radio.setGPIO(2, port1, CC2520_FIFOP);
radio.setGPIO(4, port2, CC2520_SFD);
((USARTSource) usart0).addUSARTListener(this);
} else {
throw new EmulationException("Could not setup wismote mote - missing USCI B0");
}
leds = new Leds(cpu, LEDS);
button = new Button("Button", cpu, port1, BUTTON_PIN, true);
IOUnit usart = cpu.getIOUnit("USCI A1");