MSP430调PMW程序例程（C语言）

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MSP430调PMW程序例程（C语言） [复制链接]

MSP430单片机调PMW程序：

#include"msp430G2553.h"

#define uint unsigned int
uint Fre,temp1=50;
void delay( int ms)
{
  int i;
  while(ms--)
  for(i=0;i<120;i++);
}
int main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  DCOCTL=CALDCO_16MHZ;BCSCTL1 = CALBC1_16MHZ;
  BCSCTL2 |=SELM_1+DIVM_2;
  P1DIR &=~BIT3;
  P1REN |=BIT3;
  P1OUT |=BIT3;
  P1IE  |=BIT3;
  P1IES |=BIT3;
  P1DIR |=BIT0+BIT6;
  P1OUT &=~BIT6;
  P1OUT |=BIT0;
  _EINT();
  while(1)
  {
    P1OUT ^=(BIT0);
    delay(temp1);
  }
}
#pragma vector=PORT1_VECTOR
__interrupt void PORTP13(void)
{
  uint temp,pushkey=0;
  pushkey=BIT3 & (~P1DIR);
  __delay_cycles(10000);
  temp=P1IN;
  if((~temp) & BIT3==pushkey)
  {
     Fre++;
     temp1 =temp1+100;   
  }
     P1IFG &=~BIT3;
}