bluetooth

6 files changed, 277 insertions, 207 deletions

diff --git a/keyboard/preonic/Makefile b/keyboard/preonic/Makefile
index 40bd36aecf..0145e44bc6 100644
--- a/keyboard/preonic/Makefile
+++ b/keyboard/preonic/Makefile
@@ -127,7 +127,8 @@ MIDI_ENABLE = yes 		# MIDI controls
 BACKLIGHT_ENABLE = yes
 
 ifdef MIDI_ENABLE
-	SRC += keymap_midi.c
+	SRC += keymap_midi.c \
+		   beeps.c
 endif
 
 # Optimize size but this may cause error "relocation truncated to fit"
diff --git a/keyboard/preonic/beeps.c b/keyboard/preonic/beeps.c
index 13e46e1daf..8ffd70f417 100644
--- a/keyboard/preonic/beeps.c
+++ b/keyboard/preonic/beeps.c
@@ -5,31 +5,6 @@
 #include <avr/io.h>
 
 #define PI 3.14159265
-#define CHANNEL OCR1C
-
-volatile uint16_t sample;
-uint16_t lastSample;
-
-const int sounddata_length=200;
-
-const unsigned char sounddata_data[] PROGMEM = {128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 
-128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 129, 127, 129, 128, 127, 133, 
-117, 109, 125, 121, 116, 132, 140, 126, 114, 114, 116, 120, 114, 93, 73, 66, 76, 116, 142, 129, 
-128, 129, 120, 119, 118, 104, 87, 123, 181, 194, 196, 198, 189, 176, 160, 162, 172, 164, 164, 183, 
-197, 188, 168, 167, 170, 165, 185, 209, 206, 196, 196, 199, 185, 162, 156, 167, 176, 173, 170, 166, 
-151, 142, 140, 134, 130, 127, 113, 86, 67, 66, 69, 75, 73, 75, 86, 90, 91, 84, 65, 48, 
-41, 30, 26, 56, 91, 88, 72, 70, 73, 82, 89, 73, 57, 60, 74, 89, 92, 77, 63, 60, 
-53, 47, 56, 64, 63, 61, 56, 54, 52, 36, 16, 22, 51, 66, 67, 70, 76, 88, 99, 92, 
-77, 74, 85, 100, 106, 97, 83, 85, 96, 108, 133, 160, 164};
 
 void delay_us(int count) {
   while(count--) {
@@ -37,202 +12,235 @@ void delay_us(int count) {
   }
 }
 
