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Thread

Trouble with JTAG

Trouble with JTAG

2005-11-22 by Howard Amos

I am using a mega32 with my own PCB (no JTAG socket). Started using an
ISP programmer (Avtiv8r from Meridian). In setting all the fuses I
disabled JTAG (had no use for it)...

How I have just bought an AVR JTAG ICE (from kanda.com) and want to
debug using JTAG.

My PORTC comes out to a 10 pin strip, so I make a cable to connect to
the JTAG cable on the ICE.

I turn on JTAGEN and OCDEN using the ISP programmer.

Trouble is, PortC.2 (TCLK) is OUTPUTTING a '1'. The ICE wants to drive
a '0'.

As I understand things, when JTAG is enabled, TCLK should be an input
to the AVR, so therefore I cannot have JTAG enabled.

So I stop and restart my ISP programmer, and READ the fuses. JTAGEN
and OCDEN are enabled (programmed), but TCLK is still an OUTPUT.

Any ideas.

Many thanks,

Howard Amos

Re: Avrfreaks down?

2005-11-23 by Dave Mucha

I saw a note that the site was hacked and will be down for a few days.

Dave



--- In AVR-Chat@yahoogroups.com, N S <MrMicro@g...> wrote:
>
> I've been getting "server cannot be found" for about 3 days, everyone 
> else getting that too?
> 
> 
> -- 
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.362 / Virus Database: 267.13.5/178 - Release Date:
22/11/2005
>

Avrfreaks down?

2005-11-23 by N S

I've been getting "server cannot be found" for about 3 days, everyone 
else getting that too?


-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.362 / Virus Database: 267.13.5/178 - Release Date: 22/11/2005

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