first commit

README.md

@@ -0,0 +1 @@
+# haid_workshop_2022

projects/haid_00_driver_test/render.cpp

@@ -0,0 +1,118 @@
+/*
+ ____  _____ _        _
+| __ )| ____| |      / \
+|  _ \|  _| | |     / _ \
+| |_) | |___| |___ / ___ \
+|____/|_____|_____/_/   \_\
+http://bela.io
+*/
+
+#include <Bela.h>
+#include <libraries/Oscillator/Oscillator.h>
+#include <libraries/Gui/Gui.h>
+#include <libraries/GuiController/GuiController.h>
+#include <cmath>
+
+/* Audio output channels for driver (haptic output) and headphones */
+unsigned int kHapticOutputCh = 1;
+unsigned int kAudibleOutputCh = 0;
+
+/** OSCILLATORS **/
+// Oscillator (aliased) objects
+Oscillator hapticOsc;	// Haptic oscillator (for driver) 
+Oscillator audibleOsc;	// Audible oscillator
+Oscillator amLfo;		// Amplitude modulation LFO (low frequency oscillator)
+
+// Frequency range for oscillator controls
+float gHapticOscFreqRange[2] = {10, 200.0}; 	// Haptic oscillator
+float gAudibleOscFreqRange[2] = {200, 440};		// Audible oscillator
+float gAmLFOFreqRange[2] = {0.0, 30.0};			// AM LFO
+
+/** GUI **/
+// GUI instance
+Gui gui;
+// GUI controller instance
+GuiController controller;
+
+// Indices for different slider controls
+unsigned int gHapticOscFreqSliderId;	// Frequency of haptic oscillator
+unsigned int gAMLfoFreqSliderId;		// Frequency of AM LFO
+unsigned int gHapticAmplitudeSliderId;	// Amplitude of Haptic output
+unsigned int gAudibleAmplitudeSliderId;	// Amplitude of Audible output
+
+bool setup(BelaContext *context, void *userData)
+{
+	// Setup Haptic Oscillator
+	hapticOsc.setup(context->audioSampleRate);
+	hapticOsc.setType(Oscillator::sine);
+	// Setup Audio Oscillator
+	audibleOsc.setup(context->audioSampleRate);
+	audibleOsc.setType(Oscillator::sine);
+	// Setup Amplitude Modulation LFO
+	amLfo.setup(context->audioSampleRate);
+	amLfo.setType(Oscillator::square);
+
+	/** GUI **/
+	// Setup GUI
+	gui.setup(context->projectName);
+	// ...and attach gui controllerto it
+	controller.setup(&gui, "Controls");
+
+	// Setup sliders
+	// Arguments: name, default value, minimum, maximum, increment (store the return value to read from the slider later on)
+	gHapticOscFreqSliderId = controller.addSlider("Haptic OSC freq",(int)(0.5*(gHapticOscFreqRange[1] - gHapticOscFreqRange[0])) , gHapticOscFreqRange[0], gHapticOscFreqRange[1], 1);	// Frequency of haptic oscillator
+	gAMLfoFreqSliderId = controller.addSlider("AM LFO freq",gAmLFOFreqRange[0] , gAmLFOFreqRange[0], gAmLFOFreqRange[1], 1);	// Frequency of AM LFO
+	gHapticAmplitudeSliderId = controller.addSlider("Haptic Amplitude", 1.0, 0, 1.0, 0.001);									// Amplitude of Haptic output
+	gAudibleAmplitudeSliderId = controller.addSlider("Audio Amplitude", 0.15, 0, 0.5, 0.001);										// Amplitude of Audible output
+
+	return true;
+}
+
+void render(BelaContext *context, void *userData)
+{
+	// Access the sliders specifying the index we obtained when creating then to retrieve their current value
+	float hapticOscFreq = controller.getSliderValue(gHapticOscFreqSliderId);		// Frequency of haptic oscillator
+	float amLfoFreq = controller.getSliderValue(gAMLfoFreqSliderId);				// Frequency of AM LFO
+	float hapticAmplitude = controller.getSliderValue(gHapticAmplitudeSliderId);	// Amplitude of Haptic output
+	float audibleAmplitude = controller.getSliderValue(gAudibleAmplitudeSliderId);		// Amplitude of Audible output
+
+	// [note] There is no smoothing for amplitude and frequency, you will get clicks when the values change
+
+
+	hapticOsc.setFrequency(hapticOscFreq);	// Set frequency of haptic oscillator
+	amLfo.setFrequency(amLfoFreq);			// Set frequency of AM LFO
+
+	// Get frequency for audio oscillator by remapping frequency of haptic oscillator to appropriate range
+	float audibleOscFreq = map(hapticOscFreq, gHapticOscFreqRange[0], gHapticOscFreqRange[1], gAudibleOscFreqRange[0], gAudibleOscFreqRange[1]);
+	audibleOsc.setFrequency(audibleOscFreq); // Set frequency of 
+
+	// Calculate Amplitude Modulation
+	float amLfoVal;
+	if(amLfoFreq == 0.0)	// If frequency is zero...
+		amLfoVal = 1.0;		// .. no amplitude modulation
+	else					// If frequency is not zero...
+		amLfoVal = 0.5 * (amLfo.process() + 1); // .. re-scale oscillator output from (-1,1) to (0,1) 
+
+	/* Frame loop (audio rate) */
+	for(unsigned int n = 0; n < context->audioFrames; n++) {
+
+		// Compute otput by scaling with the gain and including AM modulation
+		float hapticOut = hapticOsc.process() * hapticAmplitude * amLfoVal;		// Haptic output
+		float audibleOut = audibleOsc.process() * audibleAmplitude * amLfoVal;	// Audio output
+
+		// Iterate over audio channels
+		for(unsigned int channel = 0; channel < context->audioOutChannels; channel++)
+		{
+			float out = 0.0;
+			if(channel == kAudibleOutputCh)			// If channel matches channel assigned to audible output... 
+				out = audibleOut;
+			else if (channel == kHapticOutputCh) 	// If channel matches channel assigned to haptic output... 
+				out = hapticOut;
+			// Write output to channel
+			audioWrite(context, n, channel, out);
+		}
+	}
+}
+
+void cleanup(BelaContext *context, void *userData)
+{}

