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//作用紅外發(fā)射與接收一體萬能遙控解碼
#include"reg52.h"
#define uchar unsigned char
#define uint unsigned int
//定時器寄存器設(shè)置
#define THO_int0 0xfa
#define TLO_int0 0x8d
#define TH1_int1 0xff
#define TL1_int1 177
sbit LED1=P2^1;
sbit LED2=P2^2;
sbit LED3=P2^3;
sbit LED4=P2^0;
sbit Beep=P3^7;
sbit KEY1=P1^4;
sbit KEY2=P1^5;
sbit KEY3=P1^6;
sbit KEY4=P1^7;
sbit infrared = P3^3;
sbit infr_send = P3^4;
sbit tiaoshi = P3^6;
//表格存于ROM*************************************
uchar code dsp_tap[16]={0xa0,0xbb,0x62,0x2a,0x39,0x2c,0x24,0xba,0x20,0x28,0x30,0x25,0xe4,0x23,0x64,0x74};
uchar code dsp_cs[4]={0x70,0xd0,0xb0,0xe0};
//uchar code dat_tap[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
//uchar code dat_tap2[13]={0,31,29,31,30,31,30,31,31,30,31,30,31};
//變量定義存于RAM**********************************
uchar SimpleKeyState = 0; //簡單按鍵的狀態(tài)
uchar SimpleKeyPressDelay = 7; //簡單按鍵按實的大概時間,單位:10毫秒
uchar SimpleKeyCode = 0xFF; //簡單按鍵鍵碼
uchar infr_key1_data[4] = {0};
uint infr_send_cont = 0;
uchar infrared_new_data[4] = {0};
uchar infrared_old_data[4] = {0x80,0xff,0xc8,0x37};
uchar infrared_byte = 0;
uchar infrared_byte_cont = 0;
uchar infrared_old_state = 0;
uchar infrared_new_state = 0;
uint infrared_cont = 0;
uint infrared_cont_now = 0;
uchar flg_infrared = 0;
uchar flg_infrared_ok = 0;
uchar seg_step = 0;
uchar dsp_step;
uchar cont_4ms;
uint cont_1s;
uchar cont_500ms;
uchar cont_10ms;
uchar sec;
uchar beef_delay;
uchar dis_play[4] = {0};
uint dis_num = 0;
uchar flg_display = 0;
uchar flg_change = 0;
uchar flg_send_start = 0;
uchar aaa[8] = {0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
uchar flg_key = 0;
void writ_send(uint tin)
{
uchar j;
uint i;
for(i=0;i<tin;i++)
{
for(j=0;j<4;j++);
infr_send =~ infr_send;
}
infr_send = 1;
}
void delay(uint w)
{
uint i;
for(i = 0;i<w;i++);
}
void infr_send_ctrol(void)
{
uchar cont;
EA=0;
infrared_byte_cont = 0;
infrared_byte = 0;
writ_send(660); //頭碼9ms
delay(748); //4500us 高電平延時
for(cont = 0;cont < 33; cont++)
{
writ_send(38); //560us低電平發(fā)射 42
if(infrared_old_data[infrared_byte] & aaa[infrared_byte_cont])
{
delay(280); //1690us 高電平延時 1 269
infrared_byte_cont++;
}else
{
delay(93); //560us 高電平延時 0 89
infrared_byte_cont++;
}
if(infrared_byte_cont == 8)
{
infrared_byte++;
infrared_byte_cont = 0;
}
}
EA=1;
}
/*============
簡單按鍵處理子函數(shù)
==============*/
void SimpleKeyAction(void)
{
if(SimpleKeyCode == 1)
{
LED1 =~ LED1;
infr_send_ctrol();
}
else if(SimpleKeyCode == 2)
{
LED2 =~ LED2;
// infr_send =~ infr_send;
}
else if(SimpleKeyCode == 3)
{
//LED3 =~ LED3;
}else if(SimpleKeyCode == 4)
{
Beep = 0;
LED4 =~ LED4;
}
}
/*============
簡單按鍵掃描子函數(shù)
==============*/
void SimpleKeyScan(void)
{
P1 =P1|0xf0;
if(SimpleKeyPressDelay > 0) SimpleKeyPressDelay--;
if( (SimpleKeyState == 0) && ((KEY1 ==0) || (KEY2 ==0) || (KEY3 ==0) || (KEY4 ==0)) ) //某個按鈕被按下
{
SimpleKeyState = 1;
SimpleKeyPressDelay = 7; //從接觸按鍵到把按鍵按下所需要的大概時間:70毫秒
}
if(SimpleKeyState == 1)
{
if(SimpleKeyPressDelay == 0) //按鍵按實
{
// Beep = 0;
SimpleKeyState = 2;
if(KEY1 ==0)
{
SimpleKeyCode = 1;
}
else if(KEY2 ==0)
{
SimpleKeyCode = 2;
}
else if(KEY3 ==0)
{
SimpleKeyCode = 3;
}
else if(KEY4 ==0)
{
SimpleKeyCode = 4;
}
SimpleKeyAction();//按鍵處理
}
}
if(SimpleKeyState == 2)
{
if( (KEY1 == 1) && (KEY2 == 1) && (KEY3 == 1) && (KEY4 == 1) ) //所有的按鍵松開
{
SimpleKeyPressDelay = 7; //松開按鍵所需要的大概時間:70毫秒
SimpleKeyState = 3;
}
}
