学习红外线遥控好几天,看了很多教程,感觉还是一头雾水,最后自己估摸着写了一个最小发射程序,不出意外,没有任何动静,请大家帮忙看一下,这个程序错在哪儿,如果错的实在太多,能不能麻烦帮忙写一个这样的小程序,让我学习一下,谢谢!(不要写大的遥控器程序,我的智商,根本看不懂)
单片机源程序如下:
#include <stc52.h>
#include <intrins.h>
#define u8 unsigned char
#define u16 unsigned int
sbit plflag=P1^0; //定义红外发射口
sbit key=P1^1; //定义一个发射开关
void time_init(); //定时器初始化,
void s0(); //发射一位0,
void s1(); //发射一位1,
void main()
{
plflag=0; //P1.0口先置0,
time_init();
while(1)
{
if(key==0)
{
TL1 = 0x9A; //定时器1延时9毫秒设定,
TH1 = 0xDF; //
TR0 = 1; //打开定时器0,
TR1 = 1; //打开定时器1,
while(!TF1); //等待9毫秒
TR0 = 0; //关闭定时器0
TR1 = 0; //关闭定时器1,
plflag=0; //P1.0口归0,
TL1 = 0xCD; //定时器一延时4.5毫秒,
TH1 = 0xEF; //
TF1 = 0; //清空定时器1标志位,
TR1 = 1; //打开定时器1,
while(!TF1); //等待4.5毫秒,
TR1 = 0; //关闭定时器1,
s0();s0();s0();s0();s0();s0();s0();s0(); //测试写三个字节,0x00,0xff,0xff
s1();s1();s1();s1();s1();s1();s1();s1();
s1();s1();s1();s1();s1();s1();s1();s1();
}
}
}
void s0() //写一位0的函数,
{
TL1 = 0xFC; //定时560微秒设置,
TH1 = 0xFD;
TF1 = 0;
TR0 = 1;
TR1 = 1;
while(!TF1);
TR0 = 0;
TR1 = 0;
plflag=0;
TL1 = 0xFC;
TH1 = 0xFD;
TF1 = 0;
TR1 = 1;
while(!TF1);
TR1 = 0;
}
void s1() //写一位1的函数,
{
TL1 = 0xFC; //定时560微秒设置,
TH1 = 0xFD;
TF1 = 0;
TR0 = 1;
TR1 = 1;
while(!TF1);
TR0 = 0;
TR1 = 0;
plflag=0;
TL1 = 0xEF; //定时器1.685毫秒设置,
TH1 = 0xF9;
TF1 = 0;
TR1 = 1;
while(!TF1);
TR1 = 0;
}
void time_init() 定时器初始化函数,定时器零产生38khz
{
TMOD = 0x11; //定时器0定时器1,设置为工作模式1,
TL0 = 0xF4; //
TH0 = 0xFF;
TF0 = 0;
TF1 = 0;
ET0 = 1;
EA = 1;
}
void Timer0() interrupt 1 //定时器0中断服务函数
{
TL0 = 0xf4;
TH0 = 0xFF;
plflag=~plflag;
}
|