Kindle DX RS232 Connector

kindx · 02-04-2010, 05:21 PM

Hi,

based on informations about the serial console for DX, I wanted to have a smart way to connect to PC.
First I thought about using the headphone connector for RS232 because I don't need audio, but on the other hand you never can tell.

So I searched for a way to have a second connector, because there is less space I recyled a MP3 player connector (short neck!) and did some cutting and drilling (see attached files).

Now just waiting for the USB-RS232 TTL3.3V adapter to arrive ...

Update:
USB Adapter works fine
Serial Settings are: 115200 baud, 8 data bits, 1 stop bit, no parity, no flow control

laziogo · 09-25-2010, 11:20 AM

is there a shell available on the serial port ?

NiLuJe · 09-25-2010, 11:35 AM

Code:

/sbin/getty -L 115200 ttymxc0 -l /bin/login

And U-Boot before that.

h1uke · 09-26-2010, 12:23 AM

please be aware that the serial console connection gets killed in minutes
if the /mnt/us/DO_NOT_KILL_UART file doesn't exist

See
/etc/init.d/power
and
/etc/rc5.d/S90power
for details.

The above is true for the DXG unit running the 2.5.5 firmware...

Similar technique is used to generate an idle timeout in uBoot on kindle.
Don't know how to cure it -- too boring

HTH,

h1uke

02-04-2010, 05:21 PM	#1
kindx Member Posts: 11 Karma: 10 Join Date: Feb 2010 Device: kindle dxi	Kindle DX RS232 Connector Hi, based on informations about the serial console for DX, I wanted to have a smart way to connect to PC. First I thought about using the headphone connector for RS232 because I don't need audio, but on the other hand you never can tell. So I searched for a way to have a second connector, because there is less space I recyled a MP3 player connector (short neck!) and did some cutting and drilling (see attached files). Now just waiting for the USB-RS232 TTL3.3V adapter to arrive ... Update: USB Adapter works fine Serial Settings are: 115200 baud, 8 data bits, 1 stop bit, no parity, no flow control Attached Thumbnails Last edited by kindx; 02-05-2010 at 05:43 PM.

09-25-2010, 11:35 AM	#3
NiLuJe BLAM! Posts: 13,497 Karma: 26047188 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Code: /sbin/getty -L 115200 ttymxc0 -l /bin/login And U-Boot before that.

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09-25-2010, 11:20 AM	#2
laziogo Junior Member Posts: 1 Karma: 10 Join Date: Sep 2010 Device: kindle dx	is there a shell available on the serial port ?

09-26-2010, 12:23 AM	#4
h1uke Zealot Posts: 121 Karma: 82565 Join Date: Aug 2010 Location: Maryland, USA Device: dxg, k3w,k4nt,kpw	please be aware that the serial console connection gets killed in minutes if the /mnt/us/DO_NOT_KILL_UART file doesn't exist See /etc/init.d/power and /etc/rc5.d/S90power for details. The above is true for the DXG unit running the 2.5.5 firmware... Similar technique is used to generate an idle timeout in uBoot on kindle. Don't know how to cure it -- too boring HTH, h1uke

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