Merge pull request #1112 from newsboytko/newsboytko/midi-keycodes

Flesh out MIDI support

build_keyboard.mk

@@ -23,9 +23,9 @@ ifdef master
 	MASTER = $(master)
 endif
 
-ifeq ($(MASTER),right)	
+ifeq ($(MASTER),right)
 	OPT_DEFS += -DMASTER_IS_ON_RIGHT
-else 
+else
 	ifneq ($(MASTER),left)
 $(error MASTER does not have a valid value(left/right))
 	endif
@@ -38,7 +38,7 @@ KEYBOARD_C := $(KEYBOARD_PATH)/$(KEYBOARD).c
 
 ifneq ("$(wildcard $(KEYBOARD_C))","")
     include $(KEYBOARD_PATH)/rules.mk
-else 
+else
     $(error "$(KEYBOARD_C)" does not exist)
 endif
 
@@ -49,7 +49,7 @@ ifneq ($(SUBPROJECT),)
     ifneq ("$(wildcard $(SUBPROJECT_C))","")
         OPT_DEFS += -DSUBPROJECT_$(SUBPROJECT)
         include $(SUBPROJECT_PATH)/rules.mk
-    else 
+    else
         $(error "$(SUBPROJECT_PATH)/$(SUBPROJECT).c" does not exist)
     endif
 endif
@@ -83,7 +83,7 @@ ifneq ($(SUBPROJECT),)
 	endif
 endif
 
-# Save the defines and includes here, so we don't include any keymap specific ones 
+# Save the defines and includes here, so we don't include any keymap specific ones
 PROJECT_DEFS := $(OPT_DEFS)
 PROJECT_INC := $(VPATH) $(EXTRAINCDIRS) $(SUBPROJECT_PATH) $(KEYBOARD_PATH)
 PROJECT_CONFIG := $(CONFIG_H)
@@ -139,11 +139,27 @@ ifeq ($(strip $(API_SYSEX_ENABLE)), yes)
     MIDI_ENABLE=yes
 endif
 
+MUSIC_ENABLE := 0
+
+ifeq ($(strip $(AUDIO_ENABLE)), yes)
+    OPT_DEFS += -DAUDIO_ENABLE
+    MUSIC_ENABLE := 1
+	SRC += $(QUANTUM_DIR)/process_keycode/process_audio.c
+	SRC += $(QUANTUM_DIR)/audio/audio.c
+	SRC += $(QUANTUM_DIR)/audio/voices.c
+	SRC += $(QUANTUM_DIR)/audio/luts.c
+endif
+
 ifeq ($(strip $(MIDI_ENABLE)), yes)
     OPT_DEFS += -DMIDI_ENABLE
+	MUSIC_ENABLE := 1
 	SRC += $(QUANTUM_DIR)/process_keycode/process_midi.c
 endif
 
+ifeq ($(MUSIC_ENABLE), 1)
+	SRC += $(QUANTUM_DIR)/process_keycode/process_music.c
+endif
+
 ifeq ($(strip $(COMBO_ENABLE)), yes)
     OPT_DEFS += -DCOMBO_ENABLE
 	SRC += $(QUANTUM_DIR)/process_keycode/process_combo.c
@@ -153,14 +169,6 @@ ifeq ($(strip $(VIRTSER_ENABLE)), yes)
     OPT_DEFS += -DVIRTSER_ENABLE
 endif
 
-ifeq ($(strip $(AUDIO_ENABLE)), yes)
-    OPT_DEFS += -DAUDIO_ENABLE
-	SRC += $(QUANTUM_DIR)/process_keycode/process_music.c
-	SRC += $(QUANTUM_DIR)/audio/audio.c
-	SRC += $(QUANTUM_DIR)/audio/voices.c
-	SRC += $(QUANTUM_DIR)/audio/luts.c
-endif
-
 ifeq ($(strip $(FAUXCLICKY_ENABLE)), yes)
     OPT_DEFS += -DFAUXCLICKY_ENABLE
 	SRC += $(QUANTUM_DIR)/fauxclicky.c
@@ -250,7 +258,7 @@ endif
 
 OUTPUTS := $(KEYMAP_OUTPUT) $(KEYBOARD_OUTPUT)
 $(KEYMAP_OUTPUT)_SRC := $(SRC)
-$(KEYMAP_OUTPUT)_DEFS := $(OPT_DEFS) -DQMK_KEYBOARD=\"$(KEYBOARD)\" -DQMK_KEYMAP=\"$(KEYMAP)\" 
+$(KEYMAP_OUTPUT)_DEFS := $(OPT_DEFS) -DQMK_KEYBOARD=\"$(KEYBOARD)\" -DQMK_KEYMAP=\"$(KEYMAP)\"
 $(KEYMAP_OUTPUT)_INC :=  $(VPATH) $(EXTRAINCDIRS)
 $(KEYMAP_OUTPUT)_CONFIG := $(CONFIG_H)
 $(KEYBOARD_OUTPUT)_SRC := $(CHIBISRC)

keyboards/planck/keymaps/dbroqua/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/default/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/experimental/config.h

@@ -14,4 +14,27 @@
 #define RGBLIGHT_HUE_STEP 10
 #define RGBLIGHT_SAT_STEP 17
 
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
 #endif

keyboards/planck/keymaps/impossible/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/jeebak/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/jhenahan/config.h

@@ -6,4 +6,27 @@
 #define FORCE_NKRO
 #define WORKMAN_SOUND COLEMAK_SOUND
 
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
 #endif

keyboards/planck/keymaps/premek/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/sgoodwin/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/smt/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/thermal_printer/config.h

@@ -20,4 +20,27 @@
             sei(); \
         } while(0)
 
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
  #endif

keyboards/planck/keymaps/unicode/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/planck/keymaps/xyverz/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/preonic/keymaps/CMD-Preonic/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/preonic/keymaps/default/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/preonic/keymaps/smt/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/satan/keymaps/midi/Makefile

@@ -0,0 +1,21 @@
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in 
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
+NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = yes       # Enable keyboard backlight functionality
+MIDI_ENABLE = yes            # MIDI support (+2400 to 4200, depending on config)
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif

keyboards/satan/keymaps/midi/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

keyboards/satan/keymaps/midi/keymap.c

@@ -0,0 +1,77 @@
+#include "satan.h"
+
+// Each layer gets a name for readability, which is then used in the keymap matrix below.
+// The underscores don't mean anything - you can have a layer called STUFF or any other name.
+// Layer names don't all need to be of the same length, obviously, and you can also skip them
+// entirely and just use numbers.
+#define _BL 0
+#define _ML 1
+
+// readability
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  /* Keymap _BL: (Base Layer) Default Layer
+   * ,-----------------------------------------------------------.
+   * |Esc | 1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backsp |
+   * |-----------------------------------------------------------|
+   * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \  |
+   * |-----------------------------------------------------------|
+   * |CAPS   |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return |
+   * |-----------------------------------------------------------|
+   * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift     |
+   * |-----------------------------------------------------------|
+   * |Ctrl|Gui |Alt |      Space            |Alt |Gui |Midi|Ctrl |
+   * `-----------------------------------------------------------'
+   */
+[_BL] = KEYMAP_ANSI(
+  KC_ESC,  KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS, KC_EQL, KC_BSPC, \
+  KC_TAB,  KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_LBRC, KC_RBRC,KC_BSLS, \
+  KC_CAPS, KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN,KC_QUOT,         KC_ENT,  \
+  KC_LSFT,         KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, KC_SLSH,         KC_RSFT, \
+  KC_LCTL, KC_LGUI,KC_LALT,                KC_SPC,                                 KC_RALT,KC_RGUI, TG(_ML), KC_RCTL),
+
+#if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
+/* Keymap _ML: MIDI Layer (Advanced)
+   * ,------------------------------------------------------------------------.
+   * | Exit |    |    |    |    |    |    |    |    |    |    |    |    |     |
+   * |------------------------------------------------------------------------|
+   * |  Ch+ |    | C# | D# |    | F# | G# | A# |    | C# | D# |    |    |     |
+   * |------------------------------------------------------------------------|
+   * |  Mod  | C  | D  | E  | F  | G  | A  | B  | C  | D  | E  | F  |         |
+   * |------------------------------------------------------------------------|
+   * | Sustain |Oct-|Oct+|Mod-|Mod+|    |    |    |Tns-|Tns+|Tns0|   Sustain  |
+   * |------------------------------------------------------------------------|
+   * |     |     |     |         All notes off        |     |     |     |     |
+   * `------------------------------------------------------------------------'
+   */
+[_ML] = KEYMAP_ANSI(
+  TG(_ML), MI_VEL_1, MI_VEL_2, MI_VEL_3, MI_VEL_4, MI_VEL_5, MI_VEL_6, MI_VEL_7, MI_VEL_8, MI_VEL_9, MI_VEL_10, XXXXXXX, XXXXXXX, XXXXXXX, \
+  MI_CHU,  XXXXXXX, MI_Cs,   MI_Ds,   XXXXXXX, MI_Fs,   MI_Gs,   MI_As,   XXXXXXX, MI_Cs_1, MI_Ds_1, XXXXXXX, XXXXXXX, XXXXXXX, \
+  MI_MOD,  MI_C,    MI_D,    MI_E,    MI_F,    MI_G,    MI_A,    MI_B,    MI_C_1,  MI_D_1,  MI_E_1,  MI_F_1,           _______, \
+  MI_SUS,  MI_OCTD, MI_OCTU, MI_MODSD, MI_MODSU, XXXXXXX, XXXXXXX, XXXXXXX, MI_TRNSD, MI_TRNSU, MI_TRNS_0,             MI_SUS, \
+  _______, _______, _______,                          MI_ALLOFF,                            _______, _______, _______, _______),
+#elif defined(MIDI_ENABLE) && defined(MIDI_BASIC)
+/* Keymap _ML: MIDI Layer (Advanced)
+   * ,------------------------------------------------------------------------.
+   * | Exit |    |    |    |    |    |    |    |    |    |    |    |    |     |
+   * |------------------------------------------------------------------------|
+   * |      |    |    |    |    |    |    |    |    |    |    |    |    |     |
+   * |------------------------------------------------------------------------|
+   * |       |    |    |    |    |    |    |    |    |    |    |    |         |
+   * |------------------------------------------------------------------------|
+   * |         |MuOn|MuOf|MiOn|MiOf|    |    |    |    |    |    |            |
+   * |------------------------------------------------------------------------|
+   * |     |     |     |                              |     |     |     |     |
+   * `------------------------------------------------------------------------'
+   */
+
+[_ML] = KEYMAP_ANSI(
+  TG(_ML), _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, \
+  _______, MU_ON,   MU_OFF,  MI_ON,   MI_OFF,  _______, _______, _______, _______, _______, _______,                   _______, \
+  _______, _______, _______,                          _______,                              _______, _______, _______, _______),
+#endif
+};

