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发表于 2010-9-17 13:03:03
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晕,从程序来看你只是不断的发送数据,没有接收,要是接收的话,得加个接收中断函数才可以
算了,给你个例程代码看看吧
#include "msp430x24x.h"
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P1DIR = 0xFF; // All P1.x outputs
P1OUT = 0; // All P1.x reset
P2DIR = 0xFF; // All P2.x outputs
P2OUT = 0; // All P2.x reset
P3SEL = 0x0C0; // P3.6,7 = USCI_A1 TXD/RXD
P3DIR = 0xFF; // All P3.x outputs
P3OUT = 0; // All P3.x reset
P4DIR = 0xFF; // All P4.x outputs
P4OUT = 0; // All P4.x reset
P5DIR = 0xFF; // All P5.x outputs
P5OUT = 0; // All P5.x reset
P6DIR = 0xFF; // All P6.x outputs
P6OUT = 0; // All P6.x reset
UCA1CTL1 |= UCSSEL_1; // CLK = ACLK
UCA1BR0 = 0x03; // 32kHz/9600 = 3.41
UCA1BR1 = 0x00; //
UCA1MCTL = UCBRS1 + UCBRS0; // Modulation UCBRSx = 3
UCA1CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UC1IE |= UCA1RXIE; // Enable USCI_A1 RX interrupt
__bis_SR_register(LPM3_bits + GIE); // Enter LPM3, interrupts enabled
}
// Echo back RXed character, confirm TX buffer is ready first
#pragma vector=USCIAB1RX_VECTOR
__interrupt void USCI1RX_ISR(void)
{
while (!(UC1IFG&UCA1TXIFG)); // USCI_A1 TX buffer ready?
UCA1TXBUF = UCA1RXBUF; // TX -> RXed character
}
msp430x24x例程代码ourdev_583785BBWTAA.zip(文件大小:432K) (原文件名:slac149e.zip) |
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