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_HW/HWSound.cpp@28:958b71c4b92a, 2018-01-05 (annotated)

Committer:
Pokitto
Date:
Fri Jan 05 02:19:51 2018 +0000
Revision:
28:958b71c4b92a
Parent:
6:72f87b7c7400 
Sound level stored in EEPROM, sound output improved

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 6:72f87b7c7400 1 /**************************************************************************/
Pokitto 6:72f87b7c7400 2 /*!
Pokitto 6:72f87b7c7400 3 @file HWSound.cpp
Pokitto 6:72f87b7c7400 4 @author Jonne Valola
Pokitto 6:72f87b7c7400 5
Pokitto 6:72f87b7c7400 6 @section LICENSE
Pokitto 6:72f87b7c7400 7
Pokitto 6:72f87b7c7400 8 Software License Agreement (BSD License)
Pokitto 6:72f87b7c7400 9
Pokitto 6:72f87b7c7400 10 Copyright (c) 2016, Jonne Valola
Pokitto 6:72f87b7c7400 11 All rights reserved.
Pokitto 6:72f87b7c7400 12
Pokitto 6:72f87b7c7400 13 Redistribution and use in source and binary forms, with or without
Pokitto 6:72f87b7c7400 14 modification, are permitted provided that the following conditions are met:
Pokitto 6:72f87b7c7400 15 1. Redistributions of source code must retain the above copyright
Pokitto 6:72f87b7c7400 16 notice, this list of conditions and the following disclaimer.
Pokitto 6:72f87b7c7400 17 2. Redistributions in binary form must reproduce the above copyright
Pokitto 6:72f87b7c7400 18 notice, this list of conditions and the following disclaimer in the
Pokitto 6:72f87b7c7400 19 documentation and/or other materials provided with the distribution.
Pokitto 6:72f87b7c7400 20 3. Neither the name of the copyright holders nor the
Pokitto 6:72f87b7c7400 21 names of its contributors may be used to endorse or promote products
Pokitto 6:72f87b7c7400 22 derived from this software without specific prior written permission.
Pokitto 6:72f87b7c7400 23
Pokitto 6:72f87b7c7400 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
Pokitto 6:72f87b7c7400 25 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Pokitto 6:72f87b7c7400 26 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Pokitto 6:72f87b7c7400 27 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
Pokitto 6:72f87b7c7400 28 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Pokitto 6:72f87b7c7400 29 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Pokitto 6:72f87b7c7400 30 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
Pokitto 6:72f87b7c7400 31 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Pokitto 6:72f87b7c7400 32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Pokitto 6:72f87b7c7400 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Pokitto 6:72f87b7c7400 34 */
Pokitto 6:72f87b7c7400 35 /**************************************************************************/
Pokitto 6:72f87b7c7400 36
Pokitto 6:72f87b7c7400 37 #include "mbed.h"
Pokitto 6:72f87b7c7400 38 #include "HWSound.h"
Pokitto 6:72f87b7c7400 39 //#include "MCP4018.h"
Pokitto 6:72f87b7c7400 40 #include "SoftwareI2C.h"
Pokitto 6:72f87b7c7400 41 #include "Pokitto_settings.h"
Pokitto 6:72f87b7c7400 42 #include "PokittoDisk.h"
Pokitto 6:72f87b7c7400 43 #include "PokittoGlobs.h"
Pokitto 6:72f87b7c7400 44 #include "Synth.h"
Pokitto 6:72f87b7c7400 45
Pokitto 6:72f87b7c7400 46
Pokitto 6:72f87b7c7400 47
Pokitto 6:72f87b7c7400 48 using namespace Pokitto;
Pokitto 6:72f87b7c7400 49
Pokitto 6:72f87b7c7400 50 /** Sound Variables **/
Pokitto 6:72f87b7c7400 51 #if (POK_STREAMING_MUSIC > 0)
Pokitto 6:72f87b7c7400 52 unsigned char buffers[4][BUFFER_SIZE];
Pokitto 6:72f87b7c7400 53 volatile int currentBuffer = 0, oldBuffer = 0;
Pokitto 6:72f87b7c7400 54 volatile int bufindex = 0, vol=1;
Pokitto 6:72f87b7c7400 55 volatile unsigned char * currentPtr;
Pokitto 6:72f87b7c7400 56 volatile unsigned char * endPtr;
Pokitto 6:72f87b7c7400 57 int8_t streamvol=3;
Pokitto 6:72f87b7c7400 58 uint32_t streamcounter=0;
Pokitto 6:72f87b7c7400 59 uint8_t streamstep=0;
Pokitto 6:72f87b7c7400 60 #endif
Pokitto 6:72f87b7c7400 61
Pokitto 6:72f87b7c7400 62 #if POK_ENABLE_SOUND > 0
Pokitto 6:72f87b7c7400 63 pwmout_t Pokitto::audiopwm; // this way (instead of PwmOut class) pwm doesn't start screaming until it is initialized !
