# NoteButton

Sends Note On/Off on button press/release.

> Original: `NoteButton.ino`

```cpp pico
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include <cs_midi.h>

using namespace cs;

BluetoothMIDI_Interface midi;

NoteButton button {
    5,                             // push button on GPIO 5
    {MIDI_Notes::C[4], Channel_1}, // note C4, channel 1
};

int main() {
    stdio_init_all();
    if (cyw43_arch_init()) return 1;
    Control_Surface.begin();
    while (true) {
        Control_Surface.loop();
        sleep_ms(1);
    }
}
```