Calibration Library for Sensors

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Task Description

Introduce calibration library into Soletta, calibration is needed to increase accuracy of sensors especially motion sensors such as accelerometer, gyroscope and magnetometer.

Calibration C-API (e.g. soletta/src/lib/calibration)
Calibration FBP node (e.g. soletta/src/modules/flow/calibration)
Calibration Sample App (with C-API and FBP node)

The calibration algorithms and FBP node should be applied to all supported sensor types regardless of

• physical connection of sensors (either through sensor hub or direct connect)
• Logical connection of sensors (either through IIO or non-IIO)

The sample app for calibration should cover following scenario:

• Run time and continuous calibration
• Initialization time calibration (with or without persistent storage)

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@laykuanloon @fulong82 @elvinongbl