Searching for JTAG Adapter or parts for it

[Torsten Wagner]

Hi,

I have troubles to find a JTAG adapter.
Still can't understand why there is a JTAG standard and each and every
company comes up with a different connector for it....
Anyhow
I need a 20pin (100mil, 2.54 mm) ARM (emulator) to 14 pin (50mil,
1.27mm) TI adapter. Something similar I found online here:
http://goo.gl/LDDa3
Beside of the price, I can't order outside of Japan.

I frighten that the adapter I have to use it even not TI but some
other stuff. However, the plug is the same. Thus, I would prefer to
only get the headers and solder them myself according to my needs.

Until know I was not lucky to source the 14pin female header in Japan.

I found this one for ribbon cable
http://de.mouser.com/Search/ProductDetail.aspx?R=90635-1141virtualkey53810000virtualkey538-90635-1141
but I can't order for the university from Mouser (don't ask).

I could get a $150 adapter from TI (via there Japanese branch)... nice
margin $150 dollar vs. $2 for two headers and a piece of PCB....
@Akiba thats the way to do it ;)

If someone has an Japanese online shop at hand or someone who might go
shopping in Akihabara soon, please let me know.

Thanks

Totti

[MRE]

18 pin female, 22 pin male, raw perfboard.
Will check my stock.

[MRE]

Ahh! Not the one you pictured.. but similar. Anyway, the smaller size i usually dont have.

[Akiba]

Oh that sucks. I haven't seen any place with those types of adapters.
Akihabara is probably not the best place to buy something as specialized as
that, even if it's for TI ARM boards. I believe that ARM now uses their
serial wire debug connector which is standardized on by NXP, STMicro, and
emulator manufacturers. Not sure about TI with their Stellaris chips tho.

Akiba
FreakLabs Open Source Wireless
Web: http://www.freaklabs.org
Shop:http://www.freaklabsstore.com
Twitter: http://www.twitter.com/freaklabs

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[Kalin KOZHUHAROV]

May be a bit of overkill, but for $6 is OK.

http://www.ebay.com/itm/180933803562 ?

Kalin.

[Torsten Wagner]

Thanks guys,

well guess its not as easy to find one.
Beside I just noticed its not the 14 pin TI but the 14pin Xilinx plug.
Hahahaha stupid me, who believed that a TI board use a TI JTAG
plug.... NOOOO, on the board is a Xilinx FGPA and therefore its the
Xilinx JTAG plug. Albeit TI and Xilinx use the same physical plug,
they made sure they use different pin config.... hurray, why making it
easy right?
Could go and buy the original Xilinx platform cable for a couple of
hundred dollars but this is really a pain.

I guess the best option I have is to find the 14pin plug and use a
breadboard to jumper the wire to the correct pin config and back to
the 20pin ARM connector of the emulator.

Well thanks again,

Totti

Does somebody here as a legitimate reason why JTAG is such a mess in
terms of connectors?!

[南里 とおる]

You should make the wire harnes with dip-pin pinchers as a photo.
These pinchers were called "IC CLIP" in japan.
You would be found them in akihabara shops as Sengoku-densho.

[Taylan Ayken]

That's why I use female-female jumper cables nearly 90% of the time :)

---

From: Torsten Wagner <torsten...@gmail.com>
To: tokyohac...@googlegroups.com
Sent: Tuesday, October 23, 2012 3:09 PM
Subject: [THS:20671] Re: Searching for JTAG Adapter or parts for it

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[Torsten Wagner]

Yes I do so too...
but please show me jumper wires which fits on pins for 100mill raster
on side and 50mill on the other side. ;)

Totti

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[Torsten Wagner]

Thanks, I have a set of those,
http://www.sunhayato.co.jp/products/details.php?u=876&id=04046
They are expensive but they are really worse the money. Once set, they
are almost as tight as a soldered connection ;)
The problem with those clips, they create quickly a mess, are error
prone and if you need to attach and remove them constantly between
different test-cycles it gets rather fast annoying.
Using cheaper clips which like to jump off by even slight movements or
by touching them is even more frustrating.
I agree that this is the fastest and most flexible solution. Just was
hoping to get an adapter which saves me some time connecting and
disconnecting the JTAG stuff.

Thanks

Totti

[Kalin KOZHUHAROV]

While we are on the debug thread,
I tried a few times to look for ways to debug code on AVR, but somehow
ended up in OneWire and windoze proprietary (paid) software land...

Is there any way to either:
* debug (set breakpoints, eval expressions) a running AVR, say in a
Freakduino + random shield connected somehow to linux PC
* emulate on linux PC, and do the same

(key is linux, if someone missed it).

Kalin.

[Akiba]

Yes, you have to go outside of the IDE though. The IDE creates intermediate
files including a full binary library and modified source code that it
compiles and links with the library. You need to locate those, load it into
AVR Studio, and then you can use something like AVR Dragon to debug. Of
course only pansies use a step debugger. Real men know what they're
programming and don't require a debugger, at least according to his
description of linux kernel devs.

Akiba
FreakLabs Open Source Wireless
Web: http://www.freaklabs.org
Shop:http://www.freaklabsstore.com
Twitter: http://www.twitter.com/freaklabs


> -----Original Message-----
> From: tokyohac...@googlegroups.com

[Torsten Wagner]

For the same reasons real men does not use Flash but OTP uC.
Serious... get it right the first time is the only correct way ;)

Totti