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Diffstat (limited to 'readme.md')
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@@ -3,11 +3,23 @@ MangOH Motion Service This application is designed to operate on a [MongOH Red](https://mangoh.io/mangoh-red-new) WP85 board. Using **general input output** this project uses pthreads to probe the onboard bmi160 chip intermittently in order to detect a significant motion on the board. ## Prerequisites -Throw in some prereq -## Getting Started +When cloning use ``git clone --recurse-submodule https://github.com/brnkl/motion-service.git`` +to include the util module. + + +## Building Compile the project using -``make wp85`` +wp85: ``make wp85`` + +## Setting Variables +To change the sensitivity of the application you must edit the `motionMonitor/motionMonitor.c` file. +The Accelerometer measures acceleration in 3 dimensions, X, Y, and Z. These dimensions of acceleration are recorded and the magnitude of their resulting vector is calculated using ``double impactMagnitude = sqrt(x * x + y * y + z * z);`` +`#define DEFAULT_THRESHOLD_MS2 17` determines the magnitude of the resulting vector that will trigger the application to detect a sudden impact. + +If adjusting the value of `DEFAUTL_THRESHOLD_MS2` keep in mind that gravity implies a motionless magnitude of -9.8m/s^2 + +As visualized with the red vector here. + -## Setting |