-void beeps() {
- //    DDRB |= (1<<7);
- //    PORTB &= ~(1<<7);
-    
- //    // Use full 16-bit resolution. 
- //    ICR1 = 0xFFFF;
-
- //    // I could write a wall of text here to explain... but TL;DW
- //    // Go read the ATmega32u4 datasheet.
- //    // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on
-    
- //    // Pin PB7 = OCR1C (Timer 1, Channel C)
- //    // Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0
- //    // (i.e. start high, go low when counter matches.)
- //    // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0
- //    // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1
-    
- //    TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010;
- //    TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
-
-
- //    // Turn off PWM control on PB7, revert to output low.
- //    // TCCR1A &= ~(_BV(COM1C1));
- //    // CHANNEL = ((1 << level) - 1);
-
- //    // Turn on PWM control of PB7
- //    TCCR1A |= _BV(COM1C1);
- //    // CHANNEL = level << OFFSET | 0x0FFF;
- //    // CHANNEL = 0b1010101010101010;
-
- //    float x = 12;
- //    float y = 24;
- //    float length = 50;
- //    float scale = 1;
-
- // //    int f1 = 1000000/440;
- // //    int f2 = 1000000/880;
-	// // for (uint32_t i = 0; i < length * 1000; i++) {
-	// // 	// int frequency = 1/((sin(PI*2*i*scale*pow(2, x/12.0))*.5+1 + sin(PI*2*i*scale*pow(2, y/12.0))*.5+1) / 2); 
-
-	// // 	ICR1 = f1; // Set max to the period
-	// // 	OCR1C = f1 >> 1; // Set compare to half the period
- // //     	// _delay_us(10);
-	// // }
- //    int frequency = 1000000/440;
-	// ICR1 = frequency; // Set max to the period
-	// OCR1C = frequency >> 1; // Set compare to half the period
- //    _delay_us(500000);
-
- //    TCCR1A &= ~(_BV(COM1C1));
- //    CHANNEL = 0;
-play_notes();
-
-
-	// play_note(55*pow(2, 0/12.0), 	1);
-	// play_note(55*pow(2, 12/12.0), 	1);
-	// play_note(55*pow(2, 24/12.0), 	1);
-	// play_note(55*pow(2, 0/12.0), 	1);
-	// play_note(55*pow(2, 12/12.0), 	1);
-	// play_note(55*pow(2, 24/12.0), 	1);
-
-	// play_note(0, 					4);
-
-	// play_note(55*pow(2, 0/12.0), 	8);
-	// play_note(55*pow(2, 12/12.0), 	4);
-	// play_note(55*pow(2, 10/12.0), 	4);
-	// play_note(55*pow(2, 12/12.0), 	8);
-	// play_note(55*pow(2, 10/12.0), 	4);
-	// play_note(55*pow(2, 7/12.0), 	2);
-	// play_note(55*pow(2, 8/12.0), 	2);
-	// play_note(55*pow(2, 7/12.0), 	16);
-	// play_note(0, 					4);
-	// play_note(55*pow(2, 3/12.0), 	8);
-	// play_note(55*pow(2, 5/12.0), 	4);
-	// play_note(55*pow(2, 7/12.0), 	4);
-	// play_note(55*pow(2, 7/12.0), 	8);
-	// play_note(55*pow(2, 5/12.0), 	4);
-	// play_note(55*pow(2, 3/12.0), 	4);
-	// play_note(55*pow(2, 2/12.0), 	16);
+int voices = 0;
+double frequency = 0;
+int volume = 0;
+int position = 0;
+
+double frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+bool sliding = false;
+#define RANGE 1000
+volatile int i=0; //elements of the wave
 
 
+void beeps() {
+    play_notes();
 }
 
-void play_note(float freq, int length) {
-    DDRB |= (1<<7);
-    PORTB &= ~(1<<7);
+void send_freq(double freq, int vol) {
+    int duty = (((double)F_CPU) / freq);
+    ICR3 = duty; // Set max to the period
+    OCR3A = duty >> (0x10 - vol); // Set compare to half the period
+}
 
-    if (freq > 0) {
-	    int frequency = 1000000/freq;
-		ICR1 = frequency; // Set max to the period
-		OCR1C = frequency >> 1; // Set compare to half the period
+void stop_all_notes() {
+    voices = 0;
+    TCCR3A = 0;
+    TCCR3B = 0;
+    frequency = 0;
+    volume = 0;
 
-	    TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010;
-	    TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
+    for (int i = 0; i < 8; i++) {
+        frequencies[i] = 0;
+        volumes[i] = 0;
     }
-
-	for (int i = 0; i < length; i++) {
-	    _delay_us(50000);
-	}
-
-    TCCR1A &= ~(_BV(COM1C1));
 }
 
-// This is called at 8000 Hz to load the next sample.
-ISR(TIMER1_COMPA_vect) {
-    if (sample >= sounddata_length) {
-        if (sample == sounddata_length + lastSample) {
-            TIMSK1 &= ~_BV(OCIE1A);
-
-			// Disable the per-sample timer completely.
-   			 TCCR1B &= ~_BV(CS10);
-        }
-        else {
-            OCR1C = sounddata_length + lastSample - sample;                
+void stop_note(double freq) {
+    for (int i = 7; i >= 0; i--) {
+        if (frequencies[i] == freq) {
+            frequencies[i] = 0;
+            volumes[i] = 0;
+            for (int j = i; (j < 7); j++) {
+                frequencies[j] = frequencies[j+1];
+                frequencies[j+1] = 0;
+                volumes[j] = volumes[j+1];
+                volumes[j+1] = 0;
+            }
         }
     }
-    else {
-        OCR1C = pgm_read_byte(&sounddata_data[sample]);            
+    voices--;
+    if (voices < 0)
+        voices = 0;
+    if (voices == 0) {
+        TCCR3A = 0;
+        TCCR3B = 0;
+        frequency = 0;
+        volume = 0;
+    } else {
+        double freq = frequencies[voices - 1];
+        int vol = volumes[voices - 1];
+        if (frequency < freq) {
+            sliding = true;
+            for (double f = frequency; f <= freq; f += ((freq - frequency) / 500.0)) {
+                send_freq(f, vol);
+            }
+            sliding = false;
+        } else if (frequency > freq) {
+            sliding = true;
+            for (double f = frequency; f >= freq; f -= ((frequency - freq) / 500.0)) {
+                send_freq(f, vol);
+            }
+            sliding = false;
+        }
+        send_freq(freq, vol);
+        frequency = freq;
+        volume = vol;
     }
-
-    ++sample;
 }
 