keyboards/satan/keymaps/midi/readme.md

@@ -0,0 +1 @@
+# Satan GH60 layout demonstrating MIDI key mapping

keyboards/subatomic/keymaps/default/config.h

@@ -0,0 +1,29 @@
+#ifndef CONFIG_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#endif

quantum/audio/audio.c

@@ -89,15 +89,15 @@ void audio_init()
     }
     audio_config.raw = eeconfig_read_audio();
 
-	// Set port PC6 (OC3A and /OC4A) as output
+    // Set port PC6 (OC3A and /OC4A) as output
     DDRC |= _BV(PORTC6);
 
     DISABLE_AUDIO_COUNTER_3_ISR;
 
-	// TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
-	// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
-	// Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
-	// Clock Select (CS3n) = 0b010 = Clock / 8
+    // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
+    // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+    // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
+    // Clock Select (CS3n) = 0b010 = Clock / 8
     TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
     TCCR3B = (1 << WGM33)  | (1 << WGM32)  | (0 << CS32)  | (1 << CS31) | (0 << CS30);
 
@@ -106,6 +106,8 @@ void audio_init()
 
 void stop_all_notes()
 {
+    dprintf("audio stop all notes");
+
     if (!audio_initialized) {
         audio_init();
     }
@@ -128,6 +130,8 @@ void stop_all_notes()
 
 void stop_note(float freq)
 {
+    dprintf("audio stop note freq=%d", (int)freq);
+
     if (playing_note) {
         if (!audio_initialized) {
             audio_init();
@@ -183,159 +187,161 @@ float vibrato(float average_freq) {
 
 ISR(TIMER3_COMPA_vect)
 {
-	float freq;
-
-	if (playing_note) {
-		if (voices > 0) {
-			if (polyphony_rate > 0) {
-				if (voices > 1) {
-					voice_place %= voices;
-					if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
-						voice_place = (voice_place + 1) % voices;
-						place = 0.0;
-					}
-				}
-
-				#ifdef VIBRATO_ENABLE
-					if (vibrato_strength > 0) {
-						freq = vibrato(frequencies[voice_place]);
-					} else {
-						freq = frequencies[voice_place];
-					}
-				#else
-					freq = frequencies[voice_place];
-				#endif
-			} else {
-				if (glissando) {
-					if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
-						frequency = frequency * pow(2, 440/frequency/12/2);
-					} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
-						frequency = frequency * pow(2, -440/frequency/12/2);
-					} else {
-						frequency = frequencies[voices - 1];
-					}
-				} else {
-					frequency = frequencies[voices - 1];
-				}				
-
-				#ifdef VIBRATO_ENABLE
-					if (vibrato_strength > 0) {
-						freq = vibrato(frequency);
-					} else {
-						freq = frequency;
-					}
-				#else
-					freq = frequency;
-				#endif
-			}
-
-			if (envelope_index < 65535) {
-				envelope_index++;
-			}
-
-			freq = voice_envelope(freq);
-
-			if (freq < 30.517578125) {
-				freq = 30.52;
-			}
-
-			TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
-			TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
-		}
-	}
-
-	if (playing_notes) {
-		if (note_frequency > 0) {
-			#ifdef VIBRATO_ENABLE
-				if (vibrato_strength > 0) {
-					freq = vibrato(note_frequency);
-				} else {
-					freq = note_frequency;
-				}
-			#else
-					freq = note_frequency;
-			#endif
-
-			if (envelope_index < 65535) {
-				envelope_index++;
-			}
-			freq = voice_envelope(freq);
-
-			TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
-			TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
-		} else {
-			TIMER_3_PERIOD = 0;
-			TIMER_3_DUTY_CYCLE = 0;
-		}
-
-		note_position++;
-		bool end_of_note = false;
-		if (TIMER_3_PERIOD > 0) {
-			end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF));
-		} else {
-			end_of_note = (note_position >= (note_length * 0x7FF));
-		}
-
-		if (end_of_note) {
-			current_note++;
-			if (current_note >= notes_count) {
-				if (notes_repeat) {
-					current_note = 0;
-				} else {
-					DISABLE_AUDIO_COUNTER_3_ISR;
-					DISABLE_AUDIO_COUNTER_3_OUTPUT;
-					playing_notes = false;
-					return;
-				}
-			}
-			if (!note_resting && (notes_rest > 0)) {
-				note_resting = true;
-				note_frequency = 0;
-				note_length = notes_rest;
-				current_note--;
-			} else {
-				note_resting = false;
-				envelope_index = 0;
-				note_frequency = (*notes_pointer)[current_note][0];
-				note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-			}
-
-			note_position = 0;
-		}
-	}
-
-	if (!audio_config.enable) {
-		playing_notes = false;
-		playing_note = false;
-	}
+    float freq;
+
+    if (playing_note) {
+        if (voices > 0) {
+            if (polyphony_rate > 0) {
+                if (voices > 1) {
+                    voice_place %= voices;
+                    if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
+                        voice_place = (voice_place + 1) % voices;
+                        place = 0.0;
+                    }
+                }
+
+                #ifdef VIBRATO_ENABLE
+                    if (vibrato_strength > 0) {
+                        freq = vibrato(frequencies[voice_place]);
+                    } else {
+                        freq = frequencies[voice_place];
+                    }
+                #else
+                    freq = frequencies[voice_place];
+                #endif
+            } else {
+                if (glissando) {
+                    if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
+                        frequency = frequency * pow(2, 440/frequency/12/2);
+                    } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
+                        frequency = frequency * pow(2, -440/frequency/12/2);
+                    } else {
+                        frequency = frequencies[voices - 1];
+                    }
+                } else {
+                    frequency = frequencies[voices - 1];
+                }
+
+                #ifdef VIBRATO_ENABLE
+                    if (vibrato_strength > 0) {
+                        freq = vibrato(frequency);
+                    } else {
+                        freq = frequency;
+                    }
+                #else
+                    freq = frequency;
+                #endif
+            }
+
+            if (envelope_index < 65535) {
+                envelope_index++;
+            }
+
+            freq = voice_envelope(freq);
+
+            if (freq < 30.517578125) {
+                freq = 30.52;
+            }
+
+            TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
+            TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
+        }
+    }
+
+    if (playing_notes) {
+        if (note_frequency > 0) {
+            #ifdef VIBRATO_ENABLE
+                if (vibrato_strength > 0) {
+                    freq = vibrato(note_frequency);
+                } else {
+                    freq = note_frequency;
+                }
+            #else
+                    freq = note_frequency;
+            #endif
+
+            if (envelope_index < 65535) {
+                envelope_index++;
+            }
+            freq = voice_envelope(freq);
+
+            TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
+            TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
+        } else {
+            TIMER_3_PERIOD = 0;
+            TIMER_3_DUTY_CYCLE = 0;
+        }
+
+        note_position++;
+        bool end_of_note = false;
+        if (TIMER_3_PERIOD > 0) {
+            end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF));
+        } else {
+            end_of_note = (note_position >= (note_length * 0x7FF));
+        }
+
+        if (end_of_note) {
+            current_note++;
+            if (current_note >= notes_count) {
+                if (notes_repeat) {
+                    current_note = 0;
+                } else {
+                    DISABLE_AUDIO_COUNTER_3_ISR;
+                    DISABLE_AUDIO_COUNTER_3_OUTPUT;
+                    playing_notes = false;
+                    return;
+                }
+            }
+            if (!note_resting && (notes_rest > 0)) {
+                note_resting = true;
+                note_frequency = 0;
+                note_length = notes_rest;
+                current_note--;
+            } else {
+                note_resting = false;
+                envelope_index = 0;
+                note_frequency = (*notes_pointer)[current_note][0];
+                note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+            }
+
+            note_position = 0;
+        }
+    }
+
+    if (!audio_config.enable) {
+        playing_notes = false;
+        playing_note = false;
+    }
 }
 
 void play_note(float freq, int vol) {
 
+    dprintf("audio play note freq=%d vol=%d", (int)freq, vol);
+
     if (!audio_initialized) {
         audio_init();
     }
 
