Register Guidelines E-Books Search Today's Posts Mark Forums Read

Go Back   MobileRead Forums > E-Book Readers > Amazon Kindle > Kindle Developer's Corner

Notices

Reply
 
Thread Tools Search this Thread
Old 08-29-2010, 12:25 PM   #1
ichinomoto
Junior Member
ichinomoto began at the beginning.
 
Posts: 2
Karma: 10
Join Date: Dec 2009
Device: kindle2i, kindle DXi, kindle 3G+Wi-Fi
Kindle3 serial line

serial line is here.


Trancerate to English..

Please tell me, how can I get root account?

Last edited by ichinomoto; 08-29-2010 at 12:30 PM.
ichinomoto is offline   Reply With Quote
Old 08-31-2010, 01:40 PM   #2
Dibblah
Member
Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.
 
Posts: 15
Karma: 26592
Join Date: Aug 2010
Device: Kindle 3
Interesting. The connector means that the serial port is for the first time accessible externally, with no hacking of the Kindle required.

The PCB has to be around 1mm thick or slightly thinner, which means you need to sand down a normal board before it fits. The track spacing is 1.5mm with 1mm width tracks.

Unfortunately, the serial port is 1.8v, which is lower than my DKU-5 Nokia cable goes. I do see good (continuity) connections using this method to the Kindle, though.




Above is a picture of the serial connector - it connects as follows:



Cheers,

Allan.

Last edited by Dibblah; 08-31-2010 at 01:42 PM.
Dibblah is offline   Reply With Quote
Old 08-31-2010, 03:24 PM   #3
markatlnk
Member
markatlnk began at the beginning.
 
Posts: 12
Karma: 10
Join Date: Aug 2010
Device: kindle 3
Level translation is not that big of a problem, what does it take to make it talk through that. Do I just get a command prompt??????
markatlnk is offline   Reply With Quote
Old 08-31-2010, 05:45 PM   #4
Dibblah
Member
Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.
 
Posts: 15
Karma: 26592
Join Date: Aug 2010
Device: Kindle 3
Sucess. I have a u-boot prompt (not locked down) with a FET level converter.

Cheers,

Allan.
Dibblah is offline   Reply With Quote
Old 08-31-2010, 06:50 PM   #5
markatlnk
Member
markatlnk began at the beginning.
 
Posts: 12
Karma: 10
Join Date: Aug 2010
Device: kindle 3
What did you end up with on the width of the connector, from the pic, looks like 5.5mm. Also what baud rate is it using. I'm not new to Linux, just new to the arm versions.
markatlnk is offline   Reply With Quote
Old 09-01-2010, 07:59 AM   #6
Dibblah
Member
Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.
 
Posts: 15
Karma: 26592
Join Date: Aug 2010
Device: Kindle 3
6mm or so. 115200, N, 8, 1. Beware, it is a 1.8v port - If you apply 3.3v to it, you may well damage it.

Cheers,

Allan.
Dibblah is offline   Reply With Quote
Old 09-01-2010, 08:02 AM   #7
Dibblah
Member
Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.
 
Posts: 15
Karma: 26592
Join Date: Aug 2010
Device: Kindle 3
Unfortunately, I can see no sign that uboot passes through the bootargs. Which means we can't just tag on init=/bin/sh.

You can also get to recovery mode (not just uboot) straight from the serial port by pressing a key at the right time.

Cheers,

Allan.
Dibblah is offline   Reply With Quote
Old 09-01-2010, 04:34 PM   #8
blkhawk
Bit Wrangler
blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.
 
blkhawk's Avatar
 
Posts: 31
Karma: 93324
Join Date: Sep 2010
Device: Oasis
Etched Serial adapter

Hi,
I just got my kindle today and since I am general interested in modifying the firmware of devices i posses I will be etching myself a proper serial plug from PCB material - since i could just as well etch a whole bunch of them i wanted to ask if there is interest here for them?

Cost including postage would be less than 5 EUR - I am looking in gold/nickel plating too

Adding an level converter could also be done but would raise costs.