if(SimpleKeyState == 3)
{
if(SimpleKeyPressDelay == 0) //已松開按鍵
{
SimpleKeyState = 0;
SimpleKeyCode = 0xFF;
}
}
}
//******************************************************************
void T0_int(void)
{
//定時器0初始化設(shè)置
TR0 = 1;
TH0=THO_int0;
TL0=TLO_int0;
ET0=1;
EA=1;
}
//*********************************************************************
void MCU_init(void)
{
P1=0xff;
P2=0xff;
P3=0xff;
T0_int();
// Beep = 0;
}
//*******************************************************************
void timer0_(void)interrupt 1 // 定時器溢出周期為100us
{
TR0=0;
TH0=THO_int0;
TL0=TLO_int0;
TR0=1;
// tiaoshi =~ tiaoshi;
if(flg_send_start == 0)
{
//紅外接收代碼
P3=(P3|0x08); //把紅外管腳的電平設(shè)為1
infrared_old_state = infrared_new_state; //保留上一次的電平
infrared_new_state = (P3&0x08); //讀取現(xiàn)在的管腳電平值
if(infrared_new_state == infrared_old_state) infrared_cont++; //如果兩次的電平相同變量infrared_cont 自加1
else if((P3&0x08) == 0x00) //如果兩次的電平不相同且該管腳的電平為低電平
{
infrared_cont_now = infrared_cont; //保留infrared_cont的值
infrared_cont = 0; //變量清零
if(flg_infrared == 1)
{
if((infrared_cont_now >= 6)&&(infrared_cont_now <= 25)) //如果變量值在6到15這個范圍之內(nèi)
{
if(infrared_cont_now <= 14) //小于的話設(shè)置為0
{
infrared_new_data[infrared_byte] = infrared_new_data[infrared_byte]<<1;
infrared_new_data[infrared_byte] = (infrared_new_data[infrared_byte]&0xfe);
infrared_byte_cont++;
}
else //大于的話設(shè)置為1
{
infrared_new_data[infrared_byte] = infrared_new_data[infrared_byte]<<1;
infrared_new_data[infrared_byte] = (infrared_new_data[infrared_byte]|0x01);
infrared_byte_cont++;
}
if(infrared_byte_cont == 8) //當(dāng)存儲玩8位數(shù)據(jù)infrared_new_data[0]之后，再存儲infrared_new_data[1]
{
infrared_byte++;
infrared_byte_cont = 0;
if(infrared_byte == 4) //當(dāng)存儲完32位數(shù)據(jù)之后
{
infrared_byte = 0;
flg_infrared = 0; //標(biāo)志位清零
infrared_old_data[0] = infrared_new_data[0]; //保留數(shù)據(jù)
infrared_old_data[1] = infrared_new_data[1];
infrared_old_data[2] = infrared_new_data[2];
infrared_old_data[3] = infrared_new_data[3];
flg_infrared_ok = 1;
}
}
}else flg_infrared = 0;
}else
{
if((infrared_cont_now >= 80)&&(infrared_cont_now <= 150)) //頭嗎解讀
{
flg_infrared = 1; //標(biāo)志位置1
infrared_byte = 0; //變量清零
infrared_byte_cont = 0;
}else flg_infrared = 0;
}
}
}
cont_4ms++;
if(cont_4ms >= 40)
{
cont_4ms=0;
flg_display = 1;
//蜂鳴器控制****************************
if(Beep == 0)
{
beef_delay++;
if(beef_delay > 10) Beep = 1;
}else beef_delay = 0;
//**************************************
}
cont_1s++;
if(cont_1s>=10000)
{
cont_1s=0;
// dis_num++;
flg_change =~ flg_change;
}
}
void main(void)
{
MCU_init();
tiaoshi = 0;
for(;;)
{
SimpleKeyScan();
if(flg_infrared_ok == 1)
{
flg_infrared_ok = 0;
LED4 =~ LED4;
Beep = 0;
}
if(flg_display)
{
flg_display = 0;
P2 = (P2&0x0f);
if(flg_change)
{
dis_play[3] = dsp_tap[infrared_old_data[2]%256/16];
dis_play[2] = dsp_tap[infrared_old_data[2]%16];
dis_play[1] = dsp_tap[infrared_old_data[3]%256/16];
dis_play[0] = dsp_tap[infrared_old_data[3]%16];
}else
{
dis_play[3] = dsp_tap[infrared_old_data[0]%256/16];
dis_play[2] = dsp_tap[infrared_old_data[0]%16];
dis_play[1] = dsp_tap[infrared_old_data[1]%256/16];
dis_play[0] = dsp_tap[infrared_old_data[1]%16];
}
P0 = dis_play[seg_step];
P2 = (P2|dsp_cs[seg_step]);
seg_step++;
if(seg_step>=4)seg_step = 0;
}
}
}
void EXT0_INT(void) interrupt 0 {;}
void EXT1_INT(void) interrupt 2 {;}
void timer1_(void) interrupt 3 {;}
void serial_(void) interrupt 4 {;}

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