Added project files

LICENSE

@@ -1,4 +1,5 @@
-Copyright (c) <year> <owner> . All rights reserved.
+Copyright (c) 2017, Ridiculous Glitch <goat@ridiculousglitch.com>
+
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Makefile

@@ -0,0 +1,21 @@
+CROSS_COMPILE=/opt/avr8-gnu-toolchain-linux_x86_64/bin/avr-
+OBJCOPY=$(CROSS_COMPILE)objcopy
+CC=$(CROSS_COMPILE)gcc
+CFLAGS=-O3 -Wall -mmcu=attiny85
+
+main.hex: main
+	$(OBJCOPY) -j .data -j .text -O ihex main main.hex
+
+main: main.c wavetables.c
+
+# hfuse DISABLE RESET, then *high-voltage serial ONLY*
+# avrdude -c usbasp -p t85 -U lfuse:w:0xf1:m -U hfuse:w:0x5f:m # efuse
+
+flash: main.hex
+#	avrdude -c usbasp -p t85 -U lfuse:w:0xf1:m # hfuse,efuse
+	avrdude -c usbasp -p t85 -U flash:w:main.hex
+
+clean:
+	rm -f main main.hex
+
+.PHONY: clean flash

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genwts.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+
+import numpy as np
+import pandas as pd
+
+def voss(nrows, ncols=16):
+    """Generates pink noise using the Voss-McCartney algorithm.
+
+    nrows: number of values to generate
+    rcols: number of random sources to add
+
+    returns: NumPy array
+    """
+    array = np.empty((nrows, ncols))
+    array.fill(np.nan)
+    array[0, :] = np.random.random(ncols)
+    array[:, 0] = np.random.random(nrows)
+
+    # the total number of changes is nrows
+    n = nrows
+    cols = np.random.geometric(0.5, n)
+    cols[cols >= ncols] = 0
+    rows = np.random.randint(nrows, size=n)
+    array[rows, cols] = np.random.random(n)
+
+    df = pd.DataFrame(array)
+    df.fillna(method='ffill', axis=0, inplace=True)
+    total = df.sum(axis=1)
+
+    return total.values
+
+def print_array(ys):
+    print '{\n%s\n}' % (',\n'.join([ ', '.join([ '0x%02x' % (y,) for y in ys[i:(i+16)] ]) for i in range(0, N, 16) ]),)
+
+N = 512
+# Sine
+xs = np.linspace(0, 2 * np.pi, N)
+ys = np.uint8(np.clip((np.sin(xs) + 1) * 255. / 2, 0, 255))
+print_array(ys)
+
+# Square
+xs = np.linspace(0, 1, N)
+ys = np.uint8([ 0 if x <= 0.5 else 255 for x in xs ])
+print_array(ys)
+
+# Triangle
+xs = np.linspace(0, 1, N)
+ys = (np.array([ 2 * x if x <= 0.5 else 2 - 2 * x for x in xs ]) * 255).astype(np.uint8)
+print_array(ys)
+
+# Pink Noise
+#fn = 64
+#xs = np.linspace(0, 1, N)
+#ys = (np.repeat(voss(fn) * 255, len(xs) / fn)).astype(np.uint8)
+
+# White Noise
+xs = np.linspace(0, 1, N)
+ys = np.random.randint(0, N, len(xs)).astype(np.uint8)
+print_array(ys)
+
+import matplotlib.pyplot as plt
+plt.plot(xs, ys)
+plt.show()

main.c

@@ -0,0 +1,196 @@
+#define F_CPU 20000000UL
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "wavetables.h"
