Sine wave fpga

[SEGIO]

Hi everybody,

I've tried to generate a signal in FPGA (with determined amplitude, frequency...) and plot it using waveform chart (also in the FPGA part), but when I put run continuously, I get a 0 amplitude signal during all the time. What's going wrong?

Thanks!

[MarcoMauri]

Have you tried placing your code in a for loop instead of running continuously?

Regards,

Marco

[HoussamK]

Hi,

have a look at this :  Convert Sine Wave Generator Raw Output to Fixed Point

[SEGIO]

It works but the signal generated is not constant and it doesn't seems perfect sinusoidal, it seems to be triangular.

Thanks 😉

[christian_w · Accepted solution]

You can't use chart's on the FPGA. If you want to visualize the data it has to be done by the Host.

The FPGA code will be compiled to a bitfile without controls. The controls on the main VI represent the interface to the host and can't be (really) used to visualize the runtime behaviour.

Hope it helps

Christian

[SEGIO]

Is there any example of how to read data in FPGA from RT? I mean, I've an acquisition made and saved as .txt and I want to read it in RT and then transfer it to FPGA to implement an algorithm. I suppose that I should implement a FIFO but I'm not really sure how to do it. Can I send all the data or I've to send it with "small packets of data"?  Any help will be greatful 🙂

Thanks

[HoussamK]

Hi ,

This example shows the simple functionality of a DMA FIFO used to send data to and from an FPGA target.

Simple DMA FIFO Example for FPGA