LED red      P1.0
LED yellow   P1.1


Serial port  UCA1


CC2420 SPI   UCB0

CC2420 CSN   P3.0 (UBE0STE)
CC2420 MOSI  P3.1 (UCB0SIMO/SDA)
CC2420 MISO  P3.2 (UCB0SOMI/SCL)
CC2420 SCK   P3.3 (UCB0CLK/STE)

CC2420 FIFOP P1.6
CC2420 FIFO  P1.5
CC2420 CCA   P1.7
CC2420 SFD   P1.3
CC2420 VREN  P1.4
CC2420 RESET P1.2


Button 1     P2.6
