1602.c.bak

1602液晶的驱动和读写程序 付LCD1602液晶的英文资料

#include"reg52.h"
#define uchar unsigned char
#define uint unsigned int
sbit LCM_RW=P3^3; 								/*定义引脚*/
sbit LCM_RS=P3^2;
sbit LCM_E=P3^4  ;
#define LCM_Data P0
#define Busy 0x80 								/*用于检测LCM状态字中的Busy标识*/ 

void WriteDataLCM(uchar WDLCM);
void WriteCommandLCM(uchar WCLCM,BuysC);
uchar ReadDataLCM(void);
uchar ReadStatusLCM(void);
void LCMInit(void);
void DisplayOneChar(uchar X, uchar Y, uchar DData);
void DisplayStrChar(uchar X, uchar Y, uchar *DData);
void Delay5Ms(void);
void Delay400Ms(void);

uchar code cdle_net[] = {"KP-51PRO V2.0"};
uchar code email[] = {"[e-mail]"};
void main(void)
{
        Delay400Ms(); 								/*启动等待，等LCM讲入工作状态*/
        LCMInit(); 								/*LCM初始化*/
	Delay5Ms(); 								/*延时片刻(可不要)*/
	DisplayStrChar(2, 0, cdle_net);
	DisplayStrChar(0, 1, email);
	while(1);
}
										/*写数据*/
void WriteDataLCM(uchar WDLCM)
{
	ReadStatusLCM(); 							/*检测忙*/
	LCM_Data = WDLCM;
	LCM_RS = 1;
	LCM_RW = 0;
	LCM_E = 0; 								/*若晶振速度太高可以在这后加小的延时*/
	LCM_E = 0; 								/*延时*/
	LCM_E = 1;
}
										/*写指令*/
void WriteCommandLCM(uchar WCLCM,BuysC) 					/*BuysC为0时忽略忙检测*/
{
	if (BuysC) ReadStatusLCM(); 						/*根据需要检测忙*/
	LCM_Data = WCLCM;
	LCM_RS = 0;
	LCM_RW = 0; 
	LCM_E = 0;
	LCM_E = 0;
	LCM_E = 1; 
}
										/*读数据*/
uchar ReadDataLCM(void)
{
	LCM_RS = 1; 
	LCM_RW = 1;
	LCM_E = 0;
	LCM_E = 0;
	LCM_E = 1;
	return(LCM_Data);
}
										/*读状态*/
uchar ReadStatusLCM(void)
{
	LCM_Data = 0xFF; 
	LCM_RS=0;
	LCM_RW = 1;
	LCM_E = 0;
	LCM_E = 0;
	LCM_E = 1;
	while (LCM_Data & Busy); 						/*检测忙信号*/
	return(LCM_Data);
}

void LCMInit(void) 								/*LCM初始化*/
{
	LCM_Data = 0;
	WriteCommandLCM(0x38,0); 						/*三次显示模式设置，不检测忙信号*/
	Delay5Ms(); 
	WriteCommandLCM(0x38,0);
	Delay5Ms(); 
	WriteCommandLCM(0x38,0);
	Delay5Ms(); 

	WriteCommandLCM(0x38,1); 						/*显示模式设置,开始要求每次检测忙信号*/
	WriteCommandLCM(0x08,1); 						/*关闭显示*/
	WriteCommandLCM(0x01,1); 						/*显示清屏*/
	WriteCommandLCM(0x06,1); 						/* 显示光标移动设置*/
	WriteCommandLCM(0x0C,1); 						/*显示开及光标设置*/

}										/*按指定位置显示一个字符*/
void DisplayOneChar(uchar X, uchar Y, uchar DData)
{
	Y &= 0x1;
	X &= 0xF; 								/*限制X不能大于15，Y不能大于1*/
	if (Y) X |= 0x40; 							/*当要显示第二行时地址码+0x40;*/
	X |= 0x80; 								/*算出指令码*/
	WriteCommandLCM(X, 0); 							/*这里不检测忙信号，发送地址码*/
	WriteDataLCM(DData);
}

										/*按指定位置显示一串字符*/
void DisplayStrChar(uchar X, uchar Y, uchar *DData)
{
	uchar ListLength;
	ListLength = 0;
	Y &= 0x1;
	X &= 0xF; 								/*限制X不能大于15，Y不能大于1*/
	while (DData[ListLength]>0) 						/*若到达字串尾则退出*/
		{
			if (X <= 0xF) 						/*X坐标应小于0xF*/
				{
					DisplayOneChar(X, Y, DData[ListLength]); /*显示单个字符*/
					ListLength++;
					X++;
				}
		}
}
										/*5ms延时*/
void Delay5Ms(void)
{
	uint TempCyc = 5552;
	while(TempCyc--);
}

										/*400ms延时*/
void Delay400Ms(void)
{
	uchar TempCycA = 5;
	uint TempCycB;
	while(TempCycA--)
		{
			TempCycB=7269;
			while(TempCycB--);
		}
}