求救，求大神帮忙看看为什么采不了值

只看该作者 · 2017-7-27 22:53

void ADC()
{
         P6SEL |= (BIT1+BIT2+BIT3);             // 将 P6.5 选择为ADC 输入端  上电后IO口默认为输入
         ADC12CTL0 = ADC12SHT02 + ADC12ON +ADC12MSC;
         ADC12CTL1 = ADC12SHP+ADC12CONSEQ_3; // ADC12SHT02——设置采样保持时间，ADC12ON——打开采样时钟
                                             // 使用采样定时器；选择4种模式，0、2为单路，1、3为多路
//    ADC12IE  |= BIT0;                // 允许中断  //中断使能寄存器
         ADC12MCTL0 = ADC12INCH_0;          // 使能转换
                     ADC12MCTL1 = ADC12INCH_1;
                     ADC12MCTL2 = ADC12INCH_2;
                     ADC12MCTL3 = ADC12INCH_3;
                     ADC12MCTL4 = ADC12INCH_4;
                     ADC12MCTL5 = ADC12INCH_5;
                     ADC12MCTL6 = ADC12INCH_6;
                     ADC12MCTL12 = ADC12INCH_12;
         ADC12CTL1|= ADC12ENC;       // 启动转换
}

void xianshi()
{
ii++;
      if(ii>50)
      {

         LCD_CLS();
         ii=0;
      }

         LCD_P6x8Str(6,1,"JY");
         LCD_P6x8Str(24,1,"CQ");
         LCD_P6x8Str(42,1,"MY");
         LCD_P6x8Str(66,1,"X");
         LCD_P6x8Str(90,1,"Y");
         LCD_P6x8Str(0,3,"<1>");
         LCD_P6x8Str(0,4,"<2>");
         LCD_P6x8Str(0,5,"<3>");
         LCD_P6x8Str(0,6,"<4>");
         LCD_P6x8Str(60,3,"<5>");
         LCD_P6x8Str(60,4,"<6>");
         LCD_P6x8Str(60,5,"<7>");
         LCD_P6x8Str(60,6,"<8>");

         LCD_Write_6x8Int(30,3,ADC12MCTL0);
         LCD_Write_6x8Int(30,4,ADC12MCTL1);
         LCD_Write_6x8Int(30,5,ADC12MCTL2);
         LCD_Write_6x8Int(30,6,ADC12MCTL3);
         LCD_Write_6x8Int(90,3,ADC12MCTL4);
         LCD_Write_6x8Int(90,4,ADC12MCTL5);
         LCD_Write_6x8Int(90,5,ADC12MCTL6);
         LCD_Write_6x8Int(90,6,ADC12MCTL12);
         LCD_Write_6x8Int(66,2,x);
         LCD_Write_6x8Int(90,2,y);
}

int  main(void)
{
   WDTCTL = WDTPW + WDTHOLD; //关闭看门狗
   _EINT(); //开总中断
port_init();
LCD_Init();
LCD_CLS();
IO_init();
   ADC();

while(1)
{

//          caizhi();
         xianshi();
//          sudu();

   }
}

#pragma vector=TIMER0_A0_VECTOR
__interrupt void TIMER0_A0_ISR(void)
{
                     ADC();
                     ADC12CTL1 |= ADC12SC;
                     Timer_A2_1_init();
                     Timer_A2_2_init();

shu++;
if(shu==1000)
{
      nn++;
      shu=0;
      if(nn==60)
      {
            nn=0;
            bb++;
      }
         }
}