各位大侠版主：

    我用得是s12dg128b得片子，通过AD采集传感器得信号，程序如下：

#include <hidef.h>      /* common defines and macros */
#include <mc9s12dg128.h>     /* derivative information */

#pragma LINK_INFO DERIVATIVE "mc9s12dg128b"
int i;
unsigned char * ADPointer[8];
unsigned int Sen_Read_Result[8];
#pragma CODE_SEG DEFAULT

void AD_Init(void){

  ATD0CTL2 = 0xc0;   //寄存器自动清零
  ATD0CTL3 = 0x00;   //转换序列长度为8
  ATD0CTL4 = 0x88;   // 8bit  AD时钟8/9
  ATD0CTL5 = 0x30;   //连续多通道转换，左对齐
  ATD0DIEN = 0x00;  //禁止数字输入

  ADPointer[0] = &ATD0DR0H;
  ADPointer[1] = &ATD0DR1H;
  ADPointer[2] = &ATD0DR2H;
  ADPointer[3] = &ATD0DR3H;
  ADPointer[4] = &ATD0DR4H;
  ADPointer[5] = &ATD0DR5H;
  ADPointer[6] = &ATD0DR6H;
  ADPointer[7] = &ATD0DR7H;
}

void main(void) {
  AD_Init();
  EnableInterrupts;
  for(i=0; i<8 ; i++) {
    Sen_Read_Result = *ADPointer;
  }
}