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Lpc2000

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Message

Re: [lpc2000] newbie question--debugging from flash

2005-02-23 by Aalt Lokhorst

Hello Chris,

Yesterday I build a JTAG Wiggler according to the schematic diagram from 
Leon. (inclusive the strap between DB25_pin8 and DB25_pin15)
I also had some problems to connect at speed-1 until I found some 
information at:

   http://www.mikrocontroller.net/forum/read-2-135959.html

I found a 'workaround' to get a speed=1 connection. Strange enough you 
need to do dummy connect to a RAVEN device first. This wil fail but it 
leaves the interface in the correct state to connect properly for 
WIGGLER. I am using now the next two commands and this works a lot 
better (commands are for WIGGLER at LPT1)

ocdremote -cARM7TDMI-S -dRAVEN -a1 -s1   (results in Internal error 43)

ocdremote -cARM7TDMI-S -dWIGGLER -a1 -s1 (connects correctly)


> the wiggler seems quite unstable--lots of errors while trying to 
 > connect.  It eventually works after a few tries at low speed (8)
 > but doesn't give me much confidence.

-- 
==============================
Aalt Lokhorst
Schut Geometrische Meettechniek bv
Duinkerkenstraat 21
9723 BN Groningen
P.O. Box 5225
9700 GE Groningen
The Netherlands
Tel: +31-50-5877877
Fax: +31-50-5877899
E-mail: Lokhorst@...
==============================

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