51 MCU drives 1602 LCD display c program-EEWORLD

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/*
Program effect: The single-chip microcomputer controls the LCD display 1602 to display letters and numbers, and the user can change the io
program copyright: http://www.51hei.com
*/
#include //header file
#define uchar unsigned char //macro definition
#define uint unsigned int
uchar code table[]="51HEI XING XING " ; //displayed letters
uchar code table1[]="51HEI MCU XUE YUAU" ;
sbit lcdrs=P1^0; //register selection pin
sbit lcdwr=P1^1; //read and write pin
sbit lcde=P1^2; //chip select pin
void delay(uchar x) //delay sub-function
{
uchar i,j;
for(i=x;i>0;i--)
for(j=110;j>0;j--);
}
void write_com(uchar com) //write instruction sub-function
{ //Write according to 1602 LCD display protocol
P2=com;
lcdrs=0;
lcdwr=0;
delay(5);
lcde=0;
delay(5);
lcde=1;
}
void write_dat(uchar dat) //Write data sub-function
{
P2=dat;
lcdrs=1;
lcdwr=0;
delay(5);
lcde=0;
delay(5);
lcde=1;
}
void init() //Initialization sub-function
{
write_com(0x01); //Clear screen
write_com(0x3f); //Function setting
write_com(0x0d); //Display control
write_com(0x06); //Input mode setting
}
void main()
{
uchar i; //Define local variables
init();
write_com(0x80+0x02+0x10); //Pointer position
for(i=0;i<15;i++) //Display
{
write_dat(table[i]);
delay(50); //Delay, used to adjust speed mismatch
}
write_com(0x80+0x40+0x10);
for(i=0;i<16;i++)
{
write_dat(table1[i]);
delay(50);
}
for(i=0;i<16;i++)
{
write_com(0x18);
delay(50);
}
while(1);
}

Reference address：51 MCU drives 1602 LCD display c program

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