+
+const uint16_t NOTE_CYCLES[108] PROGMEM = {
+	15420, 14534, 13742, 12950, 12244, 11544, 10920, 10308,  9712,
+	        9182,  8670,  8180,  7710,  7294,  6872,  6496,  6122,  5788,
+	        5460,  5154,  4868,  4592,  4336,  4090,  3864,  3648,  3442,
+	        3248,  3066,  2894,  2730,  2578,  2432,  2296,  2168,  2046,
+	        1930,  1822,  1720,  1624,  1532,  1446,  1366,  1290,  1218,
+	        1148,  1084,  1024,   966,   912,   860,   812,   768,   724,
+	         684,   646,   610,   574,   542,   512,   484,   456,   430,
+	         406,   384,   362,   342,   324,   304,   288,   272,   256,
+	         242,   228,   216,   204,   192,   182,   172,   162,   152,
+	         144,   136,   128,   122,   114,   108,   102,    96,    92,
+	          86,    82,    76,    72,    68,    64,    62,    58,    54,
+	          52,    48,    46,    44,    42,    38,    36,    34,    32
+};
+
+volatile uint8_t pwm_cycle = 0;
+
+// ISR(TIMER1_COMPB_vect)
+// {
+// }
+
+ISR(TIMER1_OVF_vect)
+{
+	++pwm_cycle;
+}
+
+typedef struct {
+	uint16_t pwm_cycle, pwm_num_cycles;
+	uint8_t wt;
+} oscillator_t;
+
+//the PCINT0_vect vector is used to identify the pin change interrupt.
+// ISR(PCINT0_vect)
+// {
+//     mute = !((PINB & (1 << PB1)));
+// }
+
+int main()
+{
+uint16_t n;
+uint8_t d, button_id = 1, line = 0, adc_timer = 0, lfo_volume = 0;
+oscillator_t vco = { 0, 0, 0 }, lfo = { 0, 0, 0 };
+
+  //OSCCAL = 83;
+
+	PLLCSR |= 0x6;
+
+	// setup output pins
+	DDRB = (1 << DDB4) | (1 << DDB2) | (1 << DDB1) | (1 << DDB0);
+
+	// set line mux pins low and turn op ADC pull-up resistor
+	PORTB = ~((1 << PB0) | (1 << PB1) | (1 << PB2)) | (1 << PB3);
+
+	// Set the ADC input to PB2/ADC1, left adjust result
+	ADMUX = (3 << MUX0) | (1 << ADLAR);
+
+	// Set the prescaler to clock/8 & enable ADC
+	ADCSRA |= (1 << ADPS2) | (1 << ADPS1) | (1 << ADPS0) | (1 << ADEN);
+
+	// Configure counter/timer1 for fast PWM on PB4
+  GTCCR = (1 << PWM1B) | (1 << COM1B1);
+
+	// Set Timer 1 prescaler to clock/1 = 64.0MHz.
+	TCCR1 = (1 << CS10);
+
+	// Interrupts on OC1A match + overflow
+  //TIMSK |= (1 << OCIE1B) | (1 << TOIE1);
+
+	// Interrupts on OC1A overflow
+	TIMSK |= (1 << TOIE1);
+	OCR1B = 0;
+	OCR1C = 255;
+
+	// GIMSK = (1 << PCIE); //Enable Pin Change Interrupts
+	// PCMSK = (1 << PCINT1); //Set Pin 2 to cause an interrupt. You can also enable it on multiple pins
+
+	ADCSRA |= (1 << ADSC);  // Start A2D Conversions
+	while (1) {
+		if(((ADCSRA >> ADSC) & 0x1) == 0) {
+			if(adc_timer == 0) {
+				d = ADCH;
+				switch(line) {
+					case 0:
+						if(button_id > 0) {
+							d /= 5;
