Lpc2000

I have the same problem in my project : I plan to use P0.22 to P0.31 
as GPIO, but when primary JTAG is pluged in those pins are unusable.
Well, I don't understand why Philips didn't think about this case, 
we don't necessary need ETM port for debugging (just only 10 pins 
lost ... this is the case the Ashling dev'card when you only use 
embedded debugger).

Benjamin PRADAYROL

--- In lpc2000@yahoogroups.com, Peter Kuhar <peter.kuhar@g...> wrote:
> I you plan to use secodary JTAG:
> - Seconday JTAG is enabled in software so you need same other way
(UART) to
> program it for the first time.
> 
> Pero
> 
> Monday, February 9, 2004, 7:42:15 PM, si napisal:
> > Peter Kuhar wrote:
> >> If you're going to use UART ISP, just connect max3232 touart 
ena and
> >> use lpc21xx isp utility. ISP is enter by holding P0.14 low 
during
> >> reset. All other pins are free to use.
> 
> > I know - that's the one I *have* researched, since I plan to do 
it. I've
> > skimmed over the JTAG stuff, however!
> 
> > Lots of people seem to be interested in the secondary JTAG 
interface, so
> > I'm keen to get a description of the tradeoffs and issues put up 
on a
> > page so we can just point people at it when they ask rather than 
needing
> > to go through it each time.
> 
> > ABS
> 
> 
> 
>  
> > Yahoo! Groups Links