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diff --git a/arduino/libraries/Bluefruit52Lib/src/services/BLEMidi.h b/arduino/libraries/Bluefruit52Lib/src/services/BLEMidi.h
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+++ b/arduino/libraries/Bluefruit52Lib/src/services/BLEMidi.h
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+/**************************************************************************/
+/*!
+    @file     BLEMidi.h
+    @author   hathach (tinyusb.org) & toddtreece
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2018, Adafruit Industries (adafruit.com) All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the
+    names of its contributors may be used to endorse or promote products
+    derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/**************************************************************************/
+#ifndef BLEMIDI_H_
+#define BLEMIDI_H_
+
+#include "bluefruit_common.h"
+#include "utility/adafruit_fifo.h"
+
+#include "BLECharacteristic.h"
+#include "BLEService.h"
+
+#define MIDI_CREATE_BLE_INSTANCE(midiService)   MIDI_CREATE_INSTANCE(BLEMidi, midiService, MIDI)
+
+#define BLE_MIDI_DEFAULT_FIFO_DEPTH   128
+#define BLE_MIDI_TX_BUFFER_SIZE       3
+
+extern const uint8_t BLEMIDI_UUID_SERVICE[];
+extern const uint8_t BLEMIDI_UUID_CHR_IO[];
+
+class BLEMidi: public BLEService, public Stream
+{
+  public:
+    typedef void (*midi_write_cb_t) (void);
+
+    BLEMidi(uint16_t fifo_depth = BLE_MIDI_DEFAULT_FIFO_DEPTH);
+
+    virtual err_t begin(void);
+    void begin(int baudrate); // MidiInterface
+    bool  notifyEnabled(void);
+
+    bool send(uint8_t data[], uint8_t len);
+    bool sendSplit(uint8_t data[], uint8_t len);
+
+    // message type helpers
+    bool isStatusByte(uint8_t b);
+    bool oneByteMessage(uint8_t status);
+    bool twoByteMessage(uint8_t status);
+    bool threeByteMessage(uint8_t status);
+
+    void setWriteCallback(midi_write_cb_t fp);
+    void autoMIDIread(void* midi_obj);
+
+    // Stream API for MIDI Interface
+    virtual int       read       ( void );
+    virtual size_t    write      ( uint8_t b );
+    virtual int       available  ( void );
+    virtual int       peek       ( void );
+    virtual void      flush      ( void );
+
+    using Print::write; // pull in write(str) and write(buf, size) from Print
+
+  private:
+    BLECharacteristic _io;
+
+    Adafruit_FIFO     _rxd_fifo;
+    midi_write_cb_t   _write_cb;
+
+    void* _midilib_obj;
+
+    void _write_handler(uint8_t* data, uint16_t len);
+
+    friend void blemidi_write_cb(BLECharacteristic& chr, uint8_t* data, uint16_t len, uint16_t offset);
+};
+
+
+
+#endif /* BLEMIDI_H_ */