Clemens Valens
mbed with Nintendo DS touchpad, accelerometer & touchpad.
filters.h@0:0a76ae27065b, 2010-05-05 (annotated)
- Committer:
- Clemo
- Date:
- Wed May 05 12:10:15 2010 +0000
- Revision:
- 0:0a76ae27065b
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Clemo | 0:0a76ae27065b | 1 | /* |
| Clemo | 0:0a76ae27065b | 2 | mbed touchpad & accelerometer experiments. |
| Clemo | 0:0a76ae27065b | 3 | |
| Clemo | 0:0a76ae27065b | 4 | CPV, 14/09/2009 |
| Clemo | 0:0a76ae27065b | 5 | */ |
| Clemo | 0:0a76ae27065b | 6 | |
| Clemo | 0:0a76ae27065b | 7 | |
| Clemo | 0:0a76ae27065b | 8 | #ifndef __FILTERS_H__ |
| Clemo | 0:0a76ae27065b | 9 | #define __FILTERS_H__ |
| Clemo | 0:0a76ae27065b | 10 | |
| Clemo | 0:0a76ae27065b | 11 | #define FILTER_MAX_SIZE 16 |
| Clemo | 0:0a76ae27065b | 12 | |
| Clemo | 0:0a76ae27065b | 13 | class FilterBoxF |
| Clemo | 0:0a76ae27065b | 14 | { |
| Clemo | 0:0a76ae27065b | 15 | public: |
| Clemo | 0:0a76ae27065b | 16 | FilterBoxF(void) { initialise(FILTER_MAX_SIZE); } |
| Clemo | 0:0a76ae27065b | 17 | void initialise(unsigned int size); |
| Clemo | 0:0a76ae27065b | 18 | float tick(float in); |
| Clemo | 0:0a76ae27065b | 19 | float get() { return m_out; } |
| Clemo | 0:0a76ae27065b | 20 | float operator()(void) { return m_out; } |
| Clemo | 0:0a76ae27065b | 21 | |
| Clemo | 0:0a76ae27065b | 22 | protected: |
| Clemo | 0:0a76ae27065b | 23 | float m_history[FILTER_MAX_SIZE]; |
| Clemo | 0:0a76ae27065b | 24 | unsigned int m_size; |
| Clemo | 0:0a76ae27065b | 25 | unsigned int m_index; |
| Clemo | 0:0a76ae27065b | 26 | float m_out; |
| Clemo | 0:0a76ae27065b | 27 | }; |
| Clemo | 0:0a76ae27065b | 28 | |
| Clemo | 0:0a76ae27065b | 29 | |
| Clemo | 0:0a76ae27065b | 30 | class FilterBoxI |
| Clemo | 0:0a76ae27065b | 31 | { |
| Clemo | 0:0a76ae27065b | 32 | public: |
| Clemo | 0:0a76ae27065b | 33 | FilterBoxI(void) { initialise(FILTER_MAX_SIZE); } |
| Clemo | 0:0a76ae27065b | 34 | void initialise(unsigned int size); |
| Clemo | 0:0a76ae27065b | 35 | int tick(int in); |
| Clemo | 0:0a76ae27065b | 36 | int operator()(void) { return m_out; } |
| Clemo | 0:0a76ae27065b | 37 | |
| Clemo | 0:0a76ae27065b | 38 | protected: |
| Clemo | 0:0a76ae27065b | 39 | int m_history[FILTER_MAX_SIZE]; |
| Clemo | 0:0a76ae27065b | 40 | unsigned int m_size; |
| Clemo | 0:0a76ae27065b | 41 | unsigned int m_index; |
| Clemo | 0:0a76ae27065b | 42 | int m_out; |
| Clemo | 0:0a76ae27065b | 43 | }; |
| Clemo | 0:0a76ae27065b | 44 | |
| Clemo | 0:0a76ae27065b | 45 | |
| Clemo | 0:0a76ae27065b | 46 | class FilterIirI |
| Clemo | 0:0a76ae27065b | 47 | { |
| Clemo | 0:0a76ae27065b | 48 | public: |
| Clemo | 0:0a76ae27065b | 49 | FilterIirI(void) { initialise(); } |
| Clemo | 0:0a76ae27065b | 50 | void initialise(int tau=1, int limit=0xffff); |
| Clemo | 0:0a76ae27065b | 51 | int tick(int in); |
| Clemo | 0:0a76ae27065b | 52 | int operator()(void) { return m_out; } |
| Clemo | 0:0a76ae27065b | 53 | |
| Clemo | 0:0a76ae27065b | 54 | protected: |
| Clemo | 0:0a76ae27065b | 55 | int m_out; |
| Clemo | 0:0a76ae27065b | 56 | int m_remainder; |
| Clemo | 0:0a76ae27065b | 57 | int m_limit; |
| Clemo | 0:0a76ae27065b | 58 | int m_tau; |
| Clemo | 0:0a76ae27065b | 59 | }; |
| Clemo | 0:0a76ae27065b | 60 | |
| Clemo | 0:0a76ae27065b | 61 | |
| Clemo | 0:0a76ae27065b | 62 | #endif // __FILTERS_H__ |