基于５１单片机的液晶显示程序及protues仿真原理图

#include<reg51.h> #define LCDP P2 sbit RS=P3^2; sbit RW=P3^1; sbit en=P3^0; char line1[]="LCM test program"; char line2[]="Everything is OK"; char line3[]="Welcome to china"; char line4[]="I love you"; void init_LCM(void); void write_inst(char); void write_char(char); void delay1ms(int); main() {char i; init_LCM(); while(1) {write_inst(0x80); for(i=0;i<16;i++) {write_char(line1[i]); delay1ms(10);} write_inst(0xC0); for(i=0;i<16;i++) {write_char(line2[i]); delay1ms(10);} write_inst(0x80); for(i=0;i<16;i++) {write_char(line3[i]); delay1ms(10);} write_inst(0xc0); for(i=0;i<16;i++) {write_char(line4[i]); delay1ms(10);} } } void init_LCM(void) {write_inst(0x30); delay1ms(10); write_inst(0x30); delay1ms(10); write_inst(0x30); delay1ms(10); write_inst(0x38); delay1ms(10); write_inst(0x08); delay1ms(10); write_inst(0x01); delay1ms(10); write_inst(0x06); delay1ms(10); write_inst(0x0e); delay1ms(10); } void write_inst(char inst) {RS=0;RW=0; en=1; LCDP=inst; en=0; } void write_char(char character) {RS=1;RW=0; en=1; LCDP=character; en=0; } void delay1ms(int x) {int i,j; for(i=1;i<x;i++) for(j=1;j<120;j++); }