You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
297 lines
9.0 KiB
297 lines
9.0 KiB
/*
|
|
MicroDexed
|
|
|
|
MicroDexed is a port of the Dexed sound engine
|
|
(https://github.com/asb2m10/dexed) for the Teensy-3.5/3.6 with audio shield.
|
|
Dexed ist heavily based on https://github.com/google/music-synthesizer-for-android
|
|
|
|
(c)2018,2019 H. Wirtz <wirtz@parasitstudio.de>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
*/
|
|
|
|
#ifndef CONFIG_H_INCLUDED
|
|
#define CONFIG_H_INCLUDED
|
|
|
|
#include "midinotes.h"
|
|
|
|
// ATTENTION! For better latency you have to redefine AUDIO_BLOCK_SAMPLES from
|
|
// 128 to 64 in <ARDUINO-IDE-DIR>/cores/teensy3/AudioStream.h
|
|
|
|
// If you want to test the system with Linux and withous any keyboard and/or audio equipment, you can do the following:
|
|
// 1. In Arduino-IDE enable "Tools->USB-Type->Serial + MIDI + Audio"
|
|
// 2. Build the firmware with "MIDI_DEVICE_USB" enabled in config.h.
|
|
// 3. Afterconnecting to a Linux system there should be a MIDI an audio device available that is called "MicroMDAEPiano", so you can start the following:
|
|
// $ aplaymidi -p 20:0 <MIDI-File> # e.g. test.mid
|
|
// $ arecord -f cd -Dhw:1,0 /tmp/bla.wav
|
|
|
|
#define VERSION "0.9.7"
|
|
|
|
//*************************************************************************************************
|
|
//* DEVICE SETTINGS
|
|
//*************************************************************************************************
|
|
|
|
// MIDI
|
|
//#define MIDI_DEVICE_DIN Serial1
|
|
#define MIDI_DEVICE_USB 1
|
|
#define MIDI_DEVICE_USB_HOST 1
|
|
#define MIDI_DEVICE_NUMBER 0
|
|
|
|
// AUDIO
|
|
// If nothing is defined Teensy internal DAC is used as audio output device!
|
|
// Left and right channel audio signal is presented on pins A21 and A22.
|
|
//#define TEENSY_DAC
|
|
//#define TEENSY_DAC_SYMMETRIC
|
|
//#define TEENSY_AUDIO_BOARD
|
|
//#define TGA_AUDIO_BOARD
|
|
#define PT8211_AUDIO
|
|
|
|
//*************************************************************************************************
|
|
//* MIDI SETTINGS
|
|
//*************************************************************************************************
|
|
|
|
#define DEFAULT_MIDI_CHANNEL MIDI_CHANNEL_OMNI
|
|
#define MIDI_MERGE_THRU 1
|
|
#define DEFAULT_SYSEXBANK 0
|
|
#define DEFAULT_SYSEXSOUND 0
|
|
|
|
//*************************************************************************************************
|
|
//* DEXED AND EFECTS SETTINGS
|
|
//*************************************************************************************************
|
|
#define DEXED_ENGINE DEXED_ENGINE_MODERN // DEXED_ENGINE_MARKI // DEXED_ENGINE_OPL
|
|
|
|
// CHORUS parameters
|
|
#define MOD_DELAY_SAMPLE_BUFFER int32_t(TIME_MS2SAMPLES(20.0)) // 20.0 ms delay buffer.
