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Mads last won the day on August 21

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About Mads

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  • Birthday 12/01/1975

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    Bergen, Norway
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    Trail running, skiing, science fiction, food and travel.

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    LabVIEW 2018
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  1. Not really, but that would be one way to attack it yes, if it was not for the classes.
  2. Hahaha, both of them apply very nicely ๐Ÿ˜† I had only thought of the first one.
  3. Sure. The idea exhange and the whole NXG vs current LabVIEW scenario always makes me think of one particular song by the Fugees...๐Ÿ˜‰
  4. Ah, it's just the classes that mess things up then. One more vote for the idea of a single file distribution for classes then on the idea exchange... (or even better as fabions mentions in the comments; an upgraded and backwards compatible llb format with support for subdirectories? ๐Ÿ‘).
  5. Any tricks to this? (I'm using LV2018) If I try to target an lvlib to an llb (because I want the llb to be a single file, to be used as a plugin), I keep getting several folders outside the llb, and none in the llb. This is with the whole lvlib included and the destination set to an output directory set to be an llb. Right now the lvlib I want included in an llb is the JKI Serialization.lvlib, which has classes included as well so it is not the simplest lvlib. I have tried all kinds of variations on where to target dependencies too..Including the lvlibs in the executable seems to be the only way to get everything nicely packaged into one file, but in this case I do not want to update the executable, I want it portable with a/several plugin(s). Not excluding unused items and allowing the build to modify libraries seem to help avoid subVIs ending up in directories outside of the target directory in some instances, but it does not help getting lvlibs into an llb. The second tidiest working solution seems to be to target the lvlibs to a directory. That fills the directory with hundreds of files (a mess I do not like), and you might get into naming collisions if you point several lvlibs to that directory because the name spacing is not kept (could have automatically separated the subVIs to namespaced folders e.g.). Using packed project libraries is perhaps one solution, but that is cumbersome, especially when dealing with lots of different targets.
  6. The application in question - would it otherwise behave smoothly with the 900 MB file, if it was able to load it, or would it become so sluggish that it would not make any sense to load that much data anyhow (i.e. the technical issue might just be of technical interest...)? Why do you not just put a limit on the file size you will load? You can always get a handle on how much a file of x megabytes typically takes when loaded, and calculate your suggested limit based on that -. either alone or combined with a reading of the available memory. If the file is above the limit and the processing permits it, you could offer the user to decimate the data or extract a subsection of it. You can also allow the user to proceed with the full file, but at least you have given him a warning.. If a crash will erase previous work the user might opt out...and if not, it will not look as bad when it does crash.
  7. Passing data between executables on the same machine that happens to have the TCP stack loaded because it has a network interface anyway does normally not require a loopback adapter (unless any of the requirements I listed are in effect). If this was a serial link, then sure - you would need a physical or virtual null modem installed. The local TCP traffic never passes through any adapter anyway. As described in the first sentence here (where the need for loopback is in place because they want to capture the truly local traffic): https://wiki.wireshark.org/CaptureSetup/Loopback You can fire up the client-server examples in LabVIEW and run those with localhost, as long as the machine happens to have a single NIC installed. Any client-server will be able to do that. That's why I was wondering what's different here.
  8. Tested the 4.2 beta with success on a Linux RT x64 target today (cRIO-9030), where I have never gotten it to work previously. Compressed and decompressed folders with multiple files and subfolders, and used the inflate/deflate functions. The files that were compressed were also transferred to a PC to verify them there, and vice-versa.
  9. What is the role of the loopback adapter in this case? Do you need it to monitor the traffic through Wireshark for example? Or is the machine without a single physical network adapter so you have the loopback installed just to get access to networking? Or is it to handle a routing issue? Otherwise the link could be fully local, with all the shortcuts that allows the network driver to take.
  10. Downloaded it and so far I've tested it on LabVIEW 2019 and Linux RT ARM (cRIO-9063) with success (compression/decompression of files and folders and deflate/enflate on strings). I'll try a different target type later today. Only trouble so far is with the package format - my VIPM does not like opening ogp files from Windows (get an access error), but I can open it and install it manually from VIPM...That might be a local issue though.
  11. There is also a version 4.2 in the works with more 64-bit support - as discussed here: On a side note; I used version 4.1 now from LabVIEW 2019 on a Linux RT for ARM target and got build errors that I do not get in 2018. I have not investigated it much yet though so it might just be a local phenomenon: From the build log: Deploying ZLIB Open Read File__ogtk.viZLIB Open Read File__ogtk.vi loaded with errors on the target and was closed. LabVIEW: (Hex 0x627) The function name for the lvzlib.*:lvzip_unzOpenCurrentFile3:C node cannot be found in the library. To correct this error, right-click the Call Library Function Node and select Configure from the shortcut menu. Then choose the correct function name. LabVIEW: (Hex 0x627) The function name for the lvzlib.*:lvzip_unzOpenCurrentFile2:C node cannot be found in the library. To correct this error, right-click the Call Library Function Node and select Configure from the shortcut menu. Then choose the correct function name.
  12. Great. I would be glad to test it. I mainly work on ARM-based Linux RT targets myself, and the occational old VxWorks cFP-target.
  13. I noticed on sourceforge that there is a version 4.2 of OpenG Zip. Will it be released as a package anytime soon?
  14. Daisy-chained / multi-dropped RS485 with a master-slave protocol? If you need an example of how that can be done in LabVIEW you can look at this one which is based on one of the industry-standard protocols for such communication - Modbus :
  15. The checksum (well, CRC to be correct) will be generated by the same software that generates the archive in this case - and is then run through tests locally to ensure it is OK. So I feel confident in trusting the content from that point onwards if the CRC is OK, and the structure of the content is recognisable. It is the transfer in this case that is highly exposed to corruption... (involves several weak protocols and complex layers which I cannot change, - or at least not all of them at this stage)๐Ÿ˜ฒ
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