MSP430 F249 单通道ADC P6.1转化仿真无果

只看该作者 · 2018-4-24 17:00

程序如下：

#include  <msp430x24x.h>
#define uchar unsigned char
#define uint unsigned int
uchar const table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,  //共阴数码管段选码表，无小数点
                           0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

uchar Index,flag,Disbuf[8];
void delayms(uint t)
{
uint i;
while(t--)
   for(i=1000;i>0;i--);//进过参数的调整1330
}
void VoltDataProcess(uint Volt)
{
float temp;
   uchar i;
   unsigned long t;
temp=((float)(Volt))*5/4096;
t=(unsigned long)(temp*1000);
while(t)
{
   Disbuf[7-i++]=table[t%10];
   t=t/10;

}


for(;i<8;i++)
{
   if(i<=3)
   {
      if(i==3)
      {
      Disbuf[7-i]=table[0];
      continue;
      }
      Disbuf[7-i]=table[0];
      continue;
   }
   Disbuf[7-i]=0x00;
}
Disbuf[4]|=0x80;



}
void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                // 关闭看门狗
  ADC12CTL0 &= ~(ENC);
  ADC12CTL0 = SHT0_2 + ADC12ON;          // 打开ADC12模块、设置采样时间
  ADC12CTL1 = CSTARTADD_1+SHP;                         // 选择信号源自采样定时器，设置为单通道转换
  ADC12MCTL1 |= INCH_1;
  ADC12IE = 0x02;                         // 使能中断
  ADC12CTL0 |= ENC;                      // 使能转化
  P6DIR = 0xFD;                         // P6.1, i/p
  P6SEL|= 0x02;                         // 使能ADC12模块的A1

  P1DIR=0xFF;          // 设置方向
  P1SEL=0;          // 设置为普通I/O 口
  P2DIR=0xFF;
  P2SEL=0;
  P2OUT=0x00;
  P3DIR=0xFF;          // 设置方向
  P3SEL=0;          // 设置为普通I/O 口

  P1OUT=0x00;
  P3OUT=0xFF;
  ADC12CTL0 |= ADC12SC;                // 开始转换
  //_BIS_SR(CPUOFF + GIE);                // LPM0, ADC12_ISR will force exit
  _BIS_SR(LPM0_bits+ GIE);//进入低功耗睡眠模式
while(1)
{

      ADC12IE=0x00;
      P3OUT=0xFF;
      P1OUT=Disbuf[Index];
      P3OUT=~(1<<Index);
      ADC12IE=0x02;
      if(++Index==8)
      {
         Index=0;
         ADC12CTL0 |= ADC12SC;
      }
      delayms(1);

}
}

// ADC12 interrupt service routine
#pragma vector=ADC12_VECTOR
__interrupt void ADC12_ISR (void)
{
VoltDataProcess(ADC12MEM0);
   LPM0_EXIT;
}