Lpc2000

Hi Richard,



- concerning 2nd JTAG I wonder if I can use the very same
JTAG ARM Adapter 2x10 Pin to connect to the 2ndary JTAG?

- If so, I can make a board without the primary JTAG and
it is still possible to debug code? Is this correct.

- I do not understand the disadvantages, if I make use of
the 2nd JTAG only. It uses less pins than the primary, and
I always need SW to enable it. Is this correct?

Best Regards
Markus Meng

Richard schrieb:

>I am planning to use the secondary JTAG (LPC2104) in a design.  I 
>have already been debugging (from flash) using the second JTAG by 
>placing a firmware in flash to enable the second JTAG pins and then 
>starting the debugger.
>So, in the actual application, I will have to load the JTAG enable 
>firmware everytime(via ISP)I want to debug or program via the 2nd 
>JTAG port, correct?
>I have dip switches in the design, could I use one of these to 
>trigger software to write to PINSEL1 and enable the 2nd JTAG?
>
>Thanks
>
>Rich
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-- 
Mit freundlichen Gr\ufffdssen
Markus Meng

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