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562 lines
17 KiB
562 lines
17 KiB
/*
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MicroMDAEPiano
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MicroDexed is a port of the Dexed sound engine
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(https://github.com/asb2m10/dexed) for the Teensy-3.5/3.6 with audio shield.
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Dexed ist heavily based on https://github.com/google/music-synthesizer-for-android
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(c)2018 H. Wirtz <wirtz@parasitstudio.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <Audio.h>
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#include <Wire.h>
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#include <SPI.h>
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#include <MIDI.h>
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#include <EEPROM.h>
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#include <limits.h>
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#include "mdaEPiano.h"
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//#include "mdaEPianoData.h"
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#include "mdaEPianoDataXfade.h"
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#if defined(USBCON)
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#include <midi_UsbTransport.h>
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#endif
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#ifdef USE_ONBOARD_USB_HOST
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#include <USBHost_t36.h>
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#endif
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#ifndef MASTER_KEY_MIDI // selecting sounds by encoder, button and display
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#include <Bounce.h>
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#include <Encoder.h>
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#include "LiquidCrystalPlus_I2C.h"
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#endif
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// [I2C] SCL: Pin 19, SDA: Pin 18 (https://www.pjrc.com/teensy/td_libs_Wire.html)
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#define LCD_I2C_ADDRESS 0x27
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#define LCD_CHARS 16
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#define LCD_LINES 2
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LiquidCrystalPlus_I2C lcd(LCD_I2C_ADDRESS, LCD_CHARS, LCD_LINES);
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Encoder enc1(ENC1_PIN_A, ENC1_PIN_B);
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Bounce but1 = Bounce(BUT1_PIN, 10); // 10 ms debounce
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// GUItool: begin automatically generated code
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AudioPlayQueue queue_r; //xy=494,404
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AudioPlayQueue queue_l; //xy=494,404
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AudioAnalyzePeak peak_r; //xy=695,491
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AudioAnalyzePeak peak_l; //xy=695,491
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AudioConnection patchCord0(queue_l, peak_l);
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AudioConnection patchCord1(queue_r, peak_r);
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#ifdef TEENSY_AUDIO_BOARD
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AudioOutputI2S i2s1; //xy=1072,364
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AudioConnection patchCord2(queue_l, 0, i2s1, 0);
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AudioConnection patchCord3(queue_r, 0, i2s1, 1);
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AudioControlSGTL5000 sgtl5000_1; //xy=700,536
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#else
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AudioOutputPT8211 pt8211_1; //xy=1079,320
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AudioAmplifier volume_r; //xy=818,370
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AudioAmplifier volume_l; //xy=818,411
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AudioConnection patchCord2(queue_l, volume_r);
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AudioConnection patchCord3(queue_r, volume_l);
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AudioConnection patchCord4(volume_r, peak_r);
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AudioConnection patchCord5(volume_l, peak_l);
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AudioConnection patchCord6(volume_r, 0, pt8211_1, 1);
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AudioConnection patchCord7(volume_l, 0, pt8211_1, 0);
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#endif
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// GUItool: end automatically generated code
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mdaEPiano* ep;
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uint8_t midi_channel = DEFAULT_MIDI_CHANNEL;
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uint32_t xrun = 0;
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uint32_t overload = 0;
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uint32_t peak = 0;
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uint16_t render_time_max = 0;
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float vol = VOLUME;
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float vol_right = 1.0;
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float vol_left = 1.0;
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elapsedMicros fill_audio_buffer;
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const uint16_t audio_block_time_us = 1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLES);
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#ifdef SHOW_CPU_LOAD_MSEC
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elapsedMillis cpu_mem_millis;
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#endif
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#ifdef MIDI_DEVICE
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MIDI_CREATE_INSTANCE(HardwareSerial, MIDI_DEVICE, midi_serial);
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#endif
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#ifdef USE_ONBOARD_USB_HOST
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USBHost usb_host;
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MIDIDevice midi_usb(usb_host);
