基于51单片机对1602液晶板的并行操作.doc

基于51单片机对1602液晶板的并行操作TX-1C板操作并行模式的1602液晶液晶第1，2脚是gnd和vcc第3脚是对比度调节第4脚是数据/指令选择端RS第5脚是读写选择端R/W，我们这次只写不读，故直接接地第6脚是读写使能EN第7到14脚是数据口。操作并行模式的1602液晶液晶第1，2脚是gnd和vcc第3脚是对比度调节第4脚是数据/指令选择端RS第5脚是读写选择端R/W，我们这次只写不读，故直接接地第6脚是读写使能EN第7到14脚是数据口，我们接STC89C52RC的P0口第15，16脚是背光源最终液晶显示Tom is playing the TNT game！C代码#include#include“MY51.H”voidwrite_data（uchardataValue）;/写数据voidwrite_cmd（ucharcmdValue）;/写指令ucharcodetableLCD1=“Tomisplaying”;ucharcodetableLCD2=“theTNTgame！”;voidlcdInit（）/初始化函数dula=0;/wela=0;/防止数码管误显，浪费电流lcdEN=low;/给高脉冲之前的状态lcdRS=high;/初始给高电平，其实上电默认也是高电平write_cmd（0x38）;/液晶显示模式初始化write_cmd（0x0c）;/打开液晶，不显示光标，光标不闪烁write_cmd（0x06）;/地址指针加加，且光标加加write_cmd（0x01）;/液晶数据指针和显示清零voidwrite_cmd（ucharcmdValue）/写入指令lcdRS=low;/刚上电时是高电平，低电平时是指令模式P0=cmdValue;delayms（1）;lcdEN=high;/一个高脉冲把数据读走delayms（1）;lcdEN=low;voidwrite_data（uchardataValue）/写入数据lcdRS=high;/高电平是数据模式P0=dataValue;delayms（1）;lcdEN=high;/给一个高脉冲delayms（1）;lcdEN=low;voidlcdShow（uchar*pValue）/液晶显示函数while（*pValue！=0）write_data（*pValue）;pValue+;voidmain（）lcdInit（）;/初始化lcdShow（tableLCD1）;/显示第一行write_cmd（0x80+0x40）;/重新设置数据显示指针lcdShow（tableLCD2）;/显示第二行while（1）;C代码#ifndef_MY51_H_#define_MY51_H_#include#includetypedefintint16;typedefinTINT16;typedefunsignedintuint16;typedefunsignedintUINT16;typedefunsignedshortuint;typedefunsignedshortUINT;typedefunsignedshortword;typedefunsignedshortWORD;typedefunsignedlonguint32;typedefunsignedlongUINT32;typedefunsignedlongDWORD;typedefunsignedlongdword;typedefsignedlongint32;typedefsignedlongINT32;typedeffloatfloat32;typedefdoubledouble64;typedefsignedcharint8;typedefsignedcharINT8;typedefunsignedcharbyte;typedefunsignedcharBYTE;/WINDOWS的windef.h里面是这么定义的typedefunsignedcharuchar;typedefunsignedcharUCHAR;typedefunsignedcharUINT8;typedefunsignedcharuint8;typedefunsignedcharBOOL;/windows中定义BOOL为inttypedefunsignedcharbool;/bool是c+的内置类型#defineTRUE1#definetrue1#defineFALSE0#definefalse0#defineopen1/open和close用于标志打开和关闭状态#defineOPEN1#defineclose0#defineCLOSE0#definelock0#definestart1#defineSTART1#definestop0#defineSTOP0#definekeyDown0#definekeyUp1#definegnd0/接地#defineGND0/接地#definehigh1/高电平#definelow0/低电平#defineyes1#defineYES1#defineno0#defineNO0sbitdula=P2;/段选锁存器控制控制笔段sbitwela=P2;/位选锁存器控制控制位置#defineledP1/灯总线控制sbitled0=P1