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/*************************************************************************
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* This demo uses the BAGuitar library to provide enhanced control of |
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* the TGA Pro board. |
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*
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* The latest copy of the BA Guitar library can be obtained from |
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* https://github.com/Blackaddr/BAGuitar
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*
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* THIS DEMO REQUIRES BOTH THE EXTERNAL SRAM AND EXPANSION BOARD ADD-ONS |
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*
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* This demo combines the Blackaddr Audio Expansion board with the BAAudioEffectSOS, |
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* which provides sound-on-sound. The pushbuttons control the opening of the effect
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* gate, as well as clearing the sound being held. |
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*
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* The pots control the feedback, as well as the gate opening and close times. |
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*
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*/ |
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#define TGA_PRO_REVB // Set which hardware revision of the TGA Pro we're using
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#define TGA_PRO_EXPAND_REV2 // pull in the pin definitions for the Blackaddr Audio Expansion Board.
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#include "BAGuitar.h" |
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using namespace BAEffects; |
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using namespace BALibrary; |
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AudioInputI2S i2sIn; |
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AudioOutputI2S i2sOut; |
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BAAudioControlWM8731 codec; |
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// External SRAM is required for this effect due to the very long
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// delays required.
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ExternalSramManager externalSram; |
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ExtMemSlot delaySlot; // Declare an external memory slot.
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AudioEffectSOS sos(&delaySlot); |
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// Add some effects for our soloing channel
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AudioEffectDelay delayModule; // we'll add a little slapback echo
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AudioMixer4 gainModule; // This will be used simply to reduce the gain before the reverb
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AudioEffectReverb reverb; // Add a bit of 'verb to our tone
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AudioFilterBiquad cabFilter; // We'll want something to cut out the highs and smooth the tone, just like a guitar cab.
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AudioMixer4 mixer; |
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// Connect the input
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AudioConnection inputToSos(i2sIn, 0, sos, 0); |
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AudioConnection inputToSolo(i2sIn, 0, delayModule, 0); |
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// Patch cables for the SOLO channel
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AudioConnection inputToGain(delayModule, 0, gainModule, 0); |
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AudioConnection inputToReverb(gainModule, 0, reverb, 0); |
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// Output Mixer
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AudioConnection mixer0input(i2sIn, 0, mixer, 0); // SOLO Dry Channel
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AudioConnection mixer1input(reverb, 0, mixer, 1); // SOLO Wet Channel
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AudioConnection mixer2input(sos, 0, mixer, 2); // SOS Channel
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AudioConnection inputToCab(mixer, 0, cabFilter, 0); |
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// CODEC Outputs
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AudioConnection outputLeft(cabFilter, 0, i2sOut, 0); |
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AudioConnection outputRight(cabFilter, 0, i2sOut, 1); |
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//////////////////////////////////////////
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// SETUP PHYSICAL CONTROLS
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// - POT1 (left) will control the GATE OPEN time
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// - POT2 (right) will control the GATE CLOSE TIME
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// - POT3 (centre) will control the EFFECT VOLUME
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// - SW1 (left) will be used as the GATE TRIGGER
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// - LED1 (left) will be illuminated while the GATE is open
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// - SW2 (right) will be used as the CLEAR FEEDBACK TRIGGER
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// - LED2 (right) will illuminate when pressing SW2.
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//////////////////////////////////////////
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// To get the calibration values for your particular board, first run the
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// BAExpansionCalibrate.ino example and
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constexpr int potCalibMin = 1; |
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constexpr int potCalibMax = 1018; |
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constexpr bool potSwapDirection = true; |
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// Create a control object using the number of switches, pots, encoders and outputs on the
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// Blackaddr Audio Expansion Board.
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BAPhysicalControls controls(BA_EXPAND_NUM_SW, BA_EXPAND_NUM_POT, BA_EXPAND_NUM_ENC, BA_EXPAND_NUM_LED); |
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int loopCount = 0; |
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constexpr unsigned MAX_HEADPHONE_VOL = 10; |
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unsigned headphoneVolume = MAX_HEADPHONE_VOL; // control headphone volume from 0 to 10.
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constexpr float MAX_GATE_TIME_MS = 4000.0f; // set maximum gate time of 4 seconds.
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// BAPhysicalControls returns a handle when you register a new control. We'll uses these handles when working with the controls.
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int gateHandle, clearHandle, openHandle, closeHandle, volumeHandle, led1Handle, led2Handle; // Handles for the various controls
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void setup() { |
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delay(100); |
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delay(100); // wait a bit for serial to be available
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Serial.begin(57600); // Start the serial port
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delay(100); // wait a bit for serial to be available
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// Setup the controls. The return value is the handle to use when checking for control changes, etc.
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// pushbuttons
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gateHandle = controls.addSwitch(BA_EXPAND_SW1_PIN); // will be used for bypass control
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clearHandle = controls.addSwitch(BA_EXPAND_SW2_PIN); // will be used for stepping through filters
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// pots
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openHandle = controls.addPot(BA_EXPAND_POT1_PIN, potCalibMin, potCalibMax, potSwapDirection); // control the amount of delay
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closeHandle = controls.addPot(BA_EXPAND_POT2_PIN, potCalibMin, potCalibMax, potSwapDirection);
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volumeHandle = controls.addPot(BA_EXPAND_POT3_PIN, potCalibMin, potCalibMax, potSwapDirection);
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// leds
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led1Handle = controls.addOutput(BA_EXPAND_LED1_PIN); |
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led2Handle = controls.addOutput(BA_EXPAND_LED2_PIN); // will illuminate when pressing SW2
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// Disable the audio codec first
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codec.disable(); |
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AudioMemory(128); |
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// Enable the codec
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Serial.println("Enabling codec...\n"); |
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codec.enable(); |
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codec.setHeadphoneVolume(1.0f); // Max headphone volume
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// We have to request memory be allocated to our slot.
