Lpc2000

Hi

I had a simmilar Problem when I built my Jtag clone for the AVR.
The Problem was I forgot to power up the processor.
I your case somethin simmilar must be the problem, since the
Jtag link is recogniced.
Triple check all your power connections to the processor.

Cheers
Michael


>From: "Simon Ansley" <simon@...>
>Reply-To: lpc2000@yahoogroups.com
>To: lpc2000@yahoogroups.com
>Subject: [lpc2000] Newbie problem : Connecting LPC2214 to Segger J-Link
>Date: Sat, 15 Oct 2005 17:39:35 -0000
>
>Hello,
>
>I'm trying to get a new PCB up and running using an LPC2214, but
>cannot get the chip to talk to the JTAG port. I'm fairly new to both
>the processor, and ARM in general, so sorry if this is a really dumb
>problem.
>
>I'm using a Segger J-Link (IAR rebadged) and Rowley compiler.
>
>I have connected to and run test code on the Olimex LPC2214
>development board, so I know the J-Link is OK.
>
>I have checked and double checked the JTAG connection against the
>Olimex schematic.
>
>I have the BSL (P0.14) connected to a pullup. Boot0 and Boot1 are
>open circuit (high through internal pullups). RTCK is pulled low by
>10K.
>
>The processor oscillator is running.
>
>I've scoped the levels on the JTAG interface with the J-Link
>unplugged, and they are identical on my and the Olimex board, with
>the exception of TCK, which is at 0V on my board and approx 0.4V on
>the Olimex board
>
>Whenever I try to connect from the Rowley IDE I get "Too few devices
>on the JTAG bus. Selected Device :0, No. of Devices 0". I guess this
>means the JLink simply can't see the processor for whatever reason.
>
>The board and chip are new, and have not have any code downloaded
>into them. Do I need to download code using the Flash Loader utility
>from the Phillips website, or should I be able to connect straight
>away through the J-Link?
>
>Does everything else sound OK, or could I have got a duff processor?
>
>
>Thanks
>
>Simon Ansley
>
>
>