-	if (audio_config.enable && voices < 8) {
-	    DISABLE_AUDIO_COUNTER_3_ISR;
+    if (audio_config.enable && voices < 8) {
+        DISABLE_AUDIO_COUNTER_3_ISR;
 
-	    // Cancel notes if notes are playing
-	    if (playing_notes)
-	        stop_all_notes();
+        // Cancel notes if notes are playing
+        if (playing_notes)
+            stop_all_notes();
 
-	    playing_note = true;
+        playing_note = true;
 
-	    envelope_index = 0;
+        envelope_index = 0;
 
-	    if (freq > 0) {
-	        frequencies[voices] = freq;
-	        volumes[voices] = vol;
-	        voices++;
-	    }
+        if (freq > 0) {
+            frequencies[voices] = freq;
+            volumes[voices] = vol;
+            voices++;
+        }
 
         ENABLE_AUDIO_COUNTER_3_ISR;
         ENABLE_AUDIO_COUNTER_3_OUTPUT;
-	}
+    }
 
 }
 
@@ -346,37 +352,37 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
         audio_init();
     }
 
-	if (audio_config.enable) {
+    if (audio_config.enable) {
 
-	    DISABLE_AUDIO_COUNTER_3_ISR;
+        DISABLE_AUDIO_COUNTER_3_ISR;
 
-		// Cancel note if a note is playing
-	    if (playing_note)
-	        stop_all_notes();
+        // Cancel note if a note is playing
+        if (playing_note)
+            stop_all_notes();
 
-	    playing_notes = true;
+        playing_notes = true;
 
-	    notes_pointer = np;
-	    notes_count = n_count;
-	    notes_repeat = n_repeat;
-	    notes_rest = n_rest;
+        notes_pointer = np;
+        notes_count = n_count;
+        notes_repeat = n_repeat;
+        notes_rest = n_rest;
 
-	    place = 0;
-	    current_note = 0;
+        place = 0;
+        current_note = 0;
 
         note_frequency = (*notes_pointer)[current_note][0];
         note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-	    note_position = 0;
+        note_position = 0;
 
 
         ENABLE_AUDIO_COUNTER_3_ISR;
         ENABLE_AUDIO_COUNTER_3_OUTPUT;
-	}
+    }
 
 }
 
 bool is_playing_notes(void) {
-	return playing_notes;
+    return playing_notes;
 }
 
 bool is_audio_on(void) {

quantum/process_keycode/process_audio.c

@@ -0,0 +1,62 @@
+#include "audio.h"
+#include "process_audio.h"
+
+static float compute_freq_for_midi_note(uint8_t note)
+{
+    // https://en.wikipedia.org/wiki/MIDI_tuning_standard
+    return pow(2.0, (note - 69) / 12.0) * 440.0f;
+}
+
+bool process_audio(uint16_t keycode, keyrecord_t *record) {
+
+    if (keycode == AU_ON && record->event.pressed) {
+      audio_on();
+      return false;
+    }
+
+    if (keycode == AU_OFF && record->event.pressed) {
+      audio_off();
+      return false;
+    }
+
+    if (keycode == AU_TOG && record->event.pressed) {
+        if (is_audio_on())
+        {
+            audio_off();
+        }
+        else
+        {
+            audio_on();
+        }
+        return false;
+    }
+
+    if (keycode == MUV_IN && record->event.pressed) {
+        voice_iterate();
+        music_scale_user();
+        return false;
+    }
+
+    if (keycode == MUV_DE && record->event.pressed) {
+        voice_deiterate();
+        music_scale_user();
+        return false;
+    }
+
+    return true;
+}
+
+void process_audio_noteon(uint8_t note) {
+    play_note(compute_freq_for_midi_note(note), 0xF);
+}
+
+void process_audio_noteoff(uint8_t note) {
+    stop_note(compute_freq_for_midi_note(note));
+}
+
+void process_audio_all_notes_off(void) {
+    stop_all_notes();
+}
+
+__attribute__ ((weak))
+void audio_on_user() {}

quantum/process_keycode/process_audio.h

@@ -0,0 +1,11 @@
+#ifndef PROCESS_AUDIO_H
+#define PROCESS_AUDIO_H
+
+bool process_audio(uint16_t keycode, keyrecord_t *record);
+void process_audio_noteon(uint8_t note);
+void process_audio_noteoff(uint8_t note);
+void process_audio_all_notes_off(void);
+
+void audio_on_user(void);
+
+#endif

quantum/process_keycode/process_midi.c

@@ -1,68 +1,238 @@
 #include "process_midi.h"
 
-bool midi_activated = false;
-uint8_t midi_starting_note = 0x0C;
-int midi_offset = 7;
-
-bool process_midi(uint16_t keycode, keyrecord_t *record) {
-    if (keycode == MI_ON && record->event.pressed) {
-      midi_activated = true;
-#ifdef AUDIO_ENABLE
-      music_scale_user();
-#endif
-      return false;
-    }
+#ifdef MIDI_ENABLE
+#include "midi.h"
+
+#ifdef MIDI_BASIC
+
+void process_midi_basic_noteon(uint8_t note) 
+{
+    midi_send_noteon(&midi_device, 0, note, 128);
+}
+
+void process_midi_basic_noteoff(uint8_t note)
+{
+    midi_send_noteoff(&midi_device, 0, note, 0);
+}
+
+void process_midi_all_notes_off(void)
+{
+    midi_send_cc(&midi_device, 0, 0x7B, 0);
+}
+
+#endif // MIDI_BASIC
+
+#ifdef MIDI_ADVANCED
+
+#include "timer.h"
+
+static uint8_t tone_status[MIDI_TONE_COUNT];
+
+static uint8_t midi_modulation;
+static int8_t midi_modulation_step;
+static uint16_t midi_modulation_timer;
+
+inline uint8_t compute_velocity(uint8_t setting)
+{
+    return (setting + 1) * (128 / (MIDI_VELOCITY_MAX - MIDI_VELOCITY_MIN + 1));
+}
 
-    if (keycode == MI_OFF && record->event.pressed) {
-      midi_activated = false;
-      midi_send_cc(&midi_device, 0, 0x7B, 0);
-      return false;
+void midi_init(void)
+{
+    midi_config.octave = MI_OCT_2 - MIDI_OCTAVE_MIN;
+    midi_config.transpose = 0;
+    midi_config.velocity = (MIDI_VELOCITY_MAX - MIDI_VELOCITY_MIN);
+    midi_config.channel = 0;
+    midi_config.modulation_interval = 8;
+
+    for (uint8_t i = 0; i < MIDI_TONE_COUNT; i++)
+    {
+        tone_status[i] = MIDI_INVALID_NOTE;
     }
 
