msp-exp-430f5529程序

ID:283860 · 发表于 2018-4-5 20:45

#include <msp430f5529.h>
void UART_Init(void);
void putchar(unsigned char c);
void putstring(unsigned char *s);
int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                // Stop WDT
   P1DIR|=BIT0;
   P1OUT|=BIT0;
  UART_Init();
//putchar('s');
  //__bis_SR_register(LPM0_bits + GIE);    // Enter LPM0, interrupts enabled
  //__no_operation();                      // For debugger
  while(1)
  {

   // putchar('s');
//  __delay_cycles(10000);
  }

}

#pragma vector=USCI_A1_VECTOR
__interrupt void USCI_A1_ISR(void)

{
while (!(UCA1IFG&UCTXIFG));          // USCI_A0 TX buffer ready?
UCA1TXBUF = UCA1RXBUF;                // TX -> RXed character
UCA1IFG&=~UCTXIFG;
P1OUT^=BIT0;
}

void UART_Init(void)
{
   P4SEL |= BIT4+BIT5;                      // P3.3,4 = USCI_A0 TXD/RXD
   UCA1CTL1 |= UCSWRST;                   // **Put state machine in reset**澶嶄綅浣胯兘
   UCA1CTL1 |= UCSSEL_2;                   // SMCLK 閫夊彇SMLK鏃堕挓
   UCA1BR0 = 9;                            // 1MHz 115200 (see User's Guide)1M/115200=8.68锛屽洓鑸嶄簲鍏ヤ负9
   UCA1BR1 = 0;                            // 1MHz 115200 楂樺叓浣嶄负闆?    UCA1MCTL |= UCBRS_1 + UCBRF_0;          // Modulation UCBRSx=1, UCBRFx=0
   UCA1CTL1 &= ~UCSWRST;                   // **Initialize USCI state machine**
   UCA1IE |= UCRXIE;                      // Enable USCI_A0 RX interrupt
   _EINT();
}

void putchar(unsigned char c)
{
while (!(UCA1IFG&UCTXIFG));
      UCA1TXBUF = c;
      UCA1IFG&=~UCTXIFG;
}

void putstring(unsigned char *s)
{
while((*s)!='@')
{
putchar(*s);
s++;
}

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