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Lpc2000

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Message

Re: [lpc2000] Another JTAG issue. Heads up

2006-05-30 by Tom Walsh

Landrum Haddix wrote:

>Hi,
>
>I found a really hard to track down hardware problem today
>that was forcing the JTAG port to not work.
>
>I am using an LCP2138 and JTAG quit working after a board rev.
>
>We had pulled P0.31 down because it was the enable for a 485
>transciever and needed to be low during reset.
>
>  
>
Just a note, I got nailed by this one. Even though I "knew better", 
fortunately it only took a few minutes to realize the mistake on the 
prototype wiring. Another hour for microscopic surgery though. :-(

TomW

-- 
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."
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