Pokitto 6:72f87b7c7400 64 Ticker Pokitto::audio;
Pokitto 6:72f87b7c7400 65
Pokitto 6:72f87b7c7400 66 using namespace Pokitto;
Pokitto 6:72f87b7c7400 67
Pokitto 6:72f87b7c7400 68 /** stream output and status */
Pokitto 6:72f87b7c7400 69 uint8_t Pokitto::streambyte,Pokitto::streamon;
Pokitto 6:72f87b7c7400 70
Pokitto 6:72f87b7c7400 71 uint8_t soundbuf[256], soundbufindex=0, Pokitto::HWvolume=0;
Pokitto 6:72f87b7c7400 72 bool volpotError=false; //test for broken MCP4018
Pokitto 6:72f87b7c7400 73
Pokitto 6:72f87b7c7400 74 uint16_t soundbyte;
Pokitto 6:72f87b7c7400 75
Pokitto 6:72f87b7c7400 76
Pokitto 6:72f87b7c7400 77 #if POK_USE_DAC > 0
Pokitto 6:72f87b7c7400 78 #if POK_BOARDREV == 1
Pokitto 6:72f87b7c7400 79 /** 2-layer board rev 1.3 **/
Pokitto 6:72f87b7c7400 80 DigitalOut dac0(P1_6);
Pokitto 6:72f87b7c7400 81 DigitalOut dac1(P1_0);
Pokitto 6:72f87b7c7400 82 DigitalOut dac2(P1_16);
Pokitto 6:72f87b7c7400 83 DigitalOut dac3(P0_19);
Pokitto 6:72f87b7c7400 84 DigitalOut dac4(P0_17);
Pokitto 6:72f87b7c7400 85 DigitalOut dac5(P1_12);
Pokitto 6:72f87b7c7400 86 DigitalOut dac6(P1_15);
Pokitto 6:72f87b7c7400 87 DigitalOut dac7(P1_8);
Pokitto 6:72f87b7c7400 88 #else
Pokitto 6:72f87b7c7400 89 /** 4-layer board rev 2.1 **/
Pokitto 6:72f87b7c7400 90 DigitalOut dac0(P1_28);
Pokitto 6:72f87b7c7400 91 DigitalOut dac1(P1_29);
Pokitto 6:72f87b7c7400 92 DigitalOut dac2(P1_30);
Pokitto 6:72f87b7c7400 93 DigitalOut dac3(P1_31);
Pokitto 6:72f87b7c7400 94 /* has daniel made a mistake ?*/
Pokitto 6:72f87b7c7400 95 DigitalOut dac4(P2_20);
Pokitto 6:72f87b7c7400 96 DigitalOut dac5(P2_21);
Pokitto 6:72f87b7c7400 97 DigitalOut dac6(P2_22);
Pokitto 6:72f87b7c7400 98 DigitalOut dac7(P2_23);
Pokitto 6:72f87b7c7400 99
Pokitto 6:72f87b7c7400 100 DigitalOut amp(P1_17);
Pokitto 6:72f87b7c7400 101
Pokitto 6:72f87b7c7400 102 #endif // POK_BOARDREV
Pokitto 6:72f87b7c7400 103 #endif // POK_USE_DAC
Pokitto 6:72f87b7c7400 104
Pokitto 6:72f87b7c7400 105 #if POK_BOARDREV == 2
Pokitto 6:72f87b7c7400 106 //MCP4018 volpot(P0_5,P0_4);
Pokitto 6:72f87b7c7400 107
Pokitto 6:72f87b7c7400 108 void initHWvolumecontrol() {
Pokitto 6:72f87b7c7400 109 HWvolume=0;
Pokitto 6:72f87b7c7400 110 volpotError=true;
Pokitto 6:72f87b7c7400 111 //if (volpot.put(HWvolume)) volpotError=true; //try if MCP4018 answers
Pokitto 6:72f87b7c7400 112 setHWvolume(VOLUME_STARTUP);
Pokitto 6:72f87b7c7400 113 }
Pokitto 6:72f87b7c7400 114
Pokitto 6:72f87b7c7400 115 int Pokitto::setHWvolume(uint8_t v) {
Pokitto 6:72f87b7c7400 116 HWvolume = 0x7F&v;
Pokitto 6:72f87b7c7400 117 //if (!volpotError) return volpot.put(HWvolume); //use normal I2C
