How can i send more than one signal to DMA FIFO?

[pablosan]

i've never done! now i see that in the wave chart and i want to see a perfect sine wave like that.

   

[crossrulz]

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@pablosan wrote:

i've never done! now i see that in the wave chart and i want to see a perfect sine wave like that. 

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So it looks like you are writing to the waveform chart incorrectly.  Please show your code.

[pablosan]

Here it is!

[crossrulz · Accepted solution]

You are not writing arrays to your chart.  Plus it looks like you have two of your plots disabled.  See if this works for you.

[pablosan]

i try that and I have the same problem!

[crossrulz]

1.  Why the FOR loop for the DMA write?  it isn't doing anything.

2. I am noticing a coercion dot on your DMA write.  What is the data type you have for the DMA FIFO?

3. Try zooming in on your chart.

[pablosan]

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crossrulz escribió:

1.  Why the FOR loop for the DMA write?  it isn't doing anything.

2. I am noticing a coercion dot on your DMA write.  What is the data type you have for the DMA FIFO?

3. Try zooming in on your chart.

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1. I've just delated the for loop for the DMA write

2. the data type is I64

3.The wave is not a sine wave

[crossrulz]

Those signals look like you are saturating your D/As (clipping at the peaks).  You should look to see what exactly you are inputting.

[pablosan]

the inputs before the write DMA FIFO is well. If the amplitude is 1 i can see 3 sines waves between  [-1, 1].

I think the mistake is after the read DMA FIFO.

[Intaris]

What's the output datatype of your Integer to FXP conversion?