-    if (midi_activated) {
-      if (record->event.key.col == (MATRIX_COLS - 1) && record->event.key.row == (MATRIX_ROWS - 1)) {
-          if (record->event.pressed) {
-              midi_starting_note++; // Change key
-              midi_send_cc(&midi_device, 0, 0x7B, 0);
-          }
-          return false;
-      }
-      if (record->event.key.col == (MATRIX_COLS - 2) && record->event.key.row == (MATRIX_ROWS - 1)) {
-          if (record->event.pressed) {
-              midi_starting_note--; // Change key
-              midi_send_cc(&midi_device, 0, 0x7B, 0);
-          }
-          return false;
-      }
-      if (record->event.key.col == (MATRIX_COLS - 3) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
-          midi_offset++; // Change scale
-          midi_send_cc(&midi_device, 0, 0x7B, 0);
-          return false;
-      }
-      if (record->event.key.col == (MATRIX_COLS - 4) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
-          midi_offset--; // Change scale
-          midi_send_cc(&midi_device, 0, 0x7B, 0);
-          return false;
-      }
-      // basic
-      // uint8_t note = (midi_starting_note + SCALE[record->event.key.col + midi_offset])+12*(MATRIX_ROWS - record->event.key.row);
-      // advanced
-      // uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+12*(MATRIX_ROWS - record->event.key.row);
-      // guitar
-      uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+5*(MATRIX_ROWS - record->event.key.row);
-      // violin
-      // uint8_t note = (midi_starting_note + record->event.key.col + midi_offset)+7*(MATRIX_ROWS - record->event.key.row);
-
-      if (record->event.pressed) {
-        // midi_send_noteon(&midi_device, record->event.key.row, midi_starting_note + SCALE[record->event.key.col], 127);
-        midi_send_noteon(&midi_device, 0, note, 127);
-      } else {
-        // midi_send_noteoff(&midi_device, record->event.key.row, midi_starting_note + SCALE[record->event.key.col], 127);
-        midi_send_noteoff(&midi_device, 0, note, 127);
-      }
-
-      if (keycode < 0xFF) // ignores all normal keycodes, but lets RAISE, LOWER, etc through
-        return false;
+    midi_modulation = 0;
+    midi_modulation_step = 0;
+    midi_modulation_timer = 0;
+}
+
+void midi_task(void)
+{
+    if (timer_elapsed(midi_modulation_timer) < midi_config.modulation_interval)
+        return;
+    midi_modulation_timer = timer_read();
+
+    if (midi_modulation_step != 0)
+    {
+        dprintf("midi modulation %d\n", midi_modulation);
+        midi_send_cc(&midi_device, midi_config.channel, 0x1, midi_modulation);
+
+        if (midi_modulation_step < 0 && midi_modulation < -midi_modulation_step) {
+            midi_modulation = 0;
+            midi_modulation_step = 0;
+            return;
+        }
+
+        midi_modulation += midi_modulation_step;
+
+        if (midi_modulation > 127)
+            midi_modulation = 127;
     }
-  return true;
 }
+
+uint8_t midi_compute_note(uint16_t keycode)
+{
+    return 12 * midi_config.octave + (keycode - MIDI_TONE_MIN) + midi_config.transpose;
+}
+
+bool process_midi(uint16_t keycode, keyrecord_t *record)
+{
+    switch (keycode) {
+        case MIDI_TONE_MIN ... MIDI_TONE_MAX:
+        {
+            uint8_t channel = midi_config.channel;
+            uint8_t tone = keycode - MIDI_TONE_MIN;
+            uint8_t velocity = compute_velocity(midi_config.velocity);
+            if (record->event.pressed) {
+                uint8_t note = midi_compute_note(keycode);
+                midi_send_noteon(&midi_device, channel, note, velocity);
+                dprintf("midi noteon channel:%d note:%d velocity:%d\n", channel, note, velocity);
+                tone_status[tone] = note;
+            }
+            else {
+                uint8_t note = tone_status[tone];
+                if (note != MIDI_INVALID_NOTE)
+                {
+                    midi_send_noteoff(&midi_device, channel, note, velocity);
+                    dprintf("midi noteoff channel:%d note:%d velocity:%d\n", channel, note, velocity);
+                }
+                tone_status[tone] = MIDI_INVALID_NOTE;
+            }
+            return false;
+        }
+        case MIDI_OCTAVE_MIN ... MIDI_OCTAVE_MAX:
+            if (record->event.pressed) {
+                midi_config.octave = keycode - MIDI_OCTAVE_MIN;
+                dprintf("midi octave %d\n", midi_config.octave);
+            }
+            return false;
+        case MI_OCTD:
+            if (record->event.pressed && midi_config.octave > 0) {
+                midi_config.octave--;
+                dprintf("midi octave %d\n", midi_config.octave);
+            }
+            return false;
+        case MI_OCTU:
+            if (record->event.pressed && midi_config.octave < (MIDI_OCTAVE_MAX - MIDI_OCTAVE_MIN)) {
+                midi_config.octave++;
+                dprintf("midi octave %d\n", midi_config.octave);
+            }
+            return false;
+        case MIDI_TRANSPOSE_MIN ... MIDI_TRANSPOSE_MAX:
+            if (record->event.pressed) {
+                midi_config.transpose = keycode - MI_TRNS_0;
+                dprintf("midi transpose %d\n", midi_config.transpose);
+            }
+            return false;
+        case MI_TRNSD:
+            if (record->event.pressed && midi_config.transpose > (MIDI_TRANSPOSE_MIN - MI_TRNS_0)) {
+                midi_config.transpose--;
+                dprintf("midi transpose %d\n", midi_config.transpose);
+            }
+            return false;
+        case MI_TRNSU:
+            if (record->event.pressed && midi_config.transpose < (MIDI_TRANSPOSE_MAX - MI_TRNS_0)) {
+                const bool positive = midi_config.transpose > 0;
+                midi_config.transpose++;
+                if (positive && midi_config.transpose < 0)
+                    midi_config.transpose--;
+                dprintf("midi transpose %d\n", midi_config.transpose);
+            }
+            return false;
+        case MIDI_VELOCITY_MIN ... MIDI_VELOCITY_MAX:
+            if (record->event.pressed) {
+                midi_config.velocity = keycode - MIDI_VELOCITY_MIN;
+                dprintf("midi velocity %d\n", midi_config.velocity);
+            }
+            return false;
+        case MI_VELD:
+            if (record->event.pressed && midi_config.velocity > 0) {
+                midi_config.velocity--;
+                dprintf("midi velocity %d\n", midi_config.velocity);
+            }
+            return false;
+        case MI_VELU:
+            if (record->event.pressed) {
+                midi_config.velocity++;
+                dprintf("midi velocity %d\n", midi_config.velocity);
+            }
+            return false;
+        case MIDI_CHANNEL_MIN ... MIDI_CHANNEL_MAX:
+            if (record->event.pressed) {
+                midi_config.channel = keycode - MIDI_CHANNEL_MIN;
+                dprintf("midi channel %d\n", midi_config.channel);
+            }
+            return false;
+        case MI_CHD:
+            if (record->event.pressed) {
+                midi_config.channel--;
+                dprintf("midi channel %d\n", midi_config.channel);
+            }
+            return false;
+        case MI_CHU:
+            if (record->event.pressed) {
+                midi_config.channel++;
+                dprintf("midi channel %d\n", midi_config.channel);
+            }
+            return false;
+        case MI_ALLOFF:
+            if (record->event.pressed) {
+                midi_send_cc(&midi_device, midi_config.channel, 0x7B, 0);
+                dprintf("midi all notes off\n");
+            }
+            return false;
+        case MI_SUS:
+            midi_send_cc(&midi_device, midi_config.channel, 0x40, record->event.pressed ? 127 : 0);
+            dprintf("midi sustain %d\n", record->event.pressed);
+            return false;
+        case MI_PORT:
+            midi_send_cc(&midi_device, midi_config.channel, 0x41, record->event.pressed ? 127 : 0);
+            dprintf("midi portamento %d\n", record->event.pressed);
+            return false;
+        case MI_SOST:
+            midi_send_cc(&midi_device, midi_config.channel, 0x42, record->event.pressed ? 127 : 0);
+            dprintf("midi sostenuto %d\n", record->event.pressed);
+            return false;
+        case MI_SOFT:
+            midi_send_cc(&midi_device, midi_config.channel, 0x43, record->event.pressed ? 127 : 0);
+            dprintf("midi soft %d\n", record->event.pressed);
+            return false;
+        case MI_LEG:
+            midi_send_cc(&midi_device, midi_config.channel, 0x43, record->event.pressed ? 127 : 0);
+            dprintf("midi legato %d\n", record->event.pressed);
+            return false;
+        case MI_MOD:
+            midi_modulation_step = record->event.pressed ? 1 : -1;
+            return false;
+        case MI_MODSD:
+            if (record->event.pressed) {
+                midi_config.modulation_interval++;
+                // prevent overflow
+                if (midi_config.modulation_interval == 0)
+                    midi_config.modulation_interval--;
+                dprintf("midi modulation interval %d\n", midi_config.modulation_interval);
+            }
+            return false;
+        case MI_MODSU:
+            if (record->event.pressed && midi_config.modulation_interval > 0) {
+                midi_config.modulation_interval--;
+                dprintf("midi modulation interval %d\n", midi_config.modulation_interval);
+            }
+            return false;
+    };
+
+    return true;
+}
+
+#endif // MIDI_ADVANCED
+
+#endif // MIDI_ENABLE

quantum/process_keycode/process_midi.h

@@ -3,205 +3,38 @@
 
 #include "quantum.h"
 
