usbMIDI was not declared in this scope?

[aidangoetzinger]

Hello,
I have been trying to send MIDI data over usb into the teensy 4.0. However, I cant wrap my head around the error message I am receiving "'usbMIDI' was not declared in this scope". I will post my code down below but I have included the MIDI.h library and my IDE is updated to version 1.56. I am using the boilerplate "inputFunctionsBasic" example from the examples tab. If anyone else has had similar issues I would love to hear your potential fixes.

Thank you

#include <MIDI.h>


void setup() {
  Serial.begin(115200);
  usbMIDI.setHandleNoteOn(myNoteOn);
  usbMIDI.setHandleNoteOff(myNoteOff);
  usbMIDI.setHandleControlChange(myControlChange);
}

void loop() {
  // The handler functions are called when usbMIDI reads data.  They
  // will not be called automatically.  You must call usbMIDI.read()
  // regularly from loop() for usbMIDI to actually read incoming
  // data and run the handler functions as messages arrive.
  usbMIDI.read();
}


void myNoteOn(byte channel, byte note, byte velocity) {
  // When using MIDIx4 or MIDIx16, usbMIDI.getCable() can be used
  // to read which of the virtual MIDI cables received this message.
  Serial.print("Note On, ch=");
  Serial.print(channel, DEC);
  Serial.print(", note=");
  Serial.print(note, DEC);
  Serial.print(", velocity=");
  Serial.println(velocity, DEC);
}

void myNoteOff(byte channel, byte note, byte velocity) {
  Serial.print("Note Off, ch=");
  Serial.print(channel, DEC);
  Serial.print(", note=");
  Serial.print(note, DEC);
  Serial.print(", velocity=");
  Serial.println(velocity, DEC);
}

void myControlChange(byte channel, byte control, byte value) {
  Serial.print("Control Change, ch=");
  Serial.print(channel, DEC);
  Serial.print(", control=");
  Serial.print(control, DEC);
  Serial.print(", value=");
  Serial.println(value, DEC);
}

[PaulStoffregen]

Usually usbMIDI not in scope means you need to click Tools > USB Type and configure the USB to be MIDI.