g2553 AD多通道单次转换程序

只看该作者 · 2014-5-30 19:32

unsigned int result[4];
void init_ADC10()
{
  P1SEL|=BIT0+BIT3+BIT4+BIT5;
  ADC10AE0|=BIT0+BIT3+BIT4+BIT5; // 使P1.0允许AD模拟输入信号
  ADC10CTL0=ADC10ON+MSC+SREF_0;//+REFON  开AD内核，选择电源为参考电压
  ADC10CTL1=ADC10SSEL_0+CONSEQ_0; //+INCH_1+INCH_2 选择ADC12SC为触发源,选择系统时钟为AD内核时钟，采用单通道多次采用

}
void start_ADC10()
{
  ADC10CTL1|=INCH_0;
  ADC10CTL0|=ADC10SC+ENC;    // 开始转换  开转换允许
  while(ADC10CTL1&ADC10BUSY!=0);//判断是否转换完毕
  result[0]= ADC10MEM;
  //printf("%d\n",result[0]);
  ADC10CTL0&=~(ADC10SC+ENC);  //关转换允许才能选择通道
  ADC10CTL1&=~INCH_0;       //通道清0
  ADC10CTL1|=INCH_3;
  ADC10CTL0|=ADC10SC+ENC;
  while(ADC10CTL1&ADC10BUSY!=0);
  result[1]= ADC10MEM;
  //printf("%d\n",result[1]);
  ADC10CTL0&=~(ADC10SC+ENC);
  ADC10CTL1&=~INCH_3;
  ADC10CTL1|=INCH_4;
  ADC10CTL0|=ADC10SC+ENC;
  while(ADC10CTL1&ADC10BUSY!=0);
  result[2]= ADC10MEM;
  ADC10CTL0&=~(ADC10SC+ENC);
  ADC10CTL1&=~INCH_4;
  ADC10CTL1|=INCH_5;
  ADC10CTL0|=ADC10SC+ENC;
  while(ADC10CTL1&ADC10BUSY!=0);
  result[3]= ADC10MEM;
  ADC10CTL0&=~(ADC10SC+ENC);
  ADC10CTL1&=~INCH_5;
  //printf("%d\n",result[2]);
}