Refactored for teensy 4.0, xEvi hardware

- Switched to platformio, ino -> cpp
- MPRLS for pressure sensor
- Added basic ICM support
- Removed widi, battery, other features not supported in xEvi
- Removed legacy options/processing
- Added LED strip support
- Added encoder support
- Reworked menu code to use encoders/be more flexible

NuEVI/src/config.h

@@ -0,0 +1,57 @@
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+
+// Compile options, comment/uncomment to change
+
+#define FIRMWARE_VERSION "0.0.1"    // FIRMWARE VERSION NUMBER HERE <<<<<<<<<<<<<<<<<<<<<<<
+
+#define ON_Delay   20   // Set Delay after ON threshold before velocity is checked (wait for tounging peak)
+#define CCN_Port 5      // Controller number for portamento level
+#define CCN_PortOnOff 65// Controller number for portamento on/off
+#define START_NOTE 24 // set startNote to C (change this value in steps of 12 to start in other octaves)
+#define FILTER_FREQ 30.0
+#define CAP_SENS_ABSOLUTE_MAX 1000 // For inverting capacitive sensors
+#define PRESSURE_SENS_MULTIPLIER 10 // Multiply pressure sens so it's not a float
+#define CALIBRATE_SAMPLE_COUNT 4
+
+
+// Statup buttons
+#define STARTUP_FACTORY_RESET 0x3
+#define STARTUP_CONFIG 0xC
+#define TEST_CONFIG 0xA
+#define DEBUG_CONFIG 0x1
+
+// Buttons
+#define BTN_MENU 0x1
+#define BTN_VAL1 0x2
+#define BTN_VAL2 0x4
+#define BTN_PRESET 0x8
+
+// Send breath CC data no more than every CC_BREATH_INTERVAL 
+// milliseconds
+#define CC_BREATH_INTERVAL 5
+#define SLOW_MIDI_ADD 7
+#define CC_INTERVAL_PRIMARY 9
+#define CC_INTERVAL_PORT 13
+#define CC_INTERVAL_OTHER 37
+#define LVL_TIMER_INTERVAL 15
+#define CVPORTATUNE 2
+
+#define maxSamplesNum 120
+
+#define BREATH_LO_LIMIT   8000
+#define BREATH_HI_LIMIT   10000
+#define BITE_LO_LIMIT   0
+#define BITE_HI_LIMIT   1000
+#define PITCHB_LO_LIMIT   0
+#define PITCHB_HI_LIMIT   1000
+#define EXTRA_LO_LIMIT   0
+#define EXTRA_HI_LIMIT   1000
+#define CTOUCH_LO_LIMIT   0
+#define CTOUCH_HI_LIMIT   1000
+#define LEVER_LO_LIMIT    0
+#define LEVER_HI_LIMIT    1000
+
+#endif