Initialization

Initialize Feelix globally in scope

Feelix feelix = Feelix();

Initialize Feelix in setup

void init(State _state = State::NO_COMMUNICATION, uint8_t I2C_ADDRESS = 0x70);

enum State {
    NO_COMMUNICATION  = 0, 
    SPI_MASTER        = 1,
    SPI_SLAVE         = 2,
    I2C_MASTER        = 3,
    I2C_SLAVE         = 4
};