Teensy 2.0++ Midi Support

[pioneerman2k1]

Is it possible to add support for the teensy 2.0++? The Teensy is able to act like an USB Midi device.

[DhrBaksteen]

Yes that is possible. In fact I have a Teensy ordered that I hope to receive by the end of this week to start implementing this :)

[pioneerman2k1]

Nice! In that case u can use it (like MUNT) as an Midi Device. So u would be able to Play on an MIDI-Keyboard and use the OPL2 Board as Output. Cant wait for it!

[saschaamend]

Sounds nice! Another thing is, that u can use it as an Midi-Device in DosBox as Output Device. That would be so nice!

[DhrBaksteen]

Feel free to give the linked branch a try and let me know about any issues.

After building the TeensyMidi.ino sketch the OPL2 board should show up as 'OPL2 Audio Board MIDI'. Using the board as a MIDI instrument works great from what I tested in MIDI-OX and DoxBox. Pitch control is still missing and I'm making some assumptions around channel volume control, but so far it seems to work very well!

Known issues with games in DosBox: Descent: Game crashes when flying through the exit. Not sure is this is my DosBox setup, or some MIDI event I should handle / respond to Beneath a steel sky: Game creahes when walking outside on first screen. Same as Descent. DosBox will unfreeze when resetting Teensy. Epic: Low volume probably due to my interpretation of the volume control Simon the sorcerer - Very low volume. Not sure if this is due to my code since Adlib DRO exports have the same issue.

[saschaamend]

There was missing the usb_names.h in the lib.

Got this Error:

**_Arduino: 1.8.5 (Windows 10), TD: 1.42, Board: "Teensy++ 2.0, MIDI, 16 MHz, US English"

In file included from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.cpp:49:0:

C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.h:19:0: warning: "ARDUINO" redefined

define ARDUINO 0

^

:0:0: note: this is the location of the previous definition In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Stream.h:24:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:6, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\user\AppData\Local\Temp\arduino_build_815943/pch/Arduino.h:1, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.h:76, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:21: error: 'Printable' does not name a type size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:91:23: error: 'Printable' does not name a type size_t println(const Printable &obj) { return obj.printTo(*this) + println(); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::print(int, int)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:65:65: error: call of overloaded 'print(int&)' is ambiguous size_t print(int n, int base) { return (base == 10) ? print(n) : printNumber(n, 0, base); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:65:65: note: candidates are: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:53:9: note: size_t Print::print(const String&) size_t print(const String &s); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:54:9: note: size_t Print::print(char) size_t print(char c) { return write((uint8_t)c); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: size_t Print::print(const char*) size_t print(const char s[]) { return write(s); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: no known conversion for argument 1 from 'int' to 'const char*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: size_t Print::print(const __FlashStringHelper*) size_t print(const __FlashStringHelper *f); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: no known conversion for argument 1 from 'int' to 'const __FlashStringHelper*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:58:9: note: size_t Print::print(uint8_t) size_t print(uint8_t b) { return printNumber(b, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:59:9: note: size_t Print::print(int) size_t print(int n) { return print((long)n); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:60:9: note: size_t Print::print(unsigned int) size_t print(unsigned int n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:61:9: note: size_t Print::print(long int) size_t print(long n); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:62:9: note: size_t Print::print(long unsigned int) size_t print(unsigned long n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:70:9: note: size_t Print::print(double, int) size_t print(double n, int digits = 2) { return printFloat(n, digits); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:9: note: size_t Print::print(const int&) size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::print(const int&)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:51: error: request for member 'printTo' in 'obj', which is of non-class type 'const int' size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::println(int)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:79:43: error: call of overloaded 'print(int&)' is ambiguous size_t println(int n) { return print(n) + println(); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:79:43: note: candidates are: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:53:9: note: size_t Print::print(const String&) size_t print(const String &s); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:54:9: note: size_t Print::print(char) size_t print(char c) { return write((uint8_t)c); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: size_t Print::print(const char*) size_t print(const char s[]) { return write(s); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: no known conversion for argument 1 from 'int' to 'const char*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: size_t Print::print(const __FlashStringHelper*) size_t print(const __FlashStringHelper *f); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: no known conversion for argument 1 from 'int' to 'const __FlashStringHelper*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:58:9: note: size_t Print::print(uint8_t) size_t print(uint8_t b) { return printNumber(b, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:59:9: note: size_t Print::print(int) size_t print(int n) { return print((long)n); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:60:9: note: size_t Print::print(unsigned int) size_t print(unsigned int n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:61:9: note: size_t Print::print(long int) size_t print(long n); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:62:9: note: size_t Print::print(long unsigned int) size_t print(unsigned long n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:70:9: note: size_t Print::print(double, int) size_t print(double n, int digits = 2) { return printFloat(n, digits); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:9: note: size_t Print::print(const int&) size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::println(const int&)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:91:53: error: request for member 'printTo' in 'obj', which is of non-class type 'const int' size_t println(const Printable &obj) { return obj.printTo(*this) + println(); } ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\user\AppData\Local\Temp\arduino_build_815943/pch/Arduino.h:1, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.h:76, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h: At global scope: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:316:15: error: conflicting return type specified for 'virtual void usb_serial_class::write(uint8_t)' virtual void write(uint8_t); ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Stream.h:24:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:6, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\user\AppData\Local\Temp\arduino_build_815943/pch/Arduino.h:1, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.h:76, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:47:17: error: overriding 'virtual size_t Print::write(uint8_t)' virtual size_t write(uint8_t b) = 0; ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:25:0, from C:\Users\user\AppData\Local\Temp\arduino_build_815943/pch/Arduino.h:1, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.h:76, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/HardwareSerial.h:25:15: error: conflicting return type specified for 'virtual void HardwareSerial::write(uint8_t)' virtual void write(uint8_t); ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Stream.h:24:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:6, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\user\AppData\Local\Temp\arduino_build_815943/pch/Arduino.h:1, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.h:76, from C:\Users\user\AppData\Local\Temp\arduino_build_815943\sketch\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:47:17: error: overriding 'virtual size_t Print::write(uint8_t)' virtual size_t write(uint8_t b) = 0; ^ Fehler beim Kompilieren für das Board Teensy++ 2.0._**