+							switch(button_id) {
+								case 7:
+									d += 10;
+									break;
+								case 6:
+									d += 9;
+									break;
+								case 5:
+									d += 7;
+									break;
+								case 4:
+									d += 5;
+									break;
+								case 3:
+									d += 4;
+									break;
+								case 2:
+									d += 2;
+									break;
+								default:
+									break;
+							}
+							vco.pwm_num_cycles = pgm_read_word_near(NOTE_CYCLES + 21 + d);
+						}
+						//vco.pwm_num_cycles = 7812;
+						break;
+					case 1:
+						if(button_id > 0) {
+							lfo.pwm_num_cycles = 0xffff - (d << 8);
+						}
+						break;
+					case 2:
+						lfo_volume = d;
+						//lfo_volume = 127;
+						break;
+					case 3:
+						//button_id = (d < 77 ? 7 : (d > 250 ? 0 : (279 - d) / 29));
+						if(d >= 241)
+							button_id = 0;
+						else if(d >= 216)
+							button_id = 1;
+						else if(d >= 195)
+							button_id = 2;
+						else if(d >= 173)
+							button_id = 3;
+						else if(d >= 144)
+							button_id = 4;
+						else if(d >= 106)
+							button_id = 5;
+						else if(d >= 42)
+							button_id = 6;
+						else
+							button_id = 7;
+						break;
+					case 4:
+						vco.wt = d / (256 / WAVETABLES_NUM);
+						break;
+					case 6:
+						lfo.wt = d / (256 / WAVETABLES_NUM);
+						break;
+					default:
+						// nop;
+						break;
+				}
+
+				line = (line + 1) % 8;
+				PORTB = (PORTB & ~0x7) | line;
+				adc_timer = 1;
+			}
+			else if(adc_timer == 1) {
+				ADCSRA |= (1 << ADSC);  // Start A2D Conversions
+				adc_timer = 0;
+			}
+			else
+				++adc_timer;
+		}
+
+		cli();
+		n = pwm_cycle;
+		sei();
+
+		d = 0;
+
+		if(lfo_volume <= 252) {
+			vco.pwm_cycle = (vco.pwm_cycle + n) % vco.pwm_num_cycles;
+			d += (uint16_t)pgm_read_byte_near(WAVETABLES[vco.wt] + (uint16_t)(((uint32_t)(vco.pwm_cycle)) * WAVETABLES_SIZE / vco.pwm_num_cycles)) * (255 - lfo_volume) >> 8;
+		}
+
+		if(lfo_volume > 8) {
+			//n += 2;
+			lfo.pwm_cycle = (lfo.pwm_cycle + n) % lfo.pwm_num_cycles;
+			d += (uint16_t)pgm_read_byte_near(WAVETABLES[lfo.wt] + (uint16_t)(((uint32_t)(lfo.pwm_cycle)) * WAVETABLES_SIZE / lfo.pwm_num_cycles)) * lfo_volume >> 8;
+		}
+
+		cli();
+		if(button_id > 0)
+			OCR1B = d;
+		pwm_cycle -= n;
+		sei();
+	}
+
+	return 0;
+}

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+:100AB00029E0660F771F881F991F2A95D1F79101AA
+:100AC00040E050E0AFD0F801E20FF31F849190E0D6
+:100AD000B40177D0F90E99CF2130A1F0F22FFF5F4A
+:100AE000F983C4CF992379F1913009F0B2CF2B81EA
+:100AF000222309F4AECF90E0982F88271C01209480
+:100B00003094A7CF369A1982B1CF813FB0F5883D96
+:100B1000B0F5833C08F03DC08D3A08F046C08039FE
