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MicroDexed/MicroDexed.ino

143 lines
3.6 KiB

//
// MicroDexed
//
// A port of the Dexed sound engine (https://github.com/asb2m10/dexed) for the Teensy-3.5/3.6 with audio shield
// (c)2018 H. Wirtz <wirtz@parasitstudio.de>
//
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
#include <QueueArray.h>
#include <MIDI.h>
#include "dexed.h"
#define AUDIO_MEM 32
#define AUDIO_BUFFER_SIZE 128
#define SAMPLEAUDIO_BUFFER_SIZE 44100
#define INIT_AUDIO_QUEUE 1
#define SHOW_DEXED_TIMING 1
#define SHOW_CPU_LOAD
#define TEST_MIDI 1
#define TEST_NOTE 60
// GUItool: begin automatically generated code
AudioPlayQueue queue1; //xy=266,484
AudioOutputI2S i2s1; //xy=739,486
AudioConnection patchCord2(queue1, 0, i2s1, 0);
AudioConnection patchCord3(queue1, 0, i2s1, 1);
AudioControlSGTL5000 sgtl5000_1; //xy=384,610
// GUItool: end automatically generated code
MIDI_CREATE_INSTANCE(HardwareSerial, Serial1, MIDI);
Dexed* dexed = new Dexed(SAMPLEAUDIO_BUFFER_SIZE);
IntervalTimer sched;
void setup()
{
while (!Serial) ; // wait for Arduino Serial Monitor
Serial.begin(115200);
Serial.println(F("MicroDexed based on https://github.com/asb2m10/dexed"));
Serial.println(F("(c)2018 H. Wirtz"));
Serial.println(F("setup start"));
MIDI.begin(MIDI_CHANNEL_OMNI);
// Audio connections require memory to work. For more
// detailed information, see the MemoryAndCpuUsage example
AudioMemory(AUDIO_MEM);
sgtl5000_1.enable();
sgtl5000_1.volume(0.2);
// Initialize processor and memory measurements
#ifdef SHOW_CPU_LOAD
AudioProcessorUsageMaxReset();
AudioMemoryUsageMaxReset();
#endif
#ifdef INIT_AUDIO_QUEUE
// initial fill audio buffer with empty data
while (queue1.available())
{
int16_t* audio_buffer = queue1.getBuffer();
if (audio_buffer != NULL)
{
memset(audio_buffer, 0, sizeof(int16_t)*AUDIO_BUFFER_SIZE);
queue1.playBuffer();
}
}
#endif
dexed->activate();
#ifdef TEST_MIDI
queue_midi_event(0x90, TEST_NOTE, 100);
queue_midi_event(0x90, TEST_NOTE + 5, 100);
queue_midi_event(0x90, TEST_NOTE + 8, 100);
queue_midi_event(0x90, TEST_NOTE + 12, 100);
queue_midi_event(0x90, TEST_NOTE + 12, 100);
queue_midi_event(0x90, TEST_NOTE + 17, 100);
queue_midi_event(0x90, TEST_NOTE + 20, 100);
queue_midi_event(0x90, TEST_NOTE + 24, 100);
#endif
#ifdef SHOW_CPU_LOAD
sched.begin(cpu_and_mem_usage, 1000000);
#endif
Serial.println(F("setup end"));
}
void loop()
{
int16_t* audio_buffer; // pointer to 128 * int16_t
bool break_for_calculation;
audio_buffer = queue1.getBuffer();
if (audio_buffer == NULL)
{
Serial.println(F("audio_buffer allocation problems!"));
}
while (MIDI.read())
{
break_for_calculation = dexed->ProcessMidiMessage(MIDI.getType(), MIDI.getData1(), MIDI.getData2());
if (break_for_calculation == true)
break;
}
#ifdef SHOW_DEXED_TIMING
elapsedMicros t1;
#endif
dexed->GetSamples(AUDIO_BUFFER_SIZE, audio_buffer);
#ifdef SHOW_DEXED_TIMING
Serial.println(t1, DEC);
#endif
queue1.playBuffer();
}
bool queue_midi_event(uint8_t type, uint8_t data1, uint8_t data2)
{
return (dexed->ProcessMidiMessage(type, data1, data2));
}
#ifdef SHOW_CPU_LOAD
void cpu_and_mem_usage(void)
{
Serial.print(F("CPU:"));
Serial.print(AudioProcessorUsage(), DEC);
Serial.print(F(" CPU MAX:"));
Serial.print(AudioProcessorUsageMax(), DEC);
Serial.print(F(" MEM:"));
Serial.print(AudioMemoryUsage(), DEC);
Serial.print(F(" MEM MAX:"));
Serial.print(AudioMemoryUsageMax(), DEC);
Serial.println();
AudioProcessorUsageMaxReset();
AudioMemoryUsageMaxReset();
}
#endif