[LaunchPad] 高手来帮我看下这AD程序

#include "msp430g2553.h"
#include "1602.h"

#define uchar unsigned char
#define uint unsigned int
#define   Num_of_Results   1
//unsigned long sum=0;
static uint results[Num_of_Results];    //保存ADC转换结果的数组                                                     // is not used for anything.
void Trans_val(uint Hex_Val);
/***************************************
    1602显示字符 和算法滤波的定义
*************************************/
uchar shuzi[] = {"0123456789."};
uchar tishi[] = {"The volt is:"};
 
void ClkInit()
{
  WDTCTL = WDTPW + WDTHOLD; //关闭看门狗定时器
  if(CALBC1_1MHZ ==0xFF || CALDCO_1MHZ == 0xFF)
  {
    while(1); //挂起
  }
  BCSCTL1 = CALBC1_1MHZ;
  DCOCTL = CALDCO_1MHZ; //设置DCO模式,MCLK默认时钟源为DCOCLK，即为1MHz
}//BCSCTL1 执行完后等于0x86,DCOCTL  执行完后等于0X60

/**************************************
              主函数
***************************************/
int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;  // Stop WDT
  //ClkInit();
  LCD_init();                              //复位1602液晶
  LCD_write_string(2,0,tishi);                  //显示提示信息
  LCD_write_char(11,1,'V');

  //P1DIR&=~BIT1;
  P1SEL|=BIT1;
  ADC10DTC1=0;
  ADC10CTL0 = ADC10SHT_0 + ADC10ON + ADC10IE + MSC; // ADC10ON, interrupt enabled
  ADC10CTL1 = INCH_1;                       // input A1
  ADC10AE0 |= 0x02;                     // PA.1 ADC option select
  ADC10CTL0 |= ENC + ADC10SC;             // Sampling and conversion start
 
  _EINT();
  __bis_SR_register( GIE);      // Clear CPUOFF bit from 0(SR)
 // while(1)
 // {
  //  Trans_val(sum);
  ///}
}   

/*******************************************
函数名称：ADC12ISR
功    能：ADC中断服务函数，在这里用多次平均的
          计算P6.0口的模拟电压数值
参    数：无      
返回值  ：无
********************************************/
#pragma vector=ADC10_VECTOR
__interrupt void ADC10ISR (void)
{    
  static uint index = 1;
  results[index++] = ADC10MEM; // Move results
 
  if(index == Num_of_Results)
  {
        uchar i;
     
      unsigned long sum=0;
        index = 0;
        for(i = 0; i < Num_of_Results; i++)
        {
            sum += results;
        }
        sum >>= 0;                            //除以32   2的5次方=32
       
       Trans_val(sum);
  }
 
  // __bic_SR_register_on_exit(CPUOFF);
}