forked from wirtz/BALibrary
parent
90441b5668
commit
ba4f138d4c
@ -0,0 +1,191 @@ |
||||
/*************************************************************************
|
||||
* This demo uses the BAGuitar library to provide enhanced control of |
||||
* the TGA Pro board. |
||||
*
|
||||
* The latest copy of the BA Guitar library can be obtained from |
||||
* https://github.com/Blackaddr/BAGuitar
|
||||
*
|
||||
* This demo will provide an audio passthrough, as well as exercise the |
||||
* MIDI interface. |
||||
*
|
||||
* It can optionally exercise the SPI MEM0 if installed on the TGA Pro board. |
||||
*
|
||||
*/ |
||||
#include <Wire.h> |
||||
#include <Audio.h> |
||||
#include <MIDI.h> |
||||
#include <SPI.h> |
||||
#include "BAGuitar.h" |
||||
|
||||
#include <midi_UsbTransport.h> |
||||
static const unsigned sUsbTransportBufferSize = 16; |
||||
typedef midi::UsbTransport<sUsbTransportBufferSize> UsbTransport; |
||||
|
||||
UsbTransport sUsbTransport; |
||||
|
||||
MIDI_CREATE_INSTANCE(UsbTransport, sUsbTransport, uMIDI); |
||||
|
||||
|
||||
MIDI_CREATE_DEFAULT_INSTANCE(); |
||||
using namespace midi; |
||||
|
||||
using namespace BAEffects; |
||||
|
||||
#define MIDI_DEBUG |
||||
|
||||
using namespace BALibrary; |
||||
|
||||
AudioInputI2S i2sIn; |
||||
AudioOutputI2S i2sOut; |
||||
BAAudioControlWM8731 codec; |
||||
|
||||
// External SRAM is required for this effect due to the very long
|
||||
// delays required.
|
||||
ExternalSramManager externalSram; |
||||
ExtMemSlot delaySlot; // Declare an external memory slot.
|
||||
|
||||
AudioEffectSOS sos(&delaySlot); |
||||
|
||||
// Add some effects for our soloing channel
|
||||
AudioEffectDelay delayModule; // we'll add a little slapback echo
|
||||
AudioMixer4 gainModule; // This will be used simply to reduce the gain before the reverb
|
||||
AudioEffectReverb reverb; // Add a bit of 'verb to our tone
|
||||
AudioFilterBiquad cabFilter; // We'll want something to cut out the highs and smooth the tone, just like a guitar cab.
|
||||
AudioMixer4 mixer; |
||||
|
||||
// Connect the input
|
||||
AudioConnection inputToSos(i2sIn, 0, sos, 0); |
||||
AudioConnection inputToSolo(i2sIn, 0, delayModule, 0); |
||||
|
||||
// Patch cables for the SOLO channel
|
||||
AudioConnection inputToGain(delayModule, 0, gainModule, 0); |
||||
AudioConnection inputToReverb(gainModule, 0, reverb, 0); |
||||
|
||||
// Output Mixer
|
||||
AudioConnection mixer0input(i2sIn, 0, mixer, 0); // SOLO Dry Channel
|
||||
AudioConnection mixer1input(reverb, 0, mixer, 1); // SOLO Wet Channel
|
||||
AudioConnection mixer2input(sos, 0, mixer, 2); // SOS Channel
|
||||
AudioConnection inputToCab(mixer, 0, cabFilter, 0); |
||||
|
||||
// CODEC Outputs
|
||||
AudioConnection outputLeft(cabFilter, 0, i2sOut, 0); |
||||
AudioConnection outputRight(cabFilter, 0, i2sOut, 1); |
||||
|
||||
int loopCount = 0; |
||||
|
||||
void OnControlChange(byte channel, byte control, byte value) { |
||||
sos.processMidi(channel-1, control, value); |
||||
#ifdef MIDI_DEBUG |
||||
Serial.print("Control Change, ch="); |
||||
Serial.print(channel, DEC); |
||||
Serial.print(", control="); |
||||
Serial.print(control, DEC); |
||||
Serial.print(", value="); |
||||
Serial.print(value, DEC); |
||||
Serial.println(); |
||||
#endif |
||||
} |
||||
|
||||
void setup() { |
||||
|
||||
delay(100); |
||||
Serial.begin(57600); // Start the serial port
|
||||
|
||||
// Disable the codec first
|
||||
codec.disable(); |
||||
delay(100); |
||||
AudioMemory(128); |
||||
delay(5); |
||||
|
||||
// Enable the codec
|
||||
Serial.println("Enabling codec...\n"); |
||||
codec.enable(); |
||||
delay(100); |
||||
|
||||
// We have to request memory be allocated to our slot.
