来个大神给个输出正弦波的SPWM程序借鉴一下！

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16条回答

jishuaihu

1楼-- · 2019-03-24 04:04

精彩回答 2 元偷偷看……

bodao123456

2楼-- · 2019-03-24 05:15

< ：TI_MSP430_内容页_SA7 -->

#include<msp430g2553.h>
#define delay_us(x) __delay_cycles((long)(CPU_F*(double)x/1000000.0))
char sintable[10]={100,78,70,78,100,
126,148,156,148,126};
char y=0;
unsigned int i;
char flag=0;
void main()
{
WDTCTL=WDTPW+WDTHOLD;
BCSCTL1=CALBC1_16MHZ;
DCOCTL=CALDCO_16MHZ;
P1IE|=BIT4;        //P1.4触发
P1IES&=~0x10;     //上升沿触发
P1IFG&=~0x10;
P1DIR=0x04;   // P1.2输出
P1SEL=0x04;
P1OUT=0;     //先输出低
//ta1 congigure
//ta0configure
TACTL=TASSEL1+TACLR;
CCR0=157;
CCR1=sintable[y];
CCTL1=OUTMOD_3;      //CCTL1|=CCIE;
CCTL0=CCIE;
TACTL|=MC_1;
_EINT();
while(1)
{
    if(flag==1)
    {
      flag=0;
      TACTL|=MC_1;
    }
}
}
#pragma vector=TIMER0_A0_VECTOR
__interrupt void Timer_A1(void)
{
   y=y+1;
   if(y<10)
   {
    CCR1=sintable[y];
   }
   else
   {
     y=0;
     CCR1=sintable[y];
   }
}
#pragma vector=PORT1_VECTOR
__interrupt void PORT1(void)
{
y=3;
//for(i=100;i>0;i--);
CCR1=sintable[y];
P1IFG&=~0x10;
}