数字温度计C程序

实验内容：DS18b20温度传感器

晶振：11.0592M

实验连线:

#include

unsigned char disp0, disp1, disp2, disp3;

sbit DQ = P2^7;

sbit led0=P2^0;

sbit led1=P2^1;

sbit led2=P2^2;

sbit led3=P2^3;

sbit led4=P2^4;

sbit led5=P2^5;

#define Com_Buf 0x45//命令缓冲单元

#define Dat_Buf 0x46//数据缓冲单元

#define Leng 0x47//读写字节长度存放单元

#define Table 0x78//表首地址存放单元

#define SoftRes 0xe2//液晶软件复位指令

#define Disp_On 0xaf//液晶显示指令

#define Page_Add 0xb8//液晶页面选择指令

#define Col_Add 0x00//液晶列设置指令

#define Colen 0x43//列地址长度存储单元

#define dd 0xd0

typedef unsigned char BYTE;

#define Lcd_Bus P0 //MCU P1<------> LCM unsigned char code HK_HZ[12][16];

unsigned char code HK_HZ1[11][32];

sbit A0=P2^3; //Master chip enable

sbit E1=P2^0; //Slave chip enable

sbit E2=P2^1; //6800 mode Enable single

sbit RW=P2^2; //Data or Instrument Select

sbit Lcd_Rst=P2^4; //Lcm reset

/*------------------延时子程序-----------------------------*/ void delay(unsigned int t)

unsigned int i,j;

for(i=0;i

for(j=0;j<10;j++)

;

}

/*------------------写命令到LCD------------------------------*/ void write_com(unsigned char cmdcode)

{

A0=0;

Lcd_Bus=cmdcode;

E1=0;

E2=0;

//delay(1);

E1=1;

//delay(1);

E1=0;

//delay(1);

E2=1;

//delay(1);

E2=0;

//delay(1);

}

/*-------------------写数据到LCD----------------------------*/

void write_data(unsigned char Dispdata)

{

A0=1;

Lcd_Bus=Dispdata;

E1=0;

E2=0;

//delay(1);

E1=1;

//delay(1);

E1=0;

//delay(1);

E2=1;

//delay(1);

E2=0;

//delay(1);

}

/*-------------------写数据到LCD----------------------------*/

void write_data1(unsigned char Dispdata)

{

A0=1;

Lcd_Bus=Dispdata;

E1=0;

E2=0;

E1=1;

delay(1);

E1=0;

}

/*-------------------写数据到LCD----------------------------*/

void write_data2(unsigned char Dispdata)

{

A0=1;

Lcd_Bus=Dispdata;

E1=0;

E2=0;

E2=1;

delay(1);

E2=0;

}

/*------------------清除内存---------------*/

void Clr_Scr()

{

unsigned char j,k;

for(k=0;k<4;k++)

{

write_com(Page_Add+k);

write_com(Col_Add+0);

for(j=0;j<61;j++)

write_data(0x00);

}

/*---------------------指定位置显示汉字16*16-----------------------*/

void hz_disp16_1(unsigned char pag,unsigned char col, unsigned char code *hzk) {

unsigned char j=0,i=0;

for(j=0;j<2;j++){

write_com(Page_Add+pag+j);

write_com(Col_Add+col);

for(i=0;i<16;i++) write_data1(hzk[16*j+i]);

}

/*---------------------指定位置显示汉字------8*16---------------*/

void hz_disp16_2(unsigned char pag,unsigned char col, unsigned char code *hzk) {

unsigned char j=0,i=0;

for(j=0;j<2;j++){

write_com(Page_Add+pag+j);

write_com(Col_Add+col);

for(i=0;i<8;i++) write_data2(hzk[8*j+i]);

}

/*------------------初始化LCD屏--------------------------*/

void init_lcd()

{

Lcd_Rst=1;

A0=0;

RW=0;

delay(100);

write_com(SoftRes);//软复位

write_com(Disp_On);//打开显示

write_com(dd);

