MSP430G2553 - DS18B20 - 串口通信

}

while(i); Skip(); Read_SP();

return ReadTemp()*0.0625; }

/******************************************************************************* 函数名称：void main( void ) 功 能：主函数

*******************************************************************************/ void main( void ) {

WDTCTL = WDTPW + WDTHOLD; // Stop WDT if(CALBC1_1MHZ==0xFF) // If calibration constant erased {

while(1); // do not load, trap CPU!! }

DCOCTL = 0; // Select lowest DCOx and MODx settings BCSCTL1 = CALBC1_1MHZ; // Set DCO DCOCTL = CALDCO_1MHZ;

P1SEL = BIT1 + BIT2 ; // P1.1 = RXD, P1.2=TXD P1SEL2 = BIT1 + BIT2 ; // P1.1 = RXD, P1.2=TXD UCA0CTL1 |= UCSSEL_2; // SMCLK UCA0BR0 = 104; // 1MHz 9600 UCA0BR1 = 0; // 1MHz 9600

UCA0MCTL = UCBRS0; // Modulation UCBRSx = 1

UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine** IE2 |= UCA0RXIE; // Enable USCI_A0 RX interrupt

__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, interrupts enabled }

// Echo back RXed character, confirm TX buffer is ready first #pragma vector=USCIAB0RX_VECTOR __interrupt void USCI0RX_ISR(void) {

while (!(IFG2&UCA0TXIFG)); // USCI_A0 TX buffer ready? UCA0TXBUF = Do1Convert(); // TX -> RXed character }