Jonne Valola / PokittoLib Featured

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   YATTT sd_map_test cPong SnowDemo ... more

PokittoLib

Library for programming Pokitto hardware

How to Use

  1. Import this library to online compiler (see button "import" on the right hand side
  2. DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
  3. Change My_settings.h according to your project
  4. Start coding!

POKITTO_LIBS/Synth/Synth_oscfuncs.cpp@0:e8b8f36b4505, 2017-09-18 (annotated)

Committer:
Pokitto
Date:
Mon Sep 18 11:47:51 2017 +0000
Revision:
0:e8b8f36b4505
Initial;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 0:e8b8f36b4505 1 /**************************************************************************/
Pokitto 0:e8b8f36b4505 2 /*!
Pokitto 0:e8b8f36b4505 3 @file Synth_oscfuncs.cpp
Pokitto 0:e8b8f36b4505 4 @author Jonne Valola
Pokitto 0:e8b8f36b4505 5
Pokitto 0:e8b8f36b4505 6 @section LICENSE
Pokitto 0:e8b8f36b4505 7
Pokitto 0:e8b8f36b4505 8 Software License Agreement (BSD License)
Pokitto 0:e8b8f36b4505 9
Pokitto 0:e8b8f36b4505 10 Copyright (c) 2016, Jonne Valola
Pokitto 0:e8b8f36b4505 11 All rights reserved.
Pokitto 0:e8b8f36b4505 12
Pokitto 0:e8b8f36b4505 13 Redistribution and use in source and binary forms, with or without
Pokitto 0:e8b8f36b4505 14 modification, are permitted provided that the following conditions are met:
Pokitto 0:e8b8f36b4505 15 1. Redistributions of source code must retain the above copyright
Pokitto 0:e8b8f36b4505 16 notice, this list of conditions and the following disclaimer.
Pokitto 0:e8b8f36b4505 17 2. Redistributions in binary form must reproduce the above copyright
Pokitto 0:e8b8f36b4505 18 notice, this list of conditions and the following disclaimer in the
Pokitto 0:e8b8f36b4505 19 documentation and/or other materials provided with the distribution.
Pokitto 0:e8b8f36b4505 20 3. Neither the name of the copyright holders nor the
Pokitto 0:e8b8f36b4505 21 names of its contributors may be used to endorse or promote products
Pokitto 0:e8b8f36b4505 22 derived from this software without specific prior written permission.
Pokitto 0:e8b8f36b4505 23
Pokitto 0:e8b8f36b4505 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
Pokitto 0:e8b8f36b4505 25 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Pokitto 0:e8b8f36b4505 26 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Pokitto 0:e8b8f36b4505 27 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
Pokitto 0:e8b8f36b4505 28 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Pokitto 0:e8b8f36b4505 29 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Pokitto 0:e8b8f36b4505 30 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
Pokitto 0:e8b8f36b4505 31 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Pokitto 0:e8b8f36b4505 32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Pokitto 0:e8b8f36b4505 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Pokitto 0:e8b8f36b4505 34 */