-void play_notes() {
+void init_notes() {
+    // TCCR1A = (1 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (1 << WGM10);
+    // TCCR1B = (1 << COM1B1) | (0 << COM1A0) | (1 << WGM13) | (1 << WGM12) | (0 << CS12) | (0 << CS11) | (1 << CS10);
 
+    // DDRC |= (1<<6); 
 
-    // Set up Timer 2 to do pulse width modulation on the speaker
-    // pin.
+    // TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+    // TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (0 << CS31) | (1 << CS30);
 
-    DDRB |= (1<<7);
-    PORTB &= ~(1<<7);
+    // ICR3 = 0xFFFF; 
+    // OCR3A = (int)((float)wave[i]*ICR3/RANGE); //go to next array element
 
-    // Use internal clock (datasheet p.160)
-    // ASSR &= ~(_BV(EXCLK) | _BV(AS2));
 
-    // Set fast PWM mode  (p.157)
-    TCCR1A |= _BV(WGM21) | _BV(WGM20);
-    TCCR1B &= ~_BV(WGM22);
+    // cli();
 
-    // Do non-inverting PWM on pin OC2A (p.155)
-    // On the Arduino this is pin 11.
-    TCCR1A = (TCCR2A | _BV(COM2A1)) & ~_BV(COM2A0);
-    TCCR1A &= ~(_BV(COM2B1) | _BV(COM2B0));
-    // No prescaler (p.158)
-    TCCR1B = (TCCR1B & ~(_BV(CS12) | _BV(CS11))) | _BV(CS10);
+    // /* Enable interrupt on timer2 == 127, with clk/8 prescaler. At 16MHz,
+    //    this gives a timer interrupt at 15625Hz. */
+    // TIMSK3 = (1 << OCIE3A);
 
-    // Set initial pulse width to the first sample.
-    OCR1A = pgm_read_byte(&sounddata_data[0]);
+    // /* clear/reset timer on match */
+    // // TCCR3A = 1<<WGM31 | 0<<WGM30;  CTC mode, reset on match 
+    // // TCCR3B = 0<<CS32 | 1<<CS31 | 0<<CS30; /* clk, /8 prescaler */
 
+    // TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+    // TCCR3B = (0 << WGM33) | (0 << WGM32) | (0 << CS32) | (0 << CS31) | (1 << CS30);
 
 
+    // TCCR1A = (1 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10);
+    // TCCR1B = (1 << WGM12) | (0 << CS12) | (0 << CS11) | (1 << CS10);
+    // // SPCR = 0x50;
+    // // SPSR = 0x01;
+    // DDRC |= (1<<6);
+    // // ICR3 = 0xFFFF; 
+    // // OCR3A=80;
+    // PORTC |= (1<<6);
 