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#endif
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#if defined(USBCON)
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static const unsigned sUsbTransportBufferSize = 16;
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typedef midi::UsbTransport<sUsbTransportBufferSize> UsbTransport;
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UsbTransport sUsbTransport;
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MIDI_CREATE_INSTANCE(UsbTransport, sUsbTransport, midi_onboard_usb);
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#endif
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#ifdef TEST_NOTE
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IntervalTimer sched_note_on;
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IntervalTimer sched_note_off;
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uint8_t _voice_counter = 0;
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#endif
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enum MDA_EP_PARAM { DECAY, RELEASE, HARDNESS, TREBLE, PAN_TREM, LFO_RATE, VELOCITY_SENSE, STEREO, MAX_POLY, TUNE, DETUNE, OVERDRIVE };
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void setup()
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{
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//while (!Serial) ; // wait for Arduino Serial Monitor
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Serial.begin(SERIAL_SPEED);
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delay(220);
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lcd.init();
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lcd.blink_off();
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lcd.cursor_off();
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lcd.backlight();
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lcd.noAutoscroll();
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lcd.clear();
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lcd.display();
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lcd.show(0, 0, 20, " MicroMDAEPiano");
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lcd.show(1, 0, 16, "(c)parasiTstudio");
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enc1.write(INITIAL_ENC1_VALUE);
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Serial.println(F("MicroMDAEPiano based on https://sourceforge.net/projects/mda-vst"));
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Serial.println(F("(c)2018 H. Wirtz <wirtz@parasitstudio.de>"));
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Serial.println(F("https://about.teahub.io/dcoredump/MicroMDAEpiano"));
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Serial.print(F("Data in PROGMEM: "));
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Serial.print(sizeof(epianoDataXfade), DEC);
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Serial.println(F(" bytes"));
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Serial.println();
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Serial.println(F("<setup start>"));
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ep = new mdaEPiano();
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initial_values_from_eeprom();
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// start up USB host
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#ifdef USE_ONBOARD_USB_HOST
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usb_host.begin();
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Serial.println(F("USB-MIDI enabled."));
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#endif
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// check for onboard USB-MIDI
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#if defined(USBCON)
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midi_onboard_usb.begin();
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Serial.println(F("Onboard USB-MIDI enabled."));
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#endif
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#ifdef MIDI_DEVICE
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// Start serial MIDI
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midi_serial.begin(DEFAULT_MIDI_CHANNEL);
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Serial.println(F("Serial MIDI enabled"));
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#endif
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// start audio card
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AudioMemory(AUDIO_MEM);
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#ifdef TEENSY_AUDIO_BOARD
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sgtl5000_1.enable();
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//sgtl5000_1.dacVolumeRamp();
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sgtl5000_1.dacVolumeRampLinear();
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sgtl5000_1.unmuteHeadphone();
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sgtl5000_1.unmuteLineout();
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sgtl5000_1.autoVolumeDisable(); // turn off AGC
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sgtl5000_1.volume(1.0, 1.0);
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#endif
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set_volume(vol, vol_left, vol_right);
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#if defined (DEBUG) && defined (SHOW_CPU_LOAD_MSEC)
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// Initialize processor and memory measurements
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AudioProcessorUsageMaxReset();
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AudioMemoryUsageMaxReset();
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#endif
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Serial.print(F("AUDIO_BLOCK_SAMPLES="));
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Serial.print(AUDIO_BLOCK_SAMPLES);
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Serial.print(F(" (Time per block="));
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Serial.print(1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLES));
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Serial.println(F("ms)"));
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#ifdef TEST_NOTE
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Serial.println(F("MIDI test enabled"));
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sched_note_on.begin(note_on, 2000000);