Pokitto 6:72f87b7c7400 118 /* fallback method for broken MCP4018 */
Pokitto 6:72f87b7c7400 119 SoftwareI2C swvolpot(P0_4, P0_5); //swapped SDA,SCL
Pokitto 6:72f87b7c7400 120 swvolpot.write(0x5e,HWvolume);
Pokitto 6:72f87b7c7400 121 return HWvolume;
Pokitto 6:72f87b7c7400 122 }
Pokitto 6:72f87b7c7400 123
Pokitto 6:72f87b7c7400 124 uint8_t Pokitto::getHWvolume() {
Pokitto 6:72f87b7c7400 125 return HWvolume;
Pokitto 6:72f87b7c7400 126 }
Pokitto 6:72f87b7c7400 127
Pokitto 6:72f87b7c7400 128 void Pokitto::changeHWvolume(int8_t v) {
Pokitto 6:72f87b7c7400 129 int temp = HWvolume + v;
Pokitto 6:72f87b7c7400 130 if (temp < 0) temp = 0; //prevent volume "looparound" than can make a massive crack
Pokitto 6:72f87b7c7400 131 if (temp > 127) temp = 127;
Pokitto 6:72f87b7c7400 132 setHWvolume(temp);
Pokitto 6:72f87b7c7400 133 }
Pokitto 6:72f87b7c7400 134
Pokitto 6:72f87b7c7400 135 uint8_t Pokitto::ampIsOn() {
Pokitto 6:72f87b7c7400 136 return amp;
Pokitto 6:72f87b7c7400 137 }
Pokitto 6:72f87b7c7400 138
Pokitto 6:72f87b7c7400 139 void Pokitto::ampEnable(uint8_t v) {
Pokitto 6:72f87b7c7400 140 if (v>1) v=1; // limit against funny values
Pokitto 6:72f87b7c7400 141 amp=v;
Pokitto 6:72f87b7c7400 142 }
Pokitto 6:72f87b7c7400 143 #endif // POK_BOARDREV == 2
Pokitto 6:72f87b7c7400 144
Pokitto 6:72f87b7c7400 145 void Pokitto::dac_write(uint8_t value) {
Pokitto 6:72f87b7c7400 146 #if POK_USE_DAC > 0
Pokitto 6:72f87b7c7400 147 #if POK_BOARDREV == 1 // was 1
Pokitto 6:72f87b7c7400 148 if (value & 1) SET_DAC0 else CLR_DAC0;
Pokitto 6:72f87b7c7400 149 value >>= 1;
Pokitto 6:72f87b7c7400 150 if (value & 1) SET_DAC1 else CLR_DAC1;
Pokitto 6:72f87b7c7400 151 value >>= 1;
Pokitto 6:72f87b7c7400 152 if (value & 1) SET_DAC2 else CLR_DAC2;
Pokitto 6:72f87b7c7400 153 value >>= 1;
Pokitto 6:72f87b7c7400 154 if (value & 1) SET_DAC3 else CLR_DAC3;
Pokitto 6:72f87b7c7400 155 value >>= 1;
Pokitto 6:72f87b7c7400 156 if (value & 1) SET_DAC4 else CLR_DAC4;
Pokitto 6:72f87b7c7400 157 value >>= 1;
Pokitto 6:72f87b7c7400 158 if (value & 1) SET_DAC5 else CLR_DAC5;
Pokitto 6:72f87b7c7400 159 value >>= 1;
Pokitto 6:72f87b7c7400 160 if (value & 1) SET_DAC6 else CLR_DAC6;
Pokitto 6:72f87b7c7400 161 value >>= 1;
Pokitto 6:72f87b7c7400 162 if (value & 1) SET_DAC7 else CLR_DAC7;
Pokitto 6:72f87b7c7400 163 #else
Pokitto 6:72f87b7c7400 164 //uint32_t val;
Pokitto 6:72f87b7c7400 165 //val = value<<28; //lower 4 bits go higher - because port mask is used, no AND is needed to clear bits
Pokitto 6:72f87b7c7400 166 //val += value<<(15-4); //higher 4 bits go lower. No need to shift by 15 because bits are in the higher nibble
Pokitto 6:72f87b7c7400 167 /* daniel has made a mistake with ports */