+:100B200008F046C08A3608F046C08A3208F046C04F
+:100B300087E08B838ECF82958695869583708C8394
+:100B400088CF8F8386CFBB81BB2309F482CF65E03A
+:100B500049D0E82FB43029F1A8F0FB81F630F9F044
+:100B6000D8F0F73011F4EAE0E80FF0E0EE0FFF1FE5
+:100B7000E85BFF4F459054906CCF1B826ACF91E0A9
+:100B80009B8367CFB23079F0B33079F7E4E0E80FB8
+:100B9000ECCFA2E0AB835DCFE7E0E80FE6CFE75F05
+:100BA000E4CFEB5FE2CFEE5FE0CFB3E0BB8351CFAA
+:100BB000E4E0EB834ECFF5E0FB834BCF26E02B83C5
+:100BC00048CF0024552704C0080E591F880F991FCD
+:100BD000009729F076956795B8F37105B9F7802DE0
+:100BE000952F0895991B79E004C0991F961708F076
+:100BF000961B881F7A95C9F780950895AA1BBB1B81
+:100C000051E107C0AA1FBB1FA617B70710F0A61B0C
+:100C1000B70B881F991F5A95A9F780959095BC012D
+:100C2000CD010895A1E21A2EAA1BBB1BFD010DC028
+:100C3000AA1FBB1FEE1FFF1FA217B307E407F5078C
+:100C400020F0A21BB30BE40BF50B661F771F881F68
+:100C5000991F1A9469F760957095809590959B01FE
+:0C0C6000AC01BD01CF010895F894FFCF56
+:00000001FF

wavetables.c

@@ -0,0 +1,140 @@
+#include <avr/pgmspace.h>
+#include "wavetables.h"
+
+const uint8_t WAVETABLES[WAVETABLES_NUM][WAVETABLES_SIZE] PROGMEM = {{
+    // Sine
+    0x7f, 0x81, 0x82, 0x84, 0x85, 0x87, 0x88, 0x8a, 0x8c, 0x8d, 0x8f, 0x90, 0x92, 0x93, 0x95, 0x96,
+    0x98, 0x99, 0x9b, 0x9d, 0x9e, 0xa0, 0xa1, 0xa3, 0xa4, 0xa6, 0xa7, 0xa9, 0xaa, 0xac, 0xad, 0xae,
+    0xb0, 0xb1, 0xb3, 0xb4, 0xb6, 0xb7, 0xb8, 0xba, 0xbb, 0xbd, 0xbe, 0xbf, 0xc1, 0xc2, 0xc3, 0xc5,
+    0xc6, 0xc7, 0xc9, 0xca, 0xcb, 0xcc, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
+    0xd9, 0xda, 0xdb, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe6, 0xe7, 0xe8,
+    0xe9, 0xea, 0xeb, 0xec, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf0, 0xf1, 0xf2, 0xf2, 0xf3, 0xf4, 0xf4,
+    0xf5, 0xf5, 0xf6, 0xf7, 0xf7, 0xf8, 0xf8, 0xf9, 0xf9, 0xfa, 0xfa, 0xfa, 0xfb, 0xfb, 0xfb, 0xfc,
+    0xfc, 0xfc, 0xfd, 0xfd, 0xfd, 0xfd, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe,
+    0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfc,
+    0xfc, 0xfc, 0xfb, 0xfb, 0xfb, 0xfa, 0xfa, 0xf9, 0xf9, 0xf8, 0xf8, 0xf7, 0xf7, 0xf6, 0xf6, 0xf5,
+    0xf5, 0xf4, 0xf3, 0xf3, 0xf2, 0xf1, 0xf1, 0xf0, 0xef, 0xee, 0xee, 0xed, 0xec, 0xeb, 0xea, 0xea,
+    0xe9, 0xe8, 0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0, 0xdf, 0xde, 0xdd, 0xdc, 0xdb, 0xda,
+    0xd9, 0xd8, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xcf, 0xce, 0xcd, 0xcc, 0xca, 0xc9, 0xc8, 0xc7,
+    0xc5, 0xc4, 0xc3, 0xc1, 0xc0, 0xbf, 0xbd, 0xbc, 0xbb, 0xb9, 0xb8, 0xb6, 0xb5, 0xb3, 0xb2, 0xb1,
+    0xaf, 0xae, 0xac, 0xab, 0xa9, 0xa8, 0xa6, 0xa5, 0xa3, 0xa2, 0xa0, 0x9f, 0x9d, 0x9c, 0x9a, 0x99,
