单片机1602显示程序

❶ 51 单片机和DAC0832输出方波、矩形波和正弦波由液晶1602显示的C语言程序

显示频率，幅度可调，可产生四种波形，正弦波，方波，锯齿波，三角波，希望你能喜欢，给你发了一张效果图，喜欢的话别忘了采纳我的回答啊

#include<reg52.h>

#defineucharunsignedchar

#defineuintunsignedint

#defineDAdataP0 //DA数据端口

sbitDA_S1=P2^0;//控制DAC0832的8位输入寄存器，仅当都为0时，可以输出数据(处于直通状态)，否则，输出将被锁存

sbitDA_S2=P2^1;//控制DAC0832的8位DAC寄存器，仅当都为0时，可以输出数据(处于直通状态)，否则，输出将被锁存

sbitkey=P3^2;

ucharwavecount;//'抽点'计数

ucharTHtemp,TLtemp;//传递频率的中间变量

ucharjudge=1;//在方波输出函数中用于简单判别作用

ucharwaveform; //当其为0、1、2时，分别代表三种波

ucharcodefreq_unit[3]={10,50,200};//三种波的频率单位

ucharidatawavefreq[3]={1,1,1}; //给每种波定义一个数组单元，用于存放单位频率的个数

ucharcodelcd_hang1[]={"SineWave""TriangleWave""SquareWave""SelectWave:""pressNo.1key!"};

ucharidatalcd_hang2[16]={"f=Hz"};

ucharcodewaveTH[]={

0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,

0xec,0xf6,0xf9,0xfb,0xfc,0xfc,0xfd,0xfd,0xfd,0xfe};

ucharcodewaveTL[]={

0x06,0x8a,0x10,0x4e,0x78,0x93,0xa8,0xb3,0xbe,0xc6,//正弦波频率调整中间值

0xac,0xde,0x48,0x7a,0x99,0xaf,0xbb,0xc8,0xd0,0xde, //三角波频率调整中间值

0x88,0x50,0x90,0x32,0x34,0xbe,0x4a,0xa3,0xe5,0x2c};

/*************************************************************************************************/

ucharcodetriangle_tab[]={ //每隔数字8，采取一次

0x00,0x08,0x10,0x18,0x20,0x28,0x30,0x38,0x40,0x48,0x50,0x58,0x60,0x68,0x70,0x78,

0x80,0x88,0x90,0x98,0xa0,0xa8,0xb0,0xb8,0xc0,0xc8,0xd0,0xd8,0xe0,0xe8,0xf0,0xf8,0xff,

0xf8,0xf0,0xe8,0xe0,0xd8,0xd0,0xc8,0xc0,0xb8,0xb0,0xa8,0xa0,0x98,0x90,0x88,0x80,

0x78,0x70,0x68,0x60,0x58,0x50,0x48,0x40,0x38,0x30,0x28,0x20,0x18,0x10,0x08,0x00};

ucharcodesine_tab[256]={

//输出电压从0到最大值（正弦波1/4部分）

0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,

0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,

0xee,0xef,0xf1,0xf2,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,

//输出电压从最大值到0（正弦波1/4部分）

0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,

0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,

0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,

//输出电压从0到最小值（正弦波1/4部分）

0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43,

0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x15,0x13,

0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,

//输出电压从最小值到0（正弦波1/4部分）

0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,

0x11,0x13,0x15,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,

0x40,0x43,0x45,0x48,0x4c,0x4e,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80};

voiddelay(ucharz)

{

uintx,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

voidtriangle_out() //三角波输出

{

DAdata=triangle_tab[wavecount++];

if(wavecount>64)wavecount=0;

DA_S1=0;//打开8位输入寄存器

DA_S1=1;//关闭8位输入寄存器

}

voidsine_out() //正弦波输出

{

DAdata=sine_tab[wavecount++];

DA_S1=0;//打开8位输入寄存器

DA_S1=1;//关闭8位输入寄存器

}

voidsquare_out()//方波输出

{

judge=~judge;

if(judge==1)DAdata=0xff;

elseDAdata=0x00;

DA_S1=0;//打开8位输入寄存器

DA_S1=1;//关闭8位输入寄存器

}

/************1602液晶的相关函数*************/

#definelcd_portsP1

sbitrs=P2^2;

sbitrw=P2^3;

sbitlcden=P2^4;

voidwrite_com(ucharcom)

{

rs=0; //置零，表示写指令

lcden=0;

lcd_ports=com;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

voidwrite_date(uchardate)

{

rs=1; //置1，表示写数据（在指令所指的地方写数据）

lcden=0;

lcd_ports=date;

delay(5);

lcden=1;

delay(5);

lcden=0;

}

voiddisp_lcd(ucharaddr,uchar*temp1)

{

ucharnum;

write_com(addr);

delay(1);//延时一会儿???

