MSP430F149学习之路—

MSP430F149学习之路——时钟2

代码一：

/**************************
功能：LED每隔1秒闪烁一次
****************************/
#include <msp430x14x.h>
void main()
{
  P6DIR = 0XFF;
  P6OUT = 0X00;
  TACCR0 = 4095;
  TACCTL0 = CCIE;
  TACTL = TASSEL_1 + ID_3 + MC_1;
  
  _EINT();
  LPM3;
}
#pragma vector=TIMERA0_VECTOR
__interrupt void Timer_A(void)
{
  P6OUT ^= 0XFF;
}

代码二：

 1 #include <msp430x14x.h>
 2 
 3 int flag=0,time=0;
 4 void int_clk();    //初始化时钟
 5 void int_timer();  //设置定时器A
 6 void main()
 7 {
 8   WDTCTL = WDTPW +WDTHOLD;
 9   P6DIR  = 0XFF;
10   P6OUT  = 0XFF;
11   int_clk();
12   int_timer();
13   _EINT();
14   
15   for(;;)
16   {
17     while(flag)
18     {
19       flag=0;
20       time++;
21       if(time==100)
22       {
23         P6OUT ^= 0XFF;
24         time = 0;
25       }
26     }
27   }
28 }
29 
30 void int_clk()
31 {
32   BCSCTL1 &= ~XT2OFF;
33   BCSCTL2 |= SELM_1 + SELS;
34   do
35   {
36     IFG1 &= ~OFIFG;
37     for(int i=100;i>0;i--)
38       _NOP();
39   }while((IFG1 & OFIFG)!=0);
40   IFG1 &= ~OFIFG;
41 }
42 
43 void int_timer()
44 {
45   TACTL |= TASSEL_2 + ID_3 + MC_1;
46   TACCTL0 = CCIE;
47   TACCR0 = 9999;      //10ms
48 }
49 #pragma vector = TIMERA0_VECTOR
50 __interrupt void Timer_A(void)
51 {
52   flag = 1;
53 }