void tim(void) interrupt 1 using 1//中断，用于数码管扫描
{
static unsigned char i,num;
TH0=0xf5;
TL0=0xe0;
P0=table[l_tmpdisplay[i]];//查表法得到要显示数字的数码段
P2=table1[i];
i++;
if(i==8)
{
i=0;
num++;
if(10==num) //隔段时间读取1302的数据。时间间隔可以调整
{
ReadRTC_Flag=1; //使用标志位判断
num=0;
}
}
}
5.4*4矩阵键盘
//行列扫描程序，可以自己定义端口和扫描方式，这里做简单介绍
#include //包含头文件
#define uchar unsigned char
#define uint unsigned int
unsigned char const dofly[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,
0x77,0x7c,0x39,0x5e,0x79,0x71};//0-F
uchar keyscan(void);
void delay(uint i);
void main()
{
uchar key;
P2=0x00;//1数码管亮 按相应的按键，会显示按键上的字符
while(1)
{
key=keyscan();//调用键盘扫描，
switch(key)
{
case 0x7e:P0=dofly[0];break;//0 按下相应的键显示相对应的码值
case 0x7d:P0=dofly[1];break;//1
case 0x7b:P0=dofly[2];break;//2
case 0x77:P0=dofly[3];break;//3
case 0xbe:P0=dofly[4];break;//4
case 0xbd:P0=dofly[5];break;//5
case 0xbb:P0=dofly[6];break;//6
case 0xb7:P0=dofly[7];break;//7
case 0xde:P0=dofly[8];break;//8
case 0xdd:P0=dofly[9];break;//9
case 0xdb:P0=dofly[10];break;//a
case 0xd7:P0=dofly[11];break;//b
case 0xee:P0=dofly[12];break;//c
case 0xed:P0=dofly[13];break;//d
case 0xeb:P0=dofly[14];break;//e
case 0xe7:P0=dofly[15];break;//f
}
}
}
uchar keyscan(void)//键盘扫描函数，使用行列反转扫描法
{
uchar cord_h,cord_l;//行列值
P3=0x0f; //行线输出全为0
cord_h=P3&0x0f; //读入列线值
if(cord_h!=0x0f) //先检测有无按键按下
{
delay(100); //去抖
if(cord_h!=0x0f)
{
cord_h=P3&0x0f; //读入列线值
P3=cord_h|0xf0; //输出当前列线值
cord_l=P3&0xf0; //读入行线值
return(cord_h+cord_l);//键盘最后组合码值
}
}return(0xff); //返回该值
}
void delay(uint i)//延时函数
{
while(i--);
}
6.红外解码LCD显示
//该程序使用LCD1602显示
#include
#include
#include
////////////////////////////////////////////////
#define TURE 1
#define FALSE 0
////////////////////////////////////////////////
sbit IR=P3^2;//红外接口标志
sbit RS = P2^4;//Pin4
sbit RW = P2^5; //Pin5
sbit E = P2^6;//Pin6
#define Data P0 //数据端口
unsigned int hour,minute,second,count;
char code Tab[16]="0123456789ABCDEF";
char data TimeNum[]=" ";
char data Test1[]=" ";
////////////////////////////////////////////
unsigned char irtime;//红外用全局变量
bit irpro_ok,irok;
unsigned char IRcord[4];
unsigned char irdata[33];
void ShowString (unsigned char line,char *ptr);
//////////////////////////////////////////////
void Delay(unsigned char mS);
void Ir_work(void);
void Ircordpro(void);
////////////////////////////////////////////////////////////////
void Delay(unsigned char mS)//delay mS
{
unsigned char us,usn;
while(mS!=0)
{
usn = 4;
while(usn!=0)
{
us=0xf0;
while (us!=0) {us--;};
usn--;
}
mS--;
}
}
//////////////////////////////////////////////////////////////////
/
void Ir_work(void)//红外键值散转程序
{
TimeNum[5] = Tab[IRcord[0]/16];
TimeNum[6] = Tab[IRcord[0]%16];
TimeNum[8] = Tab[IRcord[1]/16];
TimeNum[9] = Tab[IRcord[1]%16];
TimeNum[11] = Tab[IRcord[2]/16];
TimeNum[12] = Tab[IRcord[2]%16];
TimeNum[14] = Tab[IRcord[3]/16];
TimeNum[15] = Tab[IRcord[3]%16];
ShowString(1,TimeNum);
irpro_ok=0;
}
void Ircordpro(void)//红外码值处理函数
{
unsigned char i, j, k;
unsigned char cord,value;
k=1;
for(i=0;i<4;i++)//处理4个字节
{
for(j=1;j<=8;j++) //处理1个字节8位
{
cord=irdata[k];
if(cord>7)//大于某值为1
{
value=value|0x80;
}
else
{
value=value;
}
if(j<8)
{
value=value>>1;
}
k++;
}
IRcord[i]=value;
value=0;
} irpro_ok=1;//处理完毕标志位置1
}
void DelayUs(unsigned char us)//delay us
{
unsigned char uscnt;
uscnt=us>>1;
while(--uscnt);
}
void DelayMs(unsigned char ms)//delay Ms
{
while(--ms)
{
DelayUs(250);
DelayUs(250);
DelayUs(250);
DelayUs(250);
}
}
void WriteCommand(unsigned char c)
{
DelayMs(5);//short delay before operation
E=0;
RS=0;
RW=0;
_nop_();
E=1;
Data=c;
E=0;
}
void WriteData(unsigned char c)
{
DelayMs(5); //short delay before operation
E=0;
RS=1;
RW=0;
_nop_();
E=1;
Data=c;
E=0;
RS=0;
}
void ShowChar(unsigned char pos,unsigned char c)
{
unsigned char p;
if (pos>=0x10)
p=pos+0xb0; //是第二行则命令代码高4位为0xc
else
p=pos+0x80; //是第二行则命令代码高4位为0x8
WriteCommand (p);//write command
WriteData (c); //write data
}
void ShowString (unsigned char line,char *ptr)
{
unsigned char l,i;
l=line<4;
for (i=0;i<16;i++)
ShowChar (l++,*(ptr+i));//循环显示16个字符
}
void InitLcd()
{
DelayMs(15);
WriteCommand(0x38); //display mode
WriteCommand(0x38); //display mode
WriteCommand(0x38); //display mode
WriteCommand(0x06); //显示光标移动位置
WriteCommand(0x0c); //显示开及光标设置
WriteCommand(0x01); //显示清屏