|
|
#define MOD_WAVEFORM WAVEFORM_TRIANGLE // WAVEFORM_SINE WAVEFORM_TRIANGLE WAVEFORM_SAWTOOTH WAVEFORM_SAWTOOTH_REVERSE
|
|
#define MOD_FILTER_OUTPUT MOD_LINKWITZ_RILEY_FILTER_OUTPUT // MOD_LINKWITZ_RILEY_FILTER_OUTPUT MOD_BUTTERWORTH_FILTER_OUTPUT MOD_NO_FILTER_OUTPUT
|
|
#define MOD_FILTER_CUTOFF_HZ 3000
|
|
#define USE_REVERB 1
|
|
|
|
//*************************************************************************************************
|
|
//* AUDIO SETTINGS
|
|
//*************************************************************************************************
|
|
// https://rechneronline.de/funktionsgraphen/
|
|
#define VOLUME 0.8
|
|
#define VOLUME_CURVE 0.07
|
|
#ifndef TEENSY_AUDIO_BOARD
|
|
#if AUDIO_BLOCK_SAMPLES == 64
|
|
#define AUDIO_MEM 450
|
|
#else
|
|
#define AUDIO_MEM 225
|
|
#endif
|
|
#define DELAY_MAX_TIME 600
|
|
#define REDUCE_LOUDNESS 1
|
|
#else
|
|
#if AUDIO_BLOCK_SAMPLES == 64
|
|
#define AUDIO_MEM 900
|
|
#else
|
|
#define AUDIO_MEM 450
|
|
#endif
|
|
#define DELAY_MAX_TIME 1200
|
|
#define REDUCE_LOUDNESS 1
|
|
#endif
|
|
#define SAMPLE_RATE 44100
|
|
#define SOFTEN_VALUE_CHANGE_STEPS 5
|
|
|
|
//*************************************************************************************************
|
|
//* UI
|
|
//*************************************************************************************************
|
|
#define ENABLE_LCD_UI 1
|
|
#define LCD_I2C_ADDRESS 0x27
|
|
#define LCD_cols 16
|
|
#define LCD_rows 2
|
|
#define CONTROL_RATE_MS 50
|
|
|
|
#define BACK_FROM_VOLUME_MS 1000
|
|
|
|
//*************************************************************************************************
|
|
//* DEBUG OUTPUT SETTINGS
|
|
//*************************************************************************************************
|
|
#define DEBUG 1
|
|
#define SERIAL_SPEED 38400
|
|
#define SHOW_XRUN 1
|
|
#define SHOW_CPU_LOAD_MSEC 5000
|
|
|
|
//*************************************************************************************************
|
|
//* HARDWARE SETTINGS
|
|
//*************************************************************************************************
|
|
|
|
// Teensy Audio Shield:
|
|
//#define SDCARD_CS_PIN 10
|
|
//#define SDCARD_MOSI_PIN 7
|
|
//#define SDCARD_SCK_PIN 14
|
|
#define SGTL5000_LINEOUT_LEVEL 29
|
|
// Teensy 3.5 & 3.6 SD card
|
|
#define SDCARD_CS_PIN BUILTIN_SDCARD
|
|
#define SDCARD_MOSI_PIN 11 // not actually used
|
|
#define SDCARD_SCK_PIN 13 // not actually used
|
|
|
|
// Encoder with button
|
|
#define ENC_FILTER_RES_STEPS 100
|
|
#define ENC_FILTER_CUT_STEPS 100
|
|
#define ENC_DELAY_TIME_STEPS 50
|
|
#define ENC_DELAY_FB_STEPS 35
|
|
#define ENC_DELAY_VOLUME_STEPS 50
|
|
#define ENC_VOLUME_STEPS 20
|
|
#define NUM_ENCODER 2
|
|
#define ENC_L_PIN_A 3
|
|
#define ENC_L_PIN_B 2
|
|
#define BUT_L_PIN 4
|
|
#define ENC_R_PIN_A 28
|
|
#define ENC_R_PIN_B 29
|
|
#define BUT_R_PIN 30
|
|
#define BUT_DEBOUNCE_MS 20
|
|
#define LONG_BUTTON_PRESS 500
|
|
|
|
// LCD Display
|
|
#define I2C_DISPLAY 1
|
|
// [I2C] SCL: Pin 19, SDA: Pin 18 (https://www.pjrc.com/teensy/td_libs_Wire.html)
|
|
//#define LCD_GFX 1
|
|
#define LCD_I2C_ADDRESS 0x27
|
|
#define LCD_CHARS 16
|
|
#define LCD_LINES 2
|
|
|
|
// Internal timer
|
|
#define AUTOSTORE_MS 5000
|
|
#define VOICE_SELECTION_MS 2000
|
|
|
|
// EEPROM address
|
|
#define EEPROM_START_ADDRESS 0
|
|
|
|
#define MAX_BANKS 100
|
|
#define MAX_VOICES 32 // voices per bank
|
|
#define BANK_NAME_LEN 13 // FAT12 filenames (plus '\0')
|
|
#define VOICE_NAME_LEN 11 // 10 (plus '\0')
|
|
|
|
//*************************************************************************************************
|
|
//* DO NO CHANGE ANYTHING BEYOND IF YOU DON'T KNOW WHAT YOU ARE DOING !!!
