Dangerous Prototypes

Other projects => Open Bench Logic Sniffer => Topic started by: goldserve on April 24, 2010, 08:31:22 am

Title: Working well but would like to see some updates!
Post by: goldserve on April 24, 2010, 08:31:22 am
OLS is working great but RLE doesn't work for complex signals like SPI communications. Also, I would like to see 1%/99% ratios because with 0% and 100%, you miss the edge that was triggered on like CS of SPI bus.


(http://http://img153.imageshack.us/img153/1672/spireadid.png)
Title: Re: Working well but would like to see some updates!
Post by: pelrun on April 24, 2010, 09:12:46 am
25/75 isn't sufficient?

Give the guys a chance - the hardware's only just come out, the updates will come.
Title: Re: Working well but would like to see some updates!
Post by: alm on April 24, 2010, 11:56:08 am
[quote author="goldserve"]
OLS is working great but RLE doesn't work for complex signals like SPI communications.[/quote]
Yep, something like a clock signal will quickly fill your buffer, even with RLE. But RLE is by far the simplest compression algorithm, and it's streaming. Even the commercial Intronix Logicport (http://http://www.pctestinstruments.com/) only has 2kpoints with RLE, I think. The fix for this would be external RAM, and I don't think that hardware revision is due anytime soon.

You could try adjusting your trigger so you only capture the packet of interest.
Title: Re: Working well but would like to see some updates!
Post by: goldserve on April 24, 2010, 06:42:53 pm
Sorry, I wasn't demanding updates but I was simply pointing out some bugs or features I would like to see. I was also wondering if there were any one actively working on the FPGA and Java Client side of things.
Title: Re: Working well but would like to see some updates!
Post by: robots on April 24, 2010, 07:22:26 pm
I think there is no current development going on, just some minor fixes.
I guess everyone is waiting till the HW gets to people, and they come with some feedback :)

Me personally can see much more room for updates. There is a "Issue tracker " at the gadgetfactory's Ols page. I have added few bugs there.
Title: Re: Working well but would like to see some updates!
Post by: jack.gassett on April 25, 2010, 07:02:16 am
Yes, we were waiting for the hardware to get into peoples hands before starting work on updates.

Now that it looks like boards are arriving I plan on starting a thread Monday morning to start working on updates. First thing on the list is getting rid of multiple bitstreams and putting everything into one bitstream controlled by the Java client.

@robots
Thanks for posting the issues you have found, I looked them over and have some ideas to address some of them as we work on the updates.

Jack.

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