Pokitto 0:e8b8f36b4505 35 /**************************************************************************/
Pokitto 0:e8b8f36b4505 36
Pokitto 0:e8b8f36b4505 37 #include "Synth.h"
Pokitto 0:e8b8f36b4505 38
Pokitto 0:e8b8f36b4505 39 /** OSCILLATOR FUNCTIONS **/
Pokitto 0:e8b8f36b4505 40
Pokitto 0:e8b8f36b4505 41 void setOSC(OSC* o,byte on=1, byte wave=1, byte loop=0, byte echo=0, byte adsr=0,
Pokitto 0:e8b8f36b4505 42 uint8_t notenumber=25, uint8_t volume=127,
Pokitto 0:e8b8f36b4505 43 uint16_t attack=0, uint16_t decay=0, uint16_t sustain=0, uint16_t release=0,
Pokitto 0:e8b8f36b4505 44 int16_t maxbend=0, int16_t bendrate=0, uint8_t arpmode = 0, uint8_t overdrive=0, uint8_t kick=0){
Pokitto 0:e8b8f36b4505 45 //Serial.println("SetOsc "); osc1
Pokitto 0:e8b8f36b4505 46 o->on = on;
Pokitto 0:e8b8f36b4505 47 o->overdrive = overdrive;
Pokitto 0:e8b8f36b4505 48 o->kick = kick;
Pokitto 0:e8b8f36b4505 49 o->wave = wave;
Pokitto 0:e8b8f36b4505 50 o->loop = loop;
Pokitto 0:e8b8f36b4505 51 o->echo = echo; //echo shifts left 8 steps to zero
Pokitto 0:e8b8f36b4505 52 o->echodiv = 0;
Pokitto 0:e8b8f36b4505 53 o->adsr = adsr;
Pokitto 0:e8b8f36b4505 54 if (arpmode) {
Pokitto 0:e8b8f36b4505 55 if (arpmode < 4) {o->arpmode = 1; o->arpspeed = arpmode;}
Pokitto 0:e8b8f36b4505 56 else if (arpmode < 7) {o->arpmode = 2; o->arpspeed = arpmode-3;}
Pokitto 0:e8b8f36b4505 57 else if (arpmode < 10) {o->arpmode = 3; o->arpspeed = arpmode-6; } // vibrato trial
Pokitto 0:e8b8f36b4505 58 else if (arpmode < 13) {o->arpmode = 4; o->arpspeed = arpmode-9; } // octave trial
Pokitto 0:e8b8f36b4505 59 else if (arpmode < 16) {o->arpmode = 5; o->arpspeed = arpmode-12; } // funk trial*/
Pokitto 0:e8b8f36b4505 60 } else o->arpmode = 0;
Pokitto 0:e8b8f36b4505 61 o->arpstep = 0;
Pokitto 0:e8b8f36b4505 62 o->count = 0;
Pokitto 0:e8b8f36b4505 63 noiseval = xorshift16(); //random(0,0xFFFF);
Pokitto 0:e8b8f36b4505 64
Pokitto 0:e8b8f36b4505 65 o->cinc = cincs[notenumber]<<POK_CINC_MULTIPLIER; // direct cinc from table, no calculation
Pokitto 0:e8b8f36b4505 66 o->tonic = notenumber; // save tonic for arpeggio use
Pokitto 0:e8b8f36b4505 67 if (wave == 2) o->cinc >>= 1; // correct pitch for saw wave
Pokitto 0:e8b8f36b4505 68 if (wave == 4) o->cinc <<= 1; // enable higher pitch for pure noise
Pokitto 0:e8b8f36b4505 69 o->vol = volume << 8;//volume;
Pokitto 0:e8b8f36b4505 70
Pokitto 0:e8b8f36b4505 71 if (adsr) {
Pokitto 0:e8b8f36b4505 72 o->attack = attack;
Pokitto 0:e8b8f36b4505 73 o->decay = decay;
Pokitto 0:e8b8f36b4505 74 o->sustain = sustain;
Pokitto 0:e8b8f36b4505 75 o->release = release;
Pokitto 0:e8b8f36b4505 76 o->adsrphase = 1;
Pokitto 0:e8b8f36b4505 77 if (!o->attack) o->adsrvol = o->vol; // start directly, no attack ramp
Pokitto 0:e8b8f36b4505 78 else o->adsrvol = 0;
