[Tinyos-help] AVR JTAG for ATMega128L (micaZ)

[Andrey Gursky]

Hi Carlos!

I had short conversation here with Janos regarding debugging with JTAG: 
https://www.millennium.berkeley.edu/pipermail/tinyos-help/2008-September/036088.html
https://www.millennium.berkeley.edu/pipermail/tinyos-help/2008-October/036865.html

You have luck, you use MicaZ, because JTAGICE mkII has no clones at all! 
There is only one/two attempt(s) to make one. And it is not a clone, 
rather an implementation of the official protocol. So IRIS with 
atmega1281 can't be debugged without an official device.

What I personally expected from JTAG, was the immediately reaction on 
the commands like next, step. I tried it only with ddd (on Linux) with 
USB Olimex adapter and the reaction was more often slow. So I have no 
fun at all if I need to debug with JTAG. I hope I'd missing some 
know-how, but I'm afraid I'm missing the habit.

Let us know your experience :)


Best wishes,
Andrey




Carlos Gil Soriano wrote:
> Hi,
> 
> we are evaluating about  purchasing an AVR for debbuging micaZ motes. So
> several alternatives have been taking into account (AVRJTAGICE, mkII and
> clone versions of them). As far as we know, AVRJTAGICE seems to be
> uncontinued and the only official alternative from Atmel is mkII. But we
> have also looked towards clone solutions of JTAGICE such as RS232 AVR-JTAG
> or USB AVR-JTAG both from Olimex or  JTAGcable from Propox. Has anyone had
> problems with this JTAGs? Do exist anykind of problems for debugging in T1
> or T2 with this boards? Do USB boards work well?
> 
> Regards,
> Carlos
> 
> 
> 
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