Lpc2000

Thanks Dave.  Thanks particularly to TwentyOne who helped me get the settings right after receiving a wiggler-compatible from Olimex.  With the latest version of h-jtag it works great for me when the jtag configuration is right.  The trick was with the nSRST option - I had it = [No Sys Rst] when Wiggler (predefined) was active.  When changed to = [Pin 6  D4] it detected the target and started working like a dream.  Rock solid.  Note, nTRST remains = [Pin2  D0] with output inverted.  nSRST should not be inverted.  All other jtag settings are locked when Wiggler (predefined) is active.

Karim


-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf
Of derbaier
Sent: Tuesday, February 14, 2006 7:31 AM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: H-JTAG update - new release from TwentyOne works
with LPC :)


--- In lpc2000@yahoogroups.com, "Karim Virani" <karim@...> wrote:
>
> Hi,
> 
> I'm trying to use the version downloaded from your site with IAR,
but it's not detecting the target - it advises me to check connections
and power.  This is on a system (Thinkpad R51) that refuses to work
with OCD Commander at any speed, probably because it's too fast.  It
works fine with Rowley.  I'm using the Olimex wiggler-clone.  Has
anyone seen similar issues with H-JTAG? Does it have limitations with
regard to system speed or port configuration - ECP/EPP/Bidirectional?  
> 
> Is Olimex coming out with an affordible USB JTAG anytime soon?
> 
> Thanks, Karim
> 

Karim, I have used H-JTAG with an IBM Thinkpad T23, and the more
recent versions of H-JTAG work great with it.  If you are using H-JTAG
with the Olimex Wiggler clone, I seem to recall that H-JTAG as it is
downloaded is not correctly configured for the Olimex Wiggler clone.
You need to go into H-JTAG's configuration section and set it up to
correctly work with the Olimex Wiggler clone. If you do not do that,
you will get the check connections and power message, and H-JTAG will
not work with anything.  I use it with ARM SDT2.51, but I have tried
it with the 32k demo version of IAR and it works fine. I'm sorry but I
can not recall right now which settings that I had to adjust to get
H-JTAG to work with the Olimex Wiggler clone, but it will work with it
if you get the settings correct.

-- Dave






 
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