Am 21. Oktober 2015 02:08:01 MESZ, schrieb Element Green 
<elem...@elementsofsound.org>:

>I'm thinking of looking into a different programmer.  This one seems
>too
>problematic.

The Dragon works,but its drivers are not very strong.

You could try fiddling a custom cable with serial terminators (about 
100 ohms) on each driving (tx) side of a line (TDO, TCK, TDI) to reduce 
ringing.

>  Not a lot of options though it seems for debugging over
>PDI
>in Linux.

Apart from the older JTAGICEmkII, right now, that would only be the 
JTAGICE3 running the older (non-HID) firmware version.

It ought to be possible to also get the newer HID firmware working 
(and thus also support the much cheaper Atmel-ICE, its bare PCB is 
even cheaper than the Dragon), but I didn't find the time and energy 
doing so, and obviously, there's noone else who would start 
that project.

-- 
Viele Grüße, Jörg

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