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Now, I got the ADC output. I can see the output in Signal Tap analyser for individually 14 bits and also as a whole for all 14 bits in the hex form. For clarification, I attached the file here. even output also see on the led using counter.
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Great! It looks like all bits are toggling.
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using "create signal Tap II list file", I have also created one text file. but unfortunately this file is only for 128 samples (from -16 to +111) and unable to ctreate such file for more samples.
Is it possible to create such file for lets say thousands of samples??
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If you click on the Setup tab in SignalTap II, on the right is the sample depth. You can select the number of samples to capture there.
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Is it also possible to capture single waveform(not just as hex format) instead of individual 14 bits, same like analog signal so that further processing will be easy??.
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I believe the data captured by SignalTap II can be read using external tools. However, I've never had to use that feature.
When I want to capture a block of samples from an ADC, I'll typically write my own code to capture to a RAM block or multiple RAM blocks. The RAMs are configured as dual-ported, with one side connected to the ADC, and the other connected to an Avalon-MM system. I then read the captured samples from RAM using the JTAG interface, via the method described in this tutorial
http://www.alterawiki.com/wiki/using_the_usb-blaster_as_an_sopc/qsys_avalon-mm_master_tutorial Cheers,
Dave
Honored Contributor
