单片机仿真 2×20串行字符液晶演示.rar

/*************** writer:shopping.w ******************/ #include <reg52.h> #define uint unsigned int #define uchar unsigned char uchar code prompts[]=" Serial LCD DEMO "; void DelayMS(uint ms) { uchar i; while(ms--) { for(i=0;i<120;i++); } } void putc_to_LCD(uchar c) { SBUF = c; while(TI == 0); TI = 0; } uchar getc_from_terminal() { while(RI == 0); RI = 0; return SBUF; } void wrcmd(uchar comm) { putc_to_LCD(0xfe); putc_to_LCD(comm); } void main() { uchar i=0,c; TMOD = 0x20; TH1 = 0xfd; TL1 = 0xfd; SCON = 0x50; RI = 0; TI = 0; TR1 = 1; DelayMS(200); while(prompts[i] != '\0') { putc_to_LCD(prompts[i+1]); DelayMS(5); } wrcmd(0xc0); wrcmd(0x0d); DelayMS(120); while(1) { c = getc_from_terminal(); if(c==0x0d) { wrcmd(0x01); continue; } if(c==0x08) { wrcmd(0x10); continue; } putc_to_LCD(c); DelayMS(200); } }