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Lpc2000

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Re: Debuging on Tini2131?

2005-10-11 by Eric Engler

> The 20 pin JTAG connector is quite a waste of pins. There's only
> a few active signals on the connector. A 20 pin connector would
> dominate our boards, and in some cases, require us to double
> their size. So on all our boards we have shrunk down to a 10 pin
> JTAG connector.

That's a good move. I have no problem with the board's small
connector. I just wanted to be able to plug in a USB device, so an
adapter seemed like a good idea.

> Since the parallel port on the PC is becoming legacy... We've
> been working with MPE, to make a USB based "widget" for
> development. http://www.mpeforth.com/jtagwidget.htm You'll
> notice it is much faster than the wiggler.

That's what I was looking for. I was thinking of a j-link but I don't
like the idea of paying a ton of money for their DLL SDK. I'm mostly a
PC programmer and I will want to interact with the USB on the PC side.
Is there an open API for this MPE USB device? I understand that you
can likely use it as a high-speed COM port but I want a way to get to
RDI debugging commands.

Eric

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