Building a JTAG Interface - Revision history

Variant: added some usful references

Variant — Thu, 24 Jan 2008 16:49:36 GMT

added some usful references

← Older revision		Revision as of 16:49, 24 January 2008
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	Full instructions for building and using Openwince's JTAG tools can be found [[Building_and_using_Openwince%27s_JTAG_Tools\|here]]		Full instructions for building and using Openwince's JTAG tools can be found [[Building_and_using_Openwince%27s_JTAG_Tools\|here]]
	{{Template:Articles\|Kurobox\|Hardware\|JTAG\|Open Contest}}		{{Template:Articles\|Kurobox\|Hardware\|JTAG\|Open Contest}}
		+
		+	==Further reading==
		+	<div class="references-small">
		+	*''http://www.epemag.wimborne.co.uk/desolderpix.htm'', How to de-solder properly and examples of some very bad soldering (if yours looks like this, you need practice!)
		+	*''http://www.epemag.wimborne.co.uk/solderfaq.htm'', Basic soldering guide with best practices and advice on soldering hardware.
		+	</div>

Ramuk: /* Attach the IDE connector Cable */

Ramuk — Mon, 16 Jul 2007 18:25:56 GMT

Attach the IDE connector Cable

← Older revision		Revision as of 18:25, 16 July 2007
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	{\| style="padding: 10px"		{\| style="padding: 10px"
	\|-		\|-
-	\|align="center" nowrap \|[[Image:Nuvola_apps_important.png\|~~Nuvola_apps_important.png~~]]	+	\|align="center" nowrap \|[[Image:Nuvola_apps_important.png\|100px]]
	\|align="left" width="100%"\|<center>'''NOTE: THERE IS A MISSING TRACE ON THE FIRST BATCH OF PRINTED CIRCUIT BOARDS. TO FIX THIS YOU SHOULD BRIDGE FROM PIN 1 OF IC1 TO ANY OF THE SOLDERED D25 CONNECTOR PINS ON THE SOLDER SIDE OF THE BOARD (PINS 18 AND 19 ON THE D25 CONNECTOR ARE CLOSEST). THIS CAN EASILY BE ACCOMPLISHED BY STRIPPING BACK AN EXTRA 1/4" ON THE IDE CONNECTOR J16 WIRE AND USING IT TO BRIDGE TO THE D25 CONNECTOR. THIS CORRECTION IS NOT SHOWN IN ANY OF THE PHOTOS ON THIS PAGE AND IS NOT NECESSARY FOR BOARDS MARKED KURO VER 2'''</center>		\|align="left" width="100%"\|<center>'''NOTE: THERE IS A MISSING TRACE ON THE FIRST BATCH OF PRINTED CIRCUIT BOARDS. TO FIX THIS YOU SHOULD BRIDGE FROM PIN 1 OF IC1 TO ANY OF THE SOLDERED D25 CONNECTOR PINS ON THE SOLDER SIDE OF THE BOARD (PINS 18 AND 19 ON THE D25 CONNECTOR ARE CLOSEST). THIS CAN EASILY BE ACCOMPLISHED BY STRIPPING BACK AN EXTRA 1/4" ON THE IDE CONNECTOR J16 WIRE AND USING IT TO BRIDGE TO THE D25 CONNECTOR. THIS CORRECTION IS NOT SHOWN IN ANY OF THE PHOTOS ON THIS PAGE AND IS NOT NECESSARY FOR BOARDS MARKED KURO VER 2'''</center>
	\|}</div>		\|}</div>

Ramuk at 00:16, 13 July 2007

Ramuk — Fri, 13 Jul 2007 00:16:24 GMT

← Older revision		Revision as of 00:16, 13 July 2007
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	Full instructions for building and using Openwince's JTAG tools can be found [[Building_and_using_Openwince%27s_JTAG_Tools\|here]]		Full instructions for building and using Openwince's JTAG tools can be found [[Building_and_using_Openwince%27s_JTAG_Tools\|here]]
-		+	{{Template:Articles\|Kurobox\|Hardware\|JTAG\|Open Contest}}
-		+
-	~~[[Category:HowTo]]~~	+
-	~~[[Category~~:Hardware]]	+
-	~~[[Category:~~JTAG]]	+
-	~~[[Category:Open_Contest]]~~	+

Ramuk: 95 revision(s)

Ramuk — Thu, 12 Jul 2007 19:26:52 GMT

95 revision(s)

