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1__playing_arpeggios.ino
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1__playing_arpeggios.ino
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#include <Controlino.h>
#include <Midier.h>
namespace arpeggino
{
namespace state
{
midier::Layers<8> layers; // the number of layers chosen will affect the global variable size
midier::Sequencer sequencer(layers);
} // state
namespace handle
{
void keys()
{
// we extend `controlino::Key` so we could hold a Midier handle with every key
struct Key : controlino::Key
{
Key(char pin) : controlino::Key(pin)
{}
midier::Sequencer::Handle h;
};
static Key __keys[] = { 2, 3, 4, 5, 6, 7, 8, 9 }; // initialize with pin numbers
for (auto i = 0; i < sizeof(__keys) / sizeof(Key); ++i)
{
auto & key = __keys[i];
const auto event = key.check();
if (event == Key::Event::None)
{
continue; // nothing has changed
}
if (event == Key::Event::Down) // a key was pressed
{
key.h = state::sequencer.start(i + 1); // start playing an arpeggio of the respective scale degree
}
else if (event == Key::Event::Up) // a key was released
{
state::sequencer.stop(key.h); // stop playing the arpeggio
}
}
}
void click()
{
// actually click Midier for it to play the MIDI notes
state::sequencer.click(midier::Sequencer::Run::Async);
}
} // handle
extern "C" void setup()
{
// initialize the Arduino "Serial" module and set the baud rate
// to the same value you are using in your software.
// if connected physically using a MIDI 5-DIN connection, use 31250.
Serial.begin(9600);
}
extern "C" void loop()
{
handle::keys();
handle::click();
}
} // arpeggino