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

{

write_date(temp1[num]);//或者这样写write_date(*(temp1+num));

delay(1);

}

}

voidinit_lcd()

{

//ucharnum;

lcden=0;//可有可无???

rw=0;//初始化一定要设置为零，表示写数据

write_com(0x38);//使液晶显示点阵，为下面做准备

write_com(0x0c);//初始设置

write_com(0x06);//初始设置

write_com(0x01);//清零

write_com(0x80);//使指针指向第一行第一格

disp_lcd(0x80,&lcd_hang1[3*16]);//在第一行显示

disp_lcd(0xc0,&lcd_hang1[4*16]);//在第二行显示

}

/********************1602液晶函数声明结束*********************/

voidmain()

{

uchari=0;

DA_S2=0;//使DAC寄存器处于直通状态

DAdata=0;

DA_S1=1;//关闭8位输入寄存器

init_lcd();

waveform=0;

TMOD=0x01;//设置定时器0为16位工作方式

IT0=1;//设置外部中断0为下降沿触发

ET0=1;//开定时器中断

EX0=1;

EA=1;

while(1)

{

//DAout(0xff); //可输出TTL波形

//DAout(0x80);

//T_temp=32;

}

}

voidtimer0()interrupt1

{

TH0=THtemp;

TL0=TLtemp;

if(waveform==0)sine_out();

elseif(waveform==1)triangle_out();

elseif(waveform==2)square_out();

}

voidkey_int0()interrupt0

{

ucharkeytemp;

uinttotal_freq;//总频率

EA=0;TR0=0;//关总中断与定时器

delay(5);//延时够吗???

if(key==0)//确实有按键按下而引发中断

{

keytemp=P3&0xf0;//获取P3口高四位的值

switch(keytemp)

{

case0xe0: //选择波形

waveform++;

if(waveform>2)waveform=0;

break;

case0xd0://频率按规定单位依次增加

wavefreq[waveform]++;

if(wavefreq[waveform]>10)wavefreq[waveform]=1;///*这边要用“>10”，因为它比“=11”可靠

break; //性更高,使加数有个上限，不会一直加下去*/

case0xb0://频率按规定单位依次衰减

wavefreq[waveform]--;

if(wavefreq[waveform]<1)wavefreq[waveform]=10;//这边要用“<1”，因为它比“=0”可靠性更高

break;

case0x70://TTL输出

DA_S2=1;//使DAC寄存器关闭

break;

}

THtemp=waveTH[waveform*10+(wavefreq[waveform]-1)];//方括号中选取第几个数后，并把该值赋给T_temp

TLtemp=waveTL[waveform*10+(wavefreq[waveform]-1)];

total_freq=wavefreq[waveform]*freq_unit[waveform];//求输出频率（个数*单位）

lcd_hang2[5]=total_freq%10+0x30;//在液晶中显示个位，(0x30在液晶显示中表示数字0)

total_freq/=10;lcd_hang2[4]=total_freq%10+0x30;//在液晶中显示时十位

total_freq/=10;lcd_hang2[3]=total_freq%10+0x30;//在液晶中显示时百位

total_freq/=10;lcd_hang2[2]=total_freq%10+0x30;//在液晶中显示时千位

disp_lcd(0x80,&lcd_hang1[waveform*16]);//在第一行显示

disp_lcd(0xc0,lcd_hang2);//在第二行显示

}

wavecount=0;//'抽点'计数清零

while(!key);