Pokitto 0:e8b8f36b4505 79 } else {
Pokitto 0:e8b8f36b4505 80 o->attack = 0;
Pokitto 0:e8b8f36b4505 81 o->decay = 0;
Pokitto 0:e8b8f36b4505 82 o->sustain = 0;
Pokitto 0:e8b8f36b4505 83 o->release = 0;
Pokitto 0:e8b8f36b4505 84 o->adsrphase = 0;
Pokitto 0:e8b8f36b4505 85 o->adsrvol = o->vol; // will stay same all the time
Pokitto 0:e8b8f36b4505 86 }
Pokitto 0:e8b8f36b4505 87
Pokitto 0:e8b8f36b4505 88 if (bendrate != 0) {
Pokitto 0:e8b8f36b4505 89 o->bendrate = bendrate; // test value
Pokitto 0:e8b8f36b4505 90 o->pitchbend = 0;
Pokitto 0:e8b8f36b4505 91 o->maxbend = maxbend;
Pokitto 0:e8b8f36b4505 92 }
Pokitto 0:e8b8f36b4505 93 }
Pokitto 0:e8b8f36b4505 94
Pokitto 0:e8b8f36b4505 95 void setOSC(OSC* o,byte on, byte wave, uint16_t frq, uint8_t volume, uint32_t duration){
Pokitto 0:e8b8f36b4505 96 o->on = on;
Pokitto 0:e8b8f36b4505 97 o->overdrive = 0;
Pokitto 0:e8b8f36b4505 98 o->kick = 0;
Pokitto 0:e8b8f36b4505 99 o->wave = wave;
Pokitto 0:e8b8f36b4505 100 o->loop = 1;
Pokitto 0:e8b8f36b4505 101 o->echo = 1; //echo shifts left 8 steps to zero
Pokitto 0:e8b8f36b4505 102 o->echodiv = 0;
Pokitto 0:e8b8f36b4505 103 o->adsr = 1;
Pokitto 0:e8b8f36b4505 104 o->attack = 200;
Pokitto 0:e8b8f36b4505 105 o->decay = 200;
Pokitto 0:e8b8f36b4505 106 o->sustain = 20;
Pokitto 0:e8b8f36b4505 107 o->release = 10;
Pokitto 0:e8b8f36b4505 108 o->adsrphase = 1;
Pokitto 0:e8b8f36b4505 109 o->arpmode = 0;
Pokitto 0:e8b8f36b4505 110 o->count = 0;
Pokitto 0:e8b8f36b4505 111 noiseval = xorshift16(); //random(0,0xFFFF);
Pokitto 0:e8b8f36b4505 112 o->cinc = (frq/100)*(cincs[18]<<POK_CINC_MULTIPLIER); // its a kludge, i know. cant be bothered.
Pokitto 0:e8b8f36b4505 113 if (wave == 2) o->cinc >>= 1; // correct pitch for saw wave
Pokitto 0:e8b8f36b4505 114 if (wave == 4) o->cinc <<= 1; // enable higher pitch for pure noise
Pokitto 0:e8b8f36b4505 115 o->vol = volume << 8;//volume;
Pokitto 0:e8b8f36b4505 116 o->adsrvol = o->vol;
Pokitto 0:e8b8f36b4505 117 o->duration = duration*100;
Pokitto 0:e8b8f36b4505 118 o->maxbend = -4000;
Pokitto 0:e8b8f36b4505 119 o->bendrate = 1000;
Pokitto 0:e8b8f36b4505 120 }
Pokitto 0:e8b8f36b4505 121
Pokitto 0:e8b8f36b4505 122
Pokitto 0:e8b8f36b4505 123
Pokitto 0:e8b8f36b4505 124 void emptyOscillators(){
Pokitto 0:e8b8f36b4505 125 osc1.on = false; osc1.wave = 0; osc1.echo = 0; osc1.count = 0; osc1.cinc =0;
Pokitto 0:e8b8f36b4505 126 osc1.attack = 0; osc1.loop = 0; osc1.adsrphase = 1; osc1.adsr = 1; osc1.decay = 100;
Pokitto 0:e8b8f36b4505 127 osc1.pitchbend = 0; osc1.bendrate = 0; osc1.maxbend = 0; osc1.sustain = 0; osc1.release = 0;
Pokitto 0:e8b8f36b4505 128
Pokitto 0:e8b8f36b4505 129 osc2.on = false; osc2.wave = 0; osc2.echo = 0; osc2.count = 0; osc2.cinc =0;
Pokitto 0:e8b8f36b4505 130 osc2.attack = 0; osc2.loop = 0; osc2.adsrphase = 1; osc2.adsr = 1; osc2.decay = 100;
