rt1602c+ps2_key二号.c

RT1602C+PS2_KEY二号.rar

//单片机RT1602_C语言程序__RT1602C+PS2_KEY二号
//2006年4月8951_LCD_1602_Q_D_MCU适用
//AT89C54_Ver1.00
//KS0070(44780) 16x2 字符液晶屏驱动演示程序总线方式
//DB0=P1.0 DB1=P1.1 DB2=P1.2 DB3=P1.3 DB4=P1.4 DB5=P1.5
//DB6=P1.6 DB7=P1.7 R/W=P2.0 RS=P2.1  E=P2.7 
//[注]:AT89C51的晶振频率为12MHz或11MHz
//PS/2_Keyboard接线
//1=DATA=P3.7  2=NC  3=GND  4=VCC  
//5=CLK=P3.2   外部中断触发方式为低电平

#include <REGX51.H>
#include <stdio.h> 
#include <absacc.h>
#include <inTRins.h> 
#include <SS89BIN.h> 

#define LCM_RW P3_5 							//H读数据,L写数据 
#define LCM_RS P3_4								//H数据寄存器,L指令寄存器 
#define LCM_E  P3_3								//片选,下降沿触发
#define LCM_Data P1								//数据总线接P1口
#define Busy   0x80 							//用于检测LCM状态字中的Busy标识
#define sda    P3_7								//定义Keyboard数据端口引脚
sbit Key_Data=P3^7;								//定义Keyboard数据端口引脚
sbit Key_CLK =P3^2;    							//中断端口,时钟线    

unsigned char code cdle_net[]={"--www.cdle.net--"};
unsigned char code email[]={"[e-mail]"};
unsigned char code Cls[]={"                "};	//清屏或者显示空白
static unsigned char KeyV=0X00; 				//键值
static unsigned char IntNum=0; 					//中断次数计数
unsigned char lie,hang;							//lie为列值, hang为行值
bit dx=0;       								//大小写标志 dx==1时大写状态

void Delay5Ms(void)								//5ms延时
  	{unsigned int TempCyc=5552;
  	while(TempCyc--);
  	} 
unsigned char ReadDataLCM(void)					//读数据
  	{LCM_RS=1; 
  	LCM_RW=1;
  	LCM_E =0;
  	LCM_E =0;
  	LCM_E =1;
  	return(LCM_Data);
  	}  
unsigned char ReadStatusLCM(void)				//读状态
  	{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 WriteDataLCM(unsigned char WDLCM) 			//写数据
  	{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;
  	}
void WriteCommandLCM(unsigned char WCLCM,BuysC) //写指令,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; 
  	}  
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(0x0F,1); 					//显示开及光标设置
  	}  
void DisplayOneChar(unsigned char X,unsigned char Y,unsigned char DData)
  	{Y&=0x1;									//按指定位置显示一个字符
  	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); 						//发命令字
  	WriteDataLCM(DData); 						//发数据
  	}  
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData) 
  	{unsigned char ListLength;					//按指定位置显示一串字符
  	ListLength=0;
  	Y&=0x1;
  	X&=0xF; 									//限制X不能大于15,Y不能大于1
 	while(DData[ListLength]>0x19) 				//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++;
  			}
  		}
  	}  

