Lpc2000

At 06:29 PM 10/17/05 +0000, lhaddix wrote:
>I think I will add circuitry to inhibit the external watchdog
>when P0.14 is low. I also want to inhibit the external watchdog
>when my 20pin JTAG is in use.
>
>What can I sense to tell if the JTAG port is connected to an
>emulator?
>
>I thought about counting on one of it's many grounds
>pulling a pin low, but would rather use something that didn't
>depend on certain grounds being connected inside the emulator
>pod.

What about using the pin that enables JTAG in the same manner as you are 
planning on using P0.14?  That doesn't detect the cable presence but it 
does detect JTAG on (so to speak)  It would fail if the cable was present 
and JTAG not enabled but then JTAG won't work in that case anyway ....

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,   be 
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