Midi Merge / Midi Thru introduce noticebale latency

[garubi]

No description provided.

[garubi]

Probably we should refactor the code in the loop, but first we could try some things:

• check if all that SerialPrint have something to do with it
  -- try faster baudrate
  -- remove all the serialprint() (maybe use something like
  `#define DEBUG false

// conditional debugging
#if DEBUG

#define beginDebug() do { Serial.begin (115200); } while (0)
#define Trace(x) Serial.print (x)
#define Trace2(x,y) Serial.print (x,y)
#define Traceln(x) Serial.println (x)
#define Traceln2(x,y) Serial.println (x,y)
#define TraceFunc() do { Serial.print (F("In function: ")); Serial.println (PRETTY_FUNCTION); } while (0)

#else
#define beginDebug() ((void) 0)
#define Trace(x) ((void) 0)
#define Trace2(x,y) ((void) 0)
#define Traceln(x) ((void) 0)
#define Traceln2(x,y) ((void) 0)
#define TraceFunc() ((void) 0)
#endif // DEBUG`

[garubi]

maybe try to enable running status in the MIDI library

https://github.com/FortySevenEffects/arduino_midi_library/wiki/Using-custom-Settings

[garubi]

lot of interesting info about the midi ibrary here:
FortySevenEffects/arduino_midi_library#71

[garubi]

Greatly reduced the latency.
It's well playable with piano and fast-attack sounds too.
We can close this.