Details Tutorial from beginning to get the finish deployment of LCD Example

[muahang1234]

I wonder if someone can do a big favorite to the newbies who really want to learn LabVIEW FPGA by providing an indepth details (either as document format or viideo tutorial) to LCD Example. The problem with the example provided by NI (Exercise 1 - Open and Run :CD Application) is it just shows how to test the application but it does not provide a good introduction.

I and probably many people will really appreciate this.

[Jeff.St]

Hi Muahang1234,

Thanks for posting here!  I personally will not be able to create such a tutorial, but do you have any specific questions?  The VI's that are provided in the LCD driver are pretty well documented.

If you are just starting out, I would really recommend that you familiarize yourself with the LCD screen by using the FPGA "Command Handling Loop.vi" and then using the RT API that is provided.  That way you can change your RT code and will not have to recompile for any small changes.

Best,

Jeff S

[muahang1234]

Thank you for the rely.  I understand how the code for LCD works (thank to the G way of LabVIEW).  However, there is a gap in my knowledge - what is the process of creating an complete project/how I put them together.

This is just an example:

Step 1: design the FPGA code to handle certain tasks

Step 2: compile the FPGA code to bit file

Step 3: design the Real-time code

Step 4: link the real-time code to FPGA code.

I can learn by looking at people do it, at least one, step-by-step. 

If you could, please re-write the program and record the screen without providing the commentary.

[Jeff.St]

Hi Muahang1234,

I'm sorry for the delay in my response.

1) For the LCD Code, you just have to drop the code that is provided for you into an FPGA VI.  It's called the "Command Handling Loop.vi" in the functions palette.

2) The FPGA code can be compiled a number of different ways.  The easiest way to compile it is to just hit the Run button on the FPGA VI.  You can also create an FPGA build specification and compile it that way.

3) For the Real-time code, I just recommend looking at the code provided in the example.  This should give you a pretty good starting point.  The other VI's are pretty well documented, so they will tell you what they do.

4)  This is done with the Open FPGA VI reference.  This is the same for all FPGA code.

If you have any specific questions, please let me know!

Best,

Jeff S

[muahang1234]

Thank you very much.  Just a best pratice question - the best way to avoid the painful compiling time is to :

1. create the FPGA code with some kind of share input/output

2. complite the code

3. writing real-time code and make reference to FPGA code

Am I correct?

[Jeff.St]

Muahang1234,

1) If you are still testing, you can use controls instead of constants in your code so that you can change the values in your RT code (make changes without recompiling)

2) You always have to compile the code to use it with the hardware

3) You can run the FPGA code in an interactive mode for some initial testing, but it is better if you go ahead and write RT code and make references to the FPGA code

Best,

Jeff S