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127 lines
3.9 KiB
127 lines
3.9 KiB
#include <MIDI.h>
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#include "BAGuitar.h"
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using namespace BAGuitar;
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AudioInputI2S i2sIn;
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AudioOutputI2S i2sOut;
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BAAudioControlWM8731 codec;
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#define USE_EXT
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#ifdef USE_EXT
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// If using external SPI memory, we will instantiance an SRAM
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// manager and create an external memory slot to use as the memory
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// for our audio delay
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ExternalSramManager externalSram(1); // Manage only one SRAM.
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ExtMemSlot delaySlot; // Declare an external memory slot.
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// Instantiate the AudioEffectAnalogDelay to use external memory by
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/// passing it the delay slot.
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AudioEffectAnalogDelay myDelay(&delaySlot);
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#else
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// If using internal memory, we will instantiate the AudioEffectAnalogDelay
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// by passing it the maximum amount of delay we will use in millseconds. Note that
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// audio delay lengths are very limited when using internal memory due to limited
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// internal RAM size.
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AudioEffectAnalogDelay myDelay(200.0f); // max delay of 200 ms.
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#endif
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//AudioMixer4 mixer; // Used to mix the original dry with the wet (effects) path.
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//
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//AudioConnection patch0(i2sIn,0, myDelay,0);
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//AudioConnection mixerDry(i2sIn,0, mixer,0);
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//AudioConnection mixerWet(myDelay,0, mixer,1);
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AudioConnection input(i2sIn,0, myDelay,0);
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AudioConnection leftOut(myDelay,0, i2sOut, 0);
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int loopCount = 0;
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AudioConnection rightOut(myDelay,0, i2sOut, 1);
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void setup() {
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delay(100);
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Serial.begin(57600);
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codec.disable();
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delay(100);
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AudioMemory(128);
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delay(5);
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// Setup MIDI
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//usbMIDI.setHandleControlChange(OnControlChange);
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Serial.println("Enabling codec...\n");
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codec.enable();
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delay(100);
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#ifdef USE_EXT
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Serial.println("Using EXTERNAL memory");
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// We have to request memory be allocated to our slot.
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externalSram.requestMemory(&delaySlot, 1400.0f, MemSelect::MEM1, true);
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#else
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Serial.println("Using INTERNAL memory");
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#endif
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// Configure which MIDI CC's will control the effects
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myDelay.mapMidiControl(AudioEffectAnalogDelay::BYPASS,16);
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myDelay.mapMidiControl(AudioEffectAnalogDelay::DELAY,20);
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myDelay.mapMidiControl(AudioEffectAnalogDelay::FEEDBACK,21);
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myDelay.mapMidiControl(AudioEffectAnalogDelay::MIX,22);
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myDelay.mapMidiControl(AudioEffectAnalogDelay::VOLUME,23);
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// Besure to enable the delay, by default it's processing is off.
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myDelay.enable();
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// Set some default values. They can be changed by sending MIDI CC messages
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// over the USB.
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myDelay.delay(200.0f);
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myDelay.bypass(false);
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myDelay.mix(1.0f);
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myDelay.feedback(0.0f);
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// mixer.gain(0, 0.0f); // unity gain on the dry
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// mixer.gain(1, 1.0f); // unity gain on the wet
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}
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void OnControlChange(byte channel, byte control, byte value) {
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myDelay.processMidi(channel, control, value);
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Serial.print("Control Change, ch=");
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Serial.print(channel, DEC);
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Serial.print(", control=");
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Serial.print(control, DEC);
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Serial.print(", value=");
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Serial.print(value, DEC);
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Serial.println();
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}
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void loop() {
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// usbMIDI.read() needs to be called rapidly from loop(). When
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// each MIDI messages arrives, it return true. The message must
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// be fully processed before usbMIDI.read() is called again.
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//Serial.println(".");
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if (loopCount % 262144 == 0) {
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Serial.print("Processor Usage: "); Serial.print(AudioProcessorUsage());
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Serial.print(" "); Serial.print(AudioProcessorUsageMax());
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Serial.print(" Delay: "); Serial.print(myDelay.processorUsage());
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Serial.print(" "); Serial.println(myDelay.processorUsageMax());
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}
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loopCount++;
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if (usbMIDI.read()) {
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byte type, channel, data1, data2, cable;
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type = usbMIDI.getType(); // which MIDI message, 128-255
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channel = usbMIDI.getChannel(); // which MIDI channel, 1-16
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data1 = usbMIDI.getData1(); // first data byte of message, 0-127
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data2 = usbMIDI.getData2(); // second data byte of message, 0-127
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//cable = usbMIDI.getCable(); // which virtual cable with MIDIx8, 0-7
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if (type == 3) {
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OnControlChange(channel-1, data1, data2);
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}
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}
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}
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