-bool process_midi(uint16_t keycode, keyrecord_t *record);
+#ifdef MIDI_ENABLE
+
+#ifdef MIDI_BASIC
+void process_midi_basic_noteon(uint8_t note);
+void process_midi_basic_noteoff(uint8_t note);
+void process_midi_all_notes_off(void);
+#endif
+
+#ifdef MIDI_ADVANCED
+typedef union {
+  uint32_t raw;
+  struct {
+    uint8_t octave              :4;
+    int8_t transpose            :4;
+    uint8_t velocity            :4;
+    uint8_t channel             :4;
+    uint8_t modulation_interval :4;
+  };
+} midi_config_t;
 
-#define MIDI(n) ((n) | 0x6000)
-#define MIDI12 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000, 0x6000
+midi_config_t midi_config;
+
+void midi_init(void);
+void midi_task(void);
+bool process_midi(uint16_t keycode, keyrecord_t *record);
 
-#define CHNL(note, channel) (note + (channel << 8))
+#define MIDI_INVALID_NOTE 0xFF
+#define MIDI_TONE_COUNT (MIDI_TONE_MAX - MIDI_TONE_MIN + 1)
 
-#define SCALE (int8_t []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
-                           0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
-                           0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
-                           0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
-                           0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
+uint8_t midi_compute_note(uint16_t keycode);
+#endif // MIDI_ADVANCED
 
-#define N_CN1  (0x600C + (12 * -1) + 0 )
-#define N_CN1S (0x600C + (12 * -1) + 1 )
-#define N_DN1F (0x600C + (12 * -1) + 1 )
-#define N_DN1  (0x600C + (12 * -1) + 2 )
-#define N_DN1S (0x600C + (12 * -1) + 3 )
-#define N_EN1F (0x600C + (12 * -1) + 3 )
-#define N_EN1  (0x600C + (12 * -1) + 4 )
-#define N_FN1  (0x600C + (12 * -1) + 5 )
-#define N_FN1S (0x600C + (12 * -1) + 6 )
-#define N_GN1F (0x600C + (12 * -1) + 6 )
-#define N_GN1  (0x600C + (12 * -1) + 7 )
-#define N_GN1S (0x600C + (12 * -1) + 8 )
-#define N_AN1F (0x600C + (12 * -1) + 8 )
-#define N_AN1  (0x600C + (12 * -1) + 9 )
-#define N_AN1S (0x600C + (12 * -1) + 10)
-#define N_BN1F (0x600C + (12 * -1) + 10)
-#define N_BN1  (0x600C + (12 * -1) + 11)
-#define N_C0   (0x600C + (12 *  0) + 0 )
-#define N_C0S  (0x600C + (12 *  0) + 1 )
-#define N_D0F  (0x600C + (12 *  0) + 1 )
-#define N_D0   (0x600C + (12 *  0) + 2 )
-#define N_D0S  (0x600C + (12 *  0) + 3 )
-#define N_E0F  (0x600C + (12 *  0) + 3 )
-#define N_E0   (0x600C + (12 *  0) + 4 )
-#define N_F0   (0x600C + (12 *  0) + 5 )
-#define N_F0S  (0x600C + (12 *  0) + 6 )
-#define N_G0F  (0x600C + (12 *  0) + 6 )
-#define N_G0   (0x600C + (12 *  0) + 7 )
-#define N_G0S  (0x600C + (12 *  0) + 8 )
-#define N_A0F  (0x600C + (12 *  0) + 8 )
-#define N_A0   (0x600C + (12 *  0) + 9 )
-#define N_A0S  (0x600C + (12 *  0) + 10)
-#define N_B0F  (0x600C + (12 *  0) + 10)
-#define N_B0   (0x600C + (12 *  0) + 11)
-#define N_C1   (0x600C + (12 *  1) + 0 )
-#define N_C1S  (0x600C + (12 *  1) + 1 )
-#define N_D1F  (0x600C + (12 *  1) + 1 )
-#define N_D1   (0x600C + (12 *  1) + 2 )
-#define N_D1S  (0x600C + (12 *  1) + 3 )
-#define N_E1F  (0x600C + (12 *  1) + 3 )
-#define N_E1   (0x600C + (12 *  1) + 4 )
-#define N_F1   (0x600C + (12 *  1) + 5 )
-#define N_F1S  (0x600C + (12 *  1) + 6 )
-#define N_G1F  (0x600C + (12 *  1) + 6 )
-#define N_G1   (0x600C + (12 *  1) + 7 )
-#define N_G1S  (0x600C + (12 *  1) + 8 )
-#define N_A1F  (0x600C + (12 *  1) + 8 )
-#define N_A1   (0x600C + (12 *  1) + 9 )
-#define N_A1S  (0x600C + (12 *  1) + 10)
-#define N_B1F  (0x600C + (12 *  1) + 10)
-#define N_B1   (0x600C + (12 *  1) + 11)
-#define N_C2   (0x600C + (12 *  2) + 0 )
-#define N_C2S  (0x600C + (12 *  2) + 1 )
-#define N_D2F  (0x600C + (12 *  2) + 1 )
-#define N_D2   (0x600C + (12 *  2) + 2 )
-#define N_D2S  (0x600C + (12 *  2) + 3 )
-#define N_E2F  (0x600C + (12 *  2) + 3 )
-#define N_E2   (0x600C + (12 *  2) + 4 )
-#define N_F2   (0x600C + (12 *  2) + 5 )
-#define N_F2S  (0x600C + (12 *  2) + 6 )
-#define N_G2F  (0x600C + (12 *  2) + 6 )
-#define N_G2   (0x600C + (12 *  2) + 7 )
-#define N_G2S  (0x600C + (12 *  2) + 8 )
-#define N_A2F  (0x600C + (12 *  2) + 8 )
-#define N_A2   (0x600C + (12 *  2) + 9 )
-#define N_A2S  (0x600C + (12 *  2) + 10)
-#define N_B2F  (0x600C + (12 *  2) + 10)
-#define N_B2   (0x600C + (12 *  2) + 11)
-#define N_C3   (0x600C + (12 *  3) + 0 )
-#define N_C3S  (0x600C + (12 *  3) + 1 )
-#define N_D3F  (0x600C + (12 *  3) + 1 )
-#define N_D3   (0x600C + (12 *  3) + 2 )
-#define N_D3S  (0x600C + (12 *  3) + 3 )
-#define N_E3F  (0x600C + (12 *  3) + 3 )
-#define N_E3   (0x600C + (12 *  3) + 4 )
-#define N_F3   (0x600C + (12 *  3) + 5 )
-#define N_F3S  (0x600C + (12 *  3) + 6 )
-#define N_G3F  (0x600C + (12 *  3) + 6 )
-#define N_G3   (0x600C + (12 *  3) + 7 )
-#define N_G3S  (0x600C + (12 *  3) + 8 )
-#define N_A3F  (0x600C + (12 *  3) + 8 )
-#define N_A3   (0x600C + (12 *  3) + 9 )
-#define N_A3S  (0x600C + (12 *  3) + 10)
-#define N_B3F  (0x600C + (12 *  3) + 10)
-#define N_B3   (0x600C + (12 *  3) + 11)
-#define N_C4   (0x600C + (12 *  4) + 0 )
-#define N_C4S  (0x600C + (12 *  4) + 1 )
-#define N_D4F  (0x600C + (12 *  4) + 1 )
-#define N_D4   (0x600C + (12 *  4) + 2 )
-#define N_D4S  (0x600C + (12 *  4) + 3 )
-#define N_E4F  (0x600C + (12 *  4) + 3 )
-#define N_E4   (0x600C + (12 *  4) + 4 )
-#define N_F4   (0x600C + (12 *  4) + 5 )
-#define N_F4S  (0x600C + (12 *  4) + 6 )
-#define N_G4F  (0x600C + (12 *  4) + 6 )
-#define N_G4   (0x600C + (12 *  4) + 7 )
-#define N_G4S  (0x600C + (12 *  4) + 8 )
-#define N_A4F  (0x600C + (12 *  4) + 8 )
-#define N_A4   (0x600C + (12 *  4) + 9 )
-#define N_A4S  (0x600C + (12 *  4) + 10)
-#define N_B4F  (0x600C + (12 *  4) + 10)
-#define N_B4   (0x600C + (12 *  4) + 11)
-#define N_C5   (0x600C + (12 *  5) + 0 )
-#define N_C5S  (0x600C + (12 *  5) + 1 )
-#define N_D5F  (0x600C + (12 *  5) + 1 )
-#define N_D5   (0x600C + (12 *  5) + 2 )
-#define N_D5S  (0x600C + (12 *  5) + 3 )
-#define N_E5F  (0x600C + (12 *  5) + 3 )
-#define N_E5   (0x600C + (12 *  5) + 4 )
-#define N_F5   (0x600C + (12 *  5) + 5 )
-#define N_F5S  (0x600C + (12 *  5) + 6 )
-#define N_G5F  (0x600C + (12 *  5) + 6 )
-#define N_G5   (0x600C + (12 *  5) + 7 )
-#define N_G5S  (0x600C + (12 *  5) + 8 )
-#define N_A5F  (0x600C + (12 *  5) + 8 )
-#define N_A5   (0x600C + (12 *  5) + 9 )
-#define N_A5S  (0x600C + (12 *  5) + 10)
-#define N_B5F  (0x600C + (12 *  5) + 10)
-#define N_B5   (0x600C + (12 *  5) + 11)
-#define N_C6   (0x600C + (12 *  6) + 0 )
-#define N_C6S  (0x600C + (12 *  6) + 1 )
-#define N_D6F  (0x600C + (12 *  6) + 1 )
-#define N_D6   (0x600C + (12 *  6) + 2 )
-#define N_D6S  (0x600C + (12 *  6) + 3 )
-#define N_E6F  (0x600C + (12 *  6) + 3 )
-#define N_E6   (0x600C + (12 *  6) + 4 )
-#define N_F6   (0x600C + (12 *  6) + 5 )
-#define N_F6S  (0x600C + (12 *  6) + 6 )
-#define N_G6F  (0x600C + (12 *  6) + 6 )
-#define N_G6   (0x600C + (12 *  6) + 7 )
-#define N_G6S  (0x600C + (12 *  6) + 8 )
-#define N_A6F  (0x600C + (12 *  6) + 8 )
-#define N_A6   (0x600C + (12 *  6) + 9 )
-#define N_A6S  (0x600C + (12 *  6) + 10)
-#define N_B6F  (0x600C + (12 *  6) + 10)
-#define N_B6   (0x600C + (12 *  6) + 11)
-#define N_C7   (0x600C + (12 *  7) + 0 )
-#define N_C7S  (0x600C + (12 *  7) + 1 )
-#define N_D7F  (0x600C + (12 *  7) + 1 )
-#define N_D7   (0x600C + (12 *  7) + 2 )
-#define N_D7S  (0x600C + (12 *  7) + 3 )
-#define N_E7F  (0x600C + (12 *  7) + 3 )
-#define N_E7   (0x600C + (12 *  7) + 4 )
-#define N_F7   (0x600C + (12 *  7) + 5 )
-#define N_F7S  (0x600C + (12 *  7) + 6 )
-#define N_G7F  (0x600C + (12 *  7) + 6 )
-#define N_G7   (0x600C + (12 *  7) + 7 )
-#define N_G7S  (0x600C + (12 *  7) + 8 )
-#define N_A7F  (0x600C + (12 *  7) + 8 )
-#define N_A7   (0x600C + (12 *  7) + 9 )
-#define N_A7S  (0x600C + (12 *  7) + 10)
-#define N_B7F  (0x600C + (12 *  7) + 10)
-#define N_B7   (0x600C + (12 *  7) + 11)
-#define N_C8   (0x600C + (12 *  8) + 0 )
-#define N_C8S  (0x600C + (12 *  8) + 1 )
-#define N_D8F  (0x600C + (12 *  8) + 1 )
-#define N_D8   (0x600C + (12 *  8) + 2 )
-#define N_D8S  (0x600C + (12 *  8) + 3 )
-#define N_E8F  (0x600C + (12 *  8) + 3 )
-#define N_E8   (0x600C + (12 *  8) + 4 )
-#define N_F8   (0x600C + (12 *  8) + 5 )
-#define N_F8S  (0x600C + (12 *  8) + 6 )
-#define N_G8F  (0x600C + (12 *  8) + 6 )
-#define N_G8   (0x600C + (12 *  8) + 7 )
-#define N_G8S  (0x600C + (12 *  8) + 8 )
-#define N_A8F  (0x600C + (12 *  8) + 8 )
-#define N_A8   (0x600C + (12 *  8) + 9 )
-#define N_A8S  (0x600C + (12 *  8) + 10)
-#define N_B8F  (0x600C + (12 *  8) + 10)
-#define N_B8   (0x600C + (12 *  8) + 11)
-#define N_C8   (0x600C + (12 *  8) + 0 )
-#define N_C8S  (0x600C + (12 *  8) + 1 )
-#define N_D8F  (0x600C + (12 *  8) + 1 )
-#define N_D8   (0x600C + (12 *  8) + 2 )
-#define N_D8S  (0x600C + (12 *  8) + 3 )
-#define N_E8F  (0x600C + (12 *  8) + 3 )
-#define N_E8   (0x600C + (12 *  8) + 4 )
-#define N_F8   (0x600C + (12 *  8) + 5 )
-#define N_F8S  (0x600C + (12 *  8) + 6 )
-#define N_G8F  (0x600C + (12 *  8) + 6 )
-#define N_G8   (0x600C + (12 *  8) + 7 )
-#define N_G8S  (0x600C + (12 *  8) + 8 )
-#define N_A8F  (0x600C + (12 *  8) + 8 )
-#define N_A8   (0x600C + (12 *  8) + 9 )
-#define N_A8S  (0x600C + (12 *  8) + 10)
-#define N_B8F  (0x600C + (12 *  8) + 10)
-#define N_B8   (0x600C + (12 *  8) + 11)
+#endif // MIDI_ENABLE
 
