Add a Serial port to the PowerPC Linkstation - Revision history

Marcaureleii: /* Method 1 (easier) */

Marcaureleii — Sun, 15 Nov 2009 11:45:52 GMT

Method 1 (easier)

← Older revision		Revision as of 11:45, 15 November 2009
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	== Stage 3 - Enable Full Serial Tx/Rx ==		== Stage 3 - Enable Full Serial Tx/Rx ==
	===Method 1 (easier)===		===Method 1 (easier)===
-	*To enable write support across the serial port bridging r76 with a short piece of wire	+	*To enable write support across the serial port bridging r76 with a short piece of wire or just with some soldering
	*IN SHORT, ALL THAT IS NECESSARY TO GET 2 WAY SERIAL COMMUNICATION ON THE KURO HG, HD, AND PPC LINKSTATIONS IS TO BRIDGE THE CONTACTS FOR THE SERIES RESISTOR AT R76.		*IN SHORT, ALL THAT IS NECESSARY TO GET 2 WAY SERIAL COMMUNICATION ON THE KURO HG, HD, AND PPC LINKSTATIONS IS TO BRIDGE THE CONTACTS FOR THE SERIES RESISTOR AT R76.
	http://forum.buffalo.nas-central.org/viewtopic.php?f=42&t=9186		http://forum.buffalo.nas-central.org/viewtopic.php?f=42&t=9186

Ramuk: /* Stage 3 - Enable Full Serial Tx/Rx */

Ramuk — Wed, 20 May 2009 18:51:43 GMT

Stage 3 - Enable Full Serial Tx/Rx

← Older revision		Revision as of 18:51, 20 May 2009
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	== Stage 3 - Enable Full Serial Tx/Rx ==		== Stage 3 - Enable Full Serial Tx/Rx ==
		+	===Method 1 (easier)===
		+	*To enable write support across the serial port bridging r76 with a short piece of wire
		+	*IN SHORT, ALL THAT IS NECESSARY TO GET 2 WAY SERIAL COMMUNICATION ON THE KURO HG, HD, AND PPC LINKSTATIONS IS TO BRIDGE THE CONTACTS FOR THE SERIES RESISTOR AT R76.
		+	http://forum.buffalo.nas-central.org/viewtopic.php?f=42&t=9186
		+
		+	===Method 2 (original)===
	[[Image:Kuro-r76.jpg\|thumb\|Right\|200px\| To enable write support across the serial port, remove the 10K ohm pullup resistor from R75 and install it , or another 10K ohm pullup resistor, to R76. From http://www.larwe.com ]]		[[Image:Kuro-r76.jpg\|thumb\|Right\|200px\| To enable write support across the serial port, remove the 10K ohm pullup resistor from R75 and install it , or another 10K ohm pullup resistor, to R76. From http://www.larwe.com ]]
	*To enable write support across the serial port, remove the 10K ohm pullup resistor from R75 and install it , or another 10K ohm pullup resistor, to R76.		*To enable write support across the serial port, remove the 10K ohm pullup resistor from R75 and install it , or another 10K ohm pullup resistor, to R76.
	[[Image:HG_J1_RXTX_enable.jpg\|thumb\|Right\|200px\| HG hardware requires different procedure. Instead of adding 10K ohm, a short wire connecting two pads perpendicular to R69 worked for me (I replaced R69 with 10K ohms, you can keep the original part.)]]		[[Image:HG_J1_RXTX_enable.jpg\|thumb\|Right\|200px\| HG hardware requires different procedure. Instead of adding 10K ohm, a short wire connecting two pads perpendicular to R69 worked for me (I replaced R69 with 10K ohms, you can keep the original part.)]]

-	===Desoldering Tip===	+	====Desoldering Tip====
	To desolder an SMD resistor you can apply the following trick:		To desolder an SMD resistor you can apply the following trick:
	* Take a short piece of blank wire and bend one end into a small U-shape using some small pliers. The U-shape should be as such that you can touch the sides of both ends of the resistor at the same time. The width of the U should basically be the length of the resistor.		* Take a short piece of blank wire and bend one end into a small U-shape using some small pliers. The U-shape should be as such that you can touch the sides of both ends of the resistor at the same time. The width of the U should basically be the length of the resistor.

Ramuk at 13:30, 18 August 2007

Ramuk — Sat, 18 Aug 2007 13:30:50 GMT

← Older revision		Revision as of 13:30, 18 August 2007
Line 64:		Line 64:

	== Stage 4 - The Serial Converter ==		== Stage 4 - The Serial Converter ==
-	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased
	{{Level Shifter}}		{{Level Shifter}}

Ramuk at 13:29, 18 August 2007

Ramuk — Sat, 18 Aug 2007 13:29:36 GMT

← Older revision		Revision as of 13:29, 18 August 2007
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	== Stage 4 - The Serial Converter ==		== Stage 4 - The Serial Converter ==
-	~~===Buy One===~~	+	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased
-	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased~~: See [[Serial_port#Buy_a_TTL.2FRS232_or_TTL.2FUSB_interface \| Serial port: Buy a TTL/RS232 or TTL/USB interface]]~~	+	{{Level Shifter}}
-		+
-	~~===Build One===~~	+
-	~~[[Building a Custom Serial Interface]]~~	+

	== Stage 5 - Using the Serial Console ==		== Stage 5 - Using the Serial Console ==

