完美运行

P0 = 0x00;
P2 = P2&0x1f;
P0 = 0xff;
}
if(dspbuf[1]==2)high++; else high=0;
if(high == 50)
{
model_high=1;
if(key_temp != 0xf0) //有按键按下
key_press++;
else
key_press = 0; //抖动
if(key_press == 3)
{
key_press = 0;
key_re = 1;
switch(key_temp)
dspbuf[1]=1;else dspbuf[1]=0;}
else dspbuf[1]=2;
}
led();
if(shezhi)
{ dspbuf1[1]=wendusheding[0];
key_value = (col-1); //第一行按键按下
if(modelflag==25)
{
P0 = 0xfe;
P2 = ((P2&0x1f)|0x80);
P2 &= 0x1f;
P0 = 0xff;
modelflag=0;
}
}
if(model_low)
displayer();
else
display();
if(++intr == 15) //2ms执行一次
{
intr = 0;
key_flag = 1; //20ms按键扫描标志位置1
temper_flag=1;
modelflag++; if(modelflag==100)modelflag=0;
#include "reg52.h" //定义51单片机特殊功能寄存器
#include "onewire.h" //单总线函数库
#include "absacc.h"
unsigned char dspbuf[8] = {11,1,11,10,10,10,0,0};
unsigned char dspbuf1[8] = {11,10,10,10,10,11,10,10};//显示缓冲区
{ model_low = 0;
if(modelflag==11)
{ P0 = 0xfe;
P2 = ((P2&0x1f)|0x80);
P2 &= 0x1f;
modelflag=0;
P0 = 0xff;
}
P0 = 0x00;
P2 = P2&0x1f;
P0 = 0xff;
}
if(dspbuf[1]==1)mid++;else mid=0;
if(mid == 25)
{
model_mid=1;
mid=0;
P0 = 0x00;
P2 = ((P2&0x1f)|0xa0);
}
//显示数据更新
if(key_flag)
{
key_flag = 0;
key_temp = read_keyboard();
}
break;
}
P3 = 0x0f;
key_temp = (P3&0x0f);
switch(key_temp)
{
case 0x0e:
unsigned int high;
unsigned int modelflag;
bit shezhi;
bit model_low;
bit model_mid;
bit model_high;
unsigned int model=0;
bit flag;
bit key_flag;
high =0;
P0 = 0x10;
P2 = ((P2&0x1f)|0xa0);
P0 = 0x10;
P2 = P2&0x1f;
P0 = 0xff;
}
if(model_mid)
{ model_mid = 0;
}
if(model_high)
{ model_high = 0;
if(modelflag==5)
{
P0 = 0xfe;
P2 = ((P2&0x1f)|0x80);
P2 &= 0x1f;
P0 = 0xff;
unsigned char intr;
void led();
unsigned char read_keyboard(void);
void key_proc(unsigned char key);
//主函数
void main(void)
{
unsigned char key_temp = 0xff;
}
}
//读取矩阵键盘键值
unsigned char read_keyboard(void)
{
unsigned char key_temp;
static unsigned char col;
P3 = 0xf0;
key_temp = (P3&0xf0);
dspbuf1[2]=wendusheding[1];
dspbuf1[6]=wendusheding[2];
dspbuf1[7]=wendusheding[3];
tmax= dspbuf1[1]*10+dspbuf1[2];
tmin=dspbuf1[6]*10+dspbuf1[7] ;
TH0 = (65536-2000)/256;
TL0 = (65536-2000)%256; //定时器重载
P2 &= 0x1f;
P0 = 0xff;
P2 = ((P2&0x1f)|0x80);
P2 &= 0x1f;
if(shezhi)
shezhi=0;
TMOD |= 0x01; //配置定时器工作模式
TH0 = (65536-2000)/256;
TL0 = (65536-2000)%256;
EA = 1;
ET0 = 1; //打开定时器中断
TR0 = 1; //启动定时器
modelflag=0in)flag=0;
else flag=1;
if(flag)
{
P0 = 0xfd;
P2 = ((P2&0x1f)|0x80);
P2 &= 0x1f;
while(1)
{ key_temp = 0xff; //清除旧键值
P0=0xff;
if(temper_flag)
{
temper_flag = 0;
if(rd_temperature()<50)
temperature = rd_temperature(); //读温度
break;
case 0xd0:
col = 3; //第三列按键按下
break;
case 0xe0:
col = 4; //第四列按键按下
}
}
void led()
{
if(dspbuf[1]==0)low++; else low=0;
if(low == 25)
{
model_low=1;
low =0;
P0 = 0x00;
P2 = ((P2&0x1f)|0xa0);
}
key_proc(key_temp);
key_temp = 0xff;
}
}
//定时器中断服务函数
void isr_timer_0(void) interrupt 1 //默认中断优先级 1
{
* 程序说明：1.使用程序前，将跳线J2调整为KBD模式
* 2.按键功能可参考按键处理函数:void key_proc(unsigned char key);
* 日期版本：2012-9-4/V1.0a
*******************************************************************************/
/*******************************************************************************
* 文件名称：矩阵键盘实验
* 实验目的：1.掌握矩阵键盘扫描的基本原理
* 2.掌握按键扫描及消除抖动的基本原理
unsigned char dspcom = 0;
unsigned char intr,intr1;
unsigned char temper_flag = 0;//温度读取标志
code unsigned char tab[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,
if(temperature<50)
{ dspbuf[6] = temperature/10;
dspbuf[7] = temperature%10;
if(temperature<tmax){if(temperature>tmin)