uart115200.c

来自「430串口调试c程序直接转发接收到的任何数据」· C语言 代码 · 共 33 行

#include  <msp430x44x.h>
void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  FLL_CTL0|=XCAP14PF;
  UTCTL0=SSEL1;                     //UCLK=SMCLK
  UBR00=0x09;                       //1M XIA 115200
  UBR10=0x00;                      //
  UMCTL0=0x08;                     //波特率调整
  UCTL0=CHAR;                      //BITE MODE*swrst*
  ME1|=UTXE0+URXE0;               //使能USART0　TXD/RXD　中断
  IE1|=URXIE0;




  //IE1 | = URXIE0;                 //使能  USART0　RX　中断
  P3SEL|=0x30;                    //p3.4 p3.5 as USART0 TXD/RXD
  P3DIR|=0x10;                   //p2.4out
  _EINT();
  for(;;)
  {_BIS_SR(CPUOFF);//LPM0
  _NOP();
     }
}


#pragma vector=UART0RX_VECTOR
__interrupt void usart0_rx (void)
{
  while ((IFG1 & UTXIFG0)==0);                // USART0 TX buffer ready data?
  TXBUF0 = RXBUF0;                          // RXBUF0 to TXBUF0
}