and add a DIN5 midi Out to the Esp32. ...and had a problem
What i am try to do is sending Midi data out of my PC (Synthmata app on chrome) to a Volca Korg, using midi ble
1/ I'm MIDIBERRY to connect it all. PC To MIDI LOOP IN? in MIDI BERRY. MIDI out to Control surface (the Midi BLE interface, conneceted in bluetooth, and detected by midi Berry).
2/ When i'm switching things on Synthmata (PC), the monitors shows Midi In data. Fine. The Esp32 is blinking, so there are midi data transmitted to ESP32. fine.
3/ The problem is with the midi DIN5 Out, added through a bread board to the ESP32.
So far, my circuit seems fine. It's not very complicated, even for me.
But Esp32 is working with 3.3V.
4/ I've tried with a 3.3V supply, and connected to the USB of the computer.
5/ I've read that Midi protocol need differents value for resistors. I've tried that. Nothing.
6/ I've found that Esp32 as a 5V out pin. I've tried it with the same resistors values, and the "normal" one. Nothing
I would guess that the reason you're not getting any replies is that there's too little information in your post to tell what the problem is.
You'll have to narrow it down: replace the HardwareSerialMIDI_Interface by a USBDebugMIDI_Interface and check the Serial monitor to be sure that the BLE part is working as expected. If that works, you'll have to check the serial port wiring and hardware again, perhaps perform a serial loopback test, etc.