用51单片机红外遥控舵机，用到外部中断0、定时器0、定时器1；定时器0用来红外解码，定时器1用来产生舵机的PWM，两个部分都会了，但是最后一步的使用红外遥控舵机在同一个程序里没反应，我想是定时器之间是不是有什么问题，有懂得吗？代码如下：
- #include <reg51.h>
- #define uchar unsigned char
- #define uint unsigned int
- uchar code table[]={ //段选数组定义
- 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
- 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
- uchar code aable[]={ //位选数组定义
- 0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
- uchar irtimer;
- uchar irdata[33]; //接收红外发送的数据
- uchar bitnum;
- uchar ircode[4];
- uchar disp[8];
- uchar duoji_timer;
- uchar state = 0;
- sbit PWM1 = P2^0;
- sbit K1=P2^7;
- sbit K2=P2^6;
- sbit K3=P2^5;
- bit IRstart_Flag; //红外发送标志位
- bit IR_rec_ok_Flag; //接收红外发送的数据完毕标志位
- bit IR_code_ok_Flag; //数据解码完成标志位
- void delay(uint t)
- {
- uchar i,j;
- for(i=t;i>0;i--)
- for(j=110;j>0;j--);
- }
- void INT0_Init() //外部中断0初始化
- {
- IT0 = 1; //下降沿触发外部中断0
- EX0 = 1; //打开外部中断0
- EA = 1; //打开总中断
- }
- void Timer0_Init() //定时器0初始化
- {
- TMOD |= 0x02;
- TH0 = 0x00;
- TL0 = 0x00;
- ET0 = 1;
- EA = 1;
- TR0 = 1;
- }
- void Timer1_Init()
- {
- TMOD = 0x10;
- TH1 = 0xff;
- TL1 = 0x1a; //0.25ms
- ET1 = 0;
- TR1 = 1;
- }
- void irdata_pros() //红外数据判断处理函数，逻辑“0” OR 逻辑“1”
- {
- uchar i,j,n;
- uchar value;
- n = 1;
- for(j=0;j<4;j++)
- {
- for(i=0;i<8;i++)
- {
- value = value >>1;
- if(irdata[n] > 6) //判断是逻辑“0” OR 逻辑“1”，根据两者间的中间值6来判断
- {
- value |= 0x80;
- }
- n++;
- }
- ircode[j] = value;
- }
- IR_code_ok_Flag = 1;
- }
- void ir_work()
- {
- disp[0] = ircode[0]/16; //用户码
- disp[1] = ircode[0]%16;
- disp[2] = ircode[1]/16; //用户反码
- disp[3] = ircode[1]%16;
- disp[4] = ircode[2]/16; //数据码
- disp[5] = ircode[2]%16;
- disp[6] = ircode[3]/16; //数据反码
- disp[7] = ircode[3]%16;
- }
- void display()
- {
- uchar i;
- for(i=0;i<8;i++)
- {
- P1=table[disp]; //段选
- P0=aable; //位选
- delay(10);
- }
- }
- void turn()
- {
- if(K1==0)
- {
- delay(20);
- state = -1;
- }
- if(K2==0)
- {
- delay(20);
- state = 0;
- }
- if(K3==0)
- {
- delay(20);
- state = 1;
- }
-
- switch(state)
- {
- case -1 :
- {
- if(duoji_timer <= 1)
- {
- PWM1 = 1;
- }
- else
- {
- PWM1 = 0;
- }
- break;
- }
- case 0 :
- {
- if(duoji_timer <= 5)
- {
- PWM1 = 1;
- }
- else
- {
- PWM1 = 0;
- }
- break;
- }
- case 1 :
- {
- if(duoji_timer <= 9)
- {
- PWM1 = 1;
- }
- else
- {
- PWM1 = 0;
- }
- break;
- }
- }
- }
- void main()
- {
- if(K1)
- {
- INT0_Init();
- Timer0_Init();
- while(1)
- {
-
- if(IR_rec_ok_Flag == 1)
- {
- irdata_pros();
- IR_rec_ok_Flag = 0;
- }
- if(IR_code_ok_Flag == 1)
- {
- ir_work();
- IR_code_ok_Flag = 0;
- }
- display();
- break;
- }
- }
- else
- {
- Timer1_Init();
- while(1)
- {
- turn();
- break;
- }
- }
- }
- void INT0_ISP() interrupt 0 //外部中断0服务函数
- {
- if(IRstart_Flag) //红外遥控开始发送
- {
- if(irtimer > 30) // 9ms/277.8us = 32 开头的引导码
- {
- bitnum = 0;
- }
