menbedButtonHandler.h

00001 #ifndef _MENBEDBUTTONHANDLER_H_
00002 #define _MENBEDBUTTONHANDLER_H_
00003 
00004 #include "mbed.h"
00005 #include "menbedNavigator.h"
00006 #include "menbedButtonHandlerTimespec.h"
00007 
00008 class MenbedButtonHandler {
00009 public:
00010     MenbedButtonHandler(PinName selectPin, PinName downPin, PinName upPin, PinName cancelPin,
00011         MenbedButtonHandlerTimespec *timespec, MenbedNavigator *navigator);
00012     MenbedButtonHandler(PinName selectPin, PinName downPin, PinName upPin,
00013         MenbedButtonHandlerTimespec *timespec, MenbedNavigator *navigator);
00014     MenbedButtonHandler(PinName selectPin, PinName downPin,
00015         MenbedButtonHandlerTimespec *timespec, MenbedNavigator *navigator);
00016                   
00017 protected:
00018     DigitalIn *select, *down, *up, *cancel;
00019     MenbedButtonHandlerTimespec *timespec;
00020     MenbedNavigator *navigator;
00021     
00022     Ticker ticker;
00023     uint32_t tickerPeriod_us;
00024     uint32_t currentTime_us;
00025     
00026     int numButtons;
00027     
00028     uint32_t buttonPushedTime_us[4]; // Absolute time button first depressed
00029     bool buttonDebounced[4]; // Keep track of which buttons are debounced
00030     uint32_t buttonLastTypematicTime_us[4]; // Abs. time of last virtual push
00031     bool buttonAlreadyDepressed[4]; // Keep track of state b/t calls to tick()
00032     
00033     void init (void);
00034     void tick (void);
00035     bool isButtonDepressed (MenbedButtonEvent::ButtonName);
00036 };
00037 
00038 #endif /* _MENBEDBUTTONHANDLER_H_ */