NoteButtonMatrix.hpp

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#pragma once
 
#include <MIDI_Outputs/Abstract/MIDIButtonMatrix.hpp>
#include <MIDI_Senders/DigitalNoteSender.hpp>
 
BEGIN_CS_NAMESPACE
 
/**
 * @brief   A class of MIDIOutputElement%s that read the input from a **matrix
 *          of momentary push buttons or switches**, and send out MIDI **Note**
 *          events.
 * 
 * A Note On event is sent when a button is pressed, and a Note Off event is 
 * sent when a button is released.  
 * Crude software debouncing is implemented by limiting the refresh rate.  
 * This version cannot be banked.  
 *
 * @ingroup MIDIOutputElements
 * 
 * @tparam  nb_rows
 *          The number of rows of the matrix.
 * @tparam  nb_cols
 *          The number of columns of the matrix.
 */
template <uint8_t nb_rows, uint8_t nb_cols>
class NoteButtonMatrix
    : public MIDIButtonMatrix<DigitalNoteSender, nb_rows, nb_cols> {
  public:
    /**
     * @brief   Create a new NoteButtonMatrix object with the given pins,
     *          note numbers and channel.
     *
     * @param   rowPins
     *          A list of pin numbers connected to the rows of the button
     *          matrix.  
     *          **⚠** These pins will be driven LOW as outputs (Lo-Z).
     * @param   colPins
     *          A list of pin numbers connected to the columns of the button
     *          matrix.  
     *          These pins will be used as inputs (Hi-Z), and the
     *          internal pull-up resistor will be enabled.
     * @param   notes
     *          A 2-dimensional array of the same dimensions as the button
     *          matrix that contains the note number of each button. [0, 127]
     * @param   channelCN
     *          The MIDI channel [1, 16] and Cable Number [0, 15].
     * @param   velocity
     *          The velocity of the MIDI Note events.
     */
    NoteButtonMatrix(const PinList<nb_rows> &rowPins,
                     const PinList<nb_cols> &colPins,
                     const AddressMatrix<nb_rows, nb_cols> &notes,
                     MIDICNChannel channelCN = {CHANNEL_1, 0},
                     uint8_t velocity = 0x7F)
        : MIDIButtonMatrix<DigitalNoteSender, nb_rows, nb_cols>{
              rowPins, colPins, notes, channelCN, {velocity},
          } {}
 
    /// Set the velocity of the MIDI Note events.
    void setVelocity(uint8_t velocity) { this->sender.setVelocity(velocity); }
    /// Get the velocity of the MIDI Note events.
    uint8_t getVelocity() const { return this->sender.getVelocity(); }
};
 
END_CS_NAMESPACE