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sched_note_off.begin(note_off, 6333333);
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#endif
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ep->setParameter(HARDNESS, 0.7);
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ep->setParameter(TREBLE, 0.85);
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ep->setParameter(DETUNE, 0.1);
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ep->setParameter(VELOCITY_SENSE, 0.2);
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ep->setParameter(STEREO, 0.7);
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ep->setParameter(MAX_POLY, 1.0);
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ep->setParameter(OVERDRIVE, 0.3);
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// DECAY,RELEASE,HARDNESS,TREBLE,PAN_TREM,LFO_RATE,VELOCITY_SENSE,STEREO,MAX_POLY,TUNE,DETUNE,OVERDRIVE
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Serial.println(F("<setup end>"));
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#if defined (DEBUG) && defined (SHOW_CPU_LOAD_MSEC)
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show_cpu_and_mem_usage();
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cpu_mem_millis = 0;
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#endif
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}
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void loop()
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{
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int16_t* audio_buffer_r; // pointer to AUDIO_BLOCK_SAMPLES * sizeof(int16_t)
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int16_t* audio_buffer_l; // pointer to AUDIO_BLOCK_SAMPLES * sizeof(int16_t)
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const uint16_t audio_block_time_ms = 1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLES);
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// Main sound calculation
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if (queue_r.available() && queue_l.available() && fill_audio_buffer > audio_block_time_us - 10)
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{
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fill_audio_buffer = 0;
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audio_buffer_r = queue_r.getBuffer();
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audio_buffer_l = queue_l.getBuffer();
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#if defined (DEBUG) && defined (SHOW_CPU_LOAD_MSEC)
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if (cpu_mem_millis > SHOW_CPU_LOAD_MSEC)
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{
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show_cpu_and_mem_usage();
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cpu_mem_millis = 0;
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}
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#endif
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audio_buffer_r = queue_r.getBuffer();
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if (audio_buffer_r == NULL)
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{
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Serial.println(F("E: audio_buffer_r allocation problems!"));
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}
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audio_buffer_l = queue_l.getBuffer();
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if (audio_buffer_l == NULL)
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{
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Serial.println(F("E: audio_buffer_l allocation problems!"));
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}
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elapsedMicros t1;
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ep->process(audio_buffer_l, audio_buffer_r);
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uint32_t t2 = t1;
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if (t2 > audio_block_time_ms) // everything greater 2.9ms is a buffer underrun!
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xrun++;
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if (t2 > render_time_max)
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render_time_max = t2;
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if (peak_r.available())
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{
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if (peak_r.read() > 0.99)
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peak++;
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}
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if (peak_l.available())
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{
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if (peak_l.read() > 0.99)
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peak++;
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}
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#ifndef TEENSY_AUDIO_BOARD
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for (uint8_t i = 0; i < AUDIO_BLOCK_SAMPLES; i++)
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{
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audio_buffer_r[i] *= vol;
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audio_buffer_l[i] *= vol;
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}
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#endif
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queue_r.playBuffer();
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queue_l.playBuffer();
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}
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handle_input();
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}
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void handle_input(void)
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{
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#ifdef USE_ONBOARD_USB_HOST
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usb_host.Task();
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while (midi_usb.read())
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{
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#ifdef DEBUG
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Serial.println(F("[MIDI-USB]"));
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#endif
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/* if (midi_usb.getType() >= 0xf0) // SysEX
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{
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handle_sysex_parameter(midi_usb.getSysExArray(), midi_usb.getSysExArrayLength());
