MSP430F149学习之路——捕获/比较模式

 1 #include <msp430x14x.h>
 2 unsigned int last0=0,last1=0;
 3 unsigned int k=0,j=0;
 4 void mian(void)
 5 {
 6   WDTCTL = WDTPW + WDTHOLD;
 7   TACTL  = TACLR + TASSEL_2 + ID_3 + MC_3;
 8   
 9   TACCTL0 = CM_3 + CCIS_0 + SCS + CAP + CCIE;
10   TACCTL1 = CM_3 + CCIS_1 + SCS + CAP + CCIE;
11   
12   P1DIR = 0X00;
13   P1SEL = 0XFF;
14 
15   P3DIR = 0XFF;
16   P3OUT = 0XFF;
17   _EINT();
18   for(;;)
19   {
20     for(int i=0;i<10000;i++)
21       _NOP();
22     P3OUT ^= BIT0;       //产生捕获信号源
23   }
24 }
25 #pragma vector=TIMERA1_VECTOR
26 __interrupt void Timer_A(void)
27 {
28   switch(TAIV)
29   {
30   case 2:
31     P1OUT ^= BIT3;
32     j=CCR1 = last1;
33     last1  = CCR1;
34     break;
35   case 4:break;
36   case 10:P1OUT ^= BIT0;break; 
37   }
38 }
39 
40 #pragma vector=TIMERA1_VECTOR
41 __interrupt void Timer_cc(void)
42 {
43   if(SCCI0 == 0)
44   {
45     k = CCR0 - last0;
46     last0 = CCR0;
47   }
48 }

 1 /***************************************
 2 功能：ACLK=32768 Hz,MCLK=SMCLK=DCOCLK=80kHz
 3       由捕获/比较模块0产生10Hz的方波，P6.0输出；
 4       由捕获/比较模块1产生20Hz的方波，P6.7输出。
 5 ***************************************/
 6 #include <msp430x14x.h>
 7 void  main(void)
 8 {
 9   WDTCTL = WDTPW + WDTHOLD;
10   TACTL |= TASSEL_2 + ID_3 + MC_2 + TACLR + TAIE;
11   
12   TACCTL0= CCIE;
13   TACCTL1= CCIE;
14   TACCR0 = 5000;
15   TACCR1 = 10000;
16   
17   P6DIR  = 0XFF;
18   P6OUT  = 0Xff;
19   _EINT();
20 }
21 
22 #pragma vector=TIMERA0_VECTOR
23 __interrupt void Timer_A(void)
24 {
25   P6OUT ^= BIT0;
26   TACCR0 = TACCR0 + 5000;
27 }
28 #pragma vector=TIMERA1_VECTOR
29 __interrupt void Timer_A1(void)
30 {
31   switch(TAIV)
32   {
33   case 2:
34     P6OUT ^= BIT7;
35     TACCR1 = TACCR1+10000;
36     break;
37   case 4:break;
38   case 10:P6OUT ^= BIT1;break;
39   }
40 }