 #endif

quantum/process_keycode/process_music.c

@@ -1,5 +1,14 @@
 #include "process_music.h"
 
+#ifdef AUDIO_ENABLE
+#include "process_audio.h"
+#endif
+#if defined(MIDI_ENABLE) && defined(MIDI_BASIC)
+#include "process_midi.h"
+#endif
+
+#if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
+
 bool music_activated = false;
 uint8_t music_starting_note = 0x0C;
 int music_offset = 7;
@@ -8,36 +17,41 @@ int music_offset = 7;
 static bool music_sequence_recording = false;
 static bool music_sequence_recorded = false;
 static bool music_sequence_playing = false;
-static float music_sequence[16] = {0};
+static uint8_t music_sequence[16] = {0};
 static uint8_t music_sequence_count = 0;
 static uint8_t music_sequence_position = 0;
 
 static uint16_t music_sequence_timer = 0;
 static uint16_t music_sequence_interval = 100;
 
-bool process_music(uint16_t keycode, keyrecord_t *record) {
+static void music_noteon(uint8_t note) {
+    #ifdef AUDIO_ENABLE
+    process_audio_noteon(note);
+    #endif
+    #if defined(MIDI_ENABLE) && defined(MIDI_BASIC)
+    process_midi_basic_noteon(note);
+    #endif
+}
 
-    if (keycode == AU_ON && record->event.pressed) {
-      audio_on();
-      return false;
-    }
+static void music_noteoff(uint8_t note) {
+    #ifdef AUDIO_ENABLE
+    process_audio_noteoff(note);
+    #endif
+    #if defined(MIDI_ENABLE) && defined(MIDI_BASIC)
+    process_midi_basic_noteoff(note);
+    #endif
+}
 
-    if (keycode == AU_OFF && record->event.pressed) {
-      audio_off();
-      return false;
-    }
+void music_all_notes_off(void) {
+    #ifdef AUDIO_ENABLE
+    process_audio_all_notes_off();
+    #endif
+    #if defined(MIDI_ENABLE) && defined(MIDI_BASIC)
+    process_midi_all_notes_off();
+    #endif
+}
 
-    if (keycode == AU_TOG && record->event.pressed) {
-        if (is_audio_on())
-        {
-            audio_off();
-        }
-        else
-        {
-            audio_on();
-        }
-      return false;
-    }
+bool process_music(uint16_t keycode, keyrecord_t *record) {
 
     if (keycode == MU_ON && record->event.pressed) {
         music_on();
@@ -61,22 +75,10 @@ bool process_music(uint16_t keycode, keyrecord_t *record) {
         return false;
     }
 
-    if (keycode == MUV_IN && record->event.pressed) {
-        voice_iterate();
-        music_scale_user();
-        return false;
-    }
-
-    if (keycode == MUV_DE && record->event.pressed) {
-        voice_deiterate();
-        music_scale_user();
-        return false;
-    }
-
     if (music_activated) {
 
       if (keycode == KC_LCTL && record->event.pressed) { // Start recording
-        stop_all_notes();
+        music_all_notes_off();
         music_sequence_recording = true;
         music_sequence_recorded = false;
         music_sequence_playing = false;
@@ -85,7 +87,7 @@ bool process_music(uint16_t keycode, keyrecord_t *record) {
       }
 
       if (keycode == KC_LALT && record->event.pressed) { // Stop recording/playing
-        stop_all_notes();
+        music_all_notes_off();
         if (music_sequence_recording) { // was recording
           music_sequence_recorded = true;
         }
@@ -95,7 +97,7 @@ bool process_music(uint16_t keycode, keyrecord_t *record) {
       }
 
       if (keycode == KC_LGUI && record->event.pressed && music_sequence_recorded) { // Start playing
-        stop_all_notes();
+        music_all_notes_off();
         music_sequence_recording = false;
         music_sequence_playing = true;
         music_sequence_position = 0;
@@ -114,32 +116,34 @@ bool process_music(uint16_t keycode, keyrecord_t *record) {
             music_sequence_interval+=10;
         return false;
       }
+
       #define MUSIC_MODE_GUITAR
 