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}
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else */ if (queue_midi_event(midi_usb.getType(), midi_usb.getData1(), midi_usb.getData2()))
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return;
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}
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#endif
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#ifdef MIDI_DEVICE
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while (midi_serial.read())
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{
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#ifdef DEBUG
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Serial.print(F("[MIDI-Serial] "));
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#endif
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/* if (midi_serial.getType() >= 0xf0) // SYSEX
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{
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handle_sysex_parameter(midi_serial.getSysExArray(), midi_serial.getSysExArrayLength());
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}
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else */ if (queue_midi_event(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2()))
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return;
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}
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#endif
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int enc1_val = enc1.read();
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if (but1.update())
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;
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// place handling of encoder and showing values on lcd here
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}
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#ifdef DEBUG
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#ifdef SHOW_MIDI_EVENT
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void print_midi_event(uint8_t type, uint8_t data1, uint8_t data2)
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{
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Serial.print(F("MIDI-Channel: "));
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if (midi_channel == MIDI_CHANNEL_OMNI)
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Serial.print(F("OMNI"));
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else
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Serial.print(midi_channel, DEC);
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Serial.print(F(", MIDI event type: 0x"));
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if (type < 16)
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Serial.print(F("0"));
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Serial.print(type, HEX);
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Serial.print(F(", data1: "));
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Serial.print(data1, DEC);
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Serial.print(F(", data2: "));
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Serial.println(data2, DEC);
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}
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#endif
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#endif
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bool queue_midi_event(uint8_t type, uint8_t data1, uint8_t data2)
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{
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bool ret = false;
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#if defined(DEBUG) && defined(SHOW_MIDI_EVENT)
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print_midi_event(type, data1, data2);
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#endif
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// check for MIDI channel
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if (midi_channel != MIDI_CHANNEL_OMNI)
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{
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uint8_t c = type & 0x0f;
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if (c != midi_channel)
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{
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#ifdef DEBUG
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Serial.print(F("Ignoring MIDI data on channel "));
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Serial.print(c);
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Serial.print(F("(listening on "));
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Serial.print(midi_channel);
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Serial.println(F(")"));
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#endif
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return (false);
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}
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}
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// now throw away the MIDI channel information
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type &= 0xf0;
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ret = ep->processMidiMessage(type, data1, data2);
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return (ret);
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}
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void set_volume(float v, float vr, float vl)
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{
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vol = v;
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vol_right = vr;
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vol_left = vl;
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EEPROM.update(EEPROM_OFFSET + EEPROM_MASTER_VOLUME_ADDR, uint8_t(vol * UCHAR_MAX));
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EEPROM.update(EEPROM_OFFSET + EEPROM_VOLUME_RIGHT_ADDR, uint8_t(vol_right * UCHAR_MAX));
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EEPROM.update(EEPROM_OFFSET + EEPROM_VOLUME_LEFT_ADDR, uint8_t(vol_left * UCHAR_MAX));
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update_eeprom_checksum();
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#ifdef DEBUG
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uint8_t tmp;
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Serial.print(F("Setting volume: VOL="));
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Serial.print(v, DEC);
