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#include<reg51.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
#define Nop() {_nop_(); _nop_(); _nop_(); _nop_(); _nop_();}
volatile ulong IRcode=0x00000000; //32位的鍵代碼
volatile ulong Irdcode=0x00000000;
volatile uint customcode=0x0000; //16位用戶碼
volatile uint time_us=0x0000; //兩個(gè)下降沿之間的時(shí)間
volatile uchar timeH,timeL; //保存TH1 TL的值
uchar Lcustomcode; //低8用戶碼
uchar Hcustomcode; //高8
uchar datacode; //8位鍵數(shù)據(jù)碼
uchar mycode;
uchar Rdatacode; //8位鍵數(shù)據(jù)反碼
uchar uc1ms;
uchar uc10ms;
uchar uc3ms;
uchar ucDispTime;
uchar ucDispOrder;
uchar ucDispCon;
uchar ucSpeakerTime;
unsigned char code LedData[16] = { 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
unsigned char code LedCon[2] = {0x8f,0x4f};
unsigned char ucDispData[2]; // 存放顯示數(shù)據(jù)
sbit led1 = P2^7;
sbit led2 = P2^6;
sbit power=P1^4; //電源開(kāi)關(guān)
sbit BEEP= P3^6;
bit NewIRcode=0; //指示當(dāng)處理完了32位碼后，就有了新的遙控碼
bit DataRight=0; //為1時(shí)讀取數(shù)據(jù)正確
bit bSampleOk;
bit bSampling;
bit b10msInt;
bit b1msInt;
bit bKeySound;
bit b1msMain;
bit IR_E; //表示有新的遙控鍵控下就更新掃描數(shù)據(jù)
bit b3msint;
void SendDataToDispDevice();
void Ir_process();
void display();
void beeping();
/****** 晶振為12 MHZ*******/
/**定時(shí)器1,12 MHZ最大定時(shí)為65.53ms***/
//------------------------------------------------------------------------------
void init()
{
IP=0x09; //定時(shí)器1，外部中斷0優(yōu)先級(jí)高
TMOD=0x11; //定時(shí)器0，工作方式1 ; 定時(shí)器1，工作方式1
TCON=0x01; //外中斷0下降沿觸發(fā)，（包括TR1=0，TR0=0）
TH0=0xff; //初始化定時(shí)器0,定時(shí)0.2ms
TL0=0x47;
TH1=0x00; //初始化定時(shí)器1
TL1=0x00;
EA=1; //開(kāi)全中斷
ET0=1; //開(kāi)放T0中斷
ET1=1; //開(kāi)放T1中斷
EX0=1; //開(kāi)放INT0
TR1=0;
TR0=1;
}
//--------------------------------------
void TimeProg(void)
{
b1msMain = b1msInt;
b1msMain=0;
b10msInt = 0;
if(b1msInt == 1)
{
b1msMain=1;
if(++uc10ms == 10)
{
uc10ms = 0;
b10msInt = 1;
if(bKeySound==1)
{ beeping();
bKeySound=0;
}
}
}
}//void TimeProg(void)
//-------------------------------------interrupt0-------------------------------------
void IR_ISR() interrupt 0 using 1 //遙控器中斷處理函數(shù)
{
static uchar cn;
TR1=0;
timeH=TH1;
timeL=TL1;
TH1=0;
TL1=0;
TR1=1; //開(kāi)定時(shí)器中斷1
time_us=(unsigned int)timeH;
time_us=time_us<<8;
time_us=time_us|timeL;
if(time_us>12200&&time_us<13000) {cn=1;IRcode=0;} //遇到引導(dǎo)碼,就把cn清0，IRcode清0
//引導(dǎo)碼的時(shí)間長(zhǎng)度為9ms+4.5ms
if(cn<34)
{
if(time_us>950&&time_us<1120) //0
{
IRcode=IRcode|0x00000000;
if(cn<33) IRcode=IRcode>>1;
}