Pokitto 0:e8b8f36b4505 131 osc2.pitchbend = 0; osc2.bendrate = 0; osc2.maxbend = 0; osc2.sustain = 0; osc2.release = 0;
Pokitto 0:e8b8f36b4505 132
Pokitto 0:e8b8f36b4505 133 osc3.on = false; osc3.wave = 0; osc3.echo = 0; osc3.count = 0; osc3.cinc =0;
Pokitto 0:e8b8f36b4505 134 osc3.attack = 0; osc3.loop = 0; osc3.adsrphase = 1; osc3.adsr = 1; osc3.decay = 100;
Pokitto 0:e8b8f36b4505 135 osc3.pitchbend = 0; osc3.bendrate = 0; osc3.maxbend = 0; osc3.sustain = 0; osc3.release = 0;
Pokitto 0:e8b8f36b4505 136 }
Pokitto 0:e8b8f36b4505 137
Pokitto 0:e8b8f36b4505 138
Pokitto 0:e8b8f36b4505 139 void testOsc(){
Pokitto 0:e8b8f36b4505 140 setOSC(&osc1,1,WTRI,1,0,1,25,127,10,10,20,2,0,0,0,0,0); // C3 = 25
Pokitto 0:e8b8f36b4505 141 setOSC(&osc2,1,WTRI,1,0,1,29-12,63,2,1,20,2,0,0,14,0,0); // E3 = 29
Pokitto 0:e8b8f36b4505 142 setOSC(&osc3,1,WSAW,1,0,1,25,15,30,30,20,2,-1,-1000,12,0,0); // G3 = 32
Pokitto 0:e8b8f36b4505 143 }
Pokitto 0:e8b8f36b4505 144
Pokitto 0:e8b8f36b4505 145 void playNote(uint8_t oscnum, uint8_t notenum, uint8_t i) {
Pokitto 0:e8b8f36b4505 146 OSC* o;
Pokitto 0:e8b8f36b4505 147 if (oscnum == 1) o = &osc1; else if (oscnum == 2) o = &osc2; else o = &osc3;
Pokitto 0:e8b8f36b4505 148 setOSC(o,1,patch[i].wave,patch[i].loop,patch[i].echo,patch[i].adsr,notenum,patch[i].vol,
Pokitto 0:e8b8f36b4505 149 patch[i].attack,patch[i].decay,patch[i].sustain,patch[i].release,
Pokitto 0:e8b8f36b4505 150 patch[i].maxbend,patch[i].bendrate,patch[i].arpmode,patch[i].overdrive,patch[i].kick);
Pokitto 0:e8b8f36b4505 151 }
Pokitto 0:e8b8f36b4505 152
Pokitto 0:e8b8f36b4505 153 void makeSampleInstruments() {
Pokitto 0:e8b8f36b4505 154 /* sample instruments for testing */
Pokitto 0:e8b8f36b4505 155 patch[0].wave = WSQUARE;
Pokitto 0:e8b8f36b4505 156 patch[0].on = 1;
Pokitto 0:e8b8f36b4505 157 patch[0].vol = 127;
Pokitto 0:e8b8f36b4505 158 patch[0].loop = 0;
Pokitto 0:e8b8f36b4505 159 patch[0].echo = 0;
Pokitto 0:e8b8f36b4505 160
Pokitto 0:e8b8f36b4505 161 patch[0].adsr = 0;
Pokitto 0:e8b8f36b4505 162 patch[0].attack = 0;
Pokitto 0:e8b8f36b4505 163 patch[0].decay = 0;
Pokitto 0:e8b8f36b4505 164 patch[0].sustain = 0;
Pokitto 0:e8b8f36b4505 165 patch[0].release = 0;
Pokitto 0:e8b8f36b4505 166
Pokitto 0:e8b8f36b4505 167 patch[0].maxbend = -1000;
Pokitto 0:e8b8f36b4505 168 patch[0].bendrate = 100;
Pokitto 0:e8b8f36b4505 169 patch[0].arpmode = 3;
Pokitto 0:e8b8f36b4505 170 patch[0].overdrive = 0;
Pokitto 0:e8b8f36b4505 171 patch[0].kick = 0;
Pokitto 0:e8b8f36b4505 172
Pokitto 0:e8b8f36b4505 173 patch[1].wave = WSAW;
Pokitto 0:e8b8f36b4505 174 patch[1].on = 1;
Pokitto 0:e8b8f36b4505 175 patch[1].vol = 200;
Pokitto 0:e8b8f36b4505 176 patch[1].loop = 0;
Pokitto 0:e8b8f36b4505 177 patch[1].echo = 0;
Pokitto 0:e8b8f36b4505 178
Pokitto 0:e8b8f36b4505 179 patch[1].adsr = 0;
Pokitto 0:e8b8f36b4505 180 patch[1].attack = 0;
Pokitto 0:e8b8f36b4505 181 patch[1].decay = 0;