Pokitto 6:72f87b7c7400 168 //val = ((value&0x70)<<(28-4)); //higher 4 bits go higher - because port mask is used, no AND is needed to clear bits
Pokitto 6:72f87b7c7400 169 //val += value<<(15); //lower 4 bits go lower. No need to shift by 15 because bits are in the higher nibble
Pokitto 6:72f87b7c7400 170 //SET_MASK_DAC;
Pokitto 6:72f87b7c7400 171 //LPC_GPIO_PORT->MPIN[1] = val; // write bits to port
Pokitto 6:72f87b7c7400 172 //CLR_MASK_DAC;
Pokitto 6:72f87b7c7400 173 /* fixed here */
Pokitto 6:72f87b7c7400 174 /*val=value;
Pokitto 6:72f87b7c7400 175 SET_MASK_DAC_LO;
Pokitto 6:72f87b7c7400 176 LPC_GPIO_PORT->MPIN[1] = val<<28; // write lower 4 bits to port
Pokitto 6:72f87b7c7400 177 CLR_MASK_DAC_LO;
Pokitto 6:72f87b7c7400 178 SET_MASK_DAC_HI;
Pokitto 6:72f87b7c7400 179 LPC_GPIO_PORT->MPIN[2] = val<<(20-4); // write bits to port
Pokitto 6:72f87b7c7400 180 CLR_MASK_DAC_HI; */
Pokitto 6:72f87b7c7400 181 if (value & 1) SET_DAC0 else CLR_DAC0;
Pokitto 6:72f87b7c7400 182 value >>= 1;
Pokitto 6:72f87b7c7400 183 if (value & 1) SET_DAC1 else CLR_DAC1;
Pokitto 6:72f87b7c7400 184 value >>= 1;
Pokitto 6:72f87b7c7400 185 if (value & 1) SET_DAC2 else CLR_DAC2;
Pokitto 6:72f87b7c7400 186 value >>= 1;
Pokitto 6:72f87b7c7400 187 if (value & 1) SET_DAC3 else CLR_DAC3;
Pokitto 6:72f87b7c7400 188 value >>= 1;
Pokitto 6:72f87b7c7400 189 if (value & 1) SET_DAC4 else CLR_DAC4;
Pokitto 6:72f87b7c7400 190 value >>= 1;
Pokitto 6:72f87b7c7400 191 if (value & 1) SET_DAC5 else CLR_DAC5;
Pokitto 6:72f87b7c7400 192 value >>= 1;
Pokitto 6:72f87b7c7400 193 if (value & 1) SET_DAC6 else CLR_DAC6;
Pokitto 6:72f87b7c7400 194 value >>= 1;
Pokitto 6:72f87b7c7400 195 if (value & 1) SET_DAC7 else CLR_DAC7;
Pokitto 6:72f87b7c7400 196 //CLR_MASK_DAC;
Pokitto 6:72f87b7c7400 197 #endif // BOARDREV
Pokitto 6:72f87b7c7400 198 #endif
Pokitto 6:72f87b7c7400 199 }
Pokitto 6:72f87b7c7400 200
Pokitto 6:72f87b7c7400 201 /** SOUND INIT **/
Pokitto 6:72f87b7c7400 202 void Pokitto::soundInit() {
Pokitto 6:72f87b7c7400 203
Pokitto 6:72f87b7c7400 204 pwmout_init(&audiopwm,POK_AUD_PIN);
Pokitto 6:72f87b7c7400 205 pwmout_period_us(&audiopwm,POK_AUD_PWM_US); //was 31us
Pokitto 6:72f87b7c7400 206 pwmout_write(&audiopwm,0.1f);
Pokitto 6:72f87b7c7400 207
Pokitto 6:72f87b7c7400 208 #if POK_GBSOUND > 0
Pokitto 6:72f87b7c7400 209 /** GAMEBUINO SOUND **/
Pokitto 6:72f87b7c7400 210 audio.attach_us(&audio_IRQ, 1000000/(POK_AUD_FREQ>>0));
Pokitto 6:72f87b7c7400 211 #else
Pokitto 6:72f87b7c7400 212 /** NOT GAMEBUINO SOUND **/
Pokitto 6:72f87b7c7400 213 audio.attach_us(&pokSoundIRQ, 1000000/(POK_AUD_FREQ>>0));
Pokitto 6:72f87b7c7400 214 #endif // POK_GAMEBUINO_SUPPORT
