#include "cc430x613x.h"
#include "stdint.h"
uint8_t data[4]={0x00};
void main(void){
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
PMAPPWD = 0x02D52; // Get write-access to port mapping regs
P2MAP6 = PM_UCA0RXD; // Map UCA0RXD output to P2.6
P2MAP7 = PM_UCA0TXD; // Map UCA0TXD output to P2.7
PMAPPWD = 0; // Lock port mapping registers
P1DIR |= BIT6; // Set P2.7 as TX output
P1SEL |= BIT5 + BIT6; // Select P2.6 & P2.7 to UART function
UCA0CTL1 |= UCSWRST; // **Put state machine in reset**
UCA0CTL1 |= UCSSEL_1; // CLK = ACLK
UCA0BR0 = 0x03; // 32kHz/9600=3.41 (see User's Guide)
UCA0BR1 = 0x00; //
UCA0MCTL = UCBRS_3+UCBRF_0; // Modulation UCBRSx=3, UCBRFx=0
UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UCA0IE |= UCRXIE; // Enable USCI_A0 RX interrupt
__bis_SR_register(LPM3_bits + GIE); // Enter LPM3, interrupts enabled
__no_operation(); // For debugger
__no_operation();
}
// Echo back RXed character, confirm TX buffer is ready first
#pragma vector=USCI_A0_VECTOR
__interrupt void USCI_A0_ISR(void)
{
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?
data[0]= UCA0RXBUF; // TX -> RXed character
UCA0IE= 0x00;
break;
case 4:break; // Vector 4 - TXIFG
default: break;
}
__bic_SR_register(LPM3_bits); // Enter LPM3, interrupts enabled
}
我使用这段程序可以顺利进入中断,在串口调试助手发过来数也能进入数组,但是似乎无法跳出中断执行到断点处,如图
求大虾指点我程序中的问题
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