projects/haid_00_driver_test/settings.json

@@ -0,0 +1,34 @@
+{
+  "fileName": "render.cpp",
+  "CLArgs": {
+    "-p": "16",
+    "-C": "8",
+    "-B": "16",
+    "-N": "1",
+    "-G": "1",
+    "-M": "0",
+    "-H0,": "-6",
+    "-H1,": "-6",
+    "-H2,": "-6",
+    "-H3,": "-6",
+    "-H4,": "-6",
+    "-H5,": "-6",
+    "-H6,": "-6",
+    "-H7,": "-6",
+    "-I0,": "10",
+    "-I1,": "10",
+    "-I2,": "10",
+    "-I3,": "10",
+    "-I4,": "10",
+    "-I5,": "10",
+    "-I6,": "10",
+    "-I7,": "10",
+    "user": "",
+    "make": "",
+    "-X": "0",
+    "audioExpander": "0",
+    "-Y": "",
+    "-Z": "",
+    "--disable-led": "0"
+  }
+}

projects/haid_01_button/render.cpp

@@ -0,0 +1,144 @@
+/*
+ ____  _____ _        _
+| __ )| ____| |      / \
+|  _ \|  _| | |     / _ \
+| |_) | |___| |___ / ___ \
+|____/|_____|_____/_/   \_\
+http://bela.io
+*/
+/**
+\example Gui/sliders/render.cpp
+
+*/
+
+#include <Bela.h>
+#include <libraries/Oscillator/Oscillator.h>
+#include <libraries/Gui/Gui.h>
+#include <libraries/GuiController/GuiController.h>
+#include <cmath>
+
+/* Audio output channels for driver (haptic output) and headphones */
+unsigned int kHapticOutputCh = 1;
+unsigned int kAudibleOutputCh = 0;
+
+/* Digital input for button */
+unsigned int kButtonInput = 0; // Connect button to digital input (see diagram on the IDE)
+unsigned int gPreviousButtonState = 0;
+
+
+/** OSCILLATORS **/
+// Oscillator (aliased) objects
+Oscillator hapticOsc;	// Haptic oscillator (for driver) 
+Oscillator audibleOsc;	// Audible oscillator
+Oscillator amLfo;		// Amplitude modulation LFO (low frequency oscillator)
+
+// Frequency range for oscillator controls
+float gHapticOscFreqRange[2] = {10, 200.0}; 	// Haptic oscillator
+float gAudibleOscFreqRange[2] = {200, 440};		// Audible oscillator
+float gAmLFOFreqRange[2] = {0.0, 30.0};			// AM LFO
+
+bool gOscToggle = false; // Toggle oscillator(s) on (true) and off (false)
+
+/** GUI **/
+// GUI instance
+Gui gui;
+// GUI controller instance
+GuiController controller;
+
+// Indices for different slider controls
+unsigned int gHapticOscFreqSliderId;	// Frequency of haptic oscillator
+unsigned int gAMLfoFreqSliderId;		// Frequency of AM LFO
+unsigned int gHapticAmplitudeSliderId;	// Amplitude of Haptic output
+unsigned int gAudibleAmplitudeSliderId;	// Amplitude of Audible output
+
+bool setup(BelaContext *context, void *userData)
+{
+	// Setup Haptic Oscillator
+	hapticOsc.setup(context->audioSampleRate);
+	hapticOsc.setType(Oscillator::sine);
+	// Setup Audio Oscillator
+	audibleOsc.setup(context->audioSampleRate);
+	audibleOsc.setType(Oscillator::sine);
+	// Setup Amplitude Modulation LFO
+	amLfo.setup(context->audioSampleRate);
+	amLfo.setType(Oscillator::square);
+
+	/** GUI **/
+	// Setup GUI
+	gui.setup(context->projectName);
+	// ...and attach gui controllerto it
+	controller.setup(&gui, "Controls");
+
+	// Setup sliders
+	// Arguments: name, default value, minimum, maximum, increment (store the return value to read from the slider later on)
+	gHapticOscFreqSliderId = controller.addSlider("Haptic OSC freq",(int)(0.5*(gHapticOscFreqRange[1] - gHapticOscFreqRange[0])) , gHapticOscFreqRange[0], gHapticOscFreqRange[1], 1);	// Frequency of haptic oscillator
+	gAMLfoFreqSliderId = controller.addSlider("AM LFO freq",gAmLFOFreqRange[0] , gAmLFOFreqRange[0], gAmLFOFreqRange[1], 1);	// Frequency of AM LFO
+	gHapticAmplitudeSliderId = controller.addSlider("Haptic Amplitude", 1.0, 0, 1.0, 0.001);									// Amplitude of Haptic output