+    0x97, 0x96, 0x94, 0x93, 0x91, 0x8f, 0x8e, 0x8c, 0x8b, 0x89, 0x88, 0x86, 0x84, 0x83, 0x81, 0x80,
+    0x7e, 0x7d, 0x7b, 0x7a, 0x78, 0x76, 0x75, 0x73, 0x72, 0x70, 0x6f, 0x6d, 0x6b, 0x6a, 0x68, 0x67,
+    0x65, 0x64, 0x62, 0x61, 0x5f, 0x5e, 0x5c, 0x5b, 0x59, 0x58, 0x56, 0x55, 0x53, 0x52, 0x50, 0x4f,
+    0x4d, 0x4c, 0x4b, 0x49, 0x48, 0x46, 0x45, 0x43, 0x42, 0x41, 0x3f, 0x3e, 0x3d, 0x3b, 0x3a, 0x39,
+    0x37, 0x36, 0x35, 0x34, 0x32, 0x31, 0x30, 0x2f, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x26, 0x25,
+    0x24, 0x23, 0x22, 0x21, 0x20, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15,
+    0x14, 0x14, 0x13, 0x12, 0x11, 0x10, 0x10, 0x0f, 0x0e, 0x0d, 0x0d, 0x0c, 0x0b, 0x0b, 0x0a, 0x09,
+    0x09, 0x08, 0x08, 0x07, 0x07, 0x06, 0x06, 0x05, 0x05, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, 0x02,
+    0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02,
+    0x02, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x05, 0x06, 0x06, 0x07, 0x07, 0x08, 0x09, 0x09,
+    0x0a, 0x0a, 0x0b, 0x0c, 0x0c, 0x0d, 0x0e, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x12, 0x13, 0x14, 0x15,
+    0x16, 0x17, 0x18, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x23, 0x24, 0x25,
+    0x26, 0x27, 0x28, 0x29, 0x2a, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x32, 0x33, 0x34, 0x35, 0x37, 0x38,
+    0x39, 0x3b, 0x3c, 0x3d, 0x3f, 0x40, 0x41, 0x43, 0x44, 0x46, 0x47, 0x48, 0x4a, 0x4b, 0x4d, 0x4e,
+    0x50, 0x51, 0x52, 0x54, 0x55, 0x57, 0x58, 0x5a, 0x5b, 0x5d, 0x5e, 0x60, 0x61, 0x63, 0x65, 0x66,
+    0x68, 0x69, 0x6b, 0x6c, 0x6e, 0x6f, 0x71, 0x72, 0x74, 0x76, 0x77, 0x79, 0x7a, 0x7c, 0x7d, 0x7f
+  }, {
+    // Square
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+  }, {
+    // Triangle
+    0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
+    0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e,
+    0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e,
+    0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e,
+    0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e,
+    0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e,
+    0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
+    0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e,
+    0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e,
+    0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e,
+    0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae,
+    0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe,
+    0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce,
+    0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde,