else if(time_us>1920&&time_us<2120) //1t > 1950 && t < 2150
{
IRcode=IRcode|0x80000000;
if(cn<33) IRcode=IRcode>>1;
}
//else if(time_us>10000&&time_us<11000) {Irdcode=IRcode;cn=34; } //遇到重復(fù)碼
//cn用于記錄接收到的數(shù)據(jù)位
}
cn++;
if(cn==34)
{ NewIRcode=1;
TR1=0;
Irdcode= IRcode; cn=0;
} //讀完32位碼，則有新碼產(chǎn)生
}
//--------------------------------------timer_ISR------------------------------
void Timer0_ISR() interrupt 1 using 2 //定時(shí)器0中斷函數(shù)
{
TR0=0;
TH0=0xff; //初始化定時(shí)器0,定時(shí)0.2ms 晶振為11.0592 MHZ
TL0=0x47;
TR0=1;
if(++uc1ms == 5)
{
uc1ms = 0;
b1msInt=1;
if(++uc3ms==8)
{
uc3ms=0;
b3msint=1;
SendDataToDispDevice(); //n* ms送一次顯示
}
}
}//void Timer0IntProg() interrupt 1 using 1
void Timer1_ISR() interrupt 3 using 3 //定時(shí)器1中斷函數(shù)
{
TR1=0;
TH1=0x00; //初始化定時(shí)器1
TL1=0x00;
TR1=1;
}
//--------------------SendDataToDispDevice----------
void SendDataToDispDevice()
{
unsigned char n;
//watchdog();
if(++ucDispOrder >= 2) ucDispOrder = 0; // 下一顯示巡回
// 下面為發(fā)送控制數(shù)據(jù) 位控
if(ucDispOrder==0)
{led1=0;
led2=1;
Nop();
Nop();
}
if(b3msint==1)
{if(ucDispOrder==1)
{led2=0;
led1=1;
Nop();
Nop();
}
}
// 下面為發(fā)送顯示數(shù)據(jù)
n = LedData[ucDispData[ucDispOrder]];
P0=n;
} //void SendDataToDispDevice()
//------------------------------------main()----------------------------------------------
void main()
{
init();
beeping();
while(1)
{
TimeProg();
Ir_process();
display();
}
}
void Ir_process()
{
if(NewIRcode==1) //如果有新的遙控碼就讀
{
NewIRcode=0; //讀完之后清零，表示新碼已讀
customcode=(Irdcode>>16); //取紅外碼中的按碼鍵
//取低8位用戶碼
Lcustomcode=customcode>>8;//取低8位按碼鍵
datacode=(unsigned char)(customcode&0x00ff); //取高8位按碼鍵
Rdatacode=Lcustomcode; //取低8位按碼鍵的反碼
if(~Rdatacode!=datacode)
{ DataRight=0;
Irdcode=0;
datacode=Rdatacode=0;
} //校驗(yàn)用戶碼，反碼
else
{ DataRight=1;
IR_E=1;
mycode=datacode;}
if(DataRight==1) { bKeySound = 1;DataRight=0; }
}
}
void display()
{
/* unsigned char a[2];
a[0] = mycode & 0x0f;
mycode = mycode >> 4;
a[1] = mycode & 0x0f;
ET0 = 0;
ucDispData[0] = a[0];
ucDispData[1] = a[1];
ET0 = 1;*/
if(IR_E==1)
{
ET0 = 0;
ucDispData[0] = mycode & 0x0f;
mycode = mycode >> 4;
ucDispData[1] = mycode & 0x0f;
IR_E=0;
ET0 = 1;
}
}
/**********************************************************/
void delay(unsigned char x) //x*0.14MS
{
unsigned char a;
while(x--)
{
for (a = 0; a<13; a++) {;}
}
}
/**********************************************************/
void beeping()
{
unsigned char i;
for (i=0;i<100;i++)
{
delay(4);
BEEP=!BEEP; //BEEP取反
}
BEEP=1;
//關(guān)閉蜂鳴器
}
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