dotdisplay.c

这是一个大模式下ucos51的移植结果,因为大部分可载的ucos51都是小模式下的

#include <reg52.h>   //头函数
#include<stdio.h>
#include<stdlib.h> 
#include<intrins.h>
#include<absacc.h>
sbit P1_1=P1^1;
sbit P1_0=P1^0;
sbit P1_2=P1^2;
#define LCM_RW  P1_1   //定义引脚
#define LCM_RS  P1_0
#define LCM_E   P1_2
#define LCM_Data  P2    //数据线

#define Busy    0x80 //用于检测LCM状态字中的Busy标识

void WriteDataLCM(unsigned char WDLCM,unsigned char BuysC);
void WriteCommandLCM(unsigned char WCLCM,unsigned char BuysC);
unsigned char ReadDataLCM(void);
unsigned char ReadStatusLCM(void);
void LCMInit(void);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
void Delay5Ms(void);
void Delay400Ms(void);
unsigned char code uctech[] = {"welcome！"};
unsigned char code net[] = {"www.towintec.cn"};
unsigned char code content[] = {"0733-8298114"};

void DisplayDomain(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)
	//DisplayOneChar(1,0,1);
	//DisplayOneChar(2,1,2);
	DisplayListChar(3, 0, uctech);   //在第一行显示"welcome！"
	DisplayListChar(0, 1, net);      //在第二行显示"hxl_raien."
	ReadDataLCM();                   //测试用句，可以不要
//	while(1);                        //不断循环，也称“死循环”
}
void DisplayTel(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)
	//DisplayOneChar(1,0,1);
	//DisplayOneChar(2,1,2);
	DisplayListChar(3, 0, uctech);   //在第一行显示"welcome！"
	DisplayListChar(0, 1, content);      //在第二行显示"hxl_raien."
	ReadDataLCM();                   //测试用句，可以不要
//	while(1);                        //不断循环，也称“死循环”
}

//写数据
void WriteDataLCM(unsigned char WDLCM,unsigned char BuysC)
{
	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(unsigned char WCLCM,unsigned char 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
unsigned char ReadDataLCM(void)
{
	LCM_RS = 1; 
	LCM_RW = 1;
	LCM_E = 0;
	LCM_E = 0;
	LCM_E = 1;
	return(LCM_Data);
}
//读状态
unsigned char 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_RS = 1;
	LCM_RW = 1;
	LCM_E = 1;
//	LCM_Data = 0xff;
P2_0=1;
P2_1=1;
P2_2=1;
P2_3=1;
P2_4=1;
P2_5=1;
P2_6=1;
P2_7=1;*/
//	while(1);


	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(unsigned char X, unsigned char Y, unsigned char DData)  
                                   //x表示列、y 表示行
{
	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, 1);  //这里不检测忙信号，发送地址码
	WriteDataLCM(DData,1);
}
//按指定位置显示一串字符
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
{
unsigned char ListLength;
	ListLength = 0;
	Y &= 0x1;
	X &= 0xF;                      //限制X不能大于15，Y不能大于1
	while (DData[ListLength]>0x20) //若到达字串尾则退出,字符长度小于32
	  {
	   if (X <= 0xF)                //X坐标应小于0xF（15）
	    {
	     DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
	     ListLength++;
	     X++;
	    }
	  }
}
void Delay5Ms(void)
{
unsigned int TempCyc = 5552;
	while(TempCyc--);
}
void Delay400Ms(void)
{
unsigned char TempCycA = 5;
unsigned int TempCycB;
	while(TempCycA--)
	{
	  TempCycB=7269;
	  while(TempCycB--);
	};   
}