       #ifdef MUSIC_MODE_CHROMATIC
-      float freq = ((float)220.0)*pow(2.0, -5.0)*pow(2.0,(music_starting_note + record->event.key.col + music_offset)/12.0+(MATRIX_ROWS - record->event.key.row));
+      uint8_t note = (music_starting_note + record->event.key.col + music_offset - 3)+12*(MATRIX_ROWS - record->event.key.row);
       #elif defined(MUSIC_MODE_GUITAR)
-      float freq = ((float)220.0)*pow(2.0, -5.0)*pow(2.0,(music_starting_note + record->event.key.col + music_offset)/12.0+(float)(MATRIX_ROWS - record->event.key.row + 7)*5.0/12);
+      uint8_t note = (music_starting_note + record->event.key.col + music_offset + 32)+5*(MATRIX_ROWS - record->event.key.row);
       #elif defined(MUSIC_MODE_VIOLIN)
-      float freq = ((float)220.0)*pow(2.0, -5.0)*pow(2.0,(music_starting_note + record->event.key.col + music_offset)/12.0+(float)(MATRIX_ROWS - record->event.key.row + 5)*7.0/12);
+      uint8_t note = (music_starting_note + record->event.key.col + music_offset + 32)+7*(MATRIX_ROWS - record->event.key.row);
       #else
-      float freq = ((float)220.0)*pow(2.0, -5.0)*pow(2.0,(music_starting_note + SCALE[record->event.key.col + music_offset])/12.0+(MATRIX_ROWS - record->event.key.row));
+      uint8_t note = (music_starting_note + SCALE[record->event.key.col + music_offset] - 3)+12*(MATRIX_ROWS - record->event.key.row);
       #endif
 
       if (record->event.pressed) {
-        play_note(freq, 0xF);
+        music_noteon(note);
         if (music_sequence_recording) {
-          music_sequence[music_sequence_count] = freq;
+          music_sequence[music_sequence_count] = note;
           music_sequence_count++;
         }
       } else {
-        stop_note(freq);
+        music_noteoff(note);
       }
 
       if (keycode < 0xFF) // ignores all normal keycodes, but lets RAISE, LOWER, etc through
         return false;
     }
-  return true;
+
+    return true;
 }
 
 bool is_music_on(void) {
@@ -161,26 +165,26 @@ void music_on(void) {
 
 void music_off(void) {
     music_activated = 0;
-    stop_all_notes();
+    music_all_notes_off();
 }
 
-
-__attribute__ ((weak))
-void music_on_user() {}
-
-__attribute__ ((weak))
-void audio_on_user() {}
-
-__attribute__ ((weak))
-void music_scale_user() {}
-
 void matrix_scan_music(void) {
   if (music_sequence_playing) {
     if ((music_sequence_timer == 0) || (timer_elapsed(music_sequence_timer) > music_sequence_interval)) {
       music_sequence_timer = timer_read();
-      stop_note(music_sequence[(music_sequence_position - 1 < 0)?(music_sequence_position - 1 + music_sequence_count):(music_sequence_position - 1)]);
-      play_note(music_sequence[music_sequence_position], 0xF);
+      uint8_t prev_note = music_sequence[(music_sequence_position - 1 < 0)?(music_sequence_position - 1 + music_sequence_count):(music_sequence_position - 1)];
+      uint8_t next_note = music_sequence[music_sequence_position];
+      music_noteoff(prev_note);
+      music_noteon(next_note);
       music_sequence_position = (music_sequence_position + 1) % music_sequence_count;
     }
   }
 }
+
+__attribute__ ((weak))
+void music_on_user() {}
+
+__attribute__ ((weak))
+void music_scale_user() {}
+
+#endif // defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))

quantum/process_keycode/process_music.h

@@ -3,6 +3,8 @@
 
 #include "quantum.h"
 
+#if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
+
 bool process_music(uint16_t keycode, keyrecord_t *record);
 
 bool is_music_on(void);
@@ -10,9 +12,9 @@ void music_toggle(void);
 void music_on(void);
 void music_off(void);
 
-void audio_on_user(void);
 void music_on_user(void);
 void music_scale_user(void);
+void music_all_notes_off(void);
 
 void matrix_scan_music(void);
 
@@ -24,4 +26,6 @@ void matrix_scan_music(void);
                            0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
 #endif
 
+#endif // defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
+
 #endif

quantum/quantum.c

@@ -98,8 +98,8 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
 
 void reset_keyboard(void) {
   clear_keyboard();
-#ifdef AUDIO_ENABLE
-  stop_all_notes();
+#if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_ENABLE_BASIC))
+  music_all_notes_off();
   shutdown_user();
 #endif
   wait_ms(250);
@@ -153,10 +153,13 @@ bool process_record_quantum(keyrecord_t *record) {
 
   if (!(
     process_record_kb(keycode, record) &&
-  #ifdef MIDI_ENABLE
+  #if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
     process_midi(keycode, record) &&
   #endif
   #ifdef AUDIO_ENABLE
+    process_audio(keycode, record) &&
+  #endif
+  #if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
     process_music(keycode, record) &&
   #endif
   #ifdef TAP_DANCE_ENABLE

quantum/quantum.h

@@ -35,11 +35,16 @@ extern uint32_t default_layer_state;
 
 #ifdef MIDI_ENABLE
 	#include <lufa.h>
+#ifdef MIDI_ADVANCED
 	#include "process_midi.h"
 #endif
+#endif // MIDI_ENABLE
 
 #ifdef AUDIO_ENABLE
- 	#include "audio.h"
+ 	#include "process_audio.h"
+#endif
+
+#if defined(AUDIO_ENABLE) || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
 	#include "process_music.h"
 #endif
 

quantum/quantum_keycodes.h

@@ -1,7 +1,16 @@
-
 #ifndef QUANTUM_KEYCODES_H
 #define QUANTUM_KEYCODES_H
 
+#ifndef MIDI_ENABLE_STRICT
+#define MIDI_ENABLE_STRICT 0
+#endif
+
+#if !MIDI_ENABLE_STRICT || (defined(MIDI_ENABLE) && defined(MIDI_ADVANCED))
+#ifndef MIDI_TONE_KEYCODE_OCTAVES
+#define MIDI_TONE_KEYCODE_OCTAVES 3
+#endif
+#endif
+
 enum quantum_keycodes {
     // Ranges used in shortucuts - not to be used directly
     QK_TMK                = 0x0000,
@@ -107,9 +116,230 @@ enum quantum_keycodes {
     MUV_IN,
     MUV_DE,
 
