#include
#include //含_nop_()延时函数
//定义数据类型
#define uchar unsigned char
#define uint unsigned int
//定义端口
#define LED P0 //段码输出口
sbit DQ = P3^2; //传感器数据口
sbit SMG_q = P1^0;//定义数码管阳级控制脚(千位)
sbit SMG_b = P1^1;//定义数码管阳级控制脚(百位)
sbit SMG_s = P1^2;//定义数码管阳级控制脚(十位)
sbit SMG_g = P1^3;//定义数码管阳级控制脚(个位)
sbit buzzer = P1^5; //蜂鸣器
sbit led_low = P2^6; //低温指示灯
sbit led_high = P2^7; //高温指示灯
sbit led_ok = P2^5; //温度正常指示灯
sbit led_work = P2^4; //工作指示灯
sbit set = P3^7; //设置按键
sbit add = P3^4; //加一按键
sbit dec = P3^5; //减一按键
//定义变量和常量
int count = 0; //按键次数寄存器
int h; //主函数用循环计数器
uint temp; //温度值
uchar r; //温度值整数形式
uchar high = 35,low = 20; //上下限初值
//共阳LED段码表 "0" "1" "2" "3" "4" "5" "6" "7" "8" "9" "不亮" "-"
uchar code LED_code[12] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
uchar code LED_code1[] = {0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10};
uchar code ditab[16] =
{0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x04,0x05,0x06,0x06,0x07,0x08,0x08,0x09,0x09};//小数部分转换码表
uchar data temp_data[2] = {0x00,0x00};//存储从传感器读出的温度值
uchar data dp[5] = {0x00,0x00,0x00,0x00,0x00};//显示单元数据，共4个数据和一个运算
//子函数声明
void ds_reset(); //DS18B20初始化函数
void ds_write(uchar ds_wrdata); //DS18B20写数据函数
uchar ds_read(); //DS18B20读数据函数
read_temp();