msp430 f5529寄存器 串口发送接收

使用的开发板是官方的ti msp430f5529lp 基于官方的例程进行的改动

新增了发送字符串函数 同时可以中断接收 接下来看代码展示

#include <msp430.h>
volatile unsigned int i;


void senfchar(char s)
{
          
   
    UCA0TXBUF=s;
    while(!(UCA0IFG&UCTXIFG));
}

void sendstring(unsigned char *p)
{
          
   
    while(*p!=)
    {
          
   
        while(!(UCA0IFG&UCTXIFG));
        UCA0TXBUF=*p++;

    }
}
void delay()
{
          
   
    for(i=50000;i>0;i--);
}


int main(void)
{
          
   

  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  P3SEL = BIT3+BIT4;                        // P3.4,5 = USCI_A0 TXD/RXD
  UCA0CTL1 |= UCSWRST;                      // **Put state machine in reset**
  UCA0CTL1 |= UCSSEL_2;                     // SMCLK
  UCA0BR0 = 6;                              // 1MHz 9600 (see Users Guide)
  UCA0BR1 = 0;                              // 1MHz 9600
  UCA0MCTL = UCBRS_0 + UCBRF_13 + UCOS16;   // Modln UCBRSx=0, UCBRFx=0,
                                            // over sampling
  UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**
  UCA0IE |= UCRXIE;                         // Enable USCI_A0 RX interrupt
  sendstring("hello world
");
  _EINT();
//  __bis_SR_register(LPM0_bits + GIE);       // Enter LPM0, interrupts enabled
//  __no_operation();                         // For debugger


  while(1)
  {
          
   
      sendstring("hello world
");
      delay();

  }

}

// Echo back RXed character, confirm TX buffer is ready first
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCI_A0_VECTOR
__interrupt void USCI_A0_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USCI_A0_VECTOR))) USCI_A0_ISR (void)
#else
#error Compiler not supported!
#endif
{
          
   
  switch(__even_in_range(UCA0IV,4))
  {
          
   
  case 0:break;                             // Vector 0 - no interrupt
  case 2:                                   // Vector 2 - RXIFG
    while (!(UCA0IFG&UCTXIFG));             // USCI_A0 TX buffer ready?
    UCA0TXBUF = UCA0RXBUF;                  // TX -> RXed character
    break;
  case 4:break;                             // Vector 4 - TXIFG
  default: break;
  }
}