51单片机控制LCD1602显示

精品文档51单片机控制LCD1602显示一、准备工作根据题目我们已经确定了控制器为51单片机。如果说有现成的单片机开发板的话通过杜邦线将单片机与LCD连接好，将程序下载到单片机中即可。若是没有单片机开发板，可以做一个最小系统。再者要是有单片机的下载器的话可以按照电路图直接搭建电路，将下载好程序的单片机放在电路里就行了。单片机开发板导购：/blog/static/1958594142011828373371/2、 硬件连线按照电路图链接电路即可，需要说明的是在这个电路图中，LCD的第三脚VEE没有接，这个脚是控制屏幕对比度的。可以将电位器的两端分别接VCC和GND，中间端接LCD的第三脚。如果需要LCD1602可以到这里看看：/blog/static/195859414201202010424580/三、程序#include#includesbit RS=P20;sbit RW=P21;sbit E=P22;sbit BF=P17;char world=Welcome!;char world1=Good morning!;void delay1ms()unsigned char i,j;for(i=0;i10;i+)for(j=0;j33;j+);void delay(unsigned char n)unsigned char i;for(i=0;in;i+)delay1ms();void nop(unsigned s)unsigned char i;for(i=0;is;i+)_nop_();/Test the LCD is busing(1) of not(0)unsigned char busytest(void)bit result;RS=0;RW=1;E=1;nop(4);result=BF;E=0;return result;/Writing the control worldvoid writecontrol(unsigned condata)while(busytest()=1);RS=0;RW=0;E=0;nop(2);P1=condata;nop(4);E=1;nop(4);E=0;/Writing the datavoid writedata(unsigned d)while(busytest()=1);RS=1;RW=0;E=0;P1=d;nop(4);E=1;nop(4);E=0;void lcdinit(void)delay(15);writecontrol(0x38);/8 bit;16*2;5*7delay(5);writecontrol(0x38);delay(5);writecontrol(0x38);delay(5);writecontrol(0x0f);/显示开，有光标，光标闪烁delay(5);writecontrol(0x06);/光标右移，字符不移delay(5);writecontrol(0x01);/清屏delay(5);void main()unsigned char i;lcdinit();delay(10);while(1)writecontrol(0x01);writecontrol(0x80);/第一行地址i=0;while(worldi!=0)writedata(worldi);i+;delay(150);for(i=0;i4;i+)delay(250);writecontrol(0xc0);/第二行地址i=0;while(world1i!=0)writedata(world1i);i+;delay(150);for(i=0;i4;i+)delay(250);作战靴、战术手套、背包等