基于MSP430f5529的电动机调速程序

代码如下：

#include "MSP430F5529.h"
void Sys_Init(){
  P1DIR |=BIT2;
  P1SEL |=BIT2;
  P1DIR |=BIT3;
  P1SEL |=BIT3;

  P7DIR |=BIT4+BIT0;
  P7OUT |=BIT4;    //AN1=1   反转
  P7OUT &=~BIT0;   //AN2=0

  TA0CCR0=800;
  TA0CCTL1=OUTMOD_7;
  TA0CCR1=500;
  TA0CCTL2=OUTMOD_7;
  TA0CCR2=500;
  TA0CTL =TASSEL_1+MC_1+TACLR;
}

int main( void )
{
  // Stop watchdog timer to prevent time out reset
   WDTCTL = WDTPW + WDTHOLD;
   int i;
   char SpeedMode=0;
   Sys_Init();
   while(1)
   {
     for(i=0;i<4000;i++);  //延迟

     if(SpeedMode==0)      //加速模式下
      {
       TA0CCR1++; //占空比不断提高
       P1DIR |=BIT0;
       P1OUT |=BIT0;            
       if(TA0CCR1>=500) SpeedMode=1; //到达100%后转为减速模式
      } 
     if(SpeedMode==1)      //减速模式下
      {
       TA0CCR1--;             //占空比不断降低
       if(TA0CCR1<=200) SpeedMode=0; //到达40%后转为加速模式
     }     
   }
}