Mellroth
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Posts posted by Mellroth
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QUOTE (Darren @ Jun 11 2009, 05:01 PM)
Thanks, Phillip. I have filed CAR# 173651 to myself for investigating your suggestions in LabVIEW 2010. If anybody else has any suggestions, post them here, as I will be reviewing this thread when looking into the CAR later this year. Again, I'm looking to stick with a 100% G, platform-independent implementation.-D
I tried converting your code to read U32 values instead of a string, and I also removed the "Get File Position" and "Set File Position" functions.
By this I was able to reduce the time, by approximately 30%, for large files.
/J
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QUOTE (finimits @ Jun 9 2009, 04:46 PM)
...I would like to know if anyone has converted a simulink model into a dll using the SIT(simulation interface toolkit) and then called the .dll from a LabView vi WITHOUT running the dll on a real-time target i.e. just your PC. ?...
Sure, just use the methods from the "Model interface" palette to interface the model dll.
/J
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QUOTE (pete_dunham @ May 5 2009, 02:36 AM)
http://lavag.org/old_files/monthly_05_2009/post-5958-1241530862.png' target="_blank">
/J
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QUOTE (manojba @ Apr 29 2009, 09:00 AM)
Hi, how to create hypertext link in labview i have splash screen for about button, in the splash screen I have my companys website link as of now its a underlined text how to make it a hyperlink so when somebody clicks on it it should open the website thanks in advance...How about this;
1. detect mouse click on the link text (easy to do with the event structure)
2. launch default browser as Antoine suggested, or you could embed the webpage in your application using an ActiveX container.
/J
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QUOTE (Tim_S @ Apr 21 2009, 09:03 PM)
I haven't tried compiling yet. I called NI tech support to try and "get my ducks in a row" before trying this. Support put me on hold to discuss my questions and was informed I couldn't compile without the physical unit. Have I been mislead?Tim
I very much believe so, but again, I might be missing something in your setup.
If you have the LabVIEW project correctly setup, you can compile the FPGA code using your local machine as compile server.
I'm at home at the moment, and I just tried a compilation on a virtual FPGA setup, running in a VirtualMachine (within VirtualBox on an iMac). This worked as expected.
/J
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QUOTE (Tim_S @ Apr 21 2009, 08:30 PM)
... I'd like to be able to compile the update to the cRIO without having an identical system on my desk...Tim,
Maybe I'm missing something, but we have compiled many updates for our remote systems (even more remote than Detroit - Brazil), without the actual units.
Compilation has been done both for the RT parts as well as the FPGA.
Have you tried to build the rtexe and compile the bit files on your local machine?
Do you get any errors during the builds?
/J
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QUOTE (Black Pearl @ Apr 14 2009, 09:16 AM)
But could not any one with a SVN client (given that the server is open to them) check out all files, or is the repository password protected?It is possible to configure the SVN server to only accept users in a domain to access the server.
Then you can restrict each repository on the server to only allow access for a subset of these domain users.
It is also possible to set permissions (by adding hooks), for a repository so that only a few users can add data to the /tags hierarchy, while granting "read access only" for all other users.
/J
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QUOTE (labc @ Apr 14 2009, 08:16 AM)
My question is, why I can't open the new created .zip file?The data 1 might be equal to data 2 in terms of values, but the representation is different.
Notice the red dot when you write data to the data 2 terminal, this dot represents a coercion, i.e. a conversion between one representation to another.
I have not opened the code, but my guess is that when you write data to the new zip file, you are actually writing data as I32 values, not U8.
The solution would be to specify the data type when you are converting from string to numeric.
/J
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QUOTE (BrokenArrow @ Apr 6 2009, 09:38 PM)
Check Device Manager. Perhaps the COM port is setup wrong for your configuration.Since more than one application might share a resource like the COM port, I think it is good practice to setup the communications within your application, instead of relying on the "global" settings.