Ramuk at 03:59, 18 August 2007

Ramuk — Sat, 18 Aug 2007 03:59:57 GMT

← Older revision		Revision as of 03:59, 18 August 2007
Line 65:		Line 65:
	== Stage 4 - The Serial Converter ==		== Stage 4 - The Serial Converter ==
	===Buy One===		===Buy One===
-	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased: See [[Serial ~~Port~~]]	+	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased: See [[Serial_port#Buy_a_TTL.2FRS232_or_TTL.2FUSB_interface \| Serial port: Buy a TTL/RS232 or TTL/USB interface]]
-		+

	===Build One===		===Build One===

Ramuk at 03:55, 18 August 2007

Ramuk — Sat, 18 Aug 2007 03:55:37 GMT

← Older revision		Revision as of 03:55, 18 August 2007
Line 65:		Line 65:
	== Stage 4 - The Serial Converter ==		== Stage 4 - The Serial Converter ==
	===Buy One===		===Buy One===
-	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased ~~from~~	+	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased: See [[Serial Port]]
-	~~[http~~:~~//www.superdroidrobots.com/shop/item.asp?itemid=335&catid=41 SuperDroid Robots] (#MCU-026-172) or~~ [~~http://www.compsys1.com/workbench/ CompSys~~] ~~(#A232DBH3v).~~	+

	===Build One===		===Build One===

Ramuk: /* Build One */

Ramuk — Sat, 18 Aug 2007 03:22:32 GMT

Build One

← Older revision		Revision as of 03:22, 18 August 2007
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	===Build One===		===Build One===
-	~~: As an alternative you can make the level shifter cable yourself:~~	+	[[Building a Custom Serial Interface]]
-	[[~~Image:Shifter.jpg\|400px]]~~	+
-	~~: Components can be found at e.g. [http://www.digikey.com Digikey]~~	+
-		+
-	* If you want to build your own serial converter, you will need the following parts:	+
-	* (5) 0.1 uF resin dipped capacitors (Monroes), 16V	+
-	* (1) MAX3232CPE IC (Maxim), 3V type, 16 pin DIL	+
-	* (1) Right angled RS232 male socket	+
-	* (1) 10 element stripboard	+
-	* (1) 16 pin chip mount	+
-	* (1) Wire	+
-		+
-		+
-	~~You can also etch~~ a ~~circuit board which makes building the interface and installing the interface really easy. Instructions are [http://www.kurobox.com/mwiki/index.php/Building_a_Custom_Serial_Interface Here~~].	+
-		+
-	~~This should be attached as close as possible to the board. The signals are very weak and wires as short as 2" (5 cm) have been reported to cause data loss across the serial port.~~	+
-		+
-		+
-	* [http://en.wikibooks.org/wiki/Serial_Programming:MAX232_Driver_Receiver Some details about the MAX232 family]	+
-	* [http://pdfserv.maxim-ic.com/en/ds/MAX3222-MAX3241.pdf Original manufacturer's MAX RS32xx Family Datasheet]	+

	== Stage 5 - Using the Serial Console ==		== Stage 5 - Using the Serial Console ==

67.162.30.158: /* External Links */

67.162.30.158 — Sun, 08 Oct 2006 09:59:50 GMT

External Links

← Older revision		Revision as of 09:59, 8 October 2006
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	==External Links==		==External Links==
		+	* http://www.nslu2-linux.org/wiki/HowTo/AddASerialPort
	* http://www.kurobox.com/mwiki/index.php/Add_Serial_Port		* http://www.kurobox.com/mwiki/index.php/Add_Serial_Port
	* http://www.larwe.com/technical/kuro_serial.html		* http://www.larwe.com/technical/kuro_serial.html
	* http://www.type-g.com		* http://www.type-g.com
-	* http://www.kurobox.com http://www.tldp.org	+	* http://www.kurobox.com
		+	* http://www.tldp.org

89.52.219.158: Corrected RS232 voltage (yes, it is 12V or even more)

89.52.219.158 — Fri, 01 Sep 2006 10:12:00 GMT

Corrected RS232 voltage (yes, it is 12V or even more)

← Older revision		Revision as of 10:12, 1 September 2006
Line 65:		Line 65:
	== Stage 4 - The Serial Converter ==		== Stage 4 - The Serial Converter ==
	===Buy One===		===Buy One===
-	The serial port signals from the processor are only 3.3V. For proper RS-232 5V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased from	+	The serial port signals from the processor are only 3.3V. For proper RS-232 12V signaling, an RS-232 level shifter needs to be added. These are very common in PDA serial cables also, but can be purchased from
	[http://www.superdroidrobots.com/shop/item.asp?itemid=335&catid=41 SuperDroid Robots] (#MCU-026-172) or [http://www.compsys1.com/workbench/ CompSys] (#A232DBH3v).		[http://www.superdroidrobots.com/shop/item.asp?itemid=335&catid=41 SuperDroid Robots] (#MCU-026-172) or [http://www.compsys1.com/workbench/ CompSys] (#A232DBH3v).

Ramuk at 16:46, 23 August 2006

Ramuk — Wed, 23 Aug 2006 16:46:07 GMT

← Older revision		Revision as of 16:46, 23 August 2006
Line 70:		Line 70:
	===Build One===		===Build One===
	: As an alternative you can make the level shifter cable yourself:		: As an alternative you can make the level shifter cable yourself:
-	[[Image:Shifter.jpg]]	+	[[Image:Shifter.jpg\|400px]]
	: Components can be found at e.g. [http://www.digikey.com Digikey]		: Components can be found at e.g. [http://www.digikey.com Digikey]