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Old 02-04-2010, 04:21 PM   #1
kindx
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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
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Last edited by kindx; 02-05-2010 at 04:43 PM.
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Old 09-25-2010, 10:20 AM   #2
laziogo
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is there a shell available on the serial port ?
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Old 09-25-2010, 10:35 AM   #3
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Code:
/sbin/getty -L 115200 ttymxc0 -l /bin/login
And U-Boot before that.
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Old 09-25-2010, 11:23 PM   #4
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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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