Pokitto 0:e8b8f36b4505 182 patch[1].sustain = 0;
Pokitto 0:e8b8f36b4505 183 patch[1].release = 0;
Pokitto 0:e8b8f36b4505 184
Pokitto 0:e8b8f36b4505 185 patch[1].maxbend = 0;
Pokitto 0:e8b8f36b4505 186 patch[1].bendrate = 0;
Pokitto 0:e8b8f36b4505 187 patch[1].arpmode = 1;
Pokitto 0:e8b8f36b4505 188 patch[1].overdrive = 0;
Pokitto 0:e8b8f36b4505 189 patch[1].kick = 0;
Pokitto 0:e8b8f36b4505 190
Pokitto 0:e8b8f36b4505 191 patch[2].wave = WTRI;
Pokitto 0:e8b8f36b4505 192 patch[2].on = 1;
Pokitto 0:e8b8f36b4505 193 patch[2].vol = 127;
Pokitto 0:e8b8f36b4505 194 patch[2].loop = 0;
Pokitto 0:e8b8f36b4505 195 patch[2].echo = 0;
Pokitto 0:e8b8f36b4505 196
Pokitto 0:e8b8f36b4505 197 patch[2].adsr = 1;
Pokitto 0:e8b8f36b4505 198 patch[2].attack = 10;
Pokitto 0:e8b8f36b4505 199 patch[2].decay = 0;
Pokitto 0:e8b8f36b4505 200 patch[2].sustain = 0;
Pokitto 0:e8b8f36b4505 201 patch[2].release = 0;
Pokitto 0:e8b8f36b4505 202
Pokitto 0:e8b8f36b4505 203 patch[2].maxbend = 0;
Pokitto 0:e8b8f36b4505 204 patch[2].bendrate = 0;
Pokitto 0:e8b8f36b4505 205 patch[2].arpmode = 1;
Pokitto 0:e8b8f36b4505 206 patch[2].overdrive = 0;
Pokitto 0:e8b8f36b4505 207 patch[2].kick = 0;
Pokitto 0:e8b8f36b4505 208
Pokitto 0:e8b8f36b4505 209 patch[3].wave = WNOISE;
Pokitto 0:e8b8f36b4505 210 patch[3].on = 1;
Pokitto 0:e8b8f36b4505 211 patch[3].vol = 127;
Pokitto 0:e8b8f36b4505 212 patch[3].loop = 1;
Pokitto 0:e8b8f36b4505 213 patch[3].echo = 1;
Pokitto 0:e8b8f36b4505 214
Pokitto 0:e8b8f36b4505 215 patch[3].adsr = 1;
Pokitto 0:e8b8f36b4505 216 patch[3].attack = 0;
Pokitto 0:e8b8f36b4505 217 patch[3].decay = 30;
Pokitto 0:e8b8f36b4505 218 patch[3].sustain = 30;
Pokitto 0:e8b8f36b4505 219 patch[3].release = 5;
Pokitto 0:e8b8f36b4505 220
Pokitto 0:e8b8f36b4505 221 patch[3].maxbend = 0;
Pokitto 0:e8b8f36b4505 222 patch[3].bendrate = 0;
Pokitto 0:e8b8f36b4505 223 patch[3].arpmode = 0;
Pokitto 0:e8b8f36b4505 224 patch[3].overdrive = 0;
Pokitto 0:e8b8f36b4505 225 patch[3].kick = 0;
Pokitto 0:e8b8f36b4505 226
Pokitto 0:e8b8f36b4505 227 patch[4].wave = WPNOISE;
Pokitto 0:e8b8f36b4505 228 patch[4].on = 1;
Pokitto 0:e8b8f36b4505 229 patch[4].vol = 127;
Pokitto 0:e8b8f36b4505 230 patch[4].loop = 0;
Pokitto 0:e8b8f36b4505 231 patch[4].echo = 0;
Pokitto 0:e8b8f36b4505 232
Pokitto 0:e8b8f36b4505 233 patch[4].adsr = 1;
Pokitto 0:e8b8f36b4505 234 patch[4].attack = 0;
Pokitto 0:e8b8f36b4505 235 patch[4].decay = 30;
Pokitto 0:e8b8f36b4505 236 patch[4].sustain = 30;
Pokitto 0:e8b8f36b4505 237 patch[4].release = 5;
Pokitto 0:e8b8f36b4505 238
Pokitto 0:e8b8f36b4505 239 patch[4].maxbend = 0;
Pokitto 0:e8b8f36b4505 240 patch[4].bendrate = 0;
Pokitto 0:e8b8f36b4505 241 patch[4].arpmode = 1;
Pokitto 0:e8b8f36b4505 242 patch[4].overdrive = 0;
Pokitto 0:e8b8f36b4505 243 patch[4].kick = 0;
Pokitto 0:e8b8f36b4505 244 }
Pokitto 0:e8b8f36b4505 245