My 2c
/J
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QUOTE (Chris Davis @ Feb 7 2009, 08:45 PM)
Then add those subversion keyword replacements as subversion properties to the VI's you want modified. The next time you commit, (which you will have to do to make the subversion properties change) you'll see the text updated. I've only done the keyword properties on windows clients, but it works every time.:worship:
I was just starting to search for something like this. As always, LAVA is the place the look...
/J
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QUOTE (alfa @ Jan 14 2009, 09:22 AM)
...Of course the half-cannibal physicists don't understand the charkas...Could you explain in more detail about these half-cannibals?
Does it count as cannibalism if you are eating people that are at animal level?
Also, do you think people at animal level eating other people should count as cannibals?
/J
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QUOTE (george seifert @ Oct 28 2008, 02:32 PM)
It is possible directly in LabVIEW.
1. Use an event structure and filter the event "Drag Starting?"
2. in this event, find the drag data named LV_TEXT
3. convert the drag data from variant to string, and then to a path
4. add an additional drag data element with drag data set to the path, and set drag name = LV_PATH
http://lavag.org/old_files/post-5958-1225226246.vi'>Download File:post-5958-1225226246.vi
/J
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QUOTE (rolfk @ Oct 24 2008, 08:37 AM)
Your point was directly proved to be true :laugh:
QUOTE (alfa @ Oct 24 2008, 09:10 AM)
Looks like nobody is against prostitution!!!The 98% are afraid of prostitutes, that's why we have dictators, corruption.../J
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QUOTE (Altobo @ Oct 21 2008, 03:04 PM)
...I need to activate 6 several small engines in a specific order. Each engine may only be active for a specific amout of time, and when one is turned of, another should start immediately.So it should go: 123456123456123456 with a specific amout of time between each step. It should loop until the user wants it to quit.
Right now I was experimenting with the 'Tick Count' function, but with little success...
Furthermore I have no idea what functions to use to use this program to activite the engines...
Welcome to LAVA Altobo.
You'll have to provide a lot more details to get the information you need, like
1. What kind of engines (SW process, physical engine, ...)?
2. What kind of interface do you have for your engine control? (serial, TCP/IP, UDP, ...)
...
You are also going to get a lot more answers, if you show some effort and upload what you have done so far.
/J
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QUOTE (ikd @ Oct 21 2008, 10:59 AM)
...The problem is with first byte sequence write (setting velocity). It fails, but then the second command is executed well (with default speed parameter).When I try to run only the set absolute position command (right after setting properties of port) it also fails...
Sounds like a timing issue.
Try to put a msWait node after you have configured the serial port, i.e. don't send your commands directly after the config.
/J
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QUOTE (d_nikolaos @ Oct 14 2008, 10:13 AM)
...how I can make this function to understand that the first 8 bits is hi and the other 8 bits is lo.Second how I can convert this 16bit to number...
The output is a 16bit number.
To change the order of the Hi and Low bytes, just wire the node in different order.
Use the LabVIEW contextual help to display how a function is used.
/J
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QUOTE (d_nikolaos @ Oct 14 2008, 08:32 AM)
My input will be 12 bits. But with the RS232 protocol I have to split these 12 bits to 8 and 4 bits.So finaly my input will be 8bits the first time and 4 bits the second...
As jdunham said, it would really help if you could post some code.
To combine two 8 bit numbers into one 16bit number, you can use the "Join Numbers" primitive in LabVIEW.
I don't know if you transfer the data in network byte order, or intel byte order, but you can handle either case with the "Join Numbers"
/J
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QUOTE (alfa @ Oct 1 2008, 09:07 AM)
Seems like a very bad statement.
Check the mirror
, then go checkout http://www.darwinawards.com/.QUOTE
Honoring those who improve the species...byaccidentaly removing themselves from it!/J
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QUOTE (crelf @ Sep 26 2008, 07:26 PM)
Sorry, I meant copy-delete, and I was wrong in that the history is preserved, but there are still issues with the rename operation.
http://subversion.tigris.org/issues/show_bug.cgi?id=898
QUOTE (PJM_labview @ Sep 26 2008, 07:33 PM)
If by CLI you meanCommandLineInterface, then do you know that you can automate TSVN by passing command to tortoiseproc.exe?Yes I knew that, but as I understand, not all SVN commands are exported in tortoiseproc.exe (and will most likely never be).
