File content as of revision 18:e6ed582f7022:

#define BUTTON1_HOLD_EVENT         0x0001
#define BUTTON1_PRESSED_EVENT       0x0002
#define BUTTON2_HOLD_EVENT         0x0004
#define BUTTON2_PRESSED_EVENT       0x0008
#define BUTTON3_HOLD_EVENT         0x0010
#define BUTTON3_PRESSED_EVENT       0x0020
#define BUTTON4_HOLD_EVENT         0x0040
#define BUTTON4_PRESSED_EVENT       0x0080
#define MENU_HOLD_EVENT          BUTTON4_HOLD_EVENT
#define MENU_PRESSED_EVENT       BUTTON4_PRESSED_EVENT
#define ENTER_HOLD_EVENT         BUTTON3_HOLD_EVENT
#define ENTER_PRESSED_EVENT      BUTTON3_PRESSED_EVENT
#define LEFT_HOLD_EVENT          BUTTON2_HOLD_EVENT
#define LEFT_PRESSED_EVENT       BUTTON2_PRESSED_EVENT
#define RIGHT_HOLD_EVENT         BUTTON1_HOLD_EVENT
#define RIGHT_PRESSED_EVENT      BUTTON1_PRESSED_EVENT
#define LCD_DISPLAY_HOLD_EVENT      0x0001
#define LCD_DISPLAY_RELEASE_EVENT   0x0002

#define COMMAND_INIT  0 // all the devices return to the point 0 and return the current possition or current weight
#define COMMAND_PLUS  1 // for the devices to plus weight return the weight
#define COMMAND_MINUS 2 // for the devices to minus weight return the weight
#define COMMAND_MOVE_ABSOLUTE 3 // for the devices to move to the absolute position return the current absolute position
#define COMMAND_MOVE_RELATIVE 4 // for the devices to move relative distance return the current absolute position
#define COMMAND_REPORT_WEIGHT 5 // for the devices to report the current weight 
#define COMMAND_REPORT_POSITION 6 // for the devices to report the current absolute position
#define COMMAND_CLEAN 7 // for the devices to clean the cups return done or failed
#define COMMAND_TARE 8  // for the devices to tare the scale return done or failed
#define COMMAND_SHAKE_CUP 9 // for the device to shake the cups return done or failed
#define COMMAND_POUR_TEA 10 // for the device to pour the tea return done or failed
#define COMMAND_FINISH 11   // for everything finished return done or failed
#define COMMAND_RESET 12    // for the devices return to the point 0 and clean themselvies


#define WEIGHT_DIFFERENCE   200   // 10g ADC value minimum difference
#define CALIBRATION_WEIGHT  2000    // calibration weight
#define MAXIMUM_CALIBRATION_WEIGHT  5000 
#define MINIMUM_CALIBRATION_WEIGHT  100 

enum Device_Type_d
{
    CupTrack=0,
    JamTrack=1,
    TeaTrack=2,
    Tea=3,
    Jam=4,
    Shaker=5
};

struct ScaleCalibrationData {
  unsigned int calibrationWeight;  // the weight (g) used for calibration for example 1000g or 10g. The maximum value is 3000. 
  long offsetValue;       // the value for scale offset
  float scaleValue;       // the ADC increment for 1g  
  uint8_t checksum;  
};