[求助] PWM波怎么输出不了 xianshi函数跟pwm函数冲突

阿木伊凡 2015-6-15 18:49 楼主

#include  "msp430g2553.h"
  unsigned int admem[4];
  unsigned long n;
  unsigned int invot=0;
  unsigned int inan=0;
  unsigned int otan=0;
  unsigned int outvot=0;
void sys_Clock_Init() //时钟初始化为 1MHz；
{
BCSCTL1 = CALBC1_1MHZ; // Set range
DCOCTL = CALDCO_1MHZ; // Set DCO step + modulation */
}
void cai()//ad采样

{
  int*p=(int*)0x200;
  int i;
  P1DIR&=~BIT0+~BIT1+~BIT2+~BIT3;
  P1SEL|=BIT0+BIT1+BIT2+BIT3;
  WDTCTL = WDTPW + WDTHOLD;// Stop WDT
  ADC10CTL0 &= ~ENC;
  ADC10CTL1 = INCH_3 + CONSEQ_1+ADC10SSEL_2+SHS_0;          // A3/A2/A1/A0, single sequence序列单次
  ADC10CTL0 = ADC10SHT_3 +MSC+ ADC10ON+SREF_0;
  ADC10DTC1 = 0x04;                      // 4 conversions
  ADC10AE0 |= BIT0+BIT1+BIT2+BIT3;                      // P1.3,2,1,0 ADC10 option select

while (ADC10CTL1 & BUSY);             // Wait if ADC10 core is active
ADC10SA = 0x200;  // Data buffer start
ADC10CTL0 |= ENC+ADC10SC;  // Sampling and conversion start
_delay_cycles(3000);

for(i=0x00;i<4;i++)
{
admem[i]=*p;
p++;
}
p=(int*)0x200;

n=admem[0]*66;
   outvot=n/100;
n=admem[1]*66;
   invot=n/102;
n=admem[2]*30;
   inan=n/40;
n=admem[3]*30;
   otan=n/40;

return;
}

void xianshi ()//数码管按段显示  显示函数
{
P2SEL=0X00;
P2DIR=0XFF;
unsigned int i;
unsigned int j;
unsigned int num;
unsigned int x[3]={0x10,0x20,0x40};
unsigned int wei;
unsigned int seg[3];
int yu=1;
// int c;
seg[0]=outvot/100;
yu=outvot%100;
seg[1]=yu/10;
seg[2]=yu%10;
//for( c=0;c<100;c++)
//{
for(j=0x00;j<3;j++)
{
num=seg[j];
wei=x[j];
switch(num)
{case 0 :
for(i=0x0;i<0x6;i++)
   {P2OUT=wei+i;
_delay_cycles(1000); }  break;
case 1:
for(i=0x1;i<3;i++)
      {
        P2OUT=wei+i;
        _delay_cycles(1000);} break;
case 2:
for(i=0x0;i<0x2;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }
for(i=0x3;i<5;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }
for(i=0x6;i<0x7;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); } break;
case 3:
for(i=0x0;i<0x4;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }
         i=6; P2OUT=wei+i;_delay_cycles(1000);
         break;
case 4:
for(i=0x1;i<0x3;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }
for(i=0x5;i<0x7;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); } break;
case 5:
i=0;P2OUT=wei+i;_delay_cycles(1000);
for(i=0x2;i<0x4;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }
for(i=0x5;i<0x7;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }  break;
case 6:
i=0; P2OUT=wei+i;_delay_cycles(1000);
for(i=0x2;i<0x7;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }  break;
case 7:
for(i=0x0;i<0x3;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }  break;

case 8:
for(i=0x0;i<0x7;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }  break;
case 9:
for(i=0x0;i<0x4;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }

for(i=0x5;i<0x7;i++)
         {P2OUT=wei+i;
        _delay_cycles(1000); }  break;}
}

   for(i=0x1;i<0x6;i++)
{P2OUT=0x80+i;
      _delay_cycles(1000); }

      P2OUT=0X17;
      _delay_cycles(1000);
}

void main()
{
sys_Clock_Init();
WDTCTL = WDTPW + WDTHOLD;
//BCSCTL1 = CALBC1_1MHZ; // Set range
//DCOCTL = CALDCO_1MHZ; // Set DCO step + modulation */
P1DIR |= BIT6;          //  p1.6 口
P1SEL |= BIT6;
TA0CTL |= TASSEL_1+MC_3;
TA0CCTL1 |= OUTMOD_7; //选择高电平模式的 PWM 输出
TA0CCR0=60;//TA1CCR0 写入 2000（ 1MHZ/2000）输出达到了 500HZ
TA0CCR1=50;

for(;;)
   {
   WDTCTL = WDTPW + WDTHOLD;
   cai();
   xianshi (); //如果注释掉显示函数pwm口会正常工作
   if(outvot>310)//outvot 采样电压电压为3.1
   {
   TA0CCR1++;
   }
   if(outvot<310)
   {
   TA0CCR1--;
   }

   }
}