Can't compile with default MIDI object

[Cynosure48]

I have tried compiling code with the latest version of the MIDI Library with an Arduino UNO. I saw that I am supposed to add 'MIDI_CREATE_DEFAULT_INSTANCE();' below where I include the library.

When I include this line, I get the following error:

expected constructor, destructor, or type conversion before the ';' token

Yet it compiles fine when I leave out the new object.

Any idea why?

[gretel]

do you include the library?

[Cynosure48]

The library is included. Without that new line, the code compiles and works fine. However, according to the instructions and examples, I am required to add that line. I don't mind just leaving it out, but I am confused as to why I am instructed to include it.

[franky47]

Hello,

Are the examples compiling?

This new line is required because the MIDI object is no longer created by default. This macro will ensure compatibility for existing sketches by recreating it.

[BruceWebster]

I think I'm seeing a similar (or at least related) thing.
When I try to compile the MIDI_Callbacks example, I see the following:

MIDI_Callbacks:3: error: expected constructor, destructor, or type conversion before ';' token
MIDI_Callbacks.ino: In function 'void setup()':
MIDI_Callbacks:33: error: 'MIDI' was not declared in this scope
MIDI_Callbacks:39: error: 'MIDI_CHANNEL_OMNI' was not declared in this scope
MIDI_Callbacks.ino: In function 'void loop()':
MIDI_Callbacks:45: error: 'MIDI' was not declared in this scope

Running Arduino IDE 1.0.5 for UNO

[franky47]

Please update all the library files, from the download section:
https://github.com/FortySevenEffects/arduino_midi_library/releases/download/4.2/Arduino_MIDI_Library_v4.2.zip
You should get the following folders and files:

* MIDI/
    - midi_Namespace.h
    - midi_Defs.h
    - midi_Settings.h
    - midi_Messages.h
    - MIDI.cpp
    - MIDI.hpp
    - MIDI.h
    - keywords.txt
    * examples/
        * MIDI_Basic_IO/
            - MIDI_Basic_IO.ino
        * MIDI_Bench/
            - MIDI_Bench.ino
        * MIDI_Callbacks/
            - MIDI_Callbacks.ino
        * MIDI_DualMerger/
            - MIDI_DualMerger.ino
        * MIDI_Input/
            - MIDI_Input.ino
        * MIDI_SimpleSynth/
            - MIDI_SimpleSynth.ino
            - noteList.cpp
            - noteList.h
            - pitches.h

[BruceWebster]

Wow! Thanks for the quick response.
The examples compile now. Next steps - integrate with my lighting project and debug the hardware.
Thanks again. You are THE MAN.