Recording Rising Pulse Edges

[nobody]

Hi,

Currently using the Digital Discovery and Waveforms 3.9.1.  I would like to record rising pulse edges of 6 IO lines over a period of about 30 minutes at 200Mhz.  When I purchased the unit I assumed that I could just record the lines @200Mhz and stream them to a file and post process.  I just need the rising edge times, but I would settle for 30 minutes of data I can post process.  So my questions are

1. - Can I just record rising edge times of lines? (maybe fake it to be a clock event of an SPI bus?)

2 - Can I stream and record @200Mhz to a pc? (faster?)

3 - Whats the best way to do it?

[attila]

Hi @nobody

Unfortunately you can't do this with DD.
The record of such raw data would be 340GiB at 200MiBps...

[nobody]

So even if I do it at a slower rate, how can I just record rising edges?

[nobody]

So I was able to record at a slower rate and I have saved the data.   I am having a problem exporting it now though.  I am trying to export the events of a channel, but they are truncated to 3 decimal places, even though I am sampling at 200Khz.  Is there a way to get the time in terms of 1/200K increments?   I tried writing a script, but that also truncated the measurement to 3 decimal places

[attila]

Hi @nobody

WaveForms beta v3.10.4 adds more decimals:
https://forum.digilentinc.com/topic/8908-waveforms-beta-download/