My Dragon has been slain

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Got a Dragon in a few days ago. Right out of the box, it appears to be faulty. I'm running the latest version of Studio with SP4, latest Dragon firmware. I can program M168s just fine using AVRISP mkII, but the Dragon won't play ball. Using the same cabling, power supply, target board. The board is something I designed for work, so obviously I can't post it. I've tried all the ISP frequencies, tried everything I can think of. No dice.

On another note, the AVRISP mkII isn't faring much better. I built up 2 of the boards I mentioned earlier. The mkII refuses to program one of them, while the old "three resistor" STK200 style programmer works happily with both.

Funky. Any hints?

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What pullup do you have on the /RESET line? If it's too strong, the MKII/Dragon might not be able to assert it.

- Dean :twisted:

Make Atmel Studio better with my free extensions. Open source and feedback welcome!

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10k

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ezcomp..maybe get a mega32 or some other part that supports Jtag and the Dragon to see if the Jtag port is working on the Dragon before you bury it in a ROHS compliant graveyard in Europe? 8)

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There seems to be bugs in Studio, the Dragon keeps on reverting to 1MHz ISP frequency, sometimes with just changing the tab. At other times it will remeber the ISP frequency. Having said that I'm still running SP3 B490 and the biggest problem I'm encountering is that the ISP pins are not being released properly it seems, so using those pins for other purposes becomes a bit of a challenge. BUT the Dragon has been great for this past month, I have developed 2 projects for a client with the Tiny2313 and it has performed very well in DW mode, the latest project is even running at 3.3V without hiccups...well apart from the above.

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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Good suggestions guys. I wonder if Digikey would send me a new one? Might have to call and see...