MFG

-blkhawk
blkhawk is offline   Reply With Quote
Old 09-01-2010, 09:32 PM   #9
markatlnk
Member
markatlnk began at the beginning.
 
Posts: 12
Karma: 10
Join Date: Aug 2010
Device: kindle 3
I would be interested, adding a FT232 USB chip on there would allow direct connection to most computers, it would significantly bump cost, but might be able to sell quite a few. If you do just the adapter, would that include postage to USA?



Mark
markatlnk is offline   Reply With Quote
Old 09-01-2010, 11:14 PM   #10
blkhawk
Bit Wrangler
blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.
 
blkhawk's Avatar
 
Posts: 31
Karma: 93324
Join Date: Sep 2010
Device: Oasis
Cost as as well as manufacturing complexity. And cost for postage - I had planned to send the adapter glued to a postcard but an adapter with active components would be so expensive that I would feel uncomfortable about the risk losing a few and having to send replacements out.

I could make a version that you have to populate with a FT232r, a smd mini-usb plug , a 1.8v source and two capacitors.

-blkhawk
blkhawk is offline   Reply With Quote
Old 09-01-2010, 11:46 PM   #11
markatlnk
Member
markatlnk began at the beginning.
 
Posts: 12
Karma: 10
Join Date: Aug 2010
Device: kindle 3
That would be great, just sell the board without parts. If someone just wants the 4 wires, they could just tack the wires on. For those that want full USB connection could put all the parts on. Standard FR4 is 0.062 is too thick, so the next standard size down is 0.031 I think so that will cost a bit more also.
markatlnk is offline   Reply With Quote
Old 09-02-2010, 02:44 AM   #12
Dibblah
Member
Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.Dibblah is not intimidated by interfenestral monkeys.
 
Posts: 15
Karma: 26592
Join Date: Aug 2010
Device: Kindle 3
I have just measured the current board I'm using properly - The PCB is 0.90mm.

I would seriously suggest that anyone considering a proper run of boards first makes a prototype to ensure that my measurements are OK.

Cheers,

Allan.
Dibblah is offline   Reply With Quote
Old 09-02-2010, 07:04 AM   #13
blkhawk
Bit Wrangler
blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.blkhawk is far, far better than a slap in the face with a wet fish.
 
blkhawk's Avatar
 
Posts: 31
Karma: 93324
Join Date: Sep 2010
Device: Oasis
Well I would etch the board myself - so far i haven't seen enough interest for it to make more than one for myself or invest the time to build a prototype with USB. Quite frankly i have more usb to serial adapters than i can use.
blkhawk is offline   Reply With Quote
Old 09-02-2010, 11:10 AM   #14
Tiersten
Guru
Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.Tiersten shines like a glazed doughnut.
 
Posts: 987
Karma: 8641
Join Date: Aug 2010
Device: Kindle 3G+WiFi
I'd want 2 or 3. I'm in the UK.
Tiersten is offline   Reply With Quote
Old 09-02-2010, 01:37 PM   #15
filerand
Junior Member
filerand began at the beginning.
 
Posts: 2
Karma: 10
Join Date: Sep 2010
Device: Kindle, Sony PRS-500
For anyone who wants USB, something like the USB FTDI cable at AdaFruit would work quite well: http://www.adafruit.com/index.php?ma...products_id=70

(This particular cable is 3.3v, so I don't know whether it would work at 1.8v, though my experience has been that it works at various voltages.)
filerand is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Classic Okay I Looked at the Kindle3 Pomtroll Barnes & Noble NOOK 52 10-01-2010 10:31 AM
Help - Kindle3 completely frozen blaubach Amazon Kindle 11 09-24-2010 08:52 PM
Troubleshooting kindle3 gmail desrtfreak Amazon Kindle 6 09-22-2010 10:28 PM
Should I get Kindle3 in Germany or USA? oecherprinte Amazon Kindle 7 09-12-2010 11:35 AM
Does calibre2opds work with Kindle3? jeero Amazon Kindle 2 09-10-2010 05:26 AM


All times are GMT -4. The time now is 06:56 AM.


MobileRead.com is a privately owned, operated and funded community.