hello.ftdi.45.port.c: C, writing directly to port
      72 bytes code size
      0.2 us bit time
      1.2 us loop time
   
   hello.ftdi.45.port.ino: Arduino, writing directly to port
      296 bytes code size
      0.2 us bit time
      1.5 us loop time
   
   hello.ftdi.45.port.write.ino: Arduino, digitalWrite pin interface
      512 bytes code size
      7.8 us bit time
      30.8 us loop time