From 1f3ae275d3140a28de041a0132b3734c393511ae Mon Sep 17 00:00:00 2001
From: Matthew Maxwell <maxwellmattryan@gmail.com>
Date: Sun, 20 Oct 2024 18:34:35 -0500
Subject: [PATCH] Add fix header path

---
 lib/cortex                   |  2 +-
 patches/init/lotus/Makefile  | 18 ++++++++++
 patches/init/lotus/README.md | 18 ++++++++++
 patches/init/lotus/lotus.cpp | 64 ++++++++++++++++++++++++++++++++++++
 4 files changed, 101 insertions(+), 1 deletion(-)
 create mode 100644 patches/init/lotus/Makefile
 create mode 100644 patches/init/lotus/README.md
 create mode 100644 patches/init/lotus/lotus.cpp

diff --git a/lib/cortex b/lib/cortex
index 60878f2..e743964 160000
--- a/lib/cortex
+++ b/lib/cortex
@@ -1 +1 @@
-Subproject commit 60878f270614ab2653b41174f20555086751c599
+Subproject commit e743964b37440b78730e4d6bc975c63c0fc66ceb
diff --git a/patches/init/lotus/Makefile b/patches/init/lotus/Makefile
new file mode 100644
index 0000000..df2acd1
--- /dev/null
+++ b/patches/init/lotus/Makefile
@@ -0,0 +1,18 @@
+# Project Name
+TARGET = Lotus
+
+# Source Files
+CPP_SOURCES = lotus.cpp
+
+# Library Directories
+LIBDAISY_DIR = ../../../vendor/libDaisy
+LIBCORTEX_DIR = ../../../lib/cortex
+
+# Include Cortex library
+C_INCLUDES += -I$(LIBCORTEX_DIR)/src
+LIBS += -lcortex
+LIBDIR += -L$(LIBCORTEX_DIR)/target/release
+
+# Include Daisy library Makefile
+SYSTEM_FILES_DIR = $(LIBDAISY_DIR)/core
+include $(SYSTEM_FILES_DIR)/Makefile
diff --git a/patches/init/lotus/README.md b/patches/init/lotus/README.md
new file mode 100644
index 0000000..210996a
--- /dev/null
+++ b/patches/init/lotus/README.md
@@ -0,0 +1,18 @@
+# Lotus
+
+> Emitting a harmonic meditation 🪷
+
+_Lotus_ is a rich binaural oscillator patch, named after the Lotus flower which symbolizes spiritual 
+awakening and harmony. It's connection to meditative practices can loosely be connected to the dual-frequency
+harmony of binaural beats.
+
+## Controls
+
+| Control  | Name      | Description                                                                                             |
+|----------|-----------|---------------------------------------------------------------------------------------------------------|
+| **CV_1** | Tune      | The leader oscillator's running frequency (100-400Hz)                                                   |
+| **CV_2** | Detune    | The speed of the binaural beat, detuning the follower oscillator within 20Hz from the leader oscillator |
+| **CV_3** | LFO Rate  | The speed at which the follower oscillator changes frequency                                            |
+| **CV_4** | LFO Depth | The amount in which the LFO rate affects the follower oscillator's frequency                            | 
+| **B8**   | Sync      | Syncs the two oscillators together when turned on                                                       |
+
diff --git a/patches/init/lotus/lotus.cpp b/patches/init/lotus/lotus.cpp
new file mode 100644
index 0000000..34b4e4c
--- /dev/null
+++ b/patches/init/lotus/lotus.cpp
@@ -0,0 +1,64 @@
+#include "cortex.h"
+#include "daisy_patch_sm.h"
+
+using namespace daisy;
+using namespace patch_sm;
+
+DaisyPatchSM hardware;
+Switch toggle;
+
+cortex::Oscillator leader;
+cortex::Oscillator follower;
+cortex::Oscillator lfo;
+
+const float MAX_DETUNE_AMOUNT = 20.0f;
+
+void AudioCallback(AudioHandle::InterleavingInputBuffer in, AudioHandle::InterleavingOutputBuffer out, size_t size)
+{
+    hardware.ProcessAllControls();
+    toggle.Debounce();
+
+    float tuneKnob = hardware.GetAdcValue(CV_1);
+    float detuneKnob = hardware.GetAdcValue(CV_2);
+    float lfoRateKnob = hardware.GetAdcValue(CV_3);
+    float lfoDepthKnob = hardware.GetAdcValue(CV_4);
+
+    bool isSyncOn = toggle.Pressed();
+    if (isSyncOn) {
+        leader.AttachFollower(&follower);
+    } else {
+        leader.DetachFollower();
+    }
+
+    float leaderFrequency = cortex::map(tuneKnob, 65.406f, 261.626f, cortex::Mapping::LOG);
+    leader.SetFrequency(leaderFrequency);
+
+    float followerDetune = MAX_DETUNE_AMOUNT * ((detuneKnob * 2.0f) - 1.0f);
+    follower.SetFrequency(leaderFrequency - followerDetune);
+
+    float lfoRate = (lfoRateKnob * 1000.0f) + 0.1f;
+    lfo.SetFrequency(lfoRate);
+
+    for (size_t idx = 0; idx < size; idx += 2) {
+        float leaderSample = leader.Generate();
+        float followerSample = follower.Generate();
+
+        float lfoMod = lfoDepthKnob * lfo.Generate();
+        float modulatedLeaderFrequency = leaderFrequency + (MAX_DETUNE_AMOUNT * lfoMod);
+        leader.SetFrequency(modulatedLeaderFrequency + (MAX_DETUNE_AMOUNT * lfoMod));
+        follower.SetFrequency(modulatedLeaderFrequency - followerDetune);
+
+        out[idx] = leaderSample;
+        out[idx + 1] = followerSample;
+    }
+
+    hardware.WriteCvOut(2, 5.0f * out[0]);
+}
+
+int main(void)
+{
+    hardware.Init();
+    toggle.Init(hardware.B8);
+    hardware.StartAudio(AudioCallback);
+    while (1) { }
+}