A bit p****d off with JTAG-ICE-MkII fault - NOW HAPPY!

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Hi all,

A word of warning!!!!!

My JTAGICE-MKII has been supplied with a JTAG PROBE which does not match the documentation. I assembled some PCBs today with an ATtiny45-20MU on teh board, there is no ISP connector, we use an 8 pin IC test clip to connect to the chip to programme it.

Following the pin-out listing and colour code given at the very end of the "Connecting to the target through the JTAG interface" I found that AVR Studio 4 always showed the Vtg to be 1.9V (I actually measured it at the device as 3.3V) and I am unable to read or set fuses.

It turns out that the JTAG PROBE board has the 10 pin female straight connector mounted the wrong way around. The indexing key faces the FPC connector, not the green connector as is shown in photographs in the documentation. Interestingly, my probe board has no silk screen legend on it either, so I have marked some pin numbers on it based on the photographs in the documentation.

Nice one Mr Atmel! About 6 hours lost chasing around to find your quality control error, and possibly as many as 6 ATtiny45's looking more than a little sick right now. I can only hope the ICE is not blown up, otherwise I will be even more mightily p****d off.

Dean

Last Edited: Thu. Jun 21, 2007 - 04:38 PM
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AVR ISP/JTAG equipment seems quite susceptible to being fried as well, we used to routinely hot-plug the programmers and ICE mkII until doing so killed the ICE and a couple of programmers. Our local distributor's reaction to this was just to shrug and say "hot-plugging not supported" and leaving us with a $400 paper-weight. They then asked if we wanted to buy another brand new one.

Needless to say we bought a third party debugging interface for MUCH cheaper than Atmel's offerings!

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Geoff,

I have never had an issue with AVRISP or AVRISP-MKII and hot swapping, in fact according to the records here we have eight of the genuine Atmel ones and have never had a problem. We also have a cusom in-house programmer design that uses an 0.5mm FFC cable to attach to the target, it has USB interface and is STK-500 compatible. They are based on an ATmega8 and work very well.

This particular JTAGICE-MKII is my own personal one, I bought the STK500 bundle recently. I had it at work today because the only other USB JTAG dvice in the lab was already in use.

We have some Ecros Technology serial JTAG devices which seem to be bullet-proof, and when I have access to a serial port on a machine it comes out! I usually leave one hidden in my drawer, but don't tell anyone.

Dean

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When i first got my JTAGICE-MKII i accidently plugged it into the STK501 backwards!

i had a very cold feeling when studio warned me to check the orientation of the plug!

but all was well and it connected fine.

BTW the key on mine faces the right angle connector.

Mine was also bought as part of the promotion.

Darren

----------------------------------------------------
Those whom the gods wish to destroy
they must first teach to use c
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Having been really upset when I discovered the problem yesterday, let me tell you how it has all worked out!

DIGIKEY, stand up and be praised.

One phone call, not exactly a short one, but one where from the moment the phone was answered by a human (no IVR there!) I was dealt with efficiently and politely by the three people concerned and I now expect the replacement to be in my hands tomorrow morning.

Only once before have I had to deal with a problem with DigiKey (a connector had been incorrectly packaged by the manufacturer and one body piece was missing, they sent a whole replacement immediately) and on both occasions I have come away a very satisfied customer.

Dean