Microcontroller MSP430 - Timer_A timer interrupt program

1. Use the timer timing function to realize the timer single overflow interrupt and realize P3.0 square wave output

#include "cc430x613x.h"  

void main()  

{  

    WDTCTL = WDTPW + WDTHOLD; // Stop the watchdog timer  

    P3DIR |= 0x04; // Initialize P3 port and set it to output mode  

    TA0CCR0 = 32768; // Define the interrupt counting period as 1s, the clock frequency is 32.768MHZ, 32768 / 32768 = 1s  

    TA0CCTL0 = CCIE; //TA0CCR0 capture/compare interrupt register interrupt enable  

    TA0CTL = TASSEL_1 + MC_1 + TACLR; // TASSEL_1, ACLK clock source MC_1, up counting mode  

    _BIS_SR(LPM3_bits + GIE); // Enter LPM3 low power mode and enable general interrupt  

}  

#pragma vector = TIMER0_A0_VECTOR  

__interrupt void Timer_A(void) // Timer interrupt trigger, P3 output port XOR, level flip  

{                   

    P3OUT ^= 0x04;  

}  

2. Use the timer timing function to realize multiple timer overflows, generate multiple interrupts accordingly, and realize P3.0 output

#include "cc430x613x.h"  

void main()  

{  

    WDTCTL = WDTPW + WDTHOLD; // Stop the watchdog timer  

    P3DIR |= 0x04; // Initialize P3 port and set it to output mode  

    TA0CCR0 = 32768; // Define the interrupt counting period as 1s, the clock frequency is 32.768MHZ, 32768 / 32768 = 1s  

    TA0CCTL0 = CCIE; //TA0CCR0 capture/compare interrupt register interrupt enable  

    TA0CCR1 = 3276; //Define interrupt overflow period 100ms  

    TA0CCTL1 = CCIE; //TA0CCR0 capture/compare interrupt register interrupt enable  

    TA0CTL = TASSEL_1 + MC_1 + TACLR; // TASSEL_1, ACLK clock source MC_1, up counting mode  

    _BIS_SR(LPM3_bits + GIE); // Enter LPM3 low power mode and enable general interrupt  

}  

#pragma vector = TIMER0_A0_VECTOR  

__interrupt void Timer_A(void) // 1s overflow interrupt  

{                   

    P3OUT = ~0x04;  

}  

#pragma vector = TIMER0_A1_VECTOR  

__interrupt void Timer_A1(void) // 100ms overflow interrupt  

{  

    switch(TA0IV)  

    {  

        case 2:P3OUT = 0x04;break;  

        case 4:break;  

        case 10:break;  

    }  

}