|
|
//*************************************************************************************************
|
|
#define NUM_DEXED 1
|
|
|
|
// MIDI
|
|
#ifdef MIDI_DEVICE_USB
|
|
#define USBCON 1
|
|
#endif
|
|
#if defined(__MK66FX1M0__) // Teensy-3.6
|
|
// Teensy-3.6 settings
|
|
#define MIDI_DEVICE_USB_HOST 1
|
|
#define MAX_NOTES 16
|
|
#else
|
|
// Teensy-3.5 settings
|
|
#undef MIDI_DEVICE_USB_HOST
|
|
#define MAX_NOTES 11
|
|
#undef USE_REVERB
|
|
#endif
|
|
#define TRANSPOSE_FIX 24
|
|
|
|
// Audio
|
|
#ifdef TGA_AUDIO_BOARD
|
|
#define REDUCE_LOUDNESS 2
|
|
#endif
|
|
|
|
// Some optimizations
|
|
#define USE_TEENSY_DSP 1
|
|
#define SUM_UP_AS_INT 1
|
|
|
|
/* HELPER MACROS */
|
|
#define TIME_MS2SAMPLES(x) floor(uint32_t(x) * AUDIO_SAMPLE_RATE / 1000)
|
|
#define SAMPLES2TIME_MS(x) float(uint32_t(x) * 1000 / AUDIO_SAMPLE_RATE)
|
|
// Modulated delay options
|
|
#define MOD_NO_FILTER_OUTPUT 0
|
|
#define MOD_BUTTERWORTH_FILTER_OUTPUT 1
|
|
#define MOD_LINKWITZ_RILEY_FILTER_OUTPUT 2
|
|
|
|
#define MONO_MIN 0
|
|
#define MONO_MAX 1
|
|
#define MONO_DEFAULT 0
|
|
|
|
#define MIDI_CHANNEL_MIN MIDI_CHANNEL_OMNI
|
|
#define MIDI_CHANNEL_MAX 16
|
|
#define MIDI_CHANNEL_DEFAULT MIDI_CHANNEL_OMNI
|
|
|
|
#define REVERB_ROOMSIZE_MIN 0
|
|
#define REVERB_ROOMSIZE_MAX 100
|
|
#define REVERB_ROOMSIZE_DEFAULT 0
|
|
|
|
#define REVERB_DAMPING_MIN 0
|
|
#define REVERB_DAMPING_MAX 100
|
|
#define REVERB_DAMPING_DEFAULT 0
|
|
|
|
#define REVERB_LEVEL_MIN 0
|
|
#define REVERB_LEVEL_MAX 100
|
|
#define REVERB_LEVEL_DEFAULT 0
|
|
|
|
#define CHORUS_FREQUENCY_MIN 0
|
|
#define CHORUS_FREQUENCY_MAX 100
|
|
#define CHORUS_FREQUENCY_DEFAULT 0
|
|
|
|
#define CHORUS_WAVEFORM_MIN 0
|
|
#define CHORUS_WAVEFORM_MAX 1
|
|
#define CHORUS_WAVEFORM_DEFAULT 0
|
|
|
|
#define CHORUS_DEPTH_MIN 0
|
|
#define CHORUS_DEPTH_MAX 100
|
|
#define CHORUS_DEPTH_DEFAULT 0
|
|
|
|
#define CHORUS_LEVEL_MIN 0
|
|
#define CHORUS_LEVEL_MAX 100
|
|
#define CHORUS_LEVEL_DEFAULT 0
|
|
|
|
#define DELAY_TIME_MIN 0
|
|
#define DELAY_TIME_MAX DELAY_MAX_TIME/10
|
|
#define DELAY_TIME_DEFAULT 0
|
|
|
|
#define DELAY_FEEDBACK_MIN 0
|
|
#define DELAY_FEEDBACK_MAX 100
|
|
#define DELAY_FEEDBACK_DEFAULT 0
|
|
|
|
#define DELAY_LEVEL_MIN 0
|
|
#define DELAY_LEVEL_MAX 100
|
|
#define DELAY_LEVEL_DEFAULT 0
|
|
|
|
// struct for holding the current configuration
|
|
struct config_t {
|
|
uint32_t checksum;
|
|
uint8_t bank;
|
|
uint8_t voice;
|
|
float vol;
|
|
float pan;
|
|
uint8_t mono;
|
|
uint8_t midi_channel;
|
|
uint8_t reverb_roomsize;
|
|
uint8_t reverb_damping;
|
|
uint8_t reverb_level;
|
|
uint8_t chorus_frequency;
|
|
uint8_t chorus_waveform;
|
|
uint8_t chorus_depth;
|
|
uint8_t chorus_level;
|
|
uint8_t delay_time;
|
|
uint8_t delay_feedback;
|
|
uint8_t delay_level;
|
|
};
|
|
|
|
// struct for smoothing value changes
|
|
struct value_change_t {
|
|
float diff;
|
|
uint16_t steps;
|
|
};
|
|
|
|
inline float mapfloat(float val, float in_min, float in_max, float out_min, float out_max)
|
|
{
|
|
return (val - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
|
|
}
|
|
|
|
#endif // CONFIG_H_INCLUDED
|
|
|