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Serial.print(F("["));
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tmp = EEPROM.read(EEPROM_OFFSET + EEPROM_MASTER_VOLUME_ADDR);
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Serial.print(tmp, DEC);
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Serial.print(F("/"));
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Serial.print(float(tmp) / UCHAR_MAX, DEC);
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Serial.print(F("] VOL_L="));
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Serial.print(vl, DEC);
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Serial.print(F("["));
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tmp = EEPROM.read(EEPROM_OFFSET + EEPROM_VOLUME_LEFT_ADDR);
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Serial.print(tmp, DEC);
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Serial.print(F("/"));
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Serial.print(float(tmp) / UCHAR_MAX, DEC);
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Serial.print(F("] VOL_R="));
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Serial.print(vr, DEC);
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Serial.print(F("["));
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tmp = EEPROM.read(EEPROM_OFFSET + EEPROM_VOLUME_RIGHT_ADDR);
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Serial.print(tmp, DEC);
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Serial.print(F("/"));
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Serial.print(float(tmp) / UCHAR_MAX, DEC);
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Serial.println(F("]"));
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#endif
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#ifdef TEENSY_AUDIO_BOARD
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sgtl5000_1.dacVolume(vol * vol_left, vol * vol_right);
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#else
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volume_r.gain(vr);
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volume_l.gain(vl);
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#endif
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}
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void initial_values_from_eeprom(void)
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{
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uint32_t crc_eeprom = read_eeprom_checksum();
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uint32_t crc = eeprom_crc32(EEPROM_OFFSET, EEPROM_DATA_LENGTH);
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#ifdef DEBUG
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Serial.print(F("EEPROM checksum: 0x"));
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Serial.print(crc_eeprom, HEX);
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Serial.print(F(" / 0x"));
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Serial.print(crc, HEX);
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#endif
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if (crc_eeprom != crc)
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{
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#ifdef DEBUG
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Serial.print(F(" - mismatch -> initializing EEPROM!"));
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#endif
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EEPROM.update(EEPROM_OFFSET + EEPROM_MASTER_VOLUME_ADDR, uint8_t(vol * UCHAR_MAX));
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EEPROM.update(EEPROM_OFFSET + EEPROM_VOLUME_RIGHT_ADDR, uint8_t(vol_right * UCHAR_MAX));
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EEPROM.update(EEPROM_OFFSET + EEPROM_VOLUME_LEFT_ADDR, uint8_t(vol_left * UCHAR_MAX));
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update_eeprom_checksum();
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}
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else
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{
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vol = float(EEPROM.read(EEPROM_OFFSET + EEPROM_MASTER_VOLUME_ADDR)) / UCHAR_MAX;
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vol_right = float(EEPROM.read(EEPROM_OFFSET + EEPROM_VOLUME_RIGHT_ADDR)) / UCHAR_MAX;
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vol_left = float(EEPROM.read(EEPROM_OFFSET + EEPROM_VOLUME_LEFT_ADDR)) / UCHAR_MAX;
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}
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#ifdef DEBUG
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Serial.println();
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#endif
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}
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uint32_t read_eeprom_checksum(void)
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{
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return (EEPROM.read(EEPROM_CRC32_ADDR) << 24 | EEPROM.read(EEPROM_CRC32_ADDR + 1) << 16 | EEPROM.read(EEPROM_CRC32_ADDR + 2) << 8 | EEPROM.read(EEPROM_CRC32_ADDR + 3));
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}
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void update_eeprom_checksum(void)
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{
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write_eeprom_checksum(eeprom_crc32(EEPROM_OFFSET, EEPROM_DATA_LENGTH)); // recalculate crc and write to eeprom
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}
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void write_eeprom_checksum(uint32_t crc)
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{
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EEPROM.update(EEPROM_CRC32_ADDR, (crc & 0xff000000) >> 24);
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EEPROM.update(EEPROM_CRC32_ADDR + 1, (crc & 0x00ff0000) >> 16);
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EEPROM.update(EEPROM_CRC32_ADDR + 2, (crc & 0x0000ff00) >> 8);
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EEPROM.update(EEPROM_CRC32_ADDR + 3, crc & 0x000000ff);
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}
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uint32_t eeprom_crc32(uint16_t calc_start, uint16_t calc_bytes) // base code from https://www.arduino.cc/en/Tutorial/EEPROMCrc
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{
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const uint32_t crc_table[16] =
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{