← Older revision

Revision as of 19:26, 12 July 2007

Dtaylor at 14:45, 25 September 2006

Dtaylor — Mon, 25 Sep 2006 14:45:21 GMT

← Older revision		Revision as of 14:45, 25 September 2006
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-	Building a JTAG interface cable can be accomplished in part of an evening by following these instructions. I have built 10 of these and assembled 12 kits with all parts and an etched predrilled circuit board which we are making available to the community in an effort to spur more development ~~(sounds like a contest entry)~~. There is a [http://www.kurobox.com/forums/viewtopic.php?t=1022 thread] in the Forums for discussion and announcememnts regarding the availability of these kits. If you are interested in assembling and distributing kits or have any assembly questions, please post a note in the [http://www.kurobox.com/forums/viewtopic.php?t=1022 forum thread]. If not, then I must assume you are here to assemble your kit, so lets get started.	+	The best way to speed up development, in my opinion, is to make jtag access available to as many people as possible. With Openwince's JTAG tools and one of these cables a user can flash anything to their Kuro and still have the ability to recover. It is this safety net that allows developers to try things that otherwise could render their Kuro useless (except in the case of needing a doorstop). In the time since JTAG access has been made easily available the following list of items has been accomplished. There are more success stories that aren't listed here:
		+
		+
		+	1. Multiple versions of U-boot for the Kuro and Kuro HG has been tested and have had
		+	the bugs worked out with no permanent bricks (and there were several bricks including
		+	my own Kuro). These firmwares would likely not have been tested without access to JTAG
		+	for recovery.
		+
		+	2. A replacement firmware has been released with 2.4.31 kernel that accepts arguments
		+	from the bootloader without requiring NGNG in flash to boot to EM mode.
		+
		+	3. Many damaged boxes which would otherwise be completely useless have been repaired.
		+
		+
		+	Building a JTAG interface cable can be accomplished in part of an evening by following these instructions. I have built 10 of these and assembled 12 kits with all parts and an etched predrilled circuit board which we are making available to the community in an effort to spur more development. There is a [http://www.kurobox.com/forums/viewtopic.php?t=1022 thread] in the Forums for discussion and announcememnts regarding the availability of these kits. If you are interested in assembling and distributing kits or have any assembly questions, please post a note in the [http://www.kurobox.com/forums/viewtopic.php?t=1022 forum thread]. If not, then I must assume you are here to assemble your kit, so lets get started.

Dtaylor at 12:55, 22 August 2006

Dtaylor — Tue, 22 Aug 2006 12:55:47 GMT

← Older revision		Revision as of 12:55, 22 August 2006
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	== Install the Header in the Kuro ==		== Install the Header in the Kuro ==

-	Solder the double pin header into position on the Kuro mother board. ~~The~~ manufacturer of the Kuro filled the jumper holes for the ~~Serial port~~ with solder. Removing the solder from the jumper holes on the Kuro board is simple.	+	Solder the double pin header into position on the Kuro mother board. In some cases the manufacturer of the Kuro filled the jumper holes for the JTAG header with solder. Removing the solder from the jumper holes on the Kuro board is simple.


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	When the solder is flowing nicely, get your mouth about 1" from the front of the board and blow hard into the wet solder while at the same time removing the solder iron. You will blow the solder out of the hole leaving a hole that you can easily put a wire through.		When the solder is flowing nicely, get your mouth about 1" from the front of the board and blow hard into the wet solder while at the same time removing the solder iron. You will blow the solder out of the hole leaving a hole that you can easily put a wire through.
		+
		+
		+	The header should be soldered in place so the jtag cable can be connected on the side of the board with the writing that indicated the pin numbers for the connector and r67 location. Access to the installed header requires removing of the 4 screws that hold the motherboard in place.

Dtaylor: /* What Next */

Dtaylor — Wed, 16 Aug 2006 19:50:06 GMT

What Next

← Older revision		Revision as of 19:50, 16 August 2006
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	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:JTAG]]		[[Category:JTAG]]
-	[[Category:~~OpenContest~~]]	+	[[Category:Open_Contest]]

Dtaylor: /* What Next */

Dtaylor — Wed, 16 Aug 2006 19:42:42 GMT

What Next

← Older revision		Revision as of 19:42, 16 August 2006
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	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:JTAG]]		[[Category:JTAG]]
-	[[Category:~~Open-Contest~~]]	+	[[Category:OpenContest]]

Dtaylor: /* What Next */

Dtaylor — Wed, 16 Aug 2006 19:35:30 GMT

What Next

← Older revision		Revision as of 19:35, 16 August 2006
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	[[Category:Hardware]]		[[Category:Hardware]]
	[[Category:JTAG]]		[[Category:JTAG]]
		+	[[Category:Open-Contest]]

Dtaylor: /* Parts Required */

Dtaylor — Fri, 11 Aug 2006 02:10:40 GMT

Parts Required

← Older revision		Revision as of 02:10, 11 August 2006
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	\| 16 pin Header \|\| 1 \|\| 517-2316-6121TG \|\| -		\| 16 pin Header \|\| 1 \|\| 517-2316-6121TG \|\| -
	\|-		\|-
-	\| Printed Circuit Board \|\| 1 \|\| [http://www.kurobox.com/downloads~~/Hardware~~/JTAG/jtag.pcb circuit board] \|\| Order from [http://www.expresspcb.com www.expressPCB.COM]. 21 boards total for $59. Single boards may also be available from one of the wiki maintainers. Board revised to attach solder side of D25 to ground. Revised board says "kuro ver 2" on it.	+	\| Printed Circuit Board \|\| 1 \|\| [http://www.kurobox.com/downloads/JTAG/jtag.pcb circuit board] \|\| Order from [http://www.expresspcb.com www.expressPCB.COM]. 21 boards total for $59. Single boards may also be available from one of the wiki maintainers. Board revised to attach solder side of D25 to ground. Revised board says "kuro ver 2" on it.
	\|}		\|}