MSP430--UART模块

//发送和接受使能及其中断使能
ME1 |= UTXE0 + URXE0;// Enable USART0 TXD/RXD
IE1 |= URXIE0;// Enable USART0 RX interrupt

_BIS_SR(LPM0_bits + GIE);// Enter LPM0 w/ interrupt
}

#pragma vector=UART0RX_VECTOR
__interrupt void usart0_rx (void)
{
while (!(IFG1 & UTXIFG0));// USART0 TX buffer ready?
TXBUF0 = RXBUF0;// RXBUF0 to TXBUF0
}