msp430f149-

MSP430F149实验板实验代码

/*****************************************************
程序功能：在屏幕上显示www.22sky.com
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通信格式：N.8.1, 9600
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测试说明：打开串口调试助手，正确设置通信格式，观察屏幕
******************************************************/
#include<msp430x14x.h>
#define uchar unsigned char
#define uint unsigned int
//uchar data[10] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09};
uchar data[] = {'w','w','w','.','2','2','s','k','y','.','c','o','m','\n'};
uchar j=0;
uchar k=0;
delay ()
{
  uchar n;
  for(n=100;n>0;n--)
  {
    ;
  }
}
void initsys(void)
{
  BCSCTL1 &= ~XT2OFF;
  uchar i;
  do
  {
    IFG1 &= ~OFIFG;
    for(i=0xee;i>0;i--)
    {
      ;
    }
  }
  while((IFG1&OFIFG)!=0);    
  BCSCTL2 |= SELM_2 + SELS;       
}
void set()
{
  U0CTL |= SWRST;      //开启设置
  U0TCTL = SSEL1;   //选择 SMCLK=6M        波特率=9600
  /* 6M / 9600 = 625       625 = 0x0271     0.000 * 8= 0*/
  /* 32768/9600=3.4133    0.4133*8=4*/
  U0BR0 = 0x41;         
  U0BR1 = 0x03;
  U0MCTL =0x00;     //00000000
  U0CTL |= CHAR;       //长度8位
  U0CTL &= ~SWRST;
 
}
void send(uchar num)
{
  
  TXBUF0 = num;
  while((IFG1&UTXIFG0)==0); 
}
void receive()
{
  //P2DIR |= 0xff;
  IFG1 &= 0xbf;
  j = RXBUF0;
  P2OUT = j;
}
void main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  initsys();
  P3DIR |= 0x10;
  P2DIR |= 0xff;
  P2OUT = 0x00;
  P3SEL |= 0x30; 
  set();
  ME1 |= UTXE0 + URXE0;
  IE1 |= URXIE0;
  
  _EINT();
 /* 
 for(k=0;k<255;k++)
  {
    send(k);
    //delay();
  }*/
  for(k=0;k<15;k++)
  {
    send(data[k]);
  }
  while(1);
}
#pragma vector=UART0TX_VECTOR
__interrupt void usart_tx(void)
{
  while((IFG1&URXIFG0)==1);
  delay();
}
#pragma vector=UART0RX_VECTOR
__interrupt void usart0_rx (void)
{ 
 // while((IFG1&URXIFG0)==0);    //UTXIFG0默认1    R默认0
  if((U0RCTL & RXERR)==0)
   {
     receive();
     delay();
   }
  else
  {
    U0RCTL &= ~(FE + OE + BRK);
  }
  //while((IFG1&URXIFG0)==0);
}