Pokitto 6:72f87b7c7400 215
Pokitto 6:72f87b7c7400 216 //emptySong();
Pokitto 6:72f87b7c7400 217 //emptyOscillators();
Pokitto 6:72f87b7c7400 218 //emptyBlocks();
Pokitto 6:72f87b7c7400 219 //emptyPatches();
Pokitto 6:72f87b7c7400 220 #ifdef TEST_SOUND
Pokitto 6:72f87b7c7400 221 testOsc();
Pokitto 6:72f87b7c7400 222 #endif // TEST_SOUND
Pokitto 6:72f87b7c7400 223 #if POK_BOARDREV == 2
Pokitto 6:72f87b7c7400 224 initHWvolumecontrol();
Pokitto 6:72f87b7c7400 225 #endif
Pokitto 6:72f87b7c7400 226
Pokitto 6:72f87b7c7400 227 }
Pokitto 6:72f87b7c7400 228
Pokitto 6:72f87b7c7400 229
Pokitto 6:72f87b7c7400 230 uint8_t Pokitto::streamPaused() {
Pokitto 6:72f87b7c7400 231 return !streamon;
Pokitto 6:72f87b7c7400 232 }
Pokitto 6:72f87b7c7400 233
Pokitto 6:72f87b7c7400 234 void Pokitto::pauseStream() {
Pokitto 6:72f87b7c7400 235 streamon=0;
Pokitto 6:72f87b7c7400 236 }
Pokitto 6:72f87b7c7400 237
Pokitto 6:72f87b7c7400 238 void Pokitto::playStream() {
Pokitto 6:72f87b7c7400 239 streamon=1;
Pokitto 6:72f87b7c7400 240 }
Pokitto 6:72f87b7c7400 241
Pokitto 6:72f87b7c7400 242
Pokitto 6:72f87b7c7400 243 void pokPauseStream() {
Pokitto 6:72f87b7c7400 244 streamon=0;
Pokitto 6:72f87b7c7400 245 }
Pokitto 6:72f87b7c7400 246
Pokitto 6:72f87b7c7400 247 void pokPlayStream() {
Pokitto 6:72f87b7c7400 248 streamon=1;
Pokitto 6:72f87b7c7400 249 }
Pokitto 6:72f87b7c7400 250
Pokitto 6:72f87b7c7400 251 void pokSoundIRQ() {
Pokitto 6:72f87b7c7400 252 uint8_t output=0;
Pokitto 6:72f87b7c7400 253 #ifndef POK_SIM
Pokitto 6:72f87b7c7400 254 //pwmout_t* obj = &audiopwm;
Pokitto 6:72f87b7c7400 255 #endif
Pokitto 6:72f87b7c7400 256 #if POK_STREAMING_MUSIC > 0
Pokitto 6:72f87b7c7400 257 #if POK_STREAMFREQ_HALVE
Pokitto 6:72f87b7c7400 258 streamstep = 1-streamstep;
Pokitto 6:72f87b7c7400 259 #else
Pokitto 6:72f87b7c7400 260 streamstep = 1;
Pokitto 6:72f87b7c7400 261 #endif // POK_STREAMFREQ_HALVE
Pokitto 6:72f87b7c7400 262 streamstep &= streamon; // streamon is used to toggle SD music streaming on and off
Pokitto 6:72f87b7c7400 263 if (streamstep) {
Pokitto 6:72f87b7c7400 264 output = (*currentPtr++);
Pokitto 6:72f87b7c7400 265 if(streamvol && streamon) {
Pokitto 6:72f87b7c7400 266 output >>= 3-streamvol;
Pokitto 6:72f87b7c7400 267 streambyte = output;
Pokitto 6:72f87b7c7400 268 } else {
Pokitto 6:72f87b7c7400 269 streambyte = 0; // duty cycle
Pokitto 6:72f87b7c7400 270 output = 0;
Pokitto 6:72f87b7c7400 271 }
Pokitto 6:72f87b7c7400 272 if (currentPtr >= endPtr)
Pokitto 6:72f87b7c7400 273 {
Pokitto 6:72f87b7c7400 274 currentBuffer++;
Pokitto 6:72f87b7c7400 275 if (currentBuffer==4) currentBuffer=0;
