MobileRead Forums - View Single Post - Accessing accelerometer data from kindle touch

hawhill · 12-27-2011, 08:55 AM

In the embedded market, such sensors are typically connected to the SoC via an I2C bus (sometimes SPI, but since this isn't really a timing critical device, I think it is probably I2C). Linux might offer access via its generic I2C interface.

Also note that the input event interface is quite standardized on Linux. I'd suggest to compile evtest (a quick search retrieves this: http://cgit.freedesktop.org/~whot/evtest/) and have it dump the data. It might make sense at it is already. If so, and if you're working with C/C++ codebases, there's linux/input.h in the kernel headers (though it will probably only provide you a struct and some constants).

12-27-2011, 08:55 AM	#3
hawhill Wizard Posts: 1,379 Karma: 2155307 Join Date: Nov 2010 Location: Goettingen, Germany Device: Kindle Paperwhite, Kobo Mini	In the embedded market, such sensors are typically connected to the SoC via an I2C bus (sometimes SPI, but since this isn't really a timing critical device, I think it is probably I2C). Linux might offer access via its generic I2C interface. Also note that the input event interface is quite standardized on Linux. I'd suggest to compile evtest (a quick search retrieves this: http://cgit.freedesktop.org/~whot/evtest/) and have it dump the data. It might make sense at it is already. If so, and if you're working with C/C++ codebases, there's linux/input.h in the kernel headers (though it will probably only provide you a struct and some constants).