Getting error: "Could not find supported CPU core on JTAG chain"

Hello Group

I'm using IAR embedded workbench and SAM-ICE with the AT91SAM7L-STK
and I keep getting the error "Could not find supported CPU core on
JTAG chain" when I try to download and debug.

jlink.exe shows the same thing.

Does the SAM-ICE not support the new AT91SAM7L128???

Thanks!

trwinok
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Call IAR.

To: A...
From: t...@cwis.net
Date: Tue, 19 Aug 2008 15:11:35 +0000
Subject: [AT91SAM] Getting error: "Could not find supported CPU core on JTAG chain"

Hello Group

I'm using IAR embedded workbench and SAM-ICE with the AT91SAM7L-STK

and I keep getting the error "Could not find supported CPU core on

JTAG chain" when I try to download and debug.

jlink.exe shows the same thing.

Does the SAM-ICE not support the new AT91SAM7L128???

Thanks!

trwinok

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> I'm using IAR embedded workbench and SAM-ICE with the AT91SAM7L-STK
> and I keep getting the error "Could not find supported CPU core on
> JTAG chain" when I try to download and debug.
>

I'm seeing the same thing on a SAM7L128. I tried upgrading the JLink
DLL to 3.90c with no effect. SAM7S chips work fine, though.
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On Friday 29 August 2008 11:34:31 starmitage wrote:
> > I'm using IAR embedded workbench and SAM-ICE with the AT91SAM7L-STK
> > and I keep getting the error "Could not find supported CPU core on
> > JTAG chain" when I try to download and debug.
>
> I'm seeing the same thing on a SAM7L128. I tried upgrading the JLink
> DLL to 3.90c with no effect. SAM7S chips work fine, though.

Some devices (like the NXP LPC210x parts) disable the JTAG access for security
reasons and you need to execute some code to enable the JTAG interface.

Is the SAM7L maybe something like that?

Alternatively have you tried slower clocking.

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Hi all,
There could be a Device Version Change. I think you may have to fiddle
with the configuration file.
Regards,
OST.

On Fri, Aug 29, 2008 at 5:40 AM, Charles Manning wrote:

> On Friday 29 August 2008 11:34:31 starmitage wrote:
> > > I'm using IAR embedded workbench and SAM-ICE with the AT91SAM7L-STK
> > > and I keep getting the error "Could not find supported CPU core on
> > > JTAG chain" when I try to download and debug.
> >
> > I'm seeing the same thing on a SAM7L128. I tried upgrading the JLink
> > DLL to 3.90c with no effect. SAM7S chips work fine, though.
>
> Some devices (like the NXP LPC210x parts) disable the JTAG access for
> security
> reasons and you need to execute some code to enable the JTAG interface.
>
> Is the SAM7L maybe something like that?
>
> Alternatively have you tried slower clocking.
>
>

--
With Regards,
OST Start a New Thread