EA=1;TR0=1;//开启总中断与定时器

}

❷ 单片机1602液晶怎样移屏怎样设置光标闪烁谁有没有这样的C程序

#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar data a[ ]="xian zai shi ";
sbit key0= P2^0;//功能键，对位进行选择
sbit key1=P2^1;// 加位
sbit key2= P2^2;// 减位
sbit EN= P3^4; //读写段
sbit RS= P3^5; //使能端
uchar miao,fen,shi;
uchar gongleng;//功能键中间变量
uchar g,key0sum;
void xunhuan (uint x)
{
int y,z;
for (y=x;y>0;y--)
for (z=120;z>0;z--);
}

void write_e(uchar e ) //写密命
{
RS=0;
P1=e;
xunhuan(5);
EN=1;//给使能端一个高脉冲， 因为上升源完成指令
xunhuan(5);
EN=0; //芯片停止工作
}
void write_f(uchar f) //写操作
{
RS=1;
P1=f;
xunhuan(5);
EN=1;
xunhuan(5);
EN=0;
}

void write_wei(uchar wei, uchar shu ) //一个显示时间，一个现实在液晶屏那个位置
{
uchar shi,ge;
shi=shu/10; //显示两位数的高位
ge=shu%10; // 显示两位数的高低
write_e(0x80+0x40+wei);
write_f(0x30+shi);
write_f(0x30+ge);
}

void init ()
{
EN=0;//使能端
miao=0;
fen=0;
shi=0;
write_e(0x38);
write_e(0x0c);
write_e(0x06);
write_e(0x01);
//write_e(0x80+0x40);
for (g=0;g<16;g++) //显示现在时间
{
write_f(a[g]);
xunhuan(10);
}

write_e(0x80+0x40+6 ); //将要显示的位置
write_f(':');
xunhuan(5);
write_wei(4,shi);// 时的位置

write_e(0x80+0x40+9 );//将要显示的位置
write_f(':');
xunhuan(5);
write_wei(7,fen);//分的位置

TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
EA=1;
ET0=1;
TR0=1;
}

void keysan() //按键功能端
{
if(key0==0) //判断功能键的按下
{
xunhuan(20);

if(key0==0)
{
(key0sum)++;
while(!key0) ;

if(key0sum==1)
{
TR0=0 ;//关闭定时器终段位
write_e(0x80+0x40+10 );//移动到秒
write_e(0x0f);//光标闪烁，
}
if(key0sum==2)
{
TR0=0 ;//关闭定时器终段位
write_e(0x80+0x40+7 );//移动到分
write_e(0x0f);//光标闪烁，
}

if(key0sum==3)
{
TR0=0 ;//关闭定时器终段位
write_e(0x80+0x40+4 );//移动到时
write_e(0x0f);//光标闪烁，
}
if(key0sum==4)
{
TR0=1 ;//关闭定时器终段位
key0=0 ;//移动到秒
write_e(0x0c);//取消光标闪烁，
}
}
}

/**************/

if (key0!=0 )//判断功能键是否按下去
{
if(key1==0)
{
xunhuan(20);
if(key1==0) //按键的加位
{
while(!key1);
/*********************///秒
if(key0sum==1) //若功能键按下时一次，说明 光标移到秒
{
miao++;
if(miao==60)

miao=0;
write_wei(10,miao);// 将位和数送到秒
write_e(0x80+0x40+10);
}

/***************************/ //分
if(key0sum==2) //若功能键按下时一次，说明移到分
{
fen++;
if(fen==60)

fen=0;
write_wei(7,fen);// 将位和数送到fen
write_e(0x80+0x40+7);
}

/****************/ //时
if(key0sum==3) //若功能键按下时一次，说明移到分
{
shi++;
if(shi==60)

shi=0;
write_wei(4,shi);// 将位和数送到fen
write_e(0x80+0x40+4);
}
}
}
}
}

void main()
{
uint m;
init();
write_e(0x80);
for(m=0;m<16;m++)
{
write_f(a[m]);
xunhuan(5);
}
while(1)
{

keysan();
}

}

void T0_timer () interrupt 1
{

TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
g++;
if(g==20)
{
g=0;
miao++;

if(miao==60)
{
miao=0;
fen++;

if(fen==60)
{
fen=0;
shi++;

if(shi==24)
{
shi=0;
}
write_wei(4,shi);
}
write_wei(7,fen);
}
write_wei(10,miao);

}

}