|
||||
externalSram.requestMemory(&delaySlot, SPI_MEM0_SIZE_BYTES, MemSelect::MEM0, true); |
||||
//externalSram.requestMemory(&delaySlot, 50.0f, MemSelect::MEM0, true);
|
||||
|
||||
// Setup MIDI
|
||||
MIDI.begin(MIDI_CHANNEL_OMNI); |
||||
MIDI.setHandleControlChange(OnControlChange); |
||||
uMIDI.begin(MIDI_CHANNEL_OMNI); |
||||
uMIDI.setHandleControlChange(OnControlChange); |
||||
|
||||
// Configure the LED to indicate the gate status
|
||||
sos.setGateLedGpio(USR_LED_ID); |
||||
|
||||
// Configure which MIDI CC's will control the effect parameters
|
||||
sos.mapMidiControl(AudioEffectSOS::BYPASS,16); |
||||
sos.mapMidiControl(AudioEffectSOS::CLEAR_FEEDBACK_TRIGGER,22); |
||||
sos.mapMidiControl(AudioEffectSOS::GATE_TRIGGER,23); |
||||
sos.mapMidiControl(AudioEffectSOS::GATE_OPEN_TIME,20); |
||||
sos.mapMidiControl(AudioEffectSOS::GATE_CLOSE_TIME,21); |
||||
sos.mapMidiControl(AudioEffectSOS::FEEDBACK,24); |
||||
sos.mapMidiControl(AudioEffectSOS::VOLUME,17); |
||||
|
||||
// Besure to enable the delay. When disabled, audio is is completely blocked
|
||||
// to minimize resources to nearly zero.
|
||||
sos.enable();
|
||||
|
||||
// Set some default values.
|
||||
// These can be changed by sending MIDI CC messages over the USB using
|
||||
// the BAMidiTester application.
|
||||
sos.bypass(false); |
||||
sos.gateOpenTime(3000.0f); |
||||
sos.gateCloseTime(1000.0f); |
||||
sos.feedback(0.9f); |
||||
|
||||
// Setup effects on the SOLO channel
|
||||
gainModule.gain(0, 0.25); // the reverb unit clips easily if the input is too high
|
||||
delayModule.delay(0, 50.0f); // 50 ms slapback delay
|
||||
|
||||
// Setup 2-stages of LPF, cutoff 4500 Hz, Q-factor 0.7071 (a 'normal' Q-factor)
|
||||
cabFilter.setLowpass(0, 4500, .7071); |
||||
cabFilter.setLowpass(1, 4500, .7071); |
||||
|
||||
// Setup the Mixer
|
||||
mixer.gain(0, 0.5f); // SOLO Dry gain
|
||||
mixer.gain(1, 0.5f); // SOLO Wet gain
|
||||
mixer.gain(1, 1.0f); // SOS gain
|
||||
|
||||
} |
||||
|
||||
|
||||
|
||||
void loop() { |
||||
// usbMIDI.read() needs to be called rapidly from loop(). When
|
||||
// each MIDI messages arrives, it return true. The message must
|
||||
// be fully processed before usbMIDI.read() is called again.
|
||||
|
||||
if (loopCount % 524288 == 0) { |
||||
Serial.print("Processor Usage, Total: "); Serial.print(AudioProcessorUsage()); |
||||
Serial.print("% "); |
||||
Serial.print(" sos: "); Serial.print(sos.processorUsage()); |
||||
Serial.println("%"); |
||||
} |
||||
loopCount++; |
||||
|
||||
MIDI.read(); |
||||
uMIDI.read(); |
||||
|
||||
// // check for new MIDI from USB
|
||||
// if (usbMIDI.read()) {
|
||||
// // this code entered only if new MIDI received
|
||||
// byte type, channel, data1, data2, cable;
|
||||
// type = usbMIDI.getType(); // which MIDI message, 128-255
|
||||
// channel = usbMIDI.getChannel(); // which MIDI channel, 1-16
|
||||
// data1 = usbMIDI.getData1(); // first data byte of message, 0-127
|
||||
// data2 = usbMIDI.getData2(); // second data byte of message, 0-127
|
||||
// Serial.println(String("Received a MIDI message on channel ") + channel);
|
||||
//
|
||||
// if (type == MidiType::ControlChange) {
|
||||
// // if type is 3, it's a CC MIDI Message
|
||||
// // Note: the Arduino MIDI library encodes channels as 1-16 instead
|
||||
// // of 0 to 15 as it should, so we must subtract one.
|
||||
// OnControlChange(channel-1, data1, data2);
|
||||
// }
|
||||
// }
|
||||
|
||||
} |
||||
|
@ -0,0 +1,19 @@ |
||||
// To give your project a unique name, this code must be
|
||||
// placed into a .c file (its own tab). It can not be in
|
||||
// a .cpp file or your main sketch (the .ino file).
|
||||
|
||||
#include "usb_names.h" |
||||
|
||||
// Edit these lines to create your own name. The length must
|
||||
// match the number of characters in your custom name.
|
||||
|
||||
#define MIDI_NAME {'B','l','a','c','k','a','d','d','r',' ','A','u','d','i','o',' ','T','G','A',' ','P','r','o'} |
||||
#define MIDI_NAME_LEN 23 |
||||
|
||||
// Do not change this part. This exact format is required by USB.
|
||||
|
||||
struct usb_string_descriptor_struct usb_string_product_name = { |
||||
2 + MIDI_NAME_LEN * 2, |
||||
3, |
||||
MIDI_NAME |
||||
}; |
Loading…
Reference in new issue