main.c

基于msp430的输出乐音系统。开发环境iar3.40。

#include "msp430x13x.h"
int x[35]={1,2,3,1,-1,1,2,3,1,-2,-1,3,4,5,-2,-1,15,16,15,14,3,1,-1,15,16,15,14,3,1,-1,1,5,1,-2,-1};
unsigned int m[7]={0x0778,0x06a7,0x05ed,0x0598,0x04fc,0x0471,0x03f5};
 int q,i=1;
void delay( char v);
void main(){
WDTCTL=WDTPW+WDTHOLD;
TACTL=TASSEL1+TACLR+MC1;
CCTL0|=CCIE;
CCR0=0x0078;
TBCTL=TBSSEL0+TBCLR+MC0+ID0;TBCCR0=0x0300;TBCCTL0|=CCIE;
P2DIR=0X01;
P2OUT=0X01;
_EINT();
while(1){
 

  for (int i=0;i<=34;i++){
  if (x[i]==-1) {TACTL&=~MC1;CCTL0&=~CCIE;delay(1);CCTL0|=CCIE;TACTL|=MC1;}
else if (x[i]==-2) delay(6);
else if(x[i]<=10)
{int y=x[i];
 q=m[y-1];
delay(6);
}
else
{
 int y=x[i];
 q=m[y-11];
delay(4);

}

}


}
}
void delay(char v){
TBCTL|=TBCLR;
TBCCR0=0x0300*v;
_BIS_SR(CPUOFF);
}
#pragma vector=TIMERA0_VECTOR
__interrupt void Timer_A (void){

CCR0+=q;
P2OUT^=0X01;

}
#pragma vector=TIMERB0_VECTOR
__interrupt void Timer_B (void){


_BIC_SR_IRQ(CPUOFF);
  
}