Pokitto 6:72f87b7c7400 276 currentPtr = buffers[currentBuffer];
Pokitto 6:72f87b7c7400 277 endPtr = currentPtr + BUFFER_SIZE;
Pokitto 6:72f87b7c7400 278 }
Pokitto 6:72f87b7c7400 279 }
Pokitto 6:72f87b7c7400 280 #endif // POK_STREAMING_MUSIC
Pokitto 6:72f87b7c7400 281
Pokitto 6:72f87b7c7400 282 /** DO ADDITIONAL SOUND PROCESSING (NOT STREAM) OF SOUND HERE **/
Pokitto 6:72f87b7c7400 283
Pokitto 6:72f87b7c7400 284 #if POK_ENABLE_SYNTH
Pokitto 6:72f87b7c7400 285 /** if song is being played from sd **/
Pokitto 6:72f87b7c7400 286 if (playing) {
Pokitto 6:72f87b7c7400 287 notetick++;
Pokitto 6:72f87b7c7400 288 updatePlaybackSD(playerpos&7);
Pokitto 6:72f87b7c7400 289 }
Pokitto 6:72f87b7c7400 290 /** oscillators update **/
Pokitto 6:72f87b7c7400 291 osc1.count += osc1.cinc + (osc1.pitchbend >> 4); // counts to 65535 and overflows to zero WAS 8 !
Pokitto 6:72f87b7c7400 292 osc2.count += osc2.cinc + (osc2.pitchbend >> 4); // counts to 65535 and overflows to zero
Pokitto 6:72f87b7c7400 293 osc3.count += osc3.cinc + (osc3.pitchbend >> 4); // counts to 65535 and overflows to zero
Pokitto 6:72f87b7c7400 294 Marr[tick](); // call mixing function
Pokitto 6:72f87b7c7400 295 --tick;
Pokitto 6:72f87b7c7400 296
Pokitto 6:72f87b7c7400 297 /** mixing oscillator output **/
Pokitto 6:72f87b7c7400 298
Pokitto 6:72f87b7c7400 299 uint16_t op = (uint16_t) ((osc1.output)*(osc1.vol>>8))>>9;// >> 2 osc1.vol Marr;
Pokitto 6:72f87b7c7400 300 op += (uint16_t) ((osc2.output)*(osc2.vol>>8))>>9;// >> 2 osc1.vol Marr;
Pokitto 6:72f87b7c7400 301 op += (uint16_t) ((osc3.output)*(osc3.vol>>8))>>9;// >> 2 osc1.vol Marr;
Pokitto 6:72f87b7c7400 302 output = (uint8_t) op;
Pokitto 6:72f87b7c7400 303
Pokitto 6:72f87b7c7400 304 #endif // POK_ENABLE_SYNTH
Pokitto 6:72f87b7c7400 305
Pokitto 6:72f87b7c7400 306 #ifndef POK_SIM
Pokitto 6:72f87b7c7400 307 /** HARDWARE **/
Pokitto 6:72f87b7c7400 308 #if POK_ENABLE_SOUND > 0
Pokitto 6:72f87b7c7400 309 #if POK_STREAMING_MUSIC > 0
Pokitto 6:72f87b7c7400 310 /** sound is enabled, streaming is enabled */
Pokitto 6:72f87b7c7400 311 #if POK_STREAM_TO_DAC > 0
Pokitto 6:72f87b7c7400 312 /** stream goes to DAC */
Pokitto 6:72f87b7c7400 313 #if POK_USE_DAC > 0
Pokitto 6:72f87b7c7400 314 if (streamstep) dac_write((uint8_t)streambyte); // duty cycle
Pokitto 6:72f87b7c7400 315 #endif // POK_USE_DAC
Pokitto 6:72f87b7c7400 316 #else
Pokitto 6:72f87b7c7400 317 /** stream goes to PWM */
Pokitto 6:72f87b7c7400 318 if (streamstep) {
Pokitto 6:72f87b7c7400 319 pwmout_write(&audiopwm,(float)streambyte/(float)255);
Pokitto 6:72f87b7c7400 320 //uint32_t t_on = (uint32_t)(((obj->pwm->MATCHREL0)*streambyte)>>8); //cut out float
