Why not using a PIC32 @ 80MIPS+ DMA + 128k RAM + USB ?

Its DMA controller seems to have some sort of pattern recognition that
perhaps can be used as a trigger.

Perhaps 40MS/s or more possible.


Isaac


Em 3/12/2010 16:27, trossin escreveu:
> I finished up my first version of the 18F2620 cheap logic analyzer (about
> $10) which is capable of taking 3936 samples at a 5M sample/second rate
> (200ns/sample).  You can find the new project here:
>
> http://www.tedrossin.0sites.net/Electronics/Pic/Pic.html
>
> I added a voltmeter mode where the 5 analog inputs of the PIC are sampled
> and displayed on the screen.  I also implemented run length encoding for
> transferring the samples in order to get the update rate a bit faster ove=
r
> the ~10Kbyte/sec serial port.  The PC side software can cleanly update th=
e
> PIC firmware so as new versions are available, the changes will not requi=
re
> pulling the part off the board.
>
> I also created a bootloader for some of the 18F devices that can found on
> that page as well.
>
> Let me know if you find problems.
>

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