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externalSram.requestMemory(&delaySlot, SPI_MEM0_SIZE_BYTES, MemSelect::MEM0, true); |
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// Configure the LED to indicate the gate status, this is controlled directly by SOS effect, not by
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// by BAPhysicalControls
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sos.setGateLedGpio(BA_EXPAND_LED1_PIN); |
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// Besure to enable the delay. When disabled, audio is is completely blocked
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// to minimize resources to nearly zero.
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sos.enable();
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// Set some default values.
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// These can be changed by sending MIDI CC messages over the USB using
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// the BAMidiTester application.
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sos.bypass(false); |
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sos.gateOpenTime(3000.0f); |
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sos.gateCloseTime(1000.0f); |
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sos.feedback(0.9f); |
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// Setup effects on the SOLO channel
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gainModule.gain(0, 0.25); // the reverb unit clips easily if the input is too high
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delayModule.delay(0, 50.0f); // 50 ms slapback delay
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// Setup 2-stages of LPF, cutoff 4500 Hz, Q-factor 0.7071 (a 'normal' Q-factor)
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cabFilter.setLowpass(0, 4500, .7071); |
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cabFilter.setLowpass(1, 4500, .7071); |
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// Setup the Mixer
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mixer.gain(0, 0.5f); // SOLO Dry gain
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mixer.gain(1, 0.5f); // SOLO Wet gain
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mixer.gain(1, 1.0f); // SOS gain
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} |
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void loop() { |
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float potValue; |
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// Check if SW1 has been toggled (pushed) and trigger the gate
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// LED1 will be directly control by the SOS effect, not by BAPhysicalControls
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if (controls.isSwitchToggled(gateHandle)) { |
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sos.trigger();
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Serial.println("GATE OPEN is triggered"); |
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} |
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// Use SW2 to clear out the SOS delayline
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controls.setOutput(led2Handle, controls.getSwitchValue(led2Handle)); |
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if (controls.isSwitchToggled(clearHandle)) { |
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sos.clear(); |
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Serial.println("GATE CLEAR is triggered"); |
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} |
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// Use POT1 (left) to control the OPEN GATE time
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if (controls.checkPotValue(openHandle, potValue)) { |
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// Pot has changed
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sos.gateOpenTime(potValue * MAX_GATE_TIME_MS); |
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Serial.println(String("New OPEN GATE setting (ms): ") + (potValue * MAX_GATE_TIME_MS)); |
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} |
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// Use POT2 (right) to control the feedback setting
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if (controls.checkPotValue(closeHandle, potValue)) { |
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// Pot has changed
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sos.gateOpenTime(potValue * MAX_GATE_TIME_MS); |
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Serial.println(String("New CLOSE GATE setting (ms): ") + (potValue * MAX_GATE_TIME_MS)); |
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} |
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// Use POT3 (centre) to control the sos effect volume
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if (controls.checkPotValue(volumeHandle, potValue)) { |
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// Pot has changed
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Serial.println(String("New SOS VOLUME setting: ") + potValue); |
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sos.volume(potValue); |
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} |
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// Use the 'u' and 'd' keys to adjust headphone volume across ten levels.
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if (Serial) { |
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if (Serial.available() > 0) { |
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while (Serial.available()) { |
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char key = Serial.read(); |
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if (key == 'u') {
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headphoneVolume = (headphoneVolume + 1) % MAX_HEADPHONE_VOL; |
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Serial.println(String("Increasing HEADPHONE volume to ") + headphoneVolume); |
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} |
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else if (key == 'd') {
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headphoneVolume = (headphoneVolume - 1) % MAX_HEADPHONE_VOL; |
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Serial.println(String("Decreasing HEADPHONE volume to ") + headphoneVolume); |
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} |
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codec.setHeadphoneVolume(static_cast<float>(headphoneVolume) / static_cast<float>(MAX_HEADPHONE_VOL)); |
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} |
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} |
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} |
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if (loopCount % 524288 == 0) { |
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Serial.print("Processor Usage, Total: "); Serial.print(AudioProcessorUsage()); |
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Serial.print("% "); |
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Serial.print(" sos: "); Serial.print(sos.processorUsage()); |
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Serial.println("%"); |
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} |
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loopCount++; |
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} |
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@ -0,0 +1,19 @@ |
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// To give your project a unique name, this code must be
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// placed into a .c file (its own tab). It can not be in
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// a .cpp file or your main sketch (the .ino file).
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#include "usb_names.h" |
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// Edit these lines to create your own name. The length must
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// match the number of characters in your custom name.
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#define MIDI_NAME {'B','l','a','c','k','a','d','d','r',' ','A','u','d','i','o',' ','T','G','A',' ','P','r','o'} |
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#define MIDI_NAME_LEN 23 |
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// Do not change this part. This exact format is required by USB.
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struct usb_string_descriptor_struct usb_string_product_name = { |
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2 + MIDI_NAME_LEN * 2, |
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3, |
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MIDI_NAME |
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}; |
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,13 @@ |
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#include "DmaSpi.h" |
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#if defined(KINETISK) |
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DmaSpi0 DMASPI0; |
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#if defined(__MK66FX1M0__) |
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DmaSpi1 DMASPI1; |
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//DmaSpi2 DMASPI2;
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#endif |
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#elif defined (KINETISL) |
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DmaSpi0 DMASPI0; |
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DmaSpi1 DMASPI1; |
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#else |
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#endif // defined
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