我现在有原理图，实物已经按照原理图接线，程序现在有问题，望各位大神指教
#include "reg52.H"
#include <STC89c52.h>
#include <L1602.h>
#include <2402.h>
#define uchar unsigned char
#define uint unsigned int
//声明常量
#define ALCH 80 //醉驾标准80mg/L
//K_MG_MV和K_ZERO为传感器校准系数，要根据每个MQ-3模块校准
#define K_MG_MV 160/66 //传感器灵敏度系数，每毫克/L对应的10毫伏数
#define K_ZERO 15 //传感器零点漂移，约130mV
//定义按键
sbit Key_Up = P3^6;
sbit Key_Down = P3^7;
//定义LED报警灯
sbit Led_Warn1 = P2^0;
sbit Led_Warn2 = P2^1;
sbit Led_Warn3 = P2^2;
//定义乙醇传感器TTL电平输出引脚
sbit DOUT = P1^4;
//定义标识
volatile bit FlagStartAL = 0; //开始转换标志
volatile bit FlagKeyPress = 0; //有键弹起标志
//全局变量定义
uchar Threshold; //酒精浓度上限报警值
uint ALCounter; //酒精转换计时器
long ALValue; //酒精测量值
float ALtemp; //计算临时变量
uint keyvalue, keyUp, keyDown; //键值
char * pSave; //EEPROM存盘用指针
//函数声明
void Data_Init();
void Timer0_Init();
void Port_Init();
void ADC_Init();
uchar GetADVal();
void KeyProcess(uint );
//数据初始化
void Data_Init()
{
ALCounter = 0;
ALValue = 0;
Led_Warn1 = 1;
Led_Warn2 = 2;
Led_Warn3 = 3;
keyvalue = 0;
keyUp = 1;
keyDown = 1;
}
//定时器0初始化，中断时间约2毫秒
//计算：晶振11.0592MHz，定时器时钟11059200/12=921600，每毫秒922个脉冲
// 16位定时器初值65536-1844=63692=0xf8cc
void Timer0_Init()
{
ET0 = 1; //允许定时器0中断
TMOD = 1; //定时器工作方式选择
TL0 = 0xcc; //
TH0 = 0xf8; //定时器赋予初值，大约为2毫秒中断1次
TR0 = 1; //启动定时器
}
//定时器0中断
void Timer0_ISR (void) interrupt 1 using 0
{
TL0 = 0xcc;
TH0 = 0xf8; //定时器赋予初值
//每1秒钟启动一次AD转换
ALCounter ++;
if (ALCounter >= 500)
{
FlagStartAL = 1;
ALCounter = 0;
}
}
//存入设定值
void Save_Setting()
{
pSave = (char *)&Threshold; //地址低位对应低8位，高位对应高8位
wrteeprom(0, *pSave); //存醉酒阈值低8位
DELAY(300);
pSave ++;
wrteeprom(1, *pSave); //存醉酒阈值高8位
DELAY(300);
}
//载入设定值
void Load_Setting()
{
pSave = (char *)&Threshold;
*pSave++ = rdeeprom(0);
*pSave = rdeeprom(1);
if ((Threshold>=255)||(Threshold<0)) Threshold = 80;
}
//按键处理程序，参数为键值，1为Up键，2为Down键
void KeyProcess(uint num)
{
switch (num)
{
case 1:
if (Threshold<255) Threshold++;
break;
case 2:
if (Threshold>1) Threshold--;
break;
default:
break;
}
L1602_int(2,9,Threshold);
Save_Setting();
}
void main()
{
uint i,j;
EA = 0;
Data_Init(); //数据初始化
Timer0_Init(); //定时器0初始化
Port_Init(); //端口初始化
ADC_Init(); //ADC初始化
EA = 1;
L1602_init();
L1602_string(1,1,"Welcome to ALCT! ");
L1602_string(2,1,"Designed by AAA ");
//延时
for (i=0;i<1000;i++)
for (j=0;j<1000;j++)
{;}
//清屏
L1602_string(1,1," ");
L1602_string(2,1," ");
L1602_string(1,1,"Alcohol: mg/L");
L1602_string(2,1,"Thresho: mg/L");
//载入设定值
Load_Setting();
L1602_int(2,9,Threshold);
while(1)
{
//如果FlagStartAL标志置位，则进行AD转换
if (FlagStartAL == 1)
{
//酒精浓度换算，50mg/L=62.5ppm，传感器灵敏度应事先校准
ALValue = 500 * GetADVal() / 256; //8位ADC，首先得到电压值，单位10毫伏
ALValue = ALValue - K_ZERO; //首先减去零点漂移，一般是130mV
if (ALValue < 0) ALValue = 0;
ALValue = ALValue * K_MG_MV; //将mV转变成mg/L，K_MG_MV系数需要校准
L1602_int(1,9,ALValue);
if (ALValue > Threshold) Led_Warn1 = 0; //超过阈值，则 Led_Warn1灯报警，否则报警灯灭。
else Led_Warn1 = 1;
FlagStartAL = 0;
}
//查询乙醇传感器TTL电平，该指示灯为传感器模块报警
if (DOUT == 0) Led_Warn2 = 0;
//键盘查询，在弹起时响应
if ((Key_Up)&&(keyUp==0)) {FlagKeyPress = 1; keyvalue = 1;}
else if ((Key_Down)&&(keyDown==0)) {FlagKeyPress = 1; keyvalue = 2;}
if (FlagKeyPress == 1)
{
KeyProcess(keyvalue);
FlagKeyPress = 0;
}
if (!Key_Up) keyUp = 0;
else keyUp = 1;
if (!Key_Down) keyDown = 0;
else keyDown = 1;
DELAY(100);
}
}
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