Installation on the Pogoplug Series 4

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Re: Installation on the Pogoplug Series 4

Postby jonnojohnson » Thu May 02, 2013 7:26 pm

mlitke wrote:Just a follow up to my post. The location where the J11 pins attach are indeed holes that go all the way through and are just filled with solder. I have attached a header and can see the boot messages. If there is any interest, I can dump them here.


I'm curious about your header and cable. I noticed that the holes are 0.079" (2mm) pitch rather than the 0.1" of the pink version which matches a CD-ROM audio cable/header.
I'm not much of a hardware hacker so all advice would be useful.
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Re: Installation on the Pogoplug Series 4

Postby bodhi » Mon May 06, 2013 4:38 am

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Re: Installation on the Pogoplug Series 4

Postby jonnojohnson » Tue May 14, 2013 4:37 pm

Ok I have a header attached and one of these USB-TTL converters: http://www.amazon.com/dp/B00C8KGRRA/ref ... 25410_item
Only the converter above is connected to 5V rather than 3.3V like so:
usb-ttl.png
usb-ttl.png (172.24 KiB) Viewed 3775 times

I suppose I need to move that connection over?
Also just want to confirm that the TxD on the USB-TTL converter gets connected to RxD on the PP as labeled here:
Image
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Re: Installation on the Pogoplug Series 4

Postby WarheadsSE » Tue May 14, 2013 5:31 pm

Do not attach vcc!
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Re: Installation on the Pogoplug Series 4

Postby jonnojohnson » Tue May 14, 2013 5:36 pm

emkay wrote:From top to bottom (where top is nearest to the sdcard tray* and bottom is nearest the side with the connectors):

  • - ground
  • - rx
  • - tx
  • - 3.3v

This is for the PPv4 - I don't know if the Mobile has the same pinout, but I would be surprised if theres a difference...

Make sure to use a level shifter to TTL 3.3v and connect gnd with gnd, 3.3v with 3.3v, rx with tx, tx with rx.

EmKay

* the mobile does not have SDcard... So: look from top onto the PP and have the connectors for USB, network, power facing south ;)


So this post is wrong WarheadsSE? Makes things easier if so.
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Re: Installation on the Pogoplug Series 4

Postby WarheadsSE » Tue May 14, 2013 8:22 pm

Shall I put in large bold?

While emkay has the correct pin out, he is in error about connecting Vcc. The board supplies its own power, thus, attaching Vcc is entirely erroneous, and possibly damaging.
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Re: Installation on the Pogoplug Series 4

Postby jonnojohnson » Wed May 22, 2013 6:15 pm

Ok I have everything hooked up but I'm seeing nothing come through Hyperterminal.
Any suggestions how to debug? Never used hyperterminal for a serial connection before.
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Re: Installation on the Pogoplug Series 4

Postby pepedog » Wed May 22, 2013 6:33 pm

If it was me, I would have used putty.
I would test converter first by connecting rx and tx to see if typing echoed back
You the connect rx to tx, and tx to rx. Then gnd to gnd
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Re: Installation on the Pogoplug Series 4

Postby jonnojohnson » Wed May 22, 2013 6:45 pm

I tried Putty but when I set up the serial connection and hit Open it does nothing (I get that Windows "ding" sound). I'm on Win7 by the way.

Ok this is probably really dumb but I don't follow the loopback suggestion.
I have 4 connections from my USB-TTL, 5V, Tx, Rx and ground. Do you mean I should connect the Tx and Rx together?
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Re: Installation on the Pogoplug Series 4

Postby jonnojohnson » Wed May 22, 2013 6:57 pm

So if I connect Tx to Rx on the far end of my USB-TTL cable and type into Hyperterminal I see what I type. Does this mean I'm receiving it back or is this just what I'm sending?

Edit: Confirmed that the above method is correct and that loopback is working for my USB-TTL converter.
I then hooked up to the PPv4 and briefly got some random characters back. Nothing since then though.
Progress of a sort...
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