SkalenGenerator

Arduino library for complete MIDI scale generation by Michael Ruck.

Complete Scale Reference

ID	Constant	Intervals	Example Notes (C)	Typical Chords
0	IONIAN	W-W-H-W-W-W-H	C D E F G A B	Cmaj7, G6
1	AEOLIAN	W-H-W-W-H-W-W	A B C D E F G	Am7, Dm9
2	DORIAN	W-H-W-W-W-H-W	D E F G A B C	Dm7, Gm11
3	PHRYGIAN	H-W-W-W-H-W-W	E F G A B C D	E7♭9, Fm
4	LYDIAN	W-W-W-H-W-W-H	F G A B C D E	Fmaj7#11
5	MIXOLYDIAN	W-W-H-W-W-H-W	G A B C D E F	G7, C9
6	LOCRIAN	H-W-W-H-W-W-W	B C D E F G A	Bm7♭5
7	MELODIC_MINOR	W-H-W-W-W-W-H	A B C D E F# G#	Am6, B7alt
8	HARMONIC_MINOR	W-H-W-W-H-WH-H	A B C D E F G#	AmMaj7, E7
9	BLUES	3-2-1-1-3-2	C Eb F F# G Bb	C7, F7
10	BEBOP_DOMINANT	W-W-H-W-W-H-H-H	C D E F G A Bb B	C7, G9
11	BEBOP_MAJOR	W-W-H-W-H-H-W-H	C D E F G Ab Bb B	C6, Fmaj7
12	PENTATONIC	W-W-3-W-3	C D E G A	Csus2, Am
13	WHOLE_TONE	W-W-W-W-W-W	C D E F# G# A#	C7#5, D7♭5
14	ALTERED	H-W-H-W-W-W-W	C Db Eb E Gb Ab Bb	C7alt, G#7#9
15	DIMINISHED	W-H-W-H-W-H-W-H	C D Eb F Gb Ab A B	C°7, D7♭9
16	HALF_DIMINISHED	H-W-H-W-H-3-H	C Db Eb F Gb Ab Bb	Cm7♭5, F#7alt

Full API

Scale Generation

/**
 * @param notes     Output buffer (uint8_t[128])
 * @param root      MIDI root note (0-127)
 * @param type      Scale type (0-16)
 * @return          Position of root note in array
 */
uint8_t generateScale(uint8_t* notes, uint8_t root, uint8_t type);

Metadata Access

// Get all available scales
static const ScaleInfo* getAllScales(uint8_t* count);

struct ScaleInfo {
    uint8_t id;
    const char* name;
    const char* intervals;
    const char* chords;
};

LVGL Utilities

// Create pre-configured dropdown
static lv_obj_t* createLVGLDropdown(lv_obj_t* parent);

Example Output

=== C Ionian ===
Notes (72): 
 0(12)  2  4  5  7  9 11 
12(24) 14 16 17 19 21 23 
... 
(60)62 64 65 67 69 71 
72(84) ...

License

MIT © Michael Ruck
Source: github.com/michaelruck/SkalenGenerator