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# Host: MIDI 2.0
A minimal USB host example that receives MIDI from a connected USB-MIDI device and prints it over the debug UART, using the USB-MIDI 2.0 host driver (UMP).
## What it does
- Enumerates USB-MIDI devices (`CFG_TUH_MIDI2`) and, on mount, prints the negotiated protocol (MIDI 1.0 / MIDI 2.0) and the number of RX/TX cables.
- Receives Universal MIDI Packets (UMP) and prints each one, decoding common Channel Voice messages — Note On/Off, Control Change, Program Change, Channel Pressure, Pitch Bend — for both MIDI 2.0 and MIDI 1.0 message types, and falling back to a raw hex dump for anything else.
## Requirements
The board must support USB host mode (provide VBUS to the connected device); some boards need an external USB-A port / host adapter.
## Configuration
Notable `tusb_config.h` settings:
```c
#define CFG_TUH_ENABLED 1
#define CFG_TUH_HUB 1
#define CFG_TUH_DEVICE_MAX (3*CFG_TUH_HUB + 1)
#define CFG_TUH_MIDI2 CFG_TUH_DEVICE_MAX
#define CFG_TUH_MIDI2_RX_BUFSIZE 512
#define CFG_TUH_MIDI2_TX_BUFSIZE 512
```
## Building
CMake:
```bash
mkdir build && cd build
cmake -DBOARD=raspberry_pi_pico ..
cmake --build .
```
Make:
```bash
make BOARD=raspberry_pi_pico all
```
## How to use
Plug a USB-MIDI device (keyboard, controller, or interface) into the board's USB host port. On attach the debug UART prints the mount/descriptor info; then playing notes or moving controls on the device prints the decoded MIDI messages.
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