+	gAudibleAmplitudeSliderId = controller.addSlider("Audio Amplitude", 0.15, 0, 0.5, 0.001);									// Amplitude of Audible output
+
+	/** BUTTON **/
+	pinMode(context, 0, kButtonInput, INPUT); // set button's digital to input
+
+	return true;
+}
+
+void render(BelaContext *context, void *userData)
+{
+	// Access the sliders specifying the index we obtained when creating then to retrieve their current value
+	float hapticOscFreq = controller.getSliderValue(gHapticOscFreqSliderId);		// Frequency of haptic oscillator
+	float amLfoFreq = controller.getSliderValue(gAMLfoFreqSliderId);				// Frequency of AM LFO
+	float hapticAmplitude = controller.getSliderValue(gHapticAmplitudeSliderId);	// Amplitude of Haptic output
+	float audibleAmplitude = controller.getSliderValue(gAudibleAmplitudeSliderId);		// Amplitude of Audible output
+
+	// [note] There is no smoothing for amplitude and frequency, you will get clicks when the values change
+
+
+	hapticOsc.setFrequency(hapticOscFreq);	// Set frequency of haptic oscillator
+	amLfo.setFrequency(amLfoFreq);			// Set frequency of AM LFO
+
+	// Get frequency for audio oscillator by remapping frequency of haptic oscillator to appropriate range
+	float audibleOscFreq = map(hapticOscFreq, gHapticOscFreqRange[0], gHapticOscFreqRange[1], gAudibleOscFreqRange[0], gAudibleOscFreqRange[1]);
+	audibleOsc.setFrequency(audibleOscFreq); // Set frequency of 
+
+	// Calculate Amplitude Modulation
+	float amLfoVal;
+	if(amLfoFreq == 0.0)	// If frequency is zero...
+		amLfoVal = 1.0;		// .. no amplitude modulation
+	else					// If frequency is not zero...
+		amLfoVal = 0.5 * (amLfo.process() + 1); // .. re-scale oscillator output from (-1,1) to (0,1) 
+
+	/* Frame loop (audio rate) */
+	for(unsigned int n = 0; n < context->audioFrames; n++) {
+
+		/** DIGITAL **/
+		// Read the state of the button
+		int buttonState = digitalRead(context, n, kButtonInput);
+
+		// If button pressed...
+		if(buttonState == 1)	
+			gOscToggle = true;
+		// If button released...
+		else
+			gOscToggle = false;
+
+		/** AUDIO **/
+		// Compute output by scaling with the amplitude
+		float hapticOut = hapticOsc.process() * hapticAmplitude * gOscToggle;		// Haptic output
+		float audibleOut = audibleOsc.process() * audibleAmplitude * gOscToggle;	// Audio output
+
+		// Iterate over audio channels
+		for(unsigned int channel = 0; channel < context->audioOutChannels; channel++)
+		{
+			float out = 0.0;
+			if(channel == kAudibleOutputCh)			// If channel matches channel assigned to audible output... 
+				out = audibleOut;
+			else if (channel == kHapticOutputCh) 	// If channel matches channel assigned to haptic output... 
+				out = hapticOut;
+			// Write output to channel
+			audioWrite(context, n, channel, out);
+		}
+	}
+}
+
+void cleanup(BelaContext *context, void *userData)
+{}

projects/haid_01_button/settings.json

@@ -0,0 +1,34 @@
+{
+  "fileName": "render.cpp",
+  "CLArgs": {
+    "-p": "16",
+    "-C": "8",
+    "-B": "16",
+    "-N": "1",
+    "-G": "1",
+    "-M": "0",
+    "-H0,": "-6",
+    "-H1,": "-6",
+    "-H2,": "-6",
+    "-H3,": "-6",
+    "-H4,": "-6",
+    "-H5,": "-6",
+    "-H6,": "-6",
+    "-H7,": "-6",
+    "-I0,": "10",
+    "-I1,": "10",
+    "-I2,": "10",
+    "-I3,": "10",
+    "-I4,": "10",
+    "-I5,": "10",
+    "-I6,": "10",
+    "-I7,": "10",
+    "user": "",
+    "make": "",
+    "-X": "0",
+    "audioExpander": "0",
+    "-Y": "",
+    "-Z": "",
+    "--disable-led": "0"
+  }
+}