#include

#include

#define Delaynop(){_nop_();_nop_();_nop_();_nop_();}

sbit RS=P2^0;

sbit RW=P2^1;

sbit EN=P2^2;

void Delayms(unsigned int ms);

bit LCD_Busy();

void LCD_Pos(unsigned char);

void LCD_Wcmd(unsigned char);

void LCD_Wdat(unsigned char);

char code Title_Text[]={"--Phone Code-- "};

unsigned char code Key_Table[]={'1','2','3','4','5','6','7','8','9','*','0','#'};

unsigned char Dial_Code_Str[]={" "};

unsigned char KeyNo=0xff;

int tCount=0;

//毫秒级延时函数

void Delayms(unsigned int x)

{

unsigned char i;

while(x--)

{

for(i=0;i<120;i++);

}

}

//显示字符串

void Display_String(unsigned char *str,unsigned char LineNo)

{

unsigned char k;

LCD_Pos(LineNo);

for(k=0;k<16;k++)

{

LCD_Wdat(str[k]);

}

}

//检查1602是否处于忙装填

bit LCD_Busy_Check()

{

bit Result;

RS=0;

RW=1;

EN=1;

Delaynop();

Result=(bit)(P0 & 0x80);

EN=0;

return Result;

}

//向1602写入指令的函数

void LCD_Write_Command(unsigned char cmd)

{

while(LCD_Busy_Check()); //检查是否处于忙状态

RS=0;

RW=0;

EN=0;

_nop_();

_nop_();

P0=cmd; //写入指令

Delaynop();

EN=1;

Delaynop();

EN=0;

}

//向1602写数据

void LCD_Wdat(unsigned char dat)

{

while(LCD_Busy_Check()); //检查是否处于忙状态

RS=1;

RW=0;

EN=0;

P0=dat; //写入数据

Delaynop();

EN=1;

Delaynop();

EN=0;

}

//初始化1602

void Init_LCD()

{

LCD_Write_Command(0x38);Delayms(5);

LCD_Write_Command(0x01);Delayms(5);

LCD_Write_Command(0x06);Delayms(5);

LCD_Write_Command(0x0c);Delayms(5);

}

//设置显示位置

void LCD_Pos(unsigned char pos)

{

LCD_Write_Command(pos|0x80);

}

/*

//T0的中断服务子函数

void T0Deal()interrupt 1

{

TH0=-600/256;

TL0=-600%256;

if(++tCount==200)

{

tCount=0;

TR0=0;

}

}

*/

//按键扫描函数，返回值为对应的按键编码

unsigned char GetKey()

{

unsigned char i,j,k=0;

unsigned char KeyScanCode[]={0xef,0xdf,0xbf,0x7f}; //行列扫描的行列码

unsigned char KeyCodeTable[]={

0xee,0xed,0xeb,0xde,0xdd,0xdb,0xbe,0xbd,0xbb,0x7e,0x7d,0x7b};

P3=0x0f;

if(P3!=0x0f) //如果有按键被按下

{

for(i=0;i<4;i++) //依次进行扫描

{

P3=KeyScanCode[i];

for(j=0;j<3;j++)

{

k=i*3+j; //计算对应的按键编码

if(P3==KeyCodeTable[k])

{

return k; //返回按键编码

}

}

}

}

else

{

return 0xff; //或者返回0xff

}

}

//主函数

void main()

{

unsigned char i=0,j;

P0 = 0xFF;

P2 = 0xFF;

P1 = 0xFF; //初始化端口

// IE=0x82; //设置中断

// TMOD=0x01; //启动T0定时器

Init_LCD(); //初始化1602

Display_String(Title_Text,0x00); //显示 --Phone Code--

while(1)

{

KeyNo = GetKey(); //获得按键状态

if(KeyNo==0xff)

{

continue; //如果没有按键，则进入下一个循环

}

if(++i==12) //如果已经超过11个数字，清除显示屏幕

{

for(j=0;j<16;j++)

Dial_Code_Str[j]=' ';

i=0;

}

Dial_Code_Str[i]=Key_Table[KeyNo]; //显示拨号数据

Display_String(Dial_Code_Str,0x40);

// TR0=1;

while(GetKey()!=0xff);

}

}