How to declare usbMIDI and beatClock

1

Hi Community,

i think i have a simple Problem but cant solve it on my own.
i started building a MIDI-controller on a teensy 3.2 with Arduino IDE, when i realized that its gonna be more Code then i thought, i wanted to switch to Platformio running on Atom, because of some reason you all know :wink:

so i take the code from the .ino file i wrote in Arduino IDE, copy/paste it to main.cpp include the Arduino.h library and the Midi.h library with

> #include <Arduino.h>
> #include <MIDI.h>

the files for the library are under /lib

platformio run
Compiling .pioenvs\teensy31\FrameworkArduino\pins_teensy.o
Compiling .pioenvs\teensy31\FrameworkArduino\ser_print.o
Compiling .pioenvs\teensy31\FrameworkArduino\serial1.o
src\main.cpp: In function 'void setup()':
src\main.cpp:32:3: error: 'usbMIDI' was not declared in this scope
usbMIDI.setHandleRealTimeSystem(beatClock);
^

src\main.cpp:32:35: error: 'beatClock' was not declared in this scope
usbMIDI.setHandleRealTimeSystem(beatClock);
^
src\main.cpp: In function 'void loop()':
src\main.cpp:50:3: error: 'usbMIDI' was not declared in this scope
usbMIDI.read();
^
*** [.pioenvs\teensy31\src\main.o] Error 1
 [ERROR] Took 3.17 seconds
 
Linter
Severity 	Provider 	Description	Line 
Error	Build	error: 'usbMIDI' was not declared in this scopee	32:3
Error	Build	error: 'beatClock' was not declared in this scopee	32:35
Error	Build	error: 'usbMIDI' was not declared in this scopee	50:3

i tried to put the files in /src/includes and project/inlcudes but didnt change a thing :frowning:
i cant even figure out if it is a library problem, a declaration problem,…

as you can see i’m pretty new to all of Arduino, Code, Platformio etc. so please help me to work on my project.

thank you Chris

2

Maybe this will help

1 Like
3

Well followed the link:

adding:

> void beatClock(byte realtimebyte);

was helping to declare beatClock :heart_eyes:

how to declare usbMIDI is still not clear to me, thank u for the help i gonna stay on ArduinoIDE i thought Platformio would make things easier… stuff is just getting more complicated to me

4

Why don’t youe want to use INO files without changes? PlatformIO works with INO files too.

5 
> platformio run
> Looking for dependencies...
> No dependencies
> Compiling .pioenvs\teensy31\src\aufger_umt_16_led__ber_2_595.ino.o
> Compiling .pioenvs\teensy31\FrameworkArduino\AudioStream.o
> Compiling .pioenvs\teensy31\FrameworkArduino\DMAChannel.o
> Compiling .pioenvs\teensy31\FrameworkArduino\EventResponder.o
> Compiling .pioenvs\teensy31\FrameworkArduino\HardwareSerial1.o

> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino: In function 'voi
> d setup()':
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino:26:3: error: 'usb
> MIDI' was not declared in this scope
> usbMIDI.setHandleRealTimeSystem(beatClock);
> ^
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino: In function 'voi
> d loop()':
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino:45:3: error: 'usb
> MIDI' was not declared in this scope
> usbMIDI.read();
> ^
> *** [.pioenvs\teensy31\src\aufger_umt_16_led__ber_2_595.ino.o] Error 1
>  [ERROR] Took 3.32 seconds

doesnt really work for me

6

See Teensy — PlatformIO latest documentation

build_flags = -D USB_MIDI

7 
> platformio run
> Compiling .pioenvs\teensy31\FrameworkArduino\WMath.o
> Compiling .pioenvs\teensy31\FrameworkArduino\WString.o
> Compiling .pioenvs\teensy31\FrameworkArduino\analog.o
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino:3:1: error: 'buil
> d_flags' does not name a type

> build_flags = -D USB_MIDI
> ^
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino: In function 'voi
> d setup()':
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino:27:3: error: 'usb
> MIDI' was not declared in this scope
> usbMIDI.setHandleRealTimeSystem(beatClock);
> ^
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino: In function 'voi
> d loop()':
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino:39:3: error: 'usb
> MIDI' was not declared in this scope
> usbMIDI.read();
> ^
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino: In function 'voi
> d beatClock(byte)':
> C:/Users/Chris/Documents/PlatformIO/Projects/171126-205858-teensy31/src/aufger_umt_16_led__ber_2_595.ino:44:22: error: 'ST
> ART' was not declared in this scope
> if(realtimebyte == START) { zaehler = 0; zeitAlt = millis(); }
> ^
> Compiling .pioenvs\teensy31\FrameworkArduino\avr_emulation.o
> *** [.pioenvs\teensy31\src\aufger_umt_16_led__ber_2_595.ino.o] Error 1
>  [ERROR] Took 3.34 seconds
8

It should be added to platformio.ini.

1 Like
9

Thank you very much ivankravets! you spend enough time to help a noob like me. Lets keep on building my own MIDI-controller :musical_score:

10

Does it work now? Please give us a star :star: here

11

yes it works :beers: from now on programming on PlatformIO. :dizzy: Star done!
Thanks again!

1 Like