Configure Mapping with txt file in LabVIEW

[Nicopsa]

Hi Everybody,

I would like to connect my I/O with labVIEW and my .txt file (like in VeriStand) but I don't find any block or VI to do that.

Is there a trick or something like that ? My txt file is about 300 lines ...

Thanks !

Nico

[NathanJD]

If you are trying to add channel mappings to your system definition programmaitcally from a text file, you can do so using the VeriStand System Definition API.  You'll need to write some code to parse your text file and to use the API to add the channel mappings to your system definiton.

[Nicopsa]

Hi Nathan

Thanks for your answer. I never did some code with Labview. Is there an exemple or an existing code about the system mapping that I could use or work on ?

Thanks !

[Guilherme_Correa]

You must have all the channels created in the SDF in order to have the mapping, otherwise it won't work.

[Nicopsa]

Hi again Guilherme !

Yes I work a bit on this subject since my last message. I am creating a VI for mapping my channel directly from the txt file (it is the main point for a project here ...)

The extract from the txt work well but I can't do the map ...

If you have some time, you can look my code on the zip file

PS : You are my hero today 🙂

[Guilherme_Correa]

Connect the error out from the AddChannelList node to the error in of the Save node.

This will ensure that it will save your file after the channels were added.

[Nicopsa]

Yes you are right, but even if I connect the error in and out together, LabVIEW doesn't give me an error even if the map don't work ...

As you can see, I put an indicator LED for been sure that the map process has been done, and the LED never turn to green ... and I have no idea why because my channel source/destination are good

[Guilherme_Correa]

Can you share the SDF and TXT files?

[Nicopsa]

Sure ! And thanks for your help !

[Guilherme_Correa · Accepted solution]

This VI is correct.

Your problem is related to the names of the boards and models.

Once you correct this (in the SDF or TXT), it works fine.

Check the file attached. The LED only goes green when every channel is added to the SDF, if you have a single channel with the wrong name, it fails to map all other channels.