我正在研究一个4位液晶显示器与8051微控制器的接口,但到目前为止我还没有成功。我有这个样本代码
/*
developed by S4silver
license type - open source
created on - 11/12/2014
modified on - 11/14/2014
modification details - refactored
developer - Frank Hust Jincson
contact mail id - [email protected]
web link - http://s4silver.blogspot.in/p/programmers-colony.html
*/
#include<reg51.h>
//#include"delay1s.h"
void Init_LCD(void);
void cmd_LCD(char cmd);
void display_LCD(char );
void write_LCD(char );
#define LCD P0
sbit RS=P0^0;
sbit RW=P0^1;
sbit EN=P0^2;
void delay()
{
int i;
TMOD=0X01;
for(i=0;i<=16;i++)
{
TR0=1;
while(!TF0);
TF0=0;
TR0=0;
}
}
main()
{
Init_LCD();
display_LCD('A');
}
void Init_LCD()
{
cmd_LCD(0x28);
cmd_LCD(0x0e);
cmd_LCD(0x01);
cmd_LCD(0x06);
cmd_LCD(0x80);
}
void cmd_LCD(char cmd)
{
LCD=(cmd&0xf0)|0x04; //0x20,en=1,rs=0
delay();
EN=0;
LCD=(cmd<<4)|0x04; //0x80,en=1,rs=0
delay();
EN=0;
}
void display_LCD(char c)
{
LCD=(c&0xf0)|0x05; //en=1,rs=1
delay();
EN=0;
LCD=(c<<4)|0x05; //en=1,rs=1
delay();
EN=0;
}
但这对我不起作用,我也不知道怎么了。
最佳答案
我使用了下面的C语言代码
#include<reg51.h>
#define lcdport P2
sbit rs=P3^0;
sbit rw=P3^1;
sbit en=P3^2;
void lcdcmd(char);
void lcdint();
void lcddata(char);
void lcdstring(char *);
void delay(unsigned int);
void main()
{
lcdport=0x00; // output port
while(1)
{
lcdint();
delay(500);
lcdstring("hello welcome to");
lcdcmd(0xc0);
delay(500000);
lcdstring("projectguru.net");
delay(500000);
}
}
void delay(unsigned int x)
{
unsigned int i;
for(i=0;i<x;i++);
}
void lcdint() // lcd initializing
{
lcdcmd(0x38);
delay(500);
lcdcmd(0x01);
delay(500);
lcdcmd(0x0c);
delay(500);
lcdcmd(0x80);
delay(500);
lcdcmd(0x0e);
delay(500);
}
void lcdcmd(char value) // lcd command
{
lcdport = value;
rw=0;
rs=0;
en=1;
delay(500);
en=0;
}
void lcdstring(char *p)
{
while(*p!='\0')
{
lcddata(*p);
delay(2000);
p++;
}
}
void lcddata(char value) // print data on lcd
{
lcdport = value;
rs=1;
rw=0;
en=1;
delay(500);
en=0;
}
这里提供完整的教程和视频http://www.mechaterrain.com/lcd-interfacing-8051
关于c - 8051微 Controller 接口(interface)4位LCD,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/27846697/