Suppose I said to you "I generated some data with my LabVIEW Program, and want to send it to a C++ routine written with Visual Studio. Please help me -- I know nothing about C++, including the difference between an Integer, a Float, and a [whatever the C++ name is for a Boolean]." What would you advise? Probably "Spend some time, at least a few days, learning as much about C++ as you can, and write some simple C++ routines, worrying nothing about your "real" task, but learning how the language works".
Some comments on your code:
- What is the Arduino sending to you over the VISA line? I'm assuming (since you are talking about 2 channels and wanting RPM data) that you are getting two Floats, or two Integers. So why are you doing a Digital Read (which your manual should have told you is for "digital" (i.e. TTL, or Boolean) signals? Did you notice that the output is a Boolean (and why did you distort the Indicator on your Front Panel)?
- In any Programming language, if you wanted to take in some data and write it to a Text file, what two "operations" would you have to consider, learn something about, and develop some code to accomplish? Hint -- one is "take in some data", which you did (but didn't seem to consider what the data were, see previous comment). What's left to do (and totally missing from your code)?
- Spend more time learning the basics of LabVIEW before trying to do more with this example. There are Learning Paths listed on the first page of this Forum.
Bob Schor