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0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
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0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
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0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
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0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
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};
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uint32_t crc = ~0L;
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if (calc_start + calc_bytes > EEPROM.length())
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calc_bytes = EEPROM.length() - calc_start;
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for (uint16_t index = calc_start ; index < (calc_start + calc_bytes) ; ++index)
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{
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crc = crc_table[(crc ^ EEPROM[index]) & 0x0f] ^ (crc >> 4);
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crc = crc_table[(crc ^ (EEPROM[index] >> 4)) & 0x0f] ^ (crc >> 4);
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crc = ~crc;
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}
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return (crc);
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}
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#if defined (DEBUG) && defined (SHOW_CPU_LOAD_MSEC)
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void show_cpu_and_mem_usage(void)
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{
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Serial.print(F("CPU: "));
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Serial.print(AudioProcessorUsage(), DEC);
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Serial.print(F(" CPU MAX: "));
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Serial.print(AudioProcessorUsageMax(), DEC);
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Serial.print(F(" MEM: "));
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Serial.print(AudioMemoryUsage(), DEC);
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Serial.print(F(" MEM MAX: "));
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Serial.print(AudioMemoryUsageMax(), DEC);
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Serial.print(F(" RENDER_TIME_MAX: "));
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Serial.print(render_time_max, DEC);
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Serial.print(F(" XRUN: "));
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Serial.print(xrun, DEC);
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Serial.print(F(" OVERLOAD: "));
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Serial.print(overload, DEC);
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Serial.print(F(" PEAK: "));
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Serial.print(peak, DEC);
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Serial.println();
|
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AudioProcessorUsageMaxReset();
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|
AudioMemoryUsageMaxReset();
|
|
render_time_max = 0;
|
|
}
|
|
#endif
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|
|
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|
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#ifdef TEST_NOTE
|
|
void note_on(void)
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|
{
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|
randomSeed(analogRead(A0));
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queue_midi_event(0x90, TEST_NOTE, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 1
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queue_midi_event(0x90, TEST_NOTE + 5, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 2
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queue_midi_event(0x90, TEST_NOTE + 8, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 3
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queue_midi_event(0x90, TEST_NOTE + 12, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 4
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queue_midi_event(0x90, TEST_NOTE + 17, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 5
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queue_midi_event(0x90, TEST_NOTE + 20, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 6
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queue_midi_event(0x90, TEST_NOTE + 24, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 7
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queue_midi_event(0x90, TEST_NOTE + 29, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 8
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queue_midi_event(0x90, TEST_NOTE + 32, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 9
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queue_midi_event(0x90, TEST_NOTE + 37, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 10
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queue_midi_event(0x90, TEST_NOTE + 40, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 11
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queue_midi_event(0x90, TEST_NOTE + 46, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 12
|
|
queue_midi_event(0x90, TEST_NOTE + 49, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 13
|
|
queue_midi_event(0x90, TEST_NOTE + 52, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 14
|
|
queue_midi_event(0x90, TEST_NOTE + 57, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 15
|
|
queue_midi_event(0x90, TEST_NOTE + 60, random(TEST_VEL_MIN, TEST_VEL_MAX)); // 16
|
|
}
|
|
|
|
void note_off(void)
|
|
{
|
|
queue_midi_event(0x80, TEST_NOTE, 0); // 1
|
|
queue_midi_event(0x80, TEST_NOTE + 5, 0); // 2
|
|
queue_midi_event(0x80, TEST_NOTE + 8, 0); // 3
|
|
queue_midi_event(0x80, TEST_NOTE + 12, 0); // 4
|
|
queue_midi_event(0x80, TEST_NOTE + 17, 0); // 5
|
|
queue_midi_event(0x80, TEST_NOTE + 20, 0); // 6
|
|
queue_midi_event(0x80, TEST_NOTE + 24, 0); // 7
|
|
queue_midi_event(0x80, TEST_NOTE + 29, 0); // 8
|
|
queue_midi_event(0x80, TEST_NOTE + 32, 0); // 9
|
|
queue_midi_event(0x80, TEST_NOTE + 37, 0); // 10
|
|
queue_midi_event(0x80, TEST_NOTE + 40, 0); // 11
|
|
queue_midi_event(0x80, TEST_NOTE + 46, 0); // 12
|
|
queue_midi_event(0x80, TEST_NOTE + 49, 0); // 13
|
|
queue_midi_event(0x80, TEST_NOTE + 52, 0); // 14
|
|
queue_midi_event(0x80, TEST_NOTE + 57, 0); // 15
|
|
queue_midi_event(0x80, TEST_NOTE + 60, 0); // 16
|
|
}
|
|
#endif
|
|
|