[pioneerman2k1]

i got the same Error Message. I updated all libs, but got this error, too

[pioneerman2k1]

Arduino: 1.8.5 (Windows 10), TD: 1.42, Board: "Teensy++ 2.0, MIDI, 16 MHz, US English"

In file included from C:\Users\Pione\OneDrive\Desktop\ArduinoOPL2-teensy_midi\examples\TeensyMidi\TeensyMidi.ino:19:0:

C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src/OPL2.h:19:0: warning: "ARDUINO" redefined

define ARDUINO 0

^

:0:0: note: this is the location of the previous definition In file included from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.cpp:49:0: C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.h:19:0: warning: "ARDUINO" redefined #define ARDUINO 0 ^ :0:0: note: this is the location of the previous definition In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Stream.h:24:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:6, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\Pione\AppData\Local\Temp\arduino_build_181674/pch/Arduino.h:1, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.h:76, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:21: error: 'Printable' does not name a type size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:91:23: error: 'Printable' does not name a type size_t println(const Printable &obj) { return obj.printTo(*this) + println(); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::print(int, int)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:65:65: error: call of overloaded 'print(int&)' is ambiguous size_t print(int n, int base) { return (base == 10) ? print(n) : printNumber(n, 0, base); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:65:65: note: candidates are: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:53:9: note: size_t Print::print(const String&) size_t print(const String &s); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:54:9: note: size_t Print::print(char) size_t print(char c) { return write((uint8_t)c); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: size_t Print::print(const char*) size_t print(const char s[]) { return write(s); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: no known conversion for argument 1 from 'int' to 'const char*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: size_t Print::print(const __FlashStringHelper*) size_t print(const __FlashStringHelper *f); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: no known conversion for argument 1 from 'int' to 'const __FlashStringHelper*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:58:9: note: size_t Print::print(uint8_t) size_t print(uint8_t b) { return printNumber(b, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:59:9: note: size_t Print::print(int) size_t print(int n) { return print((long)n); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:60:9: note: size_t Print::print(unsigned int) size_t print(unsigned int n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:61:9: note: size_t Print::print(long int) size_t print(long n); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:62:9: note: size_t Print::print(long unsigned int) size_t print(unsigned long n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:70:9: note: size_t Print::print(double, int) size_t print(double n, int digits = 2) { return printFloat(n, digits); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:9: note: size_t Print::print(const int&) size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::print(const int&)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:51: error: request for member 'printTo' in 'obj', which is of non-class type 'const int' size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::println(int)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:79:43: error: call of overloaded 'print(int&)' is ambiguous size_t println(int n) { return print(n) + println(); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:79:43: note: candidates are: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:53:9: note: size_t Print::print(const String&) size_t print(const String &s); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:54:9: note: size_t Print::print(char) size_t print(char c) { return write((uint8_t)c); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: size_t Print::print(const char*) size_t print(const char s[]) { return write(s); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:55:9: note: no known conversion for argument 1 from 'int' to 'const char*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: size_t Print::print(const __FlashStringHelper*) size_t print(const __FlashStringHelper *f); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:56:9: note: no known conversion for argument 1 from 'int' to 'const __FlashStringHelper*' C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:58:9: note: size_t Print::print(uint8_t) size_t print(uint8_t b) { return printNumber(b, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:59:9: note: size_t Print::print(int) size_t print(int n) { return print((long)n); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:60:9: note: size_t Print::print(unsigned int) size_t print(unsigned int n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:61:9: note: size_t Print::print(long int) size_t print(long n); ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:62:9: note: size_t Print::print(long unsigned int) size_t print(unsigned long n) { return printNumber(n, 0, 10); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:70:9: note: size_t Print::print(double, int) size_t print(double n, int digits = 2) { return printFloat(n, digits); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:71:9: note: size_t Print::print(const int&) size_t print(const Printable &obj) { return obj.printTo(*this); } ^ C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h: In member function 'size_t Print::println(const int&)': C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:91:53: error: request for member 'printTo' in 'obj', which is of non-class type 'const int' size_t println(const Printable &obj) { return obj.printTo(*this) + println(); } ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\Pione\AppData\Local\Temp\arduino_build_181674/pch/Arduino.h:1, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.h:76, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h: At global scope: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:316:15: error: conflicting return type specified for 'virtual void usb_serial_class::write(uint8_t)' virtual void write(uint8_t); ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Stream.h:24:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:6, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\Pione\AppData\Local\Temp\arduino_build_181674/pch/Arduino.h:1, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.h:76, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:47:17: error: overriding 'virtual size_t Print::write(uint8_t)' virtual size_t write(uint8_t b) = 0; ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:25:0, from C:\Users\Pione\AppData\Local\Temp\arduino_build_181674/pch/Arduino.h:1, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.h:76, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/HardwareSerial.h:25:15: error: conflicting return type specified for 'virtual void HardwareSerial::write(uint8_t)' virtual void write(uint8_t); ^ In file included from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Stream.h:24:0, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/../usb_midi/usb_api.h:6, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/usb_api.h:10, from C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/WProgram.h:22, from C:\Users\Pione\AppData\Local\Temp\arduino_build_181674/pch/Arduino.h:1, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.h:76, from C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi\src\OPL2.cpp:49: C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores\teensy/Print.h:47:17: error: overriding 'virtual size_t Print::write(uint8_t)' virtual size_t write(uint8_t b) = 0; ^ Mehrere Bibliotheken wurden für "OPL2.h" gefunden Benutzt: C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi Nicht benutzt: C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-master Fehler beim Kompilieren für das Board Teensy++ 2.0. Dieser Bericht wäre detaillierter, wenn die Option "Ausführliche Ausgabe während der Kompilierung" in Datei -> Voreinstellungen aktiviert wäre.

