chore: Code-fence Nano 33BLE

Author: franky47

examples/AltPinSerial/AltPinSerial.ino

@@ -5,7 +5,7 @@
 // Here, when receiving any message on channel 4, the Arduino
 // will blink a led and play back a note for 1 second.
 
-#if defined(ARDUINO_SAM_DUE) || defined(SAMD_SERIES) || defined(_VARIANT_ARDUINO_ZERO_)
+#if defined(ARDUINO_SAM_DUE) || defined(SAMD_SERIES) || defined(_VARIANT_ARDUINO_ZERO_) || defined(ARDUINO_NANO33BLE)
    /* example not relevant for this hardware (SoftwareSerial not supported) */
    MIDI_CREATE_DEFAULT_INSTANCE();
 #else

examples/Bench/Bench.ino

@@ -7,7 +7,7 @@
 // All other Arduinos:                              Connect pins 2 and 3.
 // The program will then wait for 100 loops and print the results.
 
-#if defined(ARDUINO_SAM_DUE) || defined(USBCON)
+#if defined(ARDUINO_SAM_DUE) || defined(USBCON) || defined(ARDUINO_NANO33BLE)
     // Print through USB and bench with Hardware serial
     MIDI_CREATE_INSTANCE(HardwareSerial, Serial1, midiBench);
 #else

examples/DualMerger/DualMerger.ino

@@ -9,7 +9,7 @@
 #if defined(ARDUINO_SAM_DUE)
     MIDI_CREATE_INSTANCE(HardwareSerial, Serial,     midiA);
     MIDI_CREATE_INSTANCE(HardwareSerial, Serial1,    midiB);
-#elif defined(ARDUINO_SAMD_ZERO)
+#elif defined(ARDUINO_SAMD_ZERO) || defined(ARDUINO_NANO33BLE)
     MIDI_CREATE_INSTANCE(Serial_, SerialUSB,  midiA);
     MIDI_CREATE_INSTANCE(HardwareSerial, Serial1,    midiB);
 #elif defined(USBCON) || defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MKL26Z64__)