+    0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee,
+    0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe,
+    0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0, 0xef,
+    0xee, 0xed, 0xec, 0xeb, 0xea, 0xe9, 0xe8, 0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0, 0xdf,
+    0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9, 0xd8, 0xd7, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xd0, 0xcf,
+    0xce, 0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc8, 0xc7, 0xc6, 0xc5, 0xc4, 0xc3, 0xc2, 0xc1, 0xc0, 0xbf,
+    0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8, 0xb7, 0xb6, 0xb5, 0xb4, 0xb3, 0xb2, 0xb1, 0xb0, 0xaf,
+    0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa8, 0xa7, 0xa6, 0xa5, 0xa4, 0xa3, 0xa2, 0xa1, 0xa0, 0x9f,
+    0x9e, 0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90, 0x8f,
+    0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, 0x87, 0x86, 0x85, 0x84, 0x83, 0x82, 0x81, 0x80, 0x7f,
+    0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78, 0x77, 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x70, 0x6f,
+    0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68, 0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0x61, 0x60, 0x5f,
+    0x5e, 0x5d, 0x5c, 0x5b, 0x5a, 0x59, 0x58, 0x57, 0x56, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50, 0x4f,
+    0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49, 0x48, 0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0x41, 0x40, 0x3f,
+    0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f,
+    0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x1f,
+    0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f,
+    0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x00
+  }, {
+    // Noise
+    0x1f, 0xc9, 0x48, 0x8d, 0xcc, 0x3c, 0x21, 0x28, 0x69, 0x6d, 0x73, 0xb6, 0xdd, 0x50, 0x04, 0x6d,
+    0x5d, 0xfc, 0x38, 0x3e, 0x7d, 0x44, 0x82, 0x2c, 0x2a, 0x95, 0xef, 0xfd, 0x14, 0x28, 0xa6, 0x35,
+    0xe8, 0xe6, 0x79, 0xa6, 0x5f, 0x36, 0xd5, 0x3f, 0x39, 0xe7, 0xbe, 0x2f, 0x67, 0xe8, 0x98, 0x7b,
+    0x27, 0x93, 0xa0, 0x89, 0xb6, 0x6d, 0xaf, 0x8d, 0x0b, 0xef, 0xe1, 0x31, 0x91, 0x47, 0x52, 0xd5,
+    0xd8, 0x59, 0xa4, 0xd8, 0x1e, 0x80, 0x35, 0xfa, 0x03, 0x74, 0xe1, 0x63, 0x10, 0xbf, 0x0d, 0xaa,
+    0xad, 0x13, 0x3a, 0xc2, 0x07, 0x70, 0x41, 0xc8, 0x88, 0xec, 0x6f, 0xd2, 0x4e, 0xd1, 0x4b, 0x31,
+    0x98, 0x19, 0xbd, 0x0f, 0x7d, 0x53, 0x32, 0x06, 0xa9, 0xbd, 0x50, 0x89, 0x09, 0x74, 0xae, 0xc2,
+    0xa7, 0xc0, 0xe6, 0x3b, 0x91, 0x17, 0xfa, 0x24, 0x89, 0x46, 0xdb, 0x7f, 0xb3, 0x17, 0xfc, 0x3d,
