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December 31, 2009 12:00 AM

Categories: PogoPlug Development

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sjhill

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Joined: 12/20/2009

Can anyone from CE provide the pinouts for the two connectors labeled J1 and CON3 on the v2 hardware board? I would lay odds the CON3 is a serial port, I really hope so. J1 has 8 pins, that's most certainly JTAG. Thanks.

Steve

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Generic Member Avatar
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December 31, 2009 9:04 AM

Can you post a photo of the board?

sjhill Avatar
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December 31, 2009 1:53 PM updated: December 31, 2009 1:58 PM

Photobucket Photobucket Photobucket Photobucket Photobucket Photobucket I measured the voltages on CON3 with a DMM and three of the pins had 3.32V and the last one was ground.

Generic Member Avatar
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December 31, 2009 2:28 PM updated: December 31, 2009 2:32 PM

Thanks for the photos!

The connectors look a  lot like the connectors on the original board. The original board had the pin designations silk-screened for the serial console on the 4 pin connector. I'm guessingthat the pinouts are the same.

Can Cloud Engines confirm they are the same?

deatial of pogoplug V1 board

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Cloud Engines
  • member since: 05/05/2009
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December 31, 2009 4:14 PM

CON3 is a v3.3 serial port for console.  It can use the same level shifted serial ports as the v1 boards.  the Pitch of the connector is different, but the signals are the same.  Here is the signal definitions:

 

sjhill Avatar
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December 31, 2009 4:29 PM

So if the connector pitch is different, what Molex connector do we need now to wire up the serial port? Thanks Brad!

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Cloud Engines
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December 31, 2009 4:32 PM

The ones that I use at our office is:

http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.z_hom...

sjhill Avatar
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December 31, 2009 4:48 PM

Very cool, I'm going to order some of those right now. Thanks!

sjhill Avatar
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January 6, 2010 9:31 AM

I got the connectors in. I just bought 25 of them for the price. If anyone wants a connector to make their own serial cable, just PM me with your address and I'll send one to you.

sjhill Avatar
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January 9, 2010 11:45 PM updated: January 9, 2010 11:56 PM

Photobucket

I now have the serial console wired up and working with the new Pogoplug v2. I just posted the picture of the pinout of the port. The link to the complete output is here:  http://pastebin.com/f1efc6125 .

sjhill Avatar
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January 21, 2010 10:28 AM updated: January 21, 2010 10:29 AM

Will I be in any danger using a U-Boot for the SheevaPlug on my PogoPlug? If they are the same hardware accept for the amount of NAND flash and a couple of peripherals, I would expect things to go okay. I plan on using the U-Boot listed here:

U-Boot Upgrade

Has anyone else attempted this yet on the Pink v2? I'm doing this because it appears that USB support in U-Boot itself is turned off. Thanks.

Steve

Generic Member Avatar
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January 21, 2010 11:25 AM updated: January 21, 2010 11:26 AM

@sjhill
The sheevaplug u-boot is NOT compatible with the Pogoplug. The reason being the difference in RAM. I tried it on the V1 plug. After installing the sheevaplug u-boot I got a u-boot prompt but I was not able to boot a kernel because of the RAM difference.

Booting the kernel from USB is not supported in the Pogoplug u-boot.

I was able to compile the Sheevaplug uBoot 3.4.16 to work with the Pogoplug and boot the kernel from USB as described in:
http://openpogo.com/forum/viewtopic.php?id=72

I found that booting the kernel from USB was quite unreliable with 3.4.16. I tried to compile the 3.4.19 u-boot without success.

If you want to use another kernel, it can be booted from the spare flash (that OpenPogo uses) or from tftp/nfs.

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August 12, 2010 1:25 PM

Does anyone know the pinout of J1? Is it jtag and is there a diagram of which pins are which?

Generic Member Avatar
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August 20, 2010 12:46 AM

WPAYNTER said: Does anyone know the pinout of J1? Is it jtag and is there a diagram of which pins are which?
From the 7th picture down from the top in this post, you can see the pinout from the silkscreen mask -- seems unlikely it would've changed from the first spin. The signals are definitely JTAG:

3.3v

RES

TMS

CLK

TDO

SRST

TDI

GND

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