-	cli();
+    // sei();
+}
+
+// #define highByte(c) ((c >> 8) & 0x00FF)
+// #define lowByte(c) (c & 0x00FF)
+
+ISR(TIMER3_COMPA_vect) {
+
+    if (ICR3 > 0 && !sliding) {
+        switch (position) {
+            case 0: {
+                int duty = (((double)F_CPU) / (frequency));
+                ICR3 = duty; // Set max to the period
+                OCR3A = duty >> 1; // Set compare to half the period
+                break;
+            }
+            case 1: {
+                int duty = (((double)F_CPU) / (frequency*2));
+                ICR3 = duty; // Set max to the period
+                OCR3A = duty >> 1; // Set compare to half the period
+                break;
+            }
+            case 2: {
+                int duty = (((double)F_CPU) / (frequency*3));
+                ICR3 = duty; // Set max to the period
+                OCR3A = duty >> 1; // Set compare to half the period
+                break;
+            }
+        }
+        position = (position + 1) % 3;
+    }
+//     /* OCR2A has been cleared, per TCCR2A above */
+//     // OCR3A = 127;
+
+//     // pos1 += incr1;
+//     // pos2 += incr2;
+//     // pos3 += incr3;
+
+//     // sample = sinewave[highByte(pos1)] + sinewave[highByte(pos2)] + sinewave[highByte(pos3)];
 
-    // Set CTC mode (Clear Timer on Compare Match) (p.133)
-    // Have to set OCR1A *after*, otherwise it gets reset to 0!
-    TCCR2B = (TCCR2B & ~_BV(WGM13)) | _BV(WGM12);
-    TCCR2A = TCCR2A & ~(_BV(WGM11) | _BV(WGM10));
+//     // OCR3A = sample;
 
-    // No prescaler (p.134)
-    TCCR2B = (TCCR2B & ~(_BV(CS12) | _BV(CS11))) | _BV(CS10);
 
-    // Set the compare register (OCR1A).
-    // OCR1A is a 16-bit register, so we have to do this with
-    // interrupts disabled to be safe.
-    // OCR2A = F_CPU / SAMPLE_RATE;    // 16e6 / 8000 = 2000
-    OCR2A = 2000;
+//     OCR3A=pgm_read_byte(&sinewave[pos1]);
+//     pos1++;
+//     // PORTC &= ~(1<<6);
 
-    // Enable interrupt when TCNT1 == OCR1A (p.136)
-    TIMSK1 |= _BV(OCIE2A);
+//     /* buffered, 1x gain, active mode */
+//     // SPDR = highByte(sample) | 0x70;
+//     // while (!(SPSR & (1<<SPIF)));
 
-    sample = 0;
-    sei();
+//     // SPDR = lowByte(sample);
+//     // while (!(SPSR & (1<<SPIF)));
+
+//     // PORTC |= (1<<6);
 }
 
-void note(int x, float length) {
-    DDRB |= (1<<1);
-	int t = (int)(440*pow(2,-x/12.0)); // starting note
-    for (int y = 0; y < length*1000/t; y++) { // note length
-        PORTB |= (1<<1);
-        delay_us(t);
-        PORTB &= ~(1<<1);
-        delay_us(t);
+void play_note(double freq, int vol) {
+
+    if (freq > 0) {
+        DDRC |= (1<<6); 
+
+        TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+        TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
+
+        if (frequency != 0) {
+            if (frequency < freq) {
+                for (double f = frequency; f <= freq; f += ((freq - frequency) / 500.0)) {
+                    send_freq(f, vol);
+                }
+            } else if (frequency > freq) {
+                for (double f = frequency; f >= freq; f -= ((frequency - freq) / 500.0)) {
+                    send_freq(f, vol);
+                }
+            }
+        }
+        send_freq(freq, vol);
+        frequency = freq;
+        volume = vol;
+
+        frequencies[voices] = frequency;
+        volumes[voices] = volume;
+        voices++;
     }
-	PORTB &= ~(1<<1);
+    // ICR3 = 0xFFFF;
+    // for (int i = 0; i < 10000; i++) {
+    //     OCR3A = round((sin(i*freq)*.5)+.5)*0xFFFF;
+    //     // _delay_us(50);
+    // }
+
+    // TCCR3A = 0;
+    // TCCR3B = 0;
 }
 
