void main(void){  // initialize SSP  SSP0CPSR = 0x02;  // SSP max speed  SSP0CR0 = 0x07;  // SSP max speed, 8 bits  SSP0CR1 = 0x02;  // SSP master mode  PINSEL1 = 0x2A8;  // SSP mode for pins P0.17 to P0.20  while(1)  {    // send two bytes    SSP0DR = 0x55;  // one nice thing about the SSP is that it has a 8-words deep FIFO    SSP0DR = 0x54;  // so here we write the data to be sent without worrying    // now wait until both bytes are sent    while(!(SSP0SR & 0x01));    // now we can read the two bytes received... and do anything with them    int data1 = SSP0DR;    int data2 = SSP0DR;    // ...  }}