Pokitto 6:72f87b7c7400 321 //obj->pwm->MATCHREL1 = t_on;
Pokitto 6:72f87b7c7400 322 //dac_write((uint8_t)streambyte); // duty cycle
Pokitto 6:72f87b7c7400 323 }
Pokitto 6:72f87b7c7400 324 #endif // POK_STREAM_TO_DAC
Pokitto 6:72f87b7c7400 325 #endif // POK_STREAMING_MUSIC
Pokitto 6:72f87b7c7400 326 #if POK_STREAM_TO_DAC > 0
Pokitto 6:72f87b7c7400 327 /** synth goes to PWM */
Pokitto 6:72f87b7c7400 328 pwmout_write(&audiopwm,(float)output/(float)255);
Pokitto 6:72f87b7c7400 329 //uint32_t t_on = (uint32_t)(((obj->pwm->MATCHREL0)*output)>>8); //cut out float
Pokitto 6:72f87b7c7400 330 //obj->pwm->MATCHREL1 = t_on;
Pokitto 6:72f87b7c7400 331 #else
Pokitto 6:72f87b7c7400 332 dac_write((uint8_t)output);
Pokitto 6:72f87b7c7400 333 #endif // decide where synth is output
Pokitto 6:72f87b7c7400 334 soundbyte = (output+streambyte)>>1;
Pokitto 6:72f87b7c7400 335 soundbuf[soundbufindex++]=soundbyte;
Pokitto 6:72f87b7c7400 336 #endif //POK_ENABLE_SOUND
Pokitto 6:72f87b7c7400 337 #endif // HARDWARE
Pokitto 6:72f87b7c7400 338 }
Pokitto 6:72f87b7c7400 339
Pokitto 6:72f87b7c7400 340
Pokitto 6:72f87b7c7400 341 void Pokitto::updateSDAudioStream() {
Pokitto 6:72f87b7c7400 342 if (streamPaused()) return;
Pokitto 6:72f87b7c7400 343
Pokitto 6:72f87b7c7400 344 #if POK_STREAMING_MUSIC > 0
Pokitto 6:72f87b7c7400 345 if (oldBuffer != currentBuffer) {
Pokitto 6:72f87b7c7400 346 if (currentBuffer==0) fileReadBytes(&buffers[3][0],BUFFER_SIZE);
Pokitto 6:72f87b7c7400 347 else if (currentBuffer==1) fileReadBytes(&buffers[0][0],BUFFER_SIZE);
Pokitto 6:72f87b7c7400 348 else if (currentBuffer==2) fileReadBytes(&buffers[1][0],BUFFER_SIZE);
Pokitto 6:72f87b7c7400 349 else fileReadBytes(&buffers[2][0],BUFFER_SIZE);
Pokitto 6:72f87b7c7400 350 oldBuffer = currentBuffer;
Pokitto 6:72f87b7c7400 351 streamcounter += BUFFER_SIZE;
Pokitto 6:72f87b7c7400 352 } else return;
Pokitto 6:72f87b7c7400 353
Pokitto 6:72f87b7c7400 354 #ifndef POK_SIM
Pokitto 6:72f87b7c7400 355 if ( streamcounter > fs.fsize - (BUFFER_SIZE*6)) {
Pokitto 6:72f87b7c7400 356 #else
Pokitto 6:72f87b7c7400 357 if ( streamcounter > getFileLength() - (BUFFER_SIZE*6)) {
Pokitto 6:72f87b7c7400 358 #endif
Pokitto 6:72f87b7c7400 359 streamcounter=0;
Pokitto 6:72f87b7c7400 360 #if POK_STREAM_LOOP
Pokitto 6:72f87b7c7400 361 fileRewind();
Pokitto 6:72f87b7c7400 362 #else
Pokitto 6:72f87b7c7400 363 pokPauseStream();
Pokitto 6:72f87b7c7400 364 #endif
Pokitto 6:72f87b7c7400 365 }
Pokitto 6:72f87b7c7400 366 #endif
Pokitto 6:72f87b7c7400 367 }
Pokitto 6:72f87b7c7400 368
Pokitto 6:72f87b7c7400 369
Pokitto 6:72f87b7c7400 370 #endif // POK_ENABLE_SOUND
Pokitto 6:72f87b7c7400 371
Pokitto 6:72f87b7c7400 372