单片机多路DS18B20测温显示芯片解密
- 芯片解密功 能：读取序列号并匹配序列号，并读温度值
- 芯片解密多功能试验板显示多路温度采集
- 芯片解密正常显示2个DS18B20温度
- 芯片解密正常读取DS18B20序列号
- 单片机：STC12C5A60S2
- 晶 振：11.0592M
- 作 者：苏义江改编自网络
- 时 间：2016-8-25
- ************************************************/
- #include <reg52.h>
- #include <intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit RS=P2^7;
- sbit RW=P2^6;
- sbit EN=P2^5;
- sbit DQ=P3^4; //传感器引脚
- sbit key=P3^7;
- sbit d1=P1^3;//指示灯
- sbit d2=P1^4;
- bit st=1;
- uchar code table0[]={"DuoLuWenDuXS:U "};
- uchar code table2[]={"SD: "}; //湿度
- uchar code table1[]={"0123456789ABCDEF"};
- //现有的2个DS18B20传感器的序列号ROM1,ROM2
- uchar DSrom[4][8]={//4个器件每个64位序列号
- {0x28,0xff,0x2a,0x0A,0x22,0x04,0x00,0xf6},//ROM1
- {0x28,0xFF,0x0b,0x0d,0x20,0x04,0x00,0x0a},//ROM2
- {0x28,0x0C,0xBA,0xBA,0x02,0x00,0x00,0x54},//ROM3
- {0x28,0xff,0x91,0x14,0x22,0x04,0x00,0xe4}//ROM4
- };
- int f[4]; //温度数组
- int tvalue; //温度值变量
- float ftvalue; //温度值变量
- uchar fCode[8];//序列号数组
- uint warnl=300; //设定温度值高
- uint warnh=992;//设定温度值低
- void ds1820wr(uchar dat);//写数据
- void ds1820rst();//ds1820复位
- uchar ds1820rd();//读数据
- void DispCode();//读取序列号
- uchar tflag;//温度正负标志
- //////////lcd1602程序////////////
- void delay1ms(uint ms)//延时1毫秒（不够精确的）
- {
- uint i,j;
- for(i=0;i<ms;i++)
- for(j=0;j<620;j++);
- }
- void wr_com(uchar com)//写指令//
- {
- delay1ms(1);
- RS=0;
- RW=0;
- EN=0;
- P0=com;
- delay1ms(1);
- EN=1;
- delay1ms(1);
- EN=0;
- }
- void wr_dat(uchar dat)//写数据//
- {
- delay1ms(1);;
- RS=1;
- RW=0;
- EN=0;
- P0=dat;
- delay1ms(1);
- EN=1;
- delay1ms(1);
- EN=0;
- }
- void lcd_init()//1602初始化设置//
- {
- delay1ms(15);
- wr_com(0x38);
- delay1ms(5);
- wr_com(0x08);delay1ms(5);
- wr_com(0x01);delay1ms(5);
- wr_com(0x06);delay1ms(5);
- wr_com(0x0c);delay1ms(5);
- }
- void display(uchar *p)//显示字符串
- {
- while(*p!='\0')
- {
- wr_dat(*p);
- p++;
- delay1ms(1);
- }
芯片解密
