这是我写的代码,目的是按下键盘的第几个键,就在lcd12864的第一行第一个地址显示出按键的序号,现在出问题了,请大家帮帮忙!
#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define Busy 0x80
#define LCMdata P0
sbit RST=P3^4;
sbit RS=P3^5;
sbit RW=P3^6;
sbit E=P3^7;
uchar num,temp,num1;
uchar code string_1[] = {0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,0x45,0x46};
//*********必要声明*****************
uchar keyscan(key); //键盘扫描函数,返回第几个键盘
void Display_String(uchar line,uchar *string);//12864显示字符串函数
void write_12864com(uchar com); //12864写指令函数
void write_12864dat(uchar dat); //12864写数据函数
void Lcm_Init(void); //12864初始化函数
void RDbf(void); //12864读忙状态函数
void delay_ms(uint ms_number); //12864延时函数
//********延时函数**********************
//11.05902M晶振,参数是几就延时几毫秒,
void delay_ms(uint ms_number)
{
uint t;
uchar j;
for(t=0;t<ms_number;t++)
{
for(j=0;j<200;j++);
for(j=0;j<102;j++);
}
}
//**************************************
//*********延时函数********************
/* 11.0592MHz 晶振延时50us
void delay_50us(uint t)
{
uchar j;
for(;t>0;t--)
for(j=19;j>0;j--);
}
**************************************/
//****************键盘扫描函数**********************
uchar keyscan()
{
P2=0xfe;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
delay_ms(5);
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
temp=P2;
switch(temp)
{
case 0xee:num=0;
break;
case 0xde:num=1;
break;
case 0xbe:num=2;
break;
case 0x7e:num=3;
break;
}
while(temp!=0xf0)
{
temp=P2;
temp=temp&0xf0;
}
}
}
P2=0xfd;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
delay_ms(5);
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
temp=P2;
switch(temp)
{
case 0xed:num=4;
break;
case 0xdd:num=5;
break;
case 0xbd:num=6;
break;
case 0x7d:num=7;
break;
}
while(temp!=0xf0)
{
temp=P2;
temp=temp&0xf0;
}
}
}
P2=0xfb;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
delay_ms(5);
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
temp=P2;
switch(temp)
{
case 0xeb:num=8;
break;
case 0xdb:num=90;
break;
case 0xbb:num=10;
break;
case 0x7b:num=11;
break;
}
while(temp!=0xf0)
{
temp=P2;
temp=temp&0xf0;
}
}
}
P2=0xf7;
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
delay_ms(5);
temp=P2;
temp=temp&0xf0;
while(temp!=0xf0)
{
temp=P2;
switch(temp)
{
case 0xe7:num=12;
break;
case 0xd7:num=13;
break;
case 0xb7:num=14;
break;
case 0x77:num=15;
break;
}
while(temp!=0xf0)
{
temp=P2;
temp=temp&0xf0;
}
}
}
return num;
}
//***********12864读忙状态函数***********
void RDbf(void)
{
while(1)
{
RS=0;
RW=1;E=0;
LCMdata=0xFF;
E=1;
if((P0&Busy)==0)
break;
}
}
//*************************************
//*******12864写指令函数*********************
void write_12864com(uchar wrcommand,busyc)
{
if(busyc)
RDbf();
RS=0;
RW=0;
E=1;
LCMdata=wrcommand;
E=0;
}
//***************************************
//*********12864写数据函数********************
void write_12864dat(uchar wrdata) //写数据函数
{
RDbf();
RS=1;
RW=0;
E=1;
LCMdata=wrdata;
E=0;
}
//****************************************
//**********12864初始化函数***************
void Lcm_Init(void)
{
delay_ms(5);
RST=1;
RST=0;
RST=1;
write_12864com(0x30,0);
delay_ms(5);
write_12864com(0x30,0); //2次显示模式设置,不用判忙
delay_ms(5);
write_12864com(0x0C,1); //开显示及光标设置
delay_ms(5);
write_12864com(0x01,1); //显示清屏
delay_ms(5);
delay_ms(5);
write_12864com(0x06,1); //显示光标移动设置
delay_ms(5);
}
//*************************************
//*************12864显示函数**************
void Display_String(uchar line,string)
{
uchar addr;
if(line==1)
addr=0x80;
else if(line==2)
addr=0x90;
else if(line==3)
addr=0x88;
else if(line==4)
addr=0x98;
write_12864com(addr,1);
write_12864dat(string_1[string]);
}
//************主函数*****************
void main()
{
uchar key;
Lcm_Init();
while(1)
{
key=keyscan(); //调用键盘扫描,
switch(key)
{
case 0:Display_String(1,0);
case 1:Display_String(1,1);
case 2:Display_String(1,2);
case 3:Display_String(1,3);
case 4:Display_String(1,4);
case 5:Display_String(1,5);
case 6:Display_String(1,6);
case 7:Display_String(1,7);
case 8:Display_String(1,8);
case 9:Display_String(1,9);
case 10:Display_String(1,10);
case 11:Display_String(1,11);
case 12:Display_String(1,12);
case 13:Display_String(1,13);
case 14:Display_String(1,14);
case 15:Display_String(1,15);
}
}
}
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