Clemens Valens / Mbed 2 deprecated touchpad

mbed with Nintendo DS touchpad, accelerometer & touchpad.

Dependencies:   mbed

touchpad.h@0:0a76ae27065b, 2010-05-05 (annotated)

Committer:
Clemo
Date:
Wed May 05 12:10:15 2010 +0000
Revision:
0:0a76ae27065b

        

        
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/*





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Touchpad driver.





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CPV, 3/9/2009





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*/





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#ifndef __TOUCHPAD_H__





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#define __TOUCHPAD_H__





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#include "mbed.h"





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#include "filters.h"





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class TouchpadChannel





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{





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public:





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  void initialise(int min, int quantise_step);





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  void tick(int v) { m_filter.tick(v); }





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  int quantise(void);





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  int operator()(void) { return m_quantised; }





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  int get_raw(void) { return m_filter(); }





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protected:





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  FilterBoxI m_filter;





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  int m_min;





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  int m_quantise_step;





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  int m_quantised;





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};





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class Touchpad





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{





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public:





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  Touchpad(PinName x0, PinName x1, PinName y0, PinName y1);





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  void tick(void);





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  int get_raw_x(void) { return m_ch_x.get_raw(); }





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  int get_raw_y(void) { return m_ch_y.get_raw(); }





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  int hotspot(void) { return (m_ch_x.quantise()>=0 && m_ch_y.quantise()>=0); }





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  int get_hotspot_x(void) { return m_ch_x(); }





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  int get_hotspot_y(void) { return m_ch_y(); }





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protected:





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  TouchpadChannel m_ch_x;





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  TouchpadChannel m_ch_y;





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  PinName m_x0;





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  PinName m_x1;





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  PinName m_y0;





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  PinName m_y1;





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  int read(PinName drive_hi, PinName drive_lo, PinName read_hi, PinName read_lo);





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  int read_x(void) { return read(m_x1,m_x0,m_y1,m_y0); }





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  int read_y(void) { return read(m_y1,m_y0,m_x1,m_x0); }





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};





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#endif // __TOUCHPAD_H__