Sending over Serial on Atmega32u4

[YannChansigaud]

Hello,

I'm currently developping on Atmega32u4 (Arduino Leonardo).
I encounter a problem when sending data with Serial.write() arduino fonction.
If I activate the bridge first and directly on HairLess, the outgoing data from atmega32u4 serial to midi virtual driver doesn't works.
I need to open and close a serial connexion first (with Serial monitor from Arduino or any other serial RealTerm-like software).

Are you sure you properly open Serial communication between Serial and Midi-out ?
Do you know any Arduino instruction to set the serial send active ?

Thanks anyway.