-void true_note(float x, float y, float length) {
-	for (uint32_t i = 0; i < length * 50; i++) {
-		uint32_t v = (uint32_t) (round(sin(PI*2*i*640000*pow(2, x/12.0))*.5+1 + sin(PI*2*i*640000*pow(2, y/12.0))*.5+1) / 2 * pow(2, 8)); 
-		for (int u = 0; u < 8; u++) {
-			if (v & (1 << u) && !(PORTB&(1<<1)))
-		        PORTB |= (1<<1);
-		    else if (PORTB&(1<<1))
-	        	PORTB &= ~(1<<1);
-		}
-	}
-	PORTB &= ~(1<<1);
-}
\ No newline at end of file
+// void note(int x, float length) {
+//     DDRC |= (1<<6);
+//  int t = (int)(440*pow(2,-x/12.0)); // starting note
+//     for (int y = 0; y < length*1000/t; y++) { // note length
+//         PORTC |= (1<<6);
+//         delay_us(t);
+//         PORTC &= ~(1<<6);
+//         delay_us(t);
+//     }
+//  PORTC &= ~(1<<6);
+// }
+
+// void true_note(float x, float y, float length) {
+//  for (uint32_t i = 0; i < length * 50; i++) {
+//      uint32_t v = (uint32_t) (round(sin(PI*2*i*640000*pow(2, x/12.0))*.5+1 + sin(PI*2*i*640000*pow(2, y/12.0))*.5+1) / 2 * pow(2, 8)); 
+//      for (int u = 0; u < 8; u++) {
+//          if (v & (1 << u) && !(PORTC&(1<<6)))
+//              PORTC |= (1<<6);
+//          else if (PORTC&(1<<6))
+//              PORTC &= ~(1<<6);
+//      }
+//  }
+//  PORTC &= ~(1<<6);
+// }
\ No newline at end of file
diff --git a/keyboard/preonic/beeps.h b/keyboard/preonic/beeps.h
index 3e3c634ff5..378983c605 100644
--- a/keyboard/preonic/beeps.h
+++ b/keyboard/preonic/beeps.h
@@ -6,4 +6,7 @@
 void note(int x, float length);
 void beeps();
 void true_note(float x, float y, float length);
-void play_note(float freq, int length);
\ No newline at end of file
+void play_note(double freq, int vol);
+void stop_note(double freq);
+void stop_all_notes();
+void init_notes();
\ No newline at end of file
diff --git a/keyboard/preonic/extended_keymaps/extended_keymap_lock.c b/keyboard/preonic/extended_keymaps/extended_keymap_lock.c
index 8edf8a283d..ec7bc776ac 100644
--- a/keyboard/preonic/extended_keymaps/extended_keymap_lock.c
+++ b/keyboard/preonic/extended_keymaps/extended_keymap_lock.c
@@ -1,8 +1,8 @@
 #include "extended_keymap_common.h"
 #include "backlight.h"
 #include "action_layer.h"
-#include "lufa.h"
 #include "keymap_midi.h"
+#include "beeps.h"
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 [0] = { /* Qwerty */
diff --git a/keyboard/preonic/keymap_midi.c b/keyboard/preonic/keymap_midi.c
index c7937bb9b5..a0fa59990c 100644
--- a/keyboard/preonic/keymap_midi.c
+++ b/keyboard/preonic/keymap_midi.c
@@ -20,37 +20,91 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <lufa.h>
 
 uint8_t starting_note = 0x0C;
+int offset = 7;
 
