Method keypad

examples/AllProtocolsOnLCD/LiquidCrystal_I2C.hpp:361–363

    return 0;
}
uint8_t LiquidCrystal_I2C::keypad() {
    return 0;
}
uint8_t LiquidCrystal_I2C::init_bargraph(uint8_t graphtype) {
    return 0;
}