text: 
  #pragma once
  
  #include "mcp23017.hpp"
  
  class Backlight
  {
    public:
      Backlight(MCP23017 & _mcp) : mcp(_mcp) {}
      bool setup();
      void setBacklight(uint8_t _v);
      void backlight(bool _e);
  
    private:
      MCP23017 & mcp;
  
      const MCP23017::Pin BACKLIGHT_EN = MCP23017::Pin::IOPIN_11;
  };
  