 void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
 {
-	if (id != 0) {
-	    if (record->event.pressed) {
-	    	midi_send_noteon(&midi_device, opt, (id & 0xFF), 127);
-	    } else {
-	        midi_send_noteoff(&midi_device, opt, (id & 0xFF), 127);
-	    }
-	}
-
-    if (record->event.key.col == 11 && record->event.key.row == 4 && record->event.pressed) {
-        starting_note++;
+    if (id != 0) {
+        if (record->event.pressed) {
+            midi_send_noteon(&midi_device, opt, (id & 0xFF), 127);
+        } else {
+            midi_send_noteoff(&midi_device, opt, (id & 0xFF), 127);
+        }
+    }
+
+    if (record->event.key.col == (MATRIX_COLS - 1) && record->event.key.row == (MATRIX_ROWS - 1)) {
+        if (record->event.pressed) {
+            starting_note++;
+            play_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
+            midi_send_cc(&midi_device, 0, 0x7B, 0);
+            midi_send_cc(&midi_device, 1, 0x7B, 0);
+            midi_send_cc(&midi_device, 2, 0x7B, 0);
+            midi_send_cc(&midi_device, 3, 0x7B, 0);
+            midi_send_cc(&midi_device, 4, 0x7B, 0);
+            return;
+        } else {
+            stop_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)));
+            stop_all_notes();
+            return;
+        }
+    }
+    if (record->event.key.col == (MATRIX_COLS - 2) && record->event.key.row == (MATRIX_ROWS - 1)) {
+        if (record->event.pressed) {
+            starting_note--;
+            play_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
+            midi_send_cc(&midi_device, 0, 0x7B, 0);
+            midi_send_cc(&midi_device, 1, 0x7B, 0);
+            midi_send_cc(&midi_device, 2, 0x7B, 0);
+            midi_send_cc(&midi_device, 3, 0x7B, 0);
+            midi_send_cc(&midi_device, 4, 0x7B, 0);
+            return;
+        } else {
+            stop_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[0 + offset])/12.0+(MATRIX_ROWS - 1)));
+            stop_all_notes();
+            return;
+        }
+    }
+
+    if (record->event.key.col == (MATRIX_COLS - 3) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
+        offset++;
         midi_send_cc(&midi_device, 0, 0x7B, 0);
         midi_send_cc(&midi_device, 1, 0x7B, 0);
         midi_send_cc(&midi_device, 2, 0x7B, 0);
         midi_send_cc(&midi_device, 3, 0x7B, 0);
         midi_send_cc(&midi_device, 4, 0x7B, 0);
+        stop_all_notes();
+        for (int i = 0; i <= 7; i++) {
+            play_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
+            _delay_us(80000);
+            stop_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)));
+            _delay_us(8000);
+        }
+        return;
     }
-    if (record->event.key.col == 8 && record->event.key.row == 4 && record->event.pressed) {
-        starting_note--;
+    if (record->event.key.col == (MATRIX_COLS - 4) && record->event.key.row == (MATRIX_ROWS - 1) && record->event.pressed) {
+        offset--;
         midi_send_cc(&midi_device, 0, 0x7B, 0);
         midi_send_cc(&midi_device, 1, 0x7B, 0);
         midi_send_cc(&midi_device, 2, 0x7B, 0);
         midi_send_cc(&midi_device, 3, 0x7B, 0);
         midi_send_cc(&midi_device, 4, 0x7B, 0);
+        stop_all_notes();
+        for (int i = 0; i <= 7; i++) {
+            play_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)), 0xC);
+            _delay_us(80000);
+            stop_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[i + offset])/12.0+(MATRIX_ROWS - 1)));
+            _delay_us(8000);
+        }
+        return;
     }
 
     if (record->event.pressed) {
-    	midi_send_noteon(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
+        // midi_send_noteon(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
+        midi_send_noteon(&midi_device, 0, (starting_note + SCALE[record->event.key.col + offset])+12*(MATRIX_ROWS - record->event.key.row), 127);
+        play_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)), 0xF);
     } else {
-        midi_send_noteoff(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
+        // midi_send_noteoff(&midi_device, record->event.key.row, starting_note + SCALE[record->event.key.col], 127);
+        midi_send_noteoff(&midi_device, 0, (starting_note + SCALE[record->event.key.col + offset])+12*(MATRIX_ROWS - record->event.key.row), 127);
+        stop_note(((double)261.6)*pow(2.0, -1.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)));
     }
 }
\ No newline at end of file
diff --git a/keyboard/preonic/keymap_midi.h b/keyboard/preonic/keymap_midi.h
index 02bf35c243..c5917f884e 100644
--- a/keyboard/preonic/keymap_midi.h
+++ b/keyboard/preonic/keymap_midi.h
@@ -23,7 +23,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define CHNL(note, channel) (note + (channel << 8))
 
-#define SCALE (int []){ 0, 2, 4, 5, 7, 9, 11, 12, 14, 16, 17, 19, 21, 23, 24, 26, 28, 29, 31, 33, 35, 36}
+#define SCALE (int []){ 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), }
 
 #define N_CN1  (0x600C + (12 * -1) + 0 )
 #define N_CN1S (0x600C + (12 * -1) + 1 )