holtek C 程序请教`

只看该作者 · 2011-6-1 21:28

请高手帮忙,小弟第一次用HOLTEK单片机做项目,就遇到问题.
程序如下,不知道怎么回事,没次上电开机后,都会执行下面红色的部分.就算我把该AD0口接地也还会进入,搞不懂,请高手帮忙看看!
#include <HT46R064.h>
#pragma vector isr_4 @ 0x4       //external interrupt
#pragma vector isr_8 @ 0x8 //timer/event 0
#pragma vector isr_c @ 0xc //A/D Conversion Complete
#pragma vector isr_10 @ 0x10  //Time Base Overflow
#define DELAY_MS_PARA 122
//ISR for safequard
void isr_10(){}
//unsigned long ad_current;
unsigned long ad_temperature;
unsigned long ad_voltage;
unsigned long adresult;
unsigned char i,j;
bit adflag,flag;
//initialize registers for safeguard
void safeguard_init()
{
      _intc0 = 0;
      _intc1 = 0;
      _tmr0c = 0;
      _tmr0 = 0;
      _pac = 0xff;
      _pbc = 0xff;
}
void initial();
void aditial();
//void pwmitial();
void timeitial();
void extinitial();
void delay_1ms();
void delay_ms(unsigned int num);
void main()
{
      safeguard_init();
      initial();
      _pb0 = 1;       //电源自锁
      //delay_ms(5);    //10ms
      flag = 0;
      i=0;             //红色LED初始化
      j=0;
      adresult = 0;
      aditial();
      _start=0;
  _start=1;
  _start=0; //ado go
      timeitial();
      _emi = 1;    //开总中断
      extinitial();
      while(1)
      {
      if(flag==1)
      {
      if(ad_voltage < 0x94d)    //小于6V
      {
         _pb0 = 0;    //关闭电源
         delay_ms(50); //delay 100ms
      }


      if((ad_voltage <= 0xa13)&&(ad_voltage>=0x94d)) //>=6V  <=6.5v
      {
//          _pac4 = 0;
         _pa4 = 1;    //打开LED
//    _pb3 = 1;
//    _pb2 = 1; //测试用
         _t0on = 1; //红色LED闪烁
      }

      if(ad_voltage > 0xa13) //>6.5v
      {
//          _pac4 = 0;
         _pa4 = 1;    //打开LED
//    _pb3 = 1;  //测试用
         _t0on = 0;
         _pb5 = 0;
      }



      if(ad_temperature < 0x4b9)
      {
         _pb0 = 0;    //关闭电源
         delay_ms(50); //delay 100ms
//          _t0on = 1;
      }
//       else _t0on = 0;
      /*if(_pac3==1)
      {
         _pb0 = 1;
         pwmitial();
         aditial();
         _pa4 = 1; //pwm  go
         pwmitial();
         _start=0;
   _start=1;
   _start=0; //ado go
         _emi = 1; //开总中断
      }*/

      }
      }
}

void initial()
{
      _pac3 = 1; //set port A to input port
      _pac4 = 0;
   _pa4 = 0;
   _pac0 = 1;
   _pac1 = 1;
      _pbc = 0;    //set port B to output port
      _pb = 0;

}
void aditial()
{
  _acsr=0x01; //system clock/8
//  _adcs2 = 0;
//  _adcs1 = 1;
//  _adcs0 = 0;
  _adcr=0x50; //an0~an1 , an0:外部电压检测
//  _pcr2 = 0;
//  _pcr1 = 1;
//  _pcr0 = 0;
//  _adonb = 0;
//  _acs2 = 0;
//  _acs1 = 0;
//  _acs0 = 0;
//  _adcr = 0x19; //准备删
  adflag = 0;
  _ade = 1;    //AD中断允许
}
/*void pwmitial()
{
  _pwm0 = 256; //duty:50/128 31k
  _pwmsel = 0; //6+2
  _pwmc0 = 1; //select pin PA4 to have a PWM function

}*/
void timeitial()
{
_tmr0c = 0x87;
_tmr0 = 0;
_t0e = 1;
}
void extinitial()
{
_integ1 = 0;
_integ0 = 1;  //上升沿
_inte = 1;
}
void isr_c()  //ad int
{
  unsigned long ad_temp;
      *((unsigned char *)&ad_temp+1)=_adrh;
  *((unsigned char *)&ad_temp+0)=_adrl;
ad_temp = (ad_temp>>4);
_adf = 0;
if(adflag==0)
{
adresult = adresult + ad_temp;
   j++;
if(j==16)
{
   //j=0;
   ad_voltage = (adresult>>4);
   _acs2 = 0;
   _acs1 = 0;
   _acs0 = 1;
//    _acs2 = 0;
//    _acs1 = 1;
//    _acs0 = 0;
   adflag = 1; //切换通道AN1
   adresult = 0;
}
}
else
{
adresult = adresult + ad_temp;
   j++;
if(j==32)
{
   flag=1;
   j=0;
   ad_temperature = (adresult>>4);
   _acs2 = 0;
   _acs1 = 0;
   _acs0 = 0;
//    _acs2 = 0;
//    _acs1 = 0;
//    _acs0 = 1;
   adflag = 0;  //切换AN0
   adresult = 0;
}
}
  _start=0;
  _start=1;
      _start=0; //ado go
}
void isr_8() //time 0
{
_t0f = 0;
i++;
if(i == 50)
{
  i=0;
  _pb5 = ~_pb5;
}
}
void isr_4() //external interrupt
{
_intf = 0;
_pb0 = 0;       //关闭总电源
// delay_ms(50);
}
void delay_1ms(void)
{
unsigned int i;
for(i=0;i<(DELAY_MS_PARA);i++);
}
void delay_ms(unsigned int num)
{
unsigned int i;
for(i=0;i<num;i++) delay_1ms();
}