some are defined but others are missing, like record, start stop , arrows etc
#define KNOB_LEVEL 0x00
#define KNOB_PITCH 0x02
#define KNOB_RES 0x03
#define KNOB_EG 0x04
#define KNOB_ATTACK 0x06
#define KNOB_DECAY 0x08
#define KNOB_MOD_DEPTH 0x05
#define KNOB_MOD_SPEED 0x0a
#define ENCODER_OSC 0x01
#define ENCODER_CUTOFF 0x02
#define ENCODER_MOD 0x03
#define BUTTON_MENU 0x09
#define BUTTON_SHIFT 0x0a
#define BUTTON_AMP_EG 0x20
#define BUTTON_LPF 0x12
#define BUTTON_HPF 0x14
#define BUTTON_BPF 0x16
#define BUTTON_EXIT 0x0d
some are defined but others are missing, like record, start stop , arrows etc