Satoshi Togawa / DebouncedEdgeIn

Debaunced Input like InterruptIn.

Dependents:   LcdClock idd_hw2_martincowell_bicyclehid IDD_FALL15_HW2_JMARQUIS_Keypadentry

DebouncedEdgeIn.h@0:471239ea932b, 2014-02-22 (annotated)

Committer:
togayan
Date:
Sat Feb 22 23:55:10 2014 +0000
Revision:
0:471239ea932b
1st release.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
togayan 0:471239ea932b 1 #ifndef DEBAUNCED_EDGE_IN_H
togayan 0:471239ea932b 2 #define DEBAUNCED_EDGE_IN_H
togayan 0:471239ea932b 3
togayan 0:471239ea932b 4 #include "mbed.h"
togayan 0:471239ea932b 5 #include "FunctionPointer.h"
togayan 0:471239ea932b 6
togayan 0:471239ea932b 7 class DebouncedEdgeIn
togayan 0:471239ea932b 8 {
togayan 0:471239ea932b 9 public:
togayan 0:471239ea932b 10 DebouncedEdgeIn(PinName in);
togayan 0:471239ea932b 11 virtual ~DebouncedEdgeIn();
togayan 0:471239ea932b 12
togayan 0:471239ea932b 13 int read (void);
togayan 0:471239ea932b 14 operator int();
togayan 0:471239ea932b 15
togayan 0:471239ea932b 16 /** Attach a function to call when a rising edge occurs on the input
togayan 0:471239ea932b 17 *
togayan 0:471239ea932b 18 * @param fptr A pointer to a void function, or 0 to set as none
togayan 0:471239ea932b 19 */
togayan 0:471239ea932b 20 void rise(void (*fptr)(void));
togayan 0:471239ea932b 21
togayan 0:471239ea932b 22 /** Attach a member function to call when a rising edge occurs on the input
togayan 0:471239ea932b 23 *
togayan 0:471239ea932b 24 * @param tptr pointer to the object to call the member function on
togayan 0:471239ea932b 25 * @param mptr pointer to the member function to be called
togayan 0:471239ea932b 26 */
togayan 0:471239ea932b 27 template<typename T>
togayan 0:471239ea932b 28 void rise(T* tptr, void (T::*mptr)(void)) {
togayan 0:471239ea932b 29 _rise.attach(tptr, mptr);
togayan 0:471239ea932b 30 }
togayan 0:471239ea932b 31
togayan 0:471239ea932b 32 /** Attach a function to call when a falling edge occurs on the input
togayan 0:471239ea932b 33 *
togayan 0:471239ea932b 34 * @param fptr A pointer to a void function, or 0 to set as none
togayan 0:471239ea932b 35 */
togayan 0:471239ea932b 36 void fall(void (*fptr)(void));
togayan 0:471239ea932b 37
togayan 0:471239ea932b 38 /** Attach a member function to call when a falling edge occurs on the input
togayan 0:471239ea932b 39 *
togayan 0:471239ea932b 40 * @param tptr pointer to the object to call the member function on
togayan 0:471239ea932b 41 * @param mptr pointer to the member function to be called
togayan 0:471239ea932b 42 */
togayan 0:471239ea932b 43 template<typename T>
togayan 0:471239ea932b 44 void fall(T* tptr, void (T::*mptr)(void)) {
togayan 0:471239ea932b 45 _fall.attach(tptr, mptr);
togayan 0:471239ea932b 46 }
togayan 0:471239ea932b 47
togayan 0:471239ea932b 48 /** Set the input pin mode
togayan 0:471239ea932b 49 *
togayan 0:471239ea932b 50 * @param mode PullUp, PullDown, PullNone
togayan 0:471239ea932b 51 */
togayan 0:471239ea932b 52 void mode(PinMode pull);
togayan 0:471239ea932b 53
togayan 0:471239ea932b 54 private :
togayan 0:471239ea932b 55 // objects
togayan 0:471239ea932b 56 DigitalIn _in;
togayan 0:471239ea932b 57 Ticker _ticker;
togayan 0:471239ea932b 58 FunctionPointer _rise;
togayan 0:471239ea932b 59 FunctionPointer _fall;
togayan 0:471239ea932b 60
togayan 0:471239ea932b 61 // function to take a sample, and update flags
togayan 0:471239ea932b 62 void _sample(void);
togayan 0:471239ea932b 63
togayan 0:471239ea932b 64 // counters and flags
togayan 0:471239ea932b 65 int _samples;
togayan 0:471239ea932b 66 int _output;
togayan 0:471239ea932b 67 int _output_last;
togayan 0:471239ea932b 68 };
togayan 0:471239ea932b 69
togayan 0:471239ea932b 70 #endif // DEBAUNCED_EDGE_IN_H