+    0xe9, 0x67, 0x3a, 0x3f, 0x24, 0xb6, 0x24, 0x4b, 0x1e, 0xa7, 0xf5, 0x6d, 0xca, 0x3f, 0x35, 0x6f,
+    0x8d, 0xe3, 0xe5, 0x4e, 0xd5, 0x6e, 0xf0, 0xb4, 0xe9, 0x32, 0xba, 0x54, 0xfb, 0xc5, 0x14, 0x54,
+    0x4f, 0x8d, 0x43, 0x1b, 0x66, 0x56, 0xfa, 0x0d, 0x07, 0x7d, 0x82, 0x1b, 0xfa, 0xde, 0x17, 0x17,
+    0xcc, 0xd0, 0x04, 0xc9, 0xe7, 0x4b, 0x8c, 0xaf, 0x44, 0x51, 0x71, 0x11, 0x2f, 0xbd, 0x7c, 0x50,
+    0x21, 0x2f, 0x38, 0x95, 0x22, 0xc8, 0x96, 0x96, 0x14, 0x54, 0xee, 0xb3, 0x6f, 0xbb, 0x80, 0xf9,
+    0xae, 0xb3, 0xa6, 0x79, 0x9d, 0xa2, 0x4c, 0xc6, 0x1b, 0x7f, 0x28, 0xc8, 0x47, 0x9b, 0xf4, 0x6c,
+    0xfe, 0x7c, 0x39, 0x23, 0x24, 0x1f, 0x92, 0xea, 0x19, 0xa3, 0x35, 0x0b, 0x41, 0xa6, 0x8b, 0x5a,
+    0x7b, 0xef, 0xc2, 0xc0, 0x34, 0x14, 0xf6, 0x54, 0xbe, 0x89, 0x94, 0xca, 0x53, 0xb6, 0xc2, 0xb6,
+    0x37, 0xe9, 0x8f, 0x2f, 0x22, 0x76, 0x80, 0x6f, 0xd1, 0x4a, 0x1c, 0xc8, 0xa1, 0x6f, 0x48, 0x94,
+    0xe1, 0x64, 0xda, 0x31, 0x29, 0x65, 0x2f, 0x85, 0xfe, 0x1c, 0xe2, 0x64, 0xa0, 0x3f, 0x90, 0xda,
+    0x2c, 0x70, 0xa1, 0xd4, 0x50, 0x85, 0x92, 0xe5, 0xdc, 0x00, 0x68, 0xb6, 0x8b, 0x9b, 0xbb, 0x41,
+    0xf1, 0x41, 0x7a, 0xc1, 0x70, 0xd1, 0xac, 0xac, 0x31, 0xc3, 0x9e, 0x7c, 0x85, 0xd5, 0xf3, 0xfa,
+    0x0f, 0x53, 0x7a, 0x51, 0x56, 0x45, 0xd6, 0xf9, 0xa1, 0x60, 0x10, 0x06, 0x45, 0x59, 0x44, 0xd7,
+    0xf5, 0xea, 0x9f, 0xfb, 0xc6, 0xfd, 0x6f, 0xc0, 0x92, 0x68, 0xfd, 0xb9, 0xdd, 0x6b, 0x09, 0xee,
+    0xec, 0x79, 0x62, 0x24, 0xd9, 0xd9, 0x34, 0xdd, 0x10, 0xe7, 0x09, 0xc6, 0x60, 0xce, 0xfb, 0xb6,
+    0x37, 0x4c, 0x39, 0xb5, 0x75, 0xc3, 0x18, 0xc0, 0xfd, 0x44, 0x4b, 0xc5, 0x75, 0x7c, 0xe4, 0x3d,
+    0xa5, 0xc5, 0xe6, 0x07, 0x62, 0xc8, 0x58, 0x27, 0x19, 0x12, 0xfe, 0x49, 0x71, 0xf9, 0x7a, 0xe9,
+    0xed, 0x8f, 0x6a, 0x8c, 0x1a, 0x41, 0x25, 0xb5, 0x13, 0xe0, 0xbf, 0x0f, 0x7b, 0x62, 0x6c, 0x22,
+    0x57, 0x2c, 0x17, 0x2b, 0x5f, 0x5b, 0x8a, 0xd8, 0xe0, 0x00, 0xa8, 0xd8, 0x6e, 0x4b, 0x85, 0x29,
+    0xf0, 0xe2, 0x07, 0xd1, 0xed, 0x99, 0x0f, 0xf8, 0x31, 0x6b, 0x02, 0x8f, 0x9e, 0x16, 0xd6, 0xed,
+    0xaf, 0x57, 0xd5, 0x35, 0x83, 0x34, 0x00, 0x1c, 0xbf, 0x74, 0xfa, 0x9c, 0x38, 0x41, 0x7c, 0xa2,
+    0x2c, 0x95, 0x76, 0xf0, 0x27, 0x08, 0xc4, 0xeb, 0x66, 0x25, 0x84, 0x13, 0xe8, 0x76, 0xa1, 0x24,
+    0x0b, 0x92, 0x06, 0x47, 0x22, 0x7e, 0x4c, 0xaf, 0x27, 0x6d, 0x07, 0x19, 0x1a, 0x7d, 0xc6, 0x19,
+    0x28, 0x87, 0x70, 0x27, 0x97, 0x8f, 0x5b, 0x36, 0xf3, 0xf4, 0x84, 0xb2, 0x03, 0x5e, 0xff, 0x63
+}};

wavetables.h

@@ -0,0 +1,11 @@
+#ifndef WAVETABLES_H
+#define WAVETABLES_H
+
+#include <stdint.h>
+
+#define WAVETABLES_NUM 4
+#define WAVETABLES_SIZE 512
+
+extern const uint8_t WAVETABLES[WAVETABLES_NUM][WAVETABLES_SIZE];
+
+#endif // WAVETABLES_H