add DAW Controller support for Arturia MiniLab 3 and KeyLab 3 Essential

based on https://github.com/PrzemekBarski/arturia-keylab-essential-mk3-programming-guide

Tested on a Arturia MiniLab 3

Keylab 3 Essential is not tested

src/Makefile

@@ -9,7 +9,8 @@ CMSIS_DIR = ../CMSIS_5/CMSIS
 OBJS = main.o kernel.o minidexed.o config.o userinterface.o uimenu.o \
        mididevice.o midikeyboard.o serialmididevice.o pckeyboard.o \
        sysexfileloader.o performanceconfig.o perftimer.o \
-       effect_compressor.o effect_platervbstereo.o uibuttons.o midipin.o
+       effect_compressor.o effect_platervbstereo.o uibuttons.o midipin.o \
+       dawcontroller.o
 
 OPTIMIZE = -O3
 

src/config.cpp

@@ -197,6 +197,8 @@ void CConfig::Load (void)
 	m_MIDIButtonActionTGUp = m_Properties.GetString ("MIDIButtonActionTGUp", "");
 	m_MIDIButtonActionTGDown = m_Properties.GetString ("MIDIButtonActionTGDown", "");
 
+	m_bDAWControllerEnabled = m_Properties.GetNumber ("DAWControllerEnabled", 0) != 0;
+
 	m_bEncoderEnabled = m_Properties.GetNumber ("EncoderEnabled", 0) != 0;
 	m_nEncoderPinClock = m_Properties.GetNumber ("EncoderPinClock", 10);
 	m_nEncoderPinData = m_Properties.GetNumber ("EncoderPinData", 9);
@@ -638,6 +640,36 @@ unsigned CConfig::GetMIDIButtonHome (void) const
 	return m_nMIDIButtonHome;
 }
 
+void CConfig::SetMIDIButtonCh (unsigned v)
+{
+	m_nMIDIButtonCh = v;
+} 
+
+void CConfig::SetMIDIButtonPrev (unsigned v)
+{
+	m_nMIDIButtonPrev = v;
+}
+
+void CConfig::SetMIDIButtonNext (unsigned v)
+{
+	m_nMIDIButtonNext = v;
+}
+
+void CConfig::SetMIDIButtonBack (unsigned v)
+{
+	m_nMIDIButtonBack = v;
+}
+
+void CConfig::SetMIDIButtonSelect (unsigned v)
+{
+	m_nMIDIButtonSelect = v;
+}
+
+void CConfig::SetMIDIButtonHome (unsigned v)
+{
+	m_nMIDIButtonHome = v;
+}
+
 const char *CConfig::GetMIDIButtonActionPrev (void) const
 {
 	return m_MIDIButtonActionPrev.c_str();
@@ -663,6 +695,31 @@ const char *CConfig::GetMIDIButtonActionHome (void) const
 	return m_MIDIButtonActionHome.c_str();
 }
 
+void CConfig::SetMIDIButtonActionPrev (const char *v)
+{
+	m_MIDIButtonActionPrev = v;
+}
+
+void CConfig::SetMIDIButtonActionNext (const char *v)
+{
+	m_MIDIButtonActionNext = v;
+}
+
+void CConfig::SetMIDIButtonActionBack (const char *v)
+{
+	m_MIDIButtonActionBack = v;
+}
+
+void CConfig::SetMIDIButtonActionSelect (const char *v)
+{
+	m_MIDIButtonActionSelect = v;
+}
+
+void CConfig::SetMIDIButtonActionHome (const char *v)
+{
+	m_MIDIButtonActionHome = v;
+}
+
 unsigned CConfig::GetMIDIButtonPgmUp (void) const
 {
 	return m_nMIDIButtonPgmUp;
@@ -703,6 +760,11 @@ const char *CConfig::GetMIDIButtonActionTGDown (void) const
 	return m_MIDIButtonActionTGDown.c_str();
 }
 
+bool CConfig::GetDAWControllerEnabled (void) const
+{
+	return m_bDAWControllerEnabled;
+}
+
 bool CConfig::GetEncoderEnabled (void) const
 {
 	return m_bEncoderEnabled;

src/config.h

@@ -213,13 +213,27 @@ class CConfig		// Configuration for MiniDexed
 	unsigned GetMIDIButtonSelect (void) const;
 	unsigned GetMIDIButtonHome (void) const;
 
+	void SetMIDIButtonCh (unsigned v);
+
+	void SetMIDIButtonPrev (unsigned v);
+	void SetMIDIButtonNext (unsigned v);
+	void SetMIDIButtonBack (unsigned v);
+	void SetMIDIButtonSelect (unsigned v);
+	void SetMIDIButtonHome (unsigned v);
+
 	// Action type for Midi buttons: "click", "doubleclick", "longpress", "dec", "inc", ""
 	const char *GetMIDIButtonActionPrev (void) const;
 	const char *GetMIDIButtonActionNext (void) const;
 	const char *GetMIDIButtonActionBack (void) const;
 	const char *GetMIDIButtonActionSelect (void) const;
 	const char *GetMIDIButtonActionHome (void) const;
 
+	void SetMIDIButtonActionPrev (const char *v);
+	void SetMIDIButtonActionNext (const char *v);
+	void SetMIDIButtonActionBack (const char *v);
+	void SetMIDIButtonActionSelect (const char *v);
+	void SetMIDIButtonActionHome (const char *v);
+
 	// MIDI Button Program and TG Selection
 	unsigned GetMIDIButtonPgmUp (void) const;
 	unsigned GetMIDIButtonPgmDown (void) const;
@@ -232,6 +246,8 @@ class CConfig		// Configuration for MiniDexed
 	const char *GetMIDIButtonActionTGUp (void) const;
 	const char *GetMIDIButtonActionTGDown (void) const;
 
+	bool GetDAWControllerEnabled (void) const;
+
 	// KY-040 Rotary Encoder
 	// GPIO pin numbers are chip numbers, not header positions
 	bool GetEncoderEnabled (void) const;
@@ -355,6 +371,8 @@ class CConfig		// Configuration for MiniDexed
 	std::string m_MIDIButtonActionTGUp;
 	std::string m_MIDIButtonActionTGDown;
 
+	bool m_bDAWControllerEnabled;
+
 	bool m_bEncoderEnabled;
 	unsigned m_nEncoderPinClock;
 	unsigned m_nEncoderPinData;