Dragon or JTAG-MKII

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#1
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Hi Guyzz

I have just dusted off my old NGW100 , and have succesfully upgraded uboot with my JTAG-MKII.

But seeing that the new Dragon firmware in "AVR-Studio 8-bit 4.18-SP2" , has lifted the limitations on the 8-bit mcu's (except some PDI issues , where the (new) MKII still have an advantage).

I was wondering if someone could tell if a Dragon could be used as a JTAG-MKII substitute in the AVR32 environment ?

What can the Dragon "do & not do" , compared to a JTAG-MKII.

TIA

/Bingo

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JTAGICE mkII can do simple trace, and is a bit faster than the AVR Dragon.

Hans-Christian

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@hce

Thanx for the info :-)

Does the above mean that the Dragon can't be used for debugging in AVR32 Studio ?

Or is "simple trace" something else ?

/Bingo

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Trace is high level debugging, it is used for run time view of the running application. So that you go in after a break and look at the program flow until that point.

AVR Dragon covers most peoples need, if looking away from speed.

Hans-Christian

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@hce

So a Dragon would be the same as a JTAG-MKII ,but slower.

Once again Thanx :-)

/Bingo

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Hmmm....

@hce

Are you sure about the above ?

https://www.avrfreaks.net/index.p...

I have an Oooooollldd Dragon (pre "mounting holes") , so maybe i'm lucky ... But ?

/Bingo

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Bingo600 wrote:
Are you sure about the above ?

https://www.avrfreaks.net/index.p...

I have an Oooooollldd Dragon (pre "mounting holes") , so maybe i'm lucky ... But ?

I have an AVR Dragon revision D of the PCB, A08-0396.D printed on the back, produced in 20081030. It works fine with my AVR32 boards, just programmed U-Boot twice without any issues.

I think this must be related to not optimal pull-ups on the JTAG lines.

Hans-Christian