jmax007

Thanks. That will work perfectly.

Not sure how I missed this?

I guess I'll mark this as the new thing I learned today:)

I am using the "open VI reference" to call a vi like a pop-up window. like shown:

In the vi that I am calling, "Debug_Output_Display.vi" I am connecting to a com port. I would like to be able to specify which COM port to choose.

This is all part of a much bigger program that has one front panel where the COM port is selected.

How can I pass this information to the "Debug_Output_Display.vi"?

I am not sure how to do this?

Any help would be appreciated.

Thanks

Jamie

I knew there was a much easier way....

I was looking at this as a far more complicated problem than I needed to.

If I keep the default windows drivers, the USB will show up as additional drive.

I can then just use simple file I/O

No need to mess around with VISA and changing the drivers.

Thanks

J

I am having a bit of trouble with VISA and USB and hope that there is someone who can help, or point me in the right direction.

I am trying to test a USB Hub, so what I want to do is connect my PC to the Hub, and then a USB key to the Hub.

I have read through some info on ni.com and was able to create/change the driver for the hub to be recognized in LabVIEW.

I can pull up the VISA Interactive Control and see my device, but that is where it ends.

I have no idea what to do next? How can I communicate with the Hub and/or the USB key that is connected to it?

I am not very familiar with USB protocols and communication, so I am at a loss. I have tried to look at the "USB RAW" examples, but I am not sure what to do with them or how to use them.

All I want to do is write/read to a USB key through the Hub to be sure it works properly.

Thanks

J

Thanks, I found the invoke node.

I knew it would be right in front of my face....

I am currently reading from a file to populate a table in LabVIEW.

I am having success with changing colors/sizes etc using property nodes... but I cannot find a way to write to a single cell in the table. Is there no way to do this?

I am sure I can figure out a long way to do this, but I am new to LabVIEW and I'd hate to spend a long time working on something that has an easy solution.

On that note, is there a easier way to clear the background colors. Currently I am re-writing each cell to reset the background.

Thanks

Jamie

I am new here to LabVIEW and was hoping for some recommendations.

I need to read the data from a file/spreadsheet, into an array of clusters. This sounds like something that must be common, but I can't seem to find a good example

Basically I have an excel sheet that contains setup information that I want to load into an array of clusters.

row1 is a cluster, row two is a cluster etc...

Since I am new to LabVIEW, I can imagine that I could use the "read from spreadsheet.vi" , but it only allow me to read the whole file as one data type. I could do this several times reading from the same file, but using a different data type each time, then using indexing to parse the data and create my cluster of arrays.

This sounds ugly and I am guessing there might be an easier way to actually read a file into an array of clusters. If not, then I will do it the "long route"

I am using LV8.6 and the file format is not important because I will be writing and maintaining the setup information.

This forum has been a great help so far and I thank everyone who uses it.

I am working on the exact same thing as Paul and I am seeing the same problem.

When I use systemExe.vi, my PIC gets programmed correctly, but if I unplug the pickit2, the systemExe.vi still returns '0' in the return code. I am trying to figure out how I can detect this error.

I have tried dannyt's suggestion, but I cannot seem to get it to work. I am new to LabVIEW, so I may be doing something wrong. Where is the "end of line" termination supposed to be?

Thanks

Just to reply to my own question. I figured out how to get it working. I put the whole command into the command line.

I guess for the error to return correctly I have to call the program direct through SystemExe.vi and cannot use a batch file.

Thanks