Thread: Investigating the Kindle Oasis
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Old 05-31-2016, 05:38 AM   #14
blkhawk
Bit Wrangler
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Posts: 31
Karma: 93324
Join Date: Sep 2010
Device: Oasis
Some Updates
Still no Serial JB for the Oasis but I thought I should document what I tried so far to prevent double efforts by others.

I combed the board for test points with a serial signal on them and found a group of pins that I could have sworn was the right one (see attached picture). The grouping of 4 pins shows the typical VCC and GND on 2 of the 4 pins as well a logic-level voltages on the other 2 pins. Since there is a small chance I messed up attaching the leads (the pins are fairly small) I will retry the procedure later.

I also tried to find a factory-cable function by building a decade-resistor and attaching it to the usb-id pin on the microusb plug. A range of resistor values in 1 and 5 increments between 1MOhms and 100Ohms in both pullup and pulldown with device reboots and usb plug events produced no definitive reaction from the device.
I had more reaction in the pulldown than with the pullup tests (loss of usb storage connectivity in one test) so somebody might have more luck there. Since it wasn't repeatable it might have been a fluke.

Has anyone else experimented with the Oasis and can maybe share some experiences?
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