void delay(int x)   							//PS2_延时程序
	{int i,j;
	for(i=0;i<600;i++)
		for(j=0;j<x;j++);
	}
void Decode() 
	{unsigned char data TempCyc;
    signed char data k;
    TempCyc=KeyV;
    switch(TempCyc) 							//键值与显示字符的对应关系
   		{case 0x8A: k=0; break; 				//0
        case 0x2C: k=1; break; 					//1
        case 0x3C: k=2; break; 					//2
        case 0x4C: k=3; break; 					//3
        case 0x4A: k=4; break; 					//4
        case 0x5C: k=5; break; 					//5
        case 0x6C: k=6; break; 					//6
        case 0x7A: k=7; break; 					//7
        case 0x7C: k=8; break; 					//8
        case 0x8C: k=9; break; 					//9
        case 0x38: k=10; break; 				//a
        case 0x64: k=11; break; 				//b
        case 0x42: k=12; break; 				//c
        case 0x46: k=13; break; 				//d
        case 0x48: k=14; break; 				//e
        case 0x56: k=15; break; 				//f
        case 0x68: k=16; break; 				//g
        case 0x66: k=17; break; 				//h
        case 0x86: k=18; break; 				//i
        case 0x76: k=19; break; 				//j
        case 0x84: k=20; break; 				//k
        case 0x96: k=21; break; 				//l
        case 0x74: k=22; break; 				//m
        case 0x62: k=23; break; 				//n
        case 0x88: k=24; break; 				//o
        case 0x9A: k=25; break; 				//p 
        case 0x2A: k=26; break; 				//q
        case 0x5A: k=27; break; 				//r
        case 0x36: k=28; break; 				//s
        case 0x58: k=29; break; 				//t
        case 0x78: k=30; break; 				//u
        case 0x54: k=31; break; 				//v
        case 0x3A: k=32; break; 				//w
        case 0x44: k=33; break; 				//x
        case 0x6A: k=34; break; 				//y
        case 0x34: k=35; break; 				//z
        case 0x98: k=63; break; 				//;
        case 0xAA: k=65; break; 				//=
        case 0xF2: k=68; break; 				//+
        case 0x52: k=-16;break; 				//空格键
        case 0xB0: k=101;break; 				//大小写控制键Caps lock
        } 
        if(k==101) {dx=!dx;} 					//按下大小写控制键时 大小写标志取反
		DisplayOneChar(2,0,KeyV/16+0x30); 
		DisplayOneChar(3,0,KeyV%16+0x30); 

  /*      if(k==-16) 								//空格键按下时
      		{DisplayOneChar(lie,hang,-16+'0');  //清除光标
			DisplayOneChar(lie+1,hang,79+'0');  //光标移一位
            }
        if(dx==0) 								//小写状态时显示
        	{DisplayOneChar(lie,hang,k+'0');    //小写字符             
            DisplayOneChar(lie+1,hang,79+'0');  //光标             
            }
        if(dx==1)								//大写状态时显示
        	{if(k>9&&k<=35)
            	{DisplayOneChar(lie,hang,(k+26)+'0');//大写字符
             	DisplayOneChar(lie+1,hang,79+'0');//光标
            	}
            if(k>=0&&k<=9) 
            	{DisplayOneChar(lie,hang,(k-10)+'0');//数字键对应的符号
	            DisplayOneChar(lie+1,hang,79+'0');//光标
            	}
         	}
        if(lie==16) 							//写满一行
         	{lie=0;hang=hang+1;					//换行
         	DisplayOneChar(lie,hang,79+'0');	//光标下移
			}	
         	else {lie=lie+2;}*/
    EA=1;
    delay(20);
    }
void Keyboard_out(void) interrupt 0
	{if((IntNum>0)&&(IntNum<9))
  		{KeyV=KeyV>>1; 							//因键盘数据是低>>高，结合上一句所以右移一位
        if(Key_Data==1) 						//当键盘数据线为1时   
         	{KeyV=KeyV|0x80;} 					//存储一位
        }
    IntNum++;   								//中断次数加一(中断一次接收一位数据)
    if(IntNum>10) 								//中断11次后数据发送完毕
    	{IntNum=0; 								//当中断11次后表示一帧数据收完,清变量准备下一次接收
        EA=0;   								//关中断等显示完后再开中
        Decode();
        }
	}
void TIME(int nt)								//延时函数
	{long int it=0;
	for(it=0;it<nt*1000;it++);
	return;
	}

void main(void)
{	P3_1=0;P3_2=1;TIME(3);						//指示灯闪烁
	P3_1=1;P3_2=0;TIME(3);	
	P3_1=0;P3_2=1;TIME(3);		

	TIME(1);									//启动时延时,等待LCM进入工作状态
	LCMInit();				    				//LCM初始化
	Delay5Ms(); 								//延时片刻(可不要)
 	DisplayListChar(1,0,"Liao Quan Xin!");		//第一排1位显示的字符,14字	
 	DisplayListChar(0,1,cdle_net);				//第二排0位显示的字符,16字
// 	DisplayListChar(0,1,email);					//第二排0位显示的字符,16字
  	ReadDataLCM();								//测试用句无意义

	TIME(20);									//延时
	DisplayListChar(0,0,Cls); 					//清屏
	DisplayListChar(0,1,Cls); 

  	IT0=0; 										//设外部中断0为低电平触发
	EA=1;
	EX0=1; 										//开中断
  	while(1);


}