MobileRead Forums - View Single Post - I bought an oasis cover while they were on sale to do a destructive teardown.

coplate · 07-15-2017, 01:58 PM

Yeah, the connection to the battery itself has 8 pins, but the connection from the kindle only has 5.

I think that chip I can't identify sites between the kindle and the battery. the 5 pin connector is what I think may be USB, and the SDA, SCL etc are used by that chip to identify a valid battery.

My guess is that either the kindle, or the cover, shows up as a usb gadget on the other one, and charges that way; But it totally could pass some of those lines over instead, the TH, SCL, SDA would give the right number of pins.

Unfortunately, unless someone is able to get a serial connection of some sort on the oasis and confirm with log files while it is connected, I'm not sure that wil be possible.
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Actually, does the ;dm command dump kernel messages?

If so we could ask someone to connect the cover, disconnect it, and then run ;dm, and show us the files. See if there is anything in there about how it is connecting.

07-15-2017, 01:58 PM	#3
coplate Guru Posts: 645 Karma: 1888888 Join Date: Jun 2009 Device: prs-505, Kindle Keyboard 3g, PW3	Yeah, the connection to the battery itself has 8 pins, but the connection from the kindle only has 5. I think that chip I can't identify sites between the kindle and the battery. the 5 pin connector is what I think may be USB, and the SDA, SCL etc are used by that chip to identify a valid battery. My guess is that either the kindle, or the cover, shows up as a usb gadget on the other one, and charges that way; But it totally could pass some of those lines over instead, the TH, SCL, SDA would give the right number of pins. Unfortunately, unless someone is able to get a serial connection of some sort on the oasis and confirm with log files while it is connected, I'm not sure that wil be possible. .. .. Actually, does the ;dm command dump kernel messages? If so we could ask someone to connect the cover, disconnect it, and then run ;dm, and show us the files. See if there is anything in there about how it is connecting.