This tutorial explains in a few steps how to build a CircleOS application, how to correclty return to the Circle_OS main menu and how to use some of the functions in the OS to get data from the sensors and draw on the LCD.
    
        
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             Step0 
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             Building an empty application shell 
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             Step1 
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             Creating a limited application to draw a square to the LCD 
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             Step2 
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             Using information from the MEMs sensor to resize the square 
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             Step3 
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             Using optimised MEMs data and graphic routines 
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             Step4 
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             Developing Step3 into a ‘Bubble Level’ on 2 axis 
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See the included PDF document for detailed information.
Revision 1.1 is an update of the tutorial to make it work with CircleOS v1.5.
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