[DhrBaksteen]

@saschaamend Hmm surprising that it's complaining about usb_names.h missing. It's also not there in the Teensy example code where I copied it from. My suspicion is that the line should've been #include <usb_names.h> and I was just lucky with the IDE helping out in resolving the file.

After searching for the file I found it in the Teensy3 folder. It does not look specific to Teensy 3.0 or later, so if changing the include is not helping then maybe including this header in the lib will help? Worst case is that it really is only for 3.0 and later (I'm using a Teensy 3.6) in which case I need to make some more modifications.

@pioneerman2k1 From Mehrere Bibliotheken wurden für "OPL2.h" gefunden Benutzt: C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-teensy_midi Nicht benutzt: C:\Users\Pione\Documents\Arduino\libraries\ArduinoOPL2-master it looks like you have two versions of the library in the libraries folder. The Arduino IDE does not like that. Try moving out the master and only leave this branch in there. Could that also be the case for you @saschaamend ?

I will push some changes soon that will hopefully fix the usb_names issue and also get rid of a warning. Thanks for the feedback it is very helpful!

[pioneerman2k1]

i followed the instructions, but still get this error. I also tried it on the Notebook of my wife with a clean install of Arduino IDE. The same error Message..

[saschaamend]

With the new brench it workt for me. This evening i will test some of my favorite Dos Games..

[DhrBaksteen]

Excellent!

@pioneerman2k1 I tried to reprodce your issue for a bit, but no 'luck' so far... So maybe the latest commit also fixes your issue automagically

[pioneerman2k1]

I cant get any sound from it.. The Code work for me, but with teensy ++ 2.0 no sound at all I also tried the DemoTune.ino with no luck. Maybe the teensy ++ 2.0 has a different pinout?

https://ibb.co/dMo1Ey

• OPL2 board is connected as follows:
• Pin 8 - Reset (Use Teensy ++ 2.0 Pin E0)
• Pin 9 - A0 (Use Teensy ++ 2.0 Pin E1)
• Pin 10 - Latch (Use Teensy ++ 2.0 Pin C0)
• Pin 11 - Data (Use Teensy ++ 2.0 Pin C1)
• Pin 13 - Shift (Use Teensy ++ 2.0 Pin C3)

Am I correct with this?

btw. i am using Abelton Live 9 to test my Teensy Midi device. With the SN76489 it works fine.

[pioneerman2k1]

Same for me.. Wireing is correct but no sound. I ordered an Teensy LC. It is the low cost model but has more capabilities than the ++ 2.0

[DhrBaksteen]

Looking at the pinout for the Teensy ++2.0 it looks like hardware SPI is not on pins 11 - 13. https://www.pjrc.com/teensy/td_libs_SPI.html

Can you give the following a try? Reset = E0 A0 = E1 Latch = C0 Data = B2 Shift = B1

[pioneerman2k1]

Cant believe it, but it does work for me happy

[DhrBaksteen]

Teensy support has been added to the library and released as v1.4.2

• Added support for MIDI
• Teensy specific examples when SD card is required
• Updated documentation

Closing this issue.