#include <reg52.h> // 引用标准库的头文件
#include <absacc.h>
#include <stdio.h>
#include <math.h>
#define uchar unsigned char
#define uint unsigned int
#define Timer1_H 0x06
#define Timer1_L 0x06
uchar code Table[]="I have a dream!";
uchar code Table_1[]="I'm not alone!";
sbit RS=P2^0; //data\command =H\L
sbit RW=P2^1; //read/write=H/L
sbit EN=P2^2; //LCD使能信号
sbit DQ = P3^5; // 数据通信线DQ
bit Conver_flag;
/************************Delay function************************/
void Delay(uint count) // Delay 1ms 11.0592MHz
{
uint i;
while(count--)
{
for (i=0;i<125;i++)
{}
}
}
/**************************LCD function****************************/
void Write_Com(uchar COM)
{
Delay(5);
EN=1;
RS=0;
RW=0;
P0=COM;
Delay(5)
EN=0;
}
void Write_Dat(uchar DAT)
{
Delay(5);
EN=1;
RS=1;
RW=0;
P0=DAT;
EN=0;
EN=0;
EN=1;
Delay(5);
}
void Init_Lcd() //初始化LCD
{
uchar i;
Write_Com(0x38);
Write_Com(0x0f); //恢复显示模式：显示器开、光标开、闪烁开。
Write_Com(0x07);
Write_Com(0x80);
for(i=0;i<15;i++)
{
Write_Dat(Table[i++]);
}
Write_Com(0x40);
for(i=0;i<15;i++)
{
Write_Dat(Table_1[i++]);
}
}
void Show_One_Char(uchar show_dat) //把1个字符显示到当前光标处
{
switch(show_dat)
{
case ' ': Write_Dat(0x20);break;
case '!': Write_Dat(0x21);break;
case '"': Write_Dat(0x22);break;
case '#': Write_Dat(0x23);break;
case '$': Write_Dat(0x24);break;
case '%': Write_Dat(0x25);break;
case '&': Write_Dat(0x26);break;
case '>': Write_Dat(0x27);break;
case '(': Write_Dat(0x28);break;
case ')': Write_Dat(0x29);break;
case '*': Write_Dat(0x2A);break;
case '+': Write_Dat(0x2B);break;
case '-': Write_Dat(0x2D);break;
case '.': Write_Dat(0x2E);break;
case '/': Write_Dat(0x2F);break;
case '=': Write_Dat(0x3D);break;
case '<': Write_Dat(0x3E);break;
case '?': Write_Dat(0x3F);break;
case '^': Write_Dat(0x5E);break;
case ':': Write_Dat(0x3A);break;
case '0': Write_Dat(0x30);break;
case '1': Write_Dat(0x31);break;
case '2': Write_Dat(0x32);break;
case '3': Write_Dat(0x33);break;
case '4': Write_Dat(0x34);break;
case '5': Write_Dat(0x35);break;
case '6': Write_Dat(0x36);break;
case '7': Write_Dat(0x37);break;
case '8': Write_Dat(0x38);break;
case '9': Write_Dat(0x39);break;
case 'A': Write_Dat(0x41);break;
case 'B': Write_Dat(0x42);break;
case 'C': Write_Dat(0x43);break;
case 'D': Write_Dat(0x44);break;
case 'E': Write_Dat(0x45);break;
case 'F': Write_Dat(0x46);break;
case 'G': Write_Dat(0x47);break;
case 'H': Write_Dat(0x48);break;
case 'I': Write_Dat(0x49);break;
case 'J': Write_Dat(0x4A);break;
case 'K': Write_Dat(0x4B);break;
case 'L': Write_Dat(0x4C);break;
case 'M': Write_Dat(0x4D);break;
case 'N': Write_Dat(0x4E);break;
case 'O': Write_Dat(0x4F);break;
case 'P': Write_Dat(0x50);break;
case 'Q': Write_Dat(0x51);break;
case 'R': Write_Dat(0x52);break;
case 'S': Write_Dat(0x53);break;
case 'T': Write_Dat(0x54);break;
case 'U': Write_Dat(0x55);break;
case 'V': Write_Dat(0x56);break;
case 'W': Write_Dat(0x57);break;
case 'X': Write_Dat(0x58);break;
case 'Y': Write_Dat(0x59);break;
case 'Z': Write_Dat(0x5A);break;
case 'a': Write_Dat(0x61);break;
case 'b': Write_Dat(0x62);break;
case 'c': Write_Dat(0x63);break;
