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#include #define uchar unsigned char #define uint unsigned int ***it lcden=P2^1; ***it lcdrs=P2^0; ***it lcdrw=P2^2; ***it adwr=P3^7; //***it adcs=P3^0; //oe ==gnd ***it eoc=P2^3; uchar code table[]="the illustion is"; uchar code table1[]="lx"; uint num,a,d,qian,bai,shi,ge,num1; uint illusion,temp; void init(void); //初始化函数 void delay(uint a); //延时函数 void write_com(uchar com); //写指令函数 void write_data(uchar date); //写数据函数 void display(uint d); //显示函数 void main() { void init(); //初始化 EA=1; //开总中断 ET0=1; //开定时器中断 TR0=1; //启动定时器 lcden=0; /***********对1602液晶的模式进行设置***************/ write_com(0x38); //设置16*2显示,5*7点阵,8位数据接口 write_com(0x0c); //设置开显示,不显示光标 write_com(0x06); //写一个字符后地址指针加一 write_com(0x01); //显示清零,数据指针清零 while(1) { /*******开始不断扫描P1引脚是否有信号,并且对信号进行计算和显示********/ if(P1!=0) { delay(10); if(P1!=0)//防止误判 { adwr=0; delay(5); adwr=1; delay(5); adwr=0; while(eoc); for(a=10;a>0;a--) {temp=illusion*4; temp=1000; display(temp);//显示照度 } }; }; } } /**********************初始化程序************************/ void init(void) { TMOD=0x01; //定时器0工作于计数方式1 TH0=(65536-5000)/256; TL0=(65536-5000)%256; //定时时间为50ms num=0; // adcs=0; // sign=0; // temp=0; write_com(0x80); } /*************延时函数每次延时50ms********************/ void delay(uint a) { uint b,c; for(b=a;b>0;b--) for(c=110;c>0;c--); } /************定时器中断函数*****************/ void to_time() interrupt 1 { TH0=(65536-5000)/256; //中断函数里重新赋初值 TL0=(65536-5000)%256; num++; if(num==20) //每20*50ms计算一次,并且将速度显示 { num=0; //标志位 illusion=P1; } } /***********写指令函数************/ void write_com(uchar com) { lcdrs=0; lcdrw=0; P0=com; //delay(5); lcden=1; delay(20); lcden=0; } /*********写数据函数*************/ void write_data(uchar date) { lcdrs=1; //delay(5); lcdrw=0; P0=date; // delay(5); lcden=1; delay(20); lcden=0; } /*************显示函数********************/ void display(uint illusion) { qian=illusion/1000; bai=illusion%1000/100; shi=illusion%100/10; ge=illusion%10; //速度范围为0至9999. for(num1=0;num1<20;num1++) //显示前面一段字符 { write_data(table[num1]); delay(20); }; write_com(0x80+0x41); //显示光照强度 write_data(0x30+qian); write_com(0x80+0x42); write_data(0x30+bai); write_com(0x80+0x43); write_data(0x30+shi); write_com(0x80+0x44); write_data(0x30+ge); write_com(0x80+0x47); for(num1=0;num1<2;num1++) { write_data(table1[num1]); delay(20); } write_com(0x80); }
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#include #define LCD1602_DB P0 //data bus 数据总线 ***it LCD1602_RS = P2^6; ***it LCD1602_RW = P2^5; ***it LCD1602_EN = P2^7; void InitLcd1602(); void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str); void main() { unsigned char str[] = "Welcome To Lcd"; InitLcd1602(); LcdShowStr(0,0,str); while(1); } void Read_Busy() //忙检测函数,判断bit7是0,允许执行;1禁止 { unsigned char sta; // LCD1602_DB = 0xff; LCD1602_RS = 0; LCD1602_RW = 1; do { LCD1602_EN = 1; sta = LCD1602_DB; LCD1602_EN = 0; //使能,用完就拉低,释放总线 }while(sta & 0x80); } void Lcd1602_Write_Cmd(unsigned char cmd) //写命令 { Read_Busy(); LCD1602_RS = 0; LCD1602_RW = 0; LCD1602_DB = cmd; LCD1602_EN = 1; LCD1602_EN = 0; } void Lcd1602_Write_Data(unsigned char dat) //写数据 { Read_Busy(); LCD1602_RS = 1; LCD1602_RW = 0; LCD1602_DB = dat; LCD1602_EN = 1; LCD1602_EN = 0; } void LcdSetCursor(unsigned char x,unsigned char y) //坐标显示 { unsigned char addr; if(y == 0) addr = 0x00 + x; else addr = 0x40 + x; Lcd1602_Write_Cmd(addr|0x80); } void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str) //显示字符串 { LcdSetCursor(x,y); //当前字符的坐标 while(*str != ' |