lcd1602顯示c代碼

1、/*LCD1602顯示程序 晶振：12MHZ */*/#include <reg52.h>#include <intrins.h> #define uchar unsigned char#define uint unsigned inttypedef uchar BYTE;typedef uint WORD;typedef bit BOOL;sbit rs = P23;sbit rw = P24;sbit eq = P25;BYTE code dis1 = "lcd1602"BYTE code dis2 = "lin lin"vo

2、id delay(uchar x)uint y;for(;x>0;x-) for(y=100;y>0;y-); /延時(shí)子程序/*void delay(BYTE ms)BYTE i;while(ms-)for(i=0; i<250; i+)_nop_(); _nop_(); _nop_(); _nop_();*/測(cè)試LCD忙狀態(tài) 返回resultBOOL lcd_bz()BOOL result;rs = 0;rw = 1;eq = 1;_nop_(); _nop_(); _nop_(); _nop_();result = (BOOL)(P0 & 0x80);eq = 0

3、;return result;/寫(xiě)指令數(shù)據(jù)到LCDvoid lcd_wcmd(BYTE cmd)while(lcd_bz();cmd = (cmd&0x01)<<7)|(cmd&0x02)<<5)|(cmd&0x04)<<3)|(cmd&0x08)<<1)|(cmd&0x10)>>1)|(cmd&0x20)>>3)|(cmd&0x40)>>5)|(cmd&0x80)>>7);rs = 0;rw = 0;eq = 1;_nop_(); _

4、nop_(); P0 = cmd;delay(6);_nop_(); _nop_(); _nop_(); _nop_();/eq = 0;_nop_(); _nop_(); _nop_(); _nop_();eq = 0;/設(shè)定顯示位置void lcd_pos(BYTE pos)lcd_wcmd(pos | 0x80);/寫(xiě)入顯示數(shù)據(jù)到LCDvoid lcd_wdat(BYTE dat)while(lcd_bz();dat = (dat&0x01)<<7)|(dat&0x02)<<5)|(dat&0x04)<<3)|(dat&

5、0x08)<<1)|(dat&0x10)>>1)|(dat&0x20)>>3)|(dat&0x40)>>5)|(dat&0x80)>>7);rs = 1;rw = 0;eq = 1;P0 = dat;delay(6);_nop_(); _nop_(); _nop_(); _nop_();eq = 0; / _nop_(); _nop_(); _nop_(); _nop_(); / eq = 0;/LCD初始化void lcd_init()lcd_wcmd(0x38);lcd_wcmd(0x0c);lcd_wcmd(0x06);lcd_wcmd(0x01);void main()BYTE i;lcd_init();eq=0;delay(10);lcd_pos(0);/顯示第一行i = 0;while(dis1i != '0')lcd_wdat(dis1i);i+;lcd_