case 'd': Write_Dat(0x64);break;
case 'e': Write_Dat(0x65);break;
case 'f': Write_Dat(0x66);break;
case 'g': Write_Dat(0x67);break;
case 'h': Write_Dat(0x68);break;
case 'i': Write_Dat(0x69);break;
case 'j': Write_Dat(0x6A);break;
case 'k': Write_Dat(0x6B);break;
case 'l': Write_Dat(0x6C);break;
case 'm': Write_Dat(0x6D);break;
case 'n': Write_Dat(0x6E);break;
case 'o': Write_Dat(0x6F);break;
case 'p': Write_Dat(0x70);break;
case 'q': Write_Dat(0x71);break;
case 'r': Write_Dat(0x72);break;
case 's': Write_Dat(0x73);break;
case 't': Write_Dat(0x74);break;
case 'u': Write_Dat(0x75);break;
case 'v': Write_Dat(0x76);break;
case 'w': Write_Dat(0x77);break;
case 'x': Write_Dat(0x78);break;
case 'y': Write_Dat(0x79);break;
case 'z': Write_Dat(0x7A);break;
default: break;
}
}
void Show_Char(uchar Char[]) // 把1个字符串显示到当前光标处
{
uchar Count;
for(Count=0;;Count++)
{
Show_One_Char(Char[Count]);
if(Char[Count+1]=='\0')
break;
}
}
/*********************DS18B20***function*************************/
void Reset_Tx(void) //reset
{
uint i;
DQ=0;
i=105;
while(i--); //approx 900us
DQ=1;
i=4;
while(i--) ;
}
void Wait_Rx(void) //Wait for Rx
{
uint i;
while(DQ); //DQ=1,then circulation
while(~DQ); //DQ=0, detected the Rx
i=4;
while(i--);
}
bit Rd_Bit(void) //read one bit
{
uint i;
bit dat;
DQ=0; i++;
DQ=1; i++;i++; // 延时15us以上，读时隙下降沿后15us，DS18B20输出数据才有效
dat=DQ;
i=8;
while(i--);
return(dat);
}
uchar Rd_Byte(void) //read one byte
{
uchar i,j,dat;
dat=0;
for(i=8;i>=1;i--)
{
j=Rd_Bit();
dat=(j<<7)|(dat>>1);
}
return(dat);
}
void Wt_Byte(uchar dat) //write one byte
{ uint i;
uchar j;
bit temp;
for(j=8;j>=1;j--)
{
temp=dat&0x01;
dat=dat>>1;
if(temp) //write 1
{
DQ=0;
i++;i++; // 延时，使得15us以内拉高
DQ=1;
i=8;while(i--); // 整个写1时隙不低于60us
}
else //write 0
{
DQ=0;
i=8;while(i--); // 保持低在60us到120us之间
DQ=1;i++;i++;
}
}
}
bit Convert_T(void) //convert T
{
Reset_Tx();
Wait_Rx();
Delay(1);
Wt_Byte(0xcc); //skip rom
Wt_Byte(0x44); //convert
return(1);
}
uchar Rd_T(void) //read T
{
uchar i,j,x,y,z;
Reset_Tx();
Wait_Rx();
Delay(1);
Wt_Byte(0xcc); //skip rom
Wt_Byte(0xbe); //read scratchpad
i=Rd_Byte(); //LSB
j=Rd_Byte(); //MSB
x=i>>4;
y=j<<4;
z=x|y;
return(z);
}
/******************************main**************************************/
void main(void)
{
uchar t_last;
Delay(1);
TMOD=0x21;
TH1=Timer1_H;
TL1=Timer1_L;
ET1=1; //开TIMER1中断
TR1=1; //启动
EA=1; //开总中断
while(1)
{
Init_Lcd();
Convert_T();
if(Convert_T())
{
Conver_flag=0;
TH0=55536/256; //开TIMER0
TL0=55536%256;
TR0=1;
EA=1;
}
if(Conver_flag)
{
Conver_flag=0;
t_last=Rd_T();
Show_Char("t_last");
Delay(1000); //Delay 1s
}
}
}
void Timer0(void) interrupt 1 //T0用于定时1s时间
{
uint Timer0_count;
Timer0_count++;
TR0=0;
if(Timer0_count==0)
{
Timer0_count=0;
Convert_T();
Conver_flag=1;
}
TH0=55536/256; //开TIMER0
TL0=55536%256;
TR0=1;
}
void Timer1(void) interrupt 3
{
uchar t_last;
TR1=0;
EA=0;
if(Conver_flag)
{
t_last=Rd_T();
Show_Char("t_last");
Delay(1000); //Delay 1s
}
TH1=Timer1_H;
TL1=Timer1_L;
EA=1; //开总中断
ET1=1; //开TIMER1中断
TR1=1; //启动
}
我是个初学者,在用proteus仿真的时候,LCD不显示,而且没有进中断.看了好久没有头绪,不知道是否要用中断去显示,问题出在哪呢?哪位仁兄指点一下!
非常感激! |
楼主
标题置顶
标题高亮
