Freescale Shrinks World’s Smallest ARM-Based MCU by 15%(media.freescale.com)

  void setup_code() {
    // configure SPI
    // analog to digital converters
    // timers
    // fix internal and external buggy hardware
  }

  void interrupt_handler() {
    TURN_OFF_INTERRUPTS;
    // packet recv
    // time expired
    // etc
    TURN_ON_INTERRUPTS;
  }


  setup_code();
  register_interrupt_handler(interrupt_handler);
  while(1) {
    // application code
  }