}

/*------------------------------温度信息显示------------------------*/

void Msg()

{

// Clr_Scr();

E1=1;E2=0;

hz_disp16_1(0,0,(BYTE *)&HK_HZ1[0][0]);

hz_disp16_1(0,15,(BYTE *)&HK_HZ1[1][0]);

hz_disp16_1(0,30,(BYTE *)&HK_HZ1[2][0]);

hz_disp16_1(0,45,(BYTE *)&HK_HZ1[3][0]);

E1=0;E2=1;

hz_disp16_2(2,0,(BYTE *)&HK_HZ[disp0][0]); //salver

hz_disp16_2(2,8,(BYTE *)&HK_HZ[disp1][0]);

hz_disp16_2(2,16,(BYTE *)&HK_HZ[10][0]);

hz_disp16_2(2,24,(BYTE *)&HK_HZ[disp2][0]);

hz_disp16_2(2,32,(BYTE *)&HK_HZ[disp3][0]);

hz_disp16_2(2,40,(BYTE *)&HK_HZ[11][0]);

}

/*------------------------------题号.姓名.学号信息显示------------------------*/ void Msg1()

{

Clr_Scr();

{ //

/*-- 文字: 张栋--*/

/*-- 宋体12; 宽x高=16x16 --*/

E1=1;E2=0;

hz_disp16_1(0,0,(BYTE *)&HK_HZ1[8][0]);

hz_disp16_1(0,15,(BYTE *)&HK_HZ1[4][0]);

hz_disp16_1(0,30,(BYTE *)&HK_HZ1[5][0]);

/*-- 学号: 90408605 --*/

/*-- 宽x高=8x16 --*/

E1=0;E2=1;

hz_disp16_2(0,0,(BYTE *)&HK_HZ[9][0]);

hz_disp16_2(0,8,(BYTE *)&HK_HZ[0][0]);

hz_disp16_2(0,16,(BYTE *)&HK_HZ[4][0]);

hz_disp16_2(0,24,(BYTE *)&HK_HZ[0][0]);

hz_disp16_2(0,32,(BYTE *)&HK_HZ[8][0]);

hz_disp16_2(0,40,(BYTE *)&HK_HZ[6][0]);

hz_disp16_2(0,48,(BYTE *)&HK_HZ[0][0]);

hz_disp16_2(0,56,(BYTE *)&HK_HZ[5][0]);

/*-- 文字: 李凡凡--*/

/*-- 宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/ E1=1;E2=0;

hz_disp16_1(2,0,(BYTE *)&HK_HZ1[6][0]);

hz_disp16_1(2,15,(BYTE *)&HK_HZ1[7][0]);

hz_disp16_1(2,30,(BYTE *)&HK_HZ1[7][0]);

/*-- 学号: 90402102 --*/

/*-- 宽x高=8x16 --*/

E1=0;E2=1;

hz_disp16_2(2,0,(BYTE *)&HK_HZ[9][0]);

hz_disp16_2(2,8,(BYTE *)&HK_HZ[0][0]);

hz_disp16_2(2,16,(BYTE *)&HK_HZ[4][0]);

hz_disp16_2(2,24,(BYTE *)&HK_HZ[0][0]);

hz_disp16_2(2,32,(BYTE *)&HK_HZ[2][0]);

hz_disp16_2(2,40,(BYTE *)&HK_HZ[1][0]);

hz_disp16_2(2,48,(BYTE *)&HK_HZ[0][0]);

hz_disp16_2(2,56,(BYTE *)&HK_HZ[2][0]); delay(20000);

}

/*DS18b20温度传感器读写程序(c51版)*/ void delayus(int us)

{

int s;

for ( s=0; s

}

void rst(void) //单线复位脉冲时序{

DQ = 1;

delayus(2); //大约在15us左右

DQ = 0;

delayus(30); //精确延时480~960us

DQ = 1;

delayus(8);

}

unsigned int read(void)

