lcd初始化c语言程序

1、用 1 位数码管显示按键的键值#include <REG51.h>#include <INTRINS.H>unsignedcharcodesz1=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;unsignedcharcodejp=0xee,0xde,0xbe,0x7e,0xed,0xdd,0xbd,0x7d,0xeb,0xdb,0xbb,0x7b,0xe7,0xd7,0xb7,0x77;unsigned char c=0;void delay(unsigne

2、d int t)unsigned char i;while(t-)for(i=0;i<125;i+);void sm() unsigned char k,j,n,a,m=0xfe;P2=0xf0;k=P2;k=k&0xf0;if(k!=0xf0) delay(5);if(k!=0xf0)for(j=0;j<4;j+) P2=m;n=P2;for(a=0;a<16;a+) if(jpa=n)c=a;m=_crol_(m,1);void main()while(1) sm();P1=sz1c;LCD 编程流程：1 .初始化（设定 LCD 的各种工作显示方式）2 .设定第一

3、行显示起始地址3 .送数据到数据端口，显示字符串4 .设定第二行显示起始地址5 .送数据到数据端口，显示数据1. 初始化：大概涉及到 4 个命令，发四次命令。所以把发命令编程子程序，调用子程序时只是命令代码不一样。void busy()rs=0;rw=1;en=1;delay(1);f=P0;en=0;busy1=f&0x80;void wc(unsigned char a) while(busy1=0x80);rs=0;rw=0;en=0;P0=a;en=1;delay(1);en=0;void chsh()wc(0x38);delay(1);wc(0x01);delay(1);wc

4、(0x0c);delay(1);wc(0x06);delay(1);Void main()chsh();2 .设定第一行显示起始地址Void main()wc(0x80);3 .送数据到数据端口，显示字符串送字符串到数据端口，实际上是逐个把数据送过去。所以把送数据编程子程序，调用子程序时只是数据不一样。unsigned char hy="The number is" void wd(unsigned char b)while(busy1=0x80);rs=1;rw=0;en=0;P0=b;en=1;delay(1);en=0;Void main() for(j=0;j<

5、;13;j+)wd(hyj);4 .设定第二行显示起始地址Void main()wc(0xc8); 5 .送数据到数据端口，显示数据void dispd(unsigned char c)unsigned char d;d=_crol_(c,4);d=d&0x0f;if(d<0x0a)d=d+0x30;elsed=d+0x37;wd(d);c=c&0x0f;if(c<0x0a) c=c+0x30;elsec=c+0x07;wd(c);Void main()Unsigned char e=0x43;dispd(e);实验：用 LCD 显示键盘的键值按键 启动 加 1 减

6、 1 暂停 倒计时程序void ds() interrupt 1 TH0=(65536-50000)/256;TL0=(65536-50000)%256;if(+m>19)n-;if(n=0)while(1)disp(0);F=1;delay(20);F=0;delay(20);m=0;按键 启动 加 1 减 1 暂停 倒计时#include <reg51.h>sbit K1=P2A0;/ 加 1sbit K2=P2A1;/ 减 1sbit K3=P2A2;/ 暂停sbit K4=P2A3;/ 启动sbit LED=P2A4;/ 发光二极管sbit F=P2A5;/ 蜂鸣器s

7、bit S0=P3A6;sbit S1=P3A7;void disp (unsigned char n);unsigned char m=0;unsigned char n=9;unsigned char code D=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90; void delay(unsigned int a) unsigned char b;while(-a)for(b=0;b<125;b+);void main()EA=1;ET0=1;TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;TR0=0;while(1)disp(n);if(K1=0)while(K1=0);disp(+n);if(K2=0)while(K2=0);disp(-n);if(K3=0)while(K3=0);TR0=0;disp(n);if(K4=0)while(K4=0);TR0=1;disp(n);void disp (unsigned char n)unsigned char i,j;i=n/10;j=n%10;P1=Di;S0=0;delay(20);P3=0xff;P1=Dj;S1=0;delay(20);P3=0xff;void ds() interrupt 1 TH