-    // Midi mode on/off
-    MIDI_ON,
-    MIDI_OFF,
+    // Midi
+#if !MIDI_ENABLE_STRICT || (defined(MIDI_ENABLE) && defined(MIDI_BASIC))
+    MI_ON,  // send midi notes when music mode is enabled
+    MI_OFF, // don't send midi notes when music mode is enabled
+#endif
+
+#if !MIDI_ENABLE_STRICT || (defined(MIDI_ENABLE) && defined(MIDI_ADVANCED))
+    MIDI_TONE_MIN,
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 0
+    MI_C = MIDI_TONE_MIN,
+    MI_Cs,
+    MI_Db = MI_Cs,
+    MI_D,
+    MI_Ds,
+    MI_Eb = MI_Ds,
+    MI_E,
+    MI_F,
+    MI_Fs,
+    MI_Gb = MI_Fs,
+    MI_G,
+    MI_Gs,
+    MI_Ab = MI_Gs,
+    MI_A,
+    MI_As,
+    MI_Bb = MI_As,
+    MI_B,
+#endif
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 1
+    MI_C_1,
+    MI_Cs_1,
+    MI_Db_1 = MI_Cs_1,
+    MI_D_1,
+    MI_Ds_1,
+    MI_Eb_1 = MI_Ds_1,
+    MI_E_1,
+    MI_F_1,
+    MI_Fs_1,
+    MI_Gb_1 = MI_Fs_1,
+    MI_G_1,
+    MI_Gs_1,
+    MI_Ab_1 = MI_Gs_1,
+    MI_A_1,
+    MI_As_1,
+    MI_Bb_1 = MI_As_1,
+    MI_B_1,
+#endif
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 2
+    MI_C_2,
+    MI_Cs_2,
+    MI_Db_2 = MI_Cs_2,
+    MI_D_2,
+    MI_Ds_2,
+    MI_Eb_2 = MI_Ds_2,
+    MI_E_2,
+    MI_F_2,
+    MI_Fs_2,
+    MI_Gb_2 = MI_Fs_2,
+    MI_G_2,
+    MI_Gs_2,
+    MI_Ab_2 = MI_Gs_2,
+    MI_A_2,
+    MI_As_2,
+    MI_Bb_2 = MI_As_2,
+    MI_B_2,
+#endif
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 3
+    MI_C_3,
+    MI_Cs_3,
+    MI_Db_3 = MI_Cs_3,
+    MI_D_3,
+    MI_Ds_3,
+    MI_Eb_3 = MI_Ds_3,
+    MI_E_3,
+    MI_F_3,
+    MI_Fs_3,
+    MI_Gb_3 = MI_Fs_3,
+    MI_G_3,
+    MI_Gs_3,
+    MI_Ab_3 = MI_Gs_3,
+    MI_A_3,
+    MI_As_3,
+    MI_Bb_3 = MI_As_3,
+    MI_B_3,
+#endif
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 4
+    MI_C_4,
+    MI_Cs_4,
+    MI_Db_4 = MI_Cs_4,
+    MI_D_4,
+    MI_Ds_4,
+    MI_Eb_4 = MI_Ds_4,
+    MI_E_4,
+    MI_F_4,
+    MI_Fs_4,
+    MI_Gb_4 = MI_Fs_4,
+    MI_G_4,
+    MI_Gs_4,
+    MI_Ab_4 = MI_Gs_4,
+    MI_A_4,
+    MI_As_4,
+    MI_Bb_4 = MI_As_4,
+    MI_B_4,
+#endif
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 5
+    MI_C_5,
+    MI_Cs_5,
+    MI_Db_5 = MI_Cs_5,
+    MI_D_5,
+    MI_Ds_5,
+    MI_Eb_5 = MI_Ds_5,
+    MI_E_5,
+    MI_F_5,
+    MI_Fs_5,
+    MI_Gb_5 = MI_Fs_5,
+    MI_G_5,
+    MI_Gs_5,
+    MI_Ab_5 = MI_Gs_5,
+    MI_A_5,
+    MI_As_5,
+    MI_Bb_5 = MI_As_5,
+    MI_B_5,
+#endif
+
+#if !MIDI_ENABLE_STRICT || MIDI_TONE_KEYCODE_OCTAVES > 5
+    MIDI_TONE_MAX = MI_B_5,
+#elif MIDI_TONE_KEYCODE_OCTAVES > 4
+    MIDI_TONE_MAX = MI_B_4,
+#elif MIDI_TONE_KEYCODE_OCTAVES > 3
+    MIDI_TONE_MAX = MI_B_3,
+#elif MIDI_TONE_KEYCODE_OCTAVES > 2
+    MIDI_TONE_MAX = MI_B_2,
+#elif MIDI_TONE_KEYCODE_OCTAVES > 1
+    MIDI_TONE_MAX = MI_B_1,
+#elif MIDI_TONE_KEYCODE_OCTAVES > 0
+    MIDI_TONE_MAX = MI_B,
+#endif
+
+    MIDI_OCTAVE_MIN,
+    MI_OCT_N2 = MIDI_OCTAVE_MIN,
+    MI_OCT_N1,
+    MI_OCT_0,
+    MI_OCT_1,
+    MI_OCT_2,
+    MI_OCT_3,
+    MI_OCT_4,
+    MI_OCT_5,
+    MI_OCT_6,
+    MI_OCT_7,
+    MIDI_OCTAVE_MAX = MI_OCT_7,
+    MI_OCTD, // octave down
+    MI_OCTU, // octave up
+
+    MIDI_TRANSPOSE_MIN,
+    MI_TRNS_N6 = MIDI_TRANSPOSE_MIN,
+    MI_TRNS_N5,
+    MI_TRNS_N4,
+    MI_TRNS_N3,
+    MI_TRNS_N2,
+    MI_TRNS_N1,
+    MI_TRNS_0,
+    MI_TRNS_1,
+    MI_TRNS_2,
+    MI_TRNS_3,
+    MI_TRNS_4,
+    MI_TRNS_5,
+    MI_TRNS_6,
+    MIDI_TRANSPOSE_MAX = MI_TRNS_6,
+    MI_TRNSD, // transpose down
+    MI_TRNSU, // transpose up
+
+    MIDI_VELOCITY_MIN,
+    MI_VEL_1 = MIDI_VELOCITY_MIN,
+    MI_VEL_2,
+    MI_VEL_3,
+    MI_VEL_4,
+    MI_VEL_5,
+    MI_VEL_6,
+    MI_VEL_7,
+    MI_VEL_8,
+    MI_VEL_9,
+    MI_VEL_10,
+    MIDI_VELOCITY_MAX = MI_VEL_10,
+    MI_VELD, // velocity down
+    MI_VELU, // velocity up
+
+    MIDI_CHANNEL_MIN,
+    MI_CH1 = MIDI_CHANNEL_MIN,
+    MI_CH2,
+    MI_CH3,
+    MI_CH4,
+    MI_CH5,
+    MI_CH6,
+    MI_CH7,
+    MI_CH8,
+    MI_CH9,
+    MI_CH10,
+    MI_CH11,
+    MI_CH12,
+    MI_CH13,
+    MI_CH14,
+    MI_CH15,
+    MI_CH16,
+    MIDI_CHANNEL_MAX = MI_CH16,
+    MI_CHD, // previous channel
+    MI_CHU, // next channel
+
+    MI_ALLOFF, // all notes off
+
+    MI_SUS, // sustain
+    MI_PORT, // portamento
+    MI_SOST, // sostenuto
+    MI_SOFT, // soft pedal
+    MI_LEG,  // legato
+
+    MI_MOD, // modulation
+    MI_MODSD, // decrease modulation speed
+    MI_MODSU, // increase modulation speed
+#endif // MIDI_ADVANCED
 
     // Backlight functionality
     BL_0,
@@ -279,9 +509,6 @@ enum quantum_keycodes {
 #define BL_ON  BL_9
 #define BL_OFF BL_0
 
-#define MI_ON MIDI_ON
-#define MI_OFF MIDI_OFF
-
 // GOTO layer - 16 layers max
 // when:
 // ON_PRESS    = 1

quantum/template/config.h

@@ -159,4 +159,27 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
 
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+//#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 1
+
 #endif

quantum/template/keymaps/default/Makefile

@@ -9,7 +9,7 @@ CONSOLE_ENABLE = no         # Console for debug(+400)
 COMMAND_ENABLE = yes        # Commands for debug and configuration
 NKRO_ENABLE = yes           # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE = no            # MIDI controls
+MIDI_ENABLE = no            # MIDI support (+2400 to 4200, depending on config)
 AUDIO_ENABLE = no           # Audio output on port C6
 UNICODE_ENABLE = no         # Unicode
 BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID

quantum/template/rules.mk

@@ -61,7 +61,7 @@ SLEEP_LED_ENABLE ?= no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 NKRO_ENABLE ?= no            # USB Nkey Rollover
 BACKLIGHT_ENABLE ?= no       # Enable keyboard backlight functionality on B7 by default
-MIDI_ENABLE ?= no            # MIDI controls
+MIDI_ENABLE ?= no            # MIDI support (+2400 to 4200, depending on config)
 UNICODE_ENABLE ?= no         # Unicode
 BLUETOOTH_ENABLE ?= no       # Enable Bluetooth with the Adafruit EZ-Key HID
 AUDIO_ENABLE ?= no           # Audio output on port C6

tmk_core/protocol/lufa/lufa.c

@@ -1096,16 +1096,23 @@ void cc_callback(MidiDevice * device,
     uint8_t chan, uint8_t num, uint8_t val);
 void sysex_callback(MidiDevice * device,
     uint16_t start, uint8_t length, uint8_t * data);
+
+void setup_midi(void)
+{
+#ifdef MIDI_ADVANCED
+	midi_init();
+#endif
+	midi_device_init(&midi_device);
+    midi_device_set_send_func(&midi_device, usb_send_func);
+    midi_device_set_pre_input_process_func(&midi_device, usb_get_midi);
+}
 #endif
 
 int main(void)  __attribute__ ((weak));
 int main(void)
 {
-
 #ifdef MIDI_ENABLE
-    midi_device_init(&midi_device);
-    midi_device_set_send_func(&midi_device, usb_send_func);
-    midi_device_set_pre_input_process_func(&midi_device, usb_get_midi);
+    setup_midi();
 #endif
 
     setup_mcu();
@@ -1170,7 +1177,9 @@ int main(void)
 
 #ifdef MIDI_ENABLE
         midi_device_process(&midi_device);
-        // MIDI_Task();
+#ifdef MIDI_ADVANCED
+        midi_task();
+#endif
 #endif
 
 #if defined(RGBLIGHT_ANIMATIONS) & defined(RGBLIGHT_ENABLE)

tmk_core/protocol/lufa/lufa.h

@@ -49,7 +49,7 @@
 #include <LUFA/Drivers/USB/USB.h>
 #include "host.h"
 #ifdef MIDI_ENABLE
-  #include "midi.h"
+  #include "process_midi.h"
 #endif
 #ifdef __cplusplus
 extern "C" {