Me4Button.h

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/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef Me4Button_H
#define Me4Button_H
 
/* Includes ------------------------------------------------------------------*/
#include <stdint.h>
#include <stdbool.h>
#include <Arduino.h>
#include "MeConfig.h"
 
#ifdef ME_PORT_DEFINED
#include "MePort.h"
#endif //  ME_PORT_DEFINED
 
/* Exported macro ------------------------------------------------------------*/
#define KEY_NULL   (0)
#define KEY_1      (1)
#define KEY_2      (2)
#define KEY_3      (3)
#define KEY_4      (4)
 
#define KEY_NULL_VALUE   (962)     // 1023*((5-0.3)/5)
#define KEY_1_VALUE      (0)
#define KEY_2_VALUE      (481)     // 962/2
#define KEY_3_VALUE      (641)     // 962*2/3
#define KEY_4_VALUE      (721)     // 962*3/4
 
#define DEBOUNCED_INTERVAL (8)
// If you want key response faster, you can set DEBOUNCED_INTERVAL to a
// smaller number.
 
#define FALSE  (0)
#define TRUE   (1)
 
#ifndef ME_PORT_DEFINED
class Me4Button
#else // !ME_PORT_DEFINED
class Me4Button : public MePort
#endif // !ME_PORT_DEFINED
{
public:
#ifdef ME_PORT_DEFINED
  Me4Button(void);
  
  Me4Button(uint8_t port);
#else //  ME_PORT_DEFINED
  Me4Button(uint8_t port);
#endif  //  ME_PORT_DEFINED
  void setpin(uint8_t port);
 
  uint8_t pressed(void);
private:
  volatile unsigned long previous_time;
  volatile unsigned long key_debounced_count;
  volatile unsigned long key_match_count;
  volatile unsigned long key_debounced_value;
  volatile int16_t  Pre_Button_Value;
  volatile uint8_t  _KeyPin;
};
#endif // Me4Button_H