{

int i=0;

unsigned int u=0;

for (i=0;i<16;i++)

{

DQ = 0;

u >>= 1;

DQ = 1;

if(DQ) u|= 0x8000;

delayus(4);

}

return(u);

}

void write(unsigned char ku)

{

int i = 0;

for (i=0;i<8;i++)

{

DQ = 0;

DQ = ku&0x01;

delayus(3);

DQ = 1;

ku >>= 1;

}

void read0(void)

{

int t0,t1,t2;

unsigned int tp;

unsigned int lsb;

rst();

write(0xCC);

write(0x44);

rst();

write(0xCC);

write(0xBE);

tp = read();

lsb = (unsigned int)(tp*6.25);

t0 = lsb/1000;

disp0 = t0; //第1位,最高位

if(!t0) disp0 = 0x00;

t2 = lsb%1000;

t1 = t2/100;

disp1 = t1; //第2位

t1 = t2%100;

t2 = t1/10;

disp2 = t2; //第3位,最低位

disp3 = t1%10; //第4位,最低位

}

/*-- ------- 主程序------- --*/

void main()

{

Clr_Scr();

init_lcd();

read0();

Msg1();

delay(3000) ;

delay(3000) ; //调用输出汉字页面的程序

{

Clr_Scr();

init_lcd();

while(1){

read0();

Msg();

delay(3000) ;

Clr_Scr(); //温度显示页面程序

}

unsigned char code HK_HZ[][16]=

{ //H16 W8

0xF8,0xFC,0x04,0xC4,0x24, // -0- 0xFC,0xF8,0x00,0x07,0x0F,

0x09,0x08,0x08,0x0F,0x07,

0x00,

0x00,0x10,0x18,0xFC,0xFC, // -1-

0x00,0x00,0x00,0x00,0x08,

0x08,0x0F,0x0F,0x08,0x08,

0x00,

0x08,0x0C,0x84,0xC4,0x64, // -2-

0x3C,0x18,0x00,0x0E,0x0F,

0x09,0x08,0x08,0x0C,0x0C,

0x00,

0x08,0x0C,0x44,0x44,0x44, // -3-

0xFC,0xB8,0x00,0x04,0x0C,

0x08,0x08,0x08,0x0F,0x07,

0x00,

0xC0,0xE0,0xB0,0x98,0xFC, // -4-

0xFC,0x80,0x00,0x00,0x00,

0x00,0x08,0x0F,0x0F,0x08,

0x7C,0x7C,0x44,0x44,0xC4, // -5-

0xC4,0x84,0x00,0x04,0x0C,

0x08,0x08,0x08,0x0F,0x07,

0x00,

0xF0,0xF8,0x4C,0x44,0x44, // -6-

0xC0,0x80,0x00,0x07,0x0F,

0x08,0x08,0x08,0x0F,0x07,

0x00,

0x0C,0x0C,0x04,0x84,0xC4, // -7-

0x7C,0x3C,0x00,0x00,0x00,

0x0F,0x0F,0x00,0x00,0x00,

0x00,

0xB8,0xFC,0x44,0x44,0x44, // -8-

0xFC,0xB8,0x00,0x07,0x0F,

0x08,0x08,0x08,0x0F,0x07,

0x00,

0x38,0x7C,0x44,0x44,0x44, // -9-

0xFC,0xF8,0x00,0x00,0x08,

0x08,0x08,0x0C,0x07,0x03,

0x00,

// 10 0x00,0x00,0x00,0x00,0x00, // -.-

0x00,0x00,0x00,0x00,0x00,

0x00,0x0C,0x0C,0x00,0x00,

0x00,

0xF0,0xF8,0x0C,0x04,0x04, // -C- 11 0x0C,0x18,0x00,0x03,0x07,

0x0C,0x08,0x08,0x0C,0x06,

0x00,

} ;

unsigned char code HK_HZ1[][16]=

{

/*-- 文字: 当--*/