Apart from that, I prefer to have the CLI commands to be the same on all platforms.
Don't get me wrong, I voted for a switch to SVN, but I think all tools (CC as well as SVN and others) have some problems/issues.
Depending on what platform you are used to, you will probably see different problems, just because you have a certain work flow in that old tool.
/J
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QUOTE (lavezza @ Sep 26 2008, 07:48 AM)
...Can you share your findings from your comparison...I can share as much as I remember right now, and I'll see if I can post some more info next week when I'm back in office.
Our group have happily used ClearCase for the last 12 years, but are now moving over to SVN to have the same tools all over the company.
What I did was to see if the methodology we used with ClearCase could be transferred to SVN without too much problems.
To summarize; Yes! but with some changes in how we use labels and also some changes to our CM-plans
Have a nice weekend
/J
The Pro's and Con's I remember right now;
Pro' Clearcase
* We really like the ConfigSpecification files, since they make it easy to backup to a specific revision, and still keep track of all linked module versions
* Very Robust, we have never had any problems whatsoever
* Dynamic views can be great, once you know how to use them, e.g. I can setup a specific view for a build. At the same time I apply my cs-file, all other users will see the same code as I do.
* Labels are easy to apply, and easy to find. The user don't have to specify where to store a specific label, c.f. tagging in SVN
* Very easy to switch between labeled versions, as this is merely a change in the cs-file
* Easy to give directions to a fellow worker, on which versions we have are currently using
* Very easy to check what revision and/or rule (e.g. label) a file/folder is loaded with
* One installation gives you all tools you need, Browser, Context support, Label browser, etc. etc.
* Easy to check which versions another users is actually using, since we can see other users cs-files.
Con's clearcase
* Slooooow, at least compared to SVN. (pretty close to a Near Death Experience, as I think of it
)* It is slow both in the CC-browser and in the Windows environment.
* Costs a lots of money for a license
* If you have several projects loaded in a Snapshot view, they will all use the same version of linked modules.
* if network goes down, and you are working in a snapshot view, you might have trouble just browsing the folders (depends on your settings)
Pro's SVN
* Fast
* Very light weight
* Easy to introduce to customers
* Easy to learn
* Good interface (Tortoise SVN)
* Easy to setup a simple repository
* Different projects in a working copy, can use different versions of the same module (specified in svn:externals)
Con's SVN
* There is not one tool that gives you all the functionality that you get from ClearCase
* Depends a lot on that rules are followed by the users, unless you create server hooks to check user actions (but that is not in the base install), E.g. tagging/Branching is merely copies, so it is up to the user to select where a specific tag is stored. If a user accidentally stores a Tagged version in the wrong place, others might having a hard time finding it.
* Not as easy as CC to find what tag a specific file belongs to, since this has to be determined from the path
* Linked modules are linked with absolute paths :headbang: , which means that it is not just to move a repository from one server to another (as all svn:externals must be fixed)
* You'll have to install a few software packages, at least if you need the CLI support as well as the support from TSVN
* Doesn't handle renames as well as ClearCase, a rename in SVN is a delete-add operation, which means that revision history is lost (I might be wrong on this)
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QUOTE (Shaun Hayward @ Sep 25 2008, 04:22 PM)
...there is no hard and fast advantage of one method over the other, but many good talking points have been raised...One thing that convinced me to have separate repositories was that the revision graphs documentation states, that it will fetch all log messages from the repository root, to generate the graph. It also says that it will decrease in performance with higher count of revisions. Therefore separate repositories are much more likely to stay reasonable in size, and in turn be more responsive in terms of the revision graph output.
You can find a similar problem in ClearCase when you let your VOBs grow, having to many label types within one VOB slows down the ApplyLabel operation badly.
(I recently did a comparison between CC and SVN/TSVN for my company)
/J
Finding gaps in pulse train
in LabVIEW General
Posted
When you find a gap, do you need the start location, stop location or the centre location (or do you need all of them)?
/J