LCD1602字符測試顯示程序與仿真

1、4,帕匕弓I匕TE：一raw口工E.4UW二f410注Z3LCD1lwUHlr-ai“尸IJ.：JmiEwnn11m/$3百盟iFU#includereg51.h#includeintrins.h#defineucharunsignedchar#defineuintunsignedintucharcodetablel=WELCOME;歡迎顯示，包括空格在內(nèi)二16;歡迎顯示，包括空格在內(nèi)=16ucharcodetable2二Name:*sbit lcd_rssbit lcd_en*管腳定義 *=P3A0；/液晶數(shù)據(jù)命令選擇端=P3A1; 液晶使能參數(shù)定義 *uinttvalue;/溫度值ucha

2、rtflag;/溫度正負(fù)標(biāo)志uchardatadisdata5;/*子函數(shù)定義*voiddelay(ucharz);/delay延時子程序voidinit_lcd();/LCD1602初始化函數(shù)voidwrite_com(ucharcom);/LCD1602寫指令函數(shù)voidwrite_data(uchardate);/LCD1602寫數(shù)據(jù)函數(shù)voidlcd1602_display(uchar*q,uchar*p);/LCD1602顯示函數(shù)void welcome_1();/LCD1602顯示歡迎函數(shù) 1/*主函數(shù)*voidmain()welcome_1();delay(200);while(

3、1);/*delay延時子程序 *voiddelay(ucharz)ucharx,y;for(x=0;xz;x+)for(y=0;y114;y+);/*LCD1602voidinit_lcd()lcd_en=0;write_com(0x38);write_com(0x08);write_com(0x01);write_com(0x06);write_com(0x0c);/*LCD1602初始化函數(shù)*/將使能端置0以完成脈沖/設(shè)置16*2顯示，5*7點陣，8位數(shù)據(jù)接口/寫一個字符后地址指針加1/顯示清零，數(shù)據(jù)指針清零/寫一個字符后地址指針加1/關(guān)顯示，光標(biāo)不顯示不閃爍寫指令函數(shù)*voidwrit

4、e_com(ucharcom)delay(5);lcd_rs=0;lcd_en=0;P2=com;delay(5);lcd_en=1;delay(5);lcd_en=0;/*LCD1602/選擇寫指令/將使能端置0/將要寫的命令送到數(shù)據(jù)總線上/延時5ms,待數(shù)據(jù)穩(wěn)定/由于初始化已將lcd_en置為/延時5ms,待數(shù)據(jù)穩(wěn)定/將使能端置0以完成脈沖*voidwrite_data(uchardate)delay(5);lcd_rs=1;lcd_en=0;P2=date;delay(5);lcd_en=1;delay(5);lcd_en=0;/*LCD1602/選擇寫數(shù)據(jù)/將使能端置0/將要寫的數(shù)據(jù)送到數(shù)據(jù)總線上/延時5ms,待數(shù)據(jù)穩(wěn)定/由于初始化已將lcd_en置為/延時5ms,待數(shù)據(jù)穩(wěn)定/將使能端置0以完成脈沖顯示函數(shù)*voidlcd1602_display(uchar*q,uchar*p)write_com(0x80);/現(xiàn)將數(shù)據(jù)指針定位到第一行第一個字處while(*q!=0)write_data(*q);q+;delay(1);write_com(0xc0);/現(xiàn)將數(shù)據(jù)指針定位到第二行第一個字處while(*p!=0)write_data(*p);p+;delay(1);顯示歡迎函數(shù)*/