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51單片機(jī)-紅外遙控解碼

作者：時(shí)間：2016-12-02 來源：網(wǎng)絡(luò)

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這段代碼仍然有問題，正在調(diào)試中，路過的大牛希望給與指導(dǎo)：

#include ＜reg52.h＞

#define uint unsigned int

#define uchar unsigned char

uint irtime,startflag,i,bitnum,decodeok,receiveok;

uchar irdata[33],disp[8],vcode[4];

unsigned char code duan[]={ 0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,

0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};

unsigned char code wei[]={ 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07};

void delay(int k){

int i,j;

for(i = 0; i ＜ k; i++)

for(j = 0; j ＜ 0xff; j++)

;

}

void Time0_Init(){

EA = 1;

ET0 = 1;

TH0 = 0x00;

TL0 = 0x00;

TMOD = 0x02;

TR0 = 1;

}

void Int0_Init(){

EA = 1;

IT0 = 1;

EX0 = 1;

}

void Irpro(){

disp[0] = vcode[0] / 16; //把十六進(jìn)制的數(shù)轉(zhuǎn)化成兩位顯示

disp[1] = vcode[0] % 16;

disp[2] = vcode[1] / 16;

disp[3] = vcode[1] % 16;

disp[4] = vcode[2] / 16;

disp[5] = vcode[2] % 16;

disp[6] = vcode[3] / 16;

disp[7] = vcode[3] % 16;

}

void display(){

for(i = 0; i ＜ 8; i++){

P1 = wei[ i];

P2 = duan[disp[ i]];

delay(1);

}

void decode(){

uint k,i,j;

uchar value;

j = 1;

for(k = 0; k ＜ 4; k++){

value = 0;

for(i = 0; i ＜ 8; i++){

if(irdata[j]＞6) //如果大于6個(gè)irtime是高電平

value |= 0x01 ＜＜ i; j++;

}

vcode[k] = value;

}

decodeok = 1;

}

void main(){

Time0_Init(); //對定時(shí)器中斷進(jìn)行初始化

Int0_Init(); //對下降沿中斷進(jìn)行初始化

while(1){

if(receiveok == 1){ //如果接受成功進(jìn)行解碼

receiveok = 0;

decode();

}

if(decodeok == 1){ //如果解碼成功，轉(zhuǎn)換一下格式準(zhǔn)備顯示

decodeok = 0;

Irpro();

}

display();

}

void time0() interrupt 1{ //由于是模式2，8位自動(dòng)重裝，所以一個(gè)irtime為256us

irtime++;

}

void int0() interrupt 0{

if(startflag){

if(irtime ＞ 32){ //如果是引導(dǎo)信息，則bitnum清零

bitnum = 0;

}

irdata[bitnum] = irtime; //裝載數(shù)據(jù)，包括1位引導(dǎo)位，16位用戶碼，8位數(shù)據(jù)碼和8位數(shù)據(jù)碼反碼

irtime = 0;

bitnum++;

if(bitnum == 33){ //裝載數(shù)據(jù)完成

bitnum = 0;

receiveok = 1;

}

else{

startflag = 1; //遇到第一個(gè)下降沿讓irtime為0，遇到第二個(gè)時(shí)計(jì)算用了多少個(gè)irtime

irtime = 0;

}

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