it would probably insulate you from this issue.
  15. If you use a custom FPGA, you need to recompile it for any change (unfortunately, even cosmetic UI changes - unless you are running the FPGA emulated target which you can do to validate simple logic, etc before you compile for hardware). The RT code can run from source though without recompile (it gets deployed to RT target and then it runs and is debuggable more or less like desktop LabVIEW). I've personally had minor inconveniences where I had to reboot the target because the deployment for debugging failed but usually a target reboot is all that it takes to fix deployment issues during development. Once you are happy with your RT code, you can compile an rtexe that you can deploy.
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