- irdata[bitnum] = irtimer;//接收红外发送的数据
- irtimer = 0;
- bitnum++;
- if(bitnum==33) //接收红外发送的数据完毕
- {
- bitnum = 0;
- IR_rec_ok_Flag = 1;
- IRstart_Flag = 0;
- }
-
- }
- else
- {
- IRstart_Flag = 1;
- irtimer = 0;
- }
- }
- void Timer0_ISP()interrupt 1
- {
- irtimer++; //每隔（256*12/11.0592）加一 277.8us
- }
- void Timer1_ISP() interrupt 3 //定时器1服务函数
- {
- TH1 = 0xff;
- TL1 = 0x1A; //0.25ms
- duoji_timer++;
- if(duoji_timer == 80) //20ms
- {
- duoji_timer = 0;
- }
- }
复制代码
此帖出自
小平头技术问答
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.xiaopingtou.cn/data/attach/logo/logo.png', '推荐 啦啦啦啦一二三 的问题《红外控制舵机使用外部中断0、定时器0、定时器1》','https://www.xiaopingtou.net/q-10806.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
#include <intrins.h>
sbit IR = P3^2;
sbit BEEP = P3^6;
sbit PWM_OUT = P0^0;
bit inf_flag = 1; //ºìÍâ½ÓÊյĿªÆô¹Ø±Õ¿ØÖÆ룬ÔÚºìÍâ½âÂë¹ý³ÌÖÐÒª¹Ø±ÕºìÍâ½ÓÊÕ
bit ecode_ok; //½âÂë³É¹¦±ê־λ
unsigned char ircode[4];
unsigned int LowTime,HighTime; //ºìÍâ½ÓÊÕ¹ý³ÌÖб£´æ¸ß¡¢µÍµçƽµÄ¿í¶È
unsigned char se_PWM =15; //³õʼ»¯¶æ»úµÄPWM£¨¸ßµçƽʱ¼ä£©
unsigned char key_stime_counter; //¼Ç¼×ܵÄÖжϴÎÊý£¬³¬¹ý200(20ms)´Î¾Í»Ø0
void delay1ms()
{
unsigned char i,j;
for(i=0;i<10;i++)
for(j=0;j<33;j++);
}
void delay(unsigned char n)
{
unsigned char i;
for(i=0;i<n;i++)
delay1ms();
}
void beep()
{
unsigned char i;
for(i=0;i<100;i++)
{
delay1ms();
BEEP = !BEEP; //beepÈ¡·´
}
BEEP = 1 ;//¹Ø±Õ·äÃùÆ÷
delay(250); //ÑÓʱ
}
void DeCode()
{
unsigned char i,j;
unsigned char temp; //´¢´æ½âÂë³öµÄÊý¾Ý
for(i=0;i<4;i++) //Á¬Ðø¶ÁÈ¡4¸öÓû§ÂëÓëÊý¾ÝÂë
{
for(j=0;j<8;j--) //ÿ¸öÂëÓÐ8λÊý¾Ý
{
temp = temp>>1; //¸÷Êý¾ÝλÓÒÒÆһ룬ÒòΪÏȶÁ³öµÄÊǸßλÊý¾Ý
TH0 = 0;
TL0 = 0; //¶¨Ê±Æ÷0ÇåÁã
TR0 = 1; //´ò¿ª¶¨Ê±Æ÷0
while(IR == 0)
{
;
} //Èç¹ûÊǵ͵çƽ¾ÍµÈ´ý£¬¸øÒýµ¼ÂëµÍµçƽ¼Æʱ
TR0 = 0;//¹Ø±Õ¶¨Ê±Æ÷0
LowTime = TH0*256 + TL0; //±£´æµÍµçƽʱ¼ä
TH0 = 0;
TL0 = 0; //¶¨Ê±Æ÷0ÇåÁã
TR0 = 1; //´ò¿ª¶¨Ê±Æ÷0
while(IR == 1)
{
;
} //Èç¹ûÊǸߵçƽ¾ÍµÈ´ý
TR0 = 0;
HighTime = TH0*256 + TL0; //±£´æ¸ßµçƽʱ¼ä
if((LowTime < 370)||(LowTime >640))
{
ecode_ok = 0; //Èç¹ûµÍµçƽ³¤¶È²»ÔÚºÏÀí·¶Î§£¬ÔòÈÏΪ³ö´í£¬Í£Ö¹½âÂë
}
if((HighTime > 420) && (HighTime < 620))
//Èç¹û¸ßµçƽʱ¼äÔÚ560us×óÓÒ£¬560us / 1.085us = 516 ´Î
{
temp = temp&0x7f; //(520 - 100 =420 , 520 + 100 = 620),Ϊ0
}
if((HighTime >1300) && (HighTime < 1800))
//Èç¹û¸ßµçƽʱ¼äÔÚ1680us×óÓÒ£¬¼ÆÊý 1680 / 1.085 = 1548´Î
{
temp |= 0x80; //(1550-250 = 1300 £¬ 1500+250 = 1800)£¬Îª1
}
ircode[i] = temp;
}
if(ircode[2] = ~ircode[3]) //ÑéÖ¤Êý¾ÝÊÇ·ñÏàµÈ
{
//Èç¹û½âÂëÕýÈ·¾Í½øÈë¶Ô¶æ»úµÄ²Ù×÷
if(ircode[2] == 0x44) //×óת
{
se_PWM -= 5;
if(se_PWM <= 10)
se_PWM = 10;
}
else if(ircode[2] == 0x43)//ÓÒת
{
se_PWM+=5;
if(se_PWM >=15)
se_PWM = 15;
}
ecode_ok = 1; //½âÂëÕýÈ·£¬·µ»Ø1
}
}
}
void inf()//ºìÍâ½ÓÊÕ
{
if(inf_flag & IR == 0)
{
inf_flag = 0; //¹Ø±ÕºìÍâ¼ì²â
TH0 = 0;
TL0 = 0; //¶¨Ê±Æ÷0ÇåÁã
TR0 = 1; //´ò¿ª¶¨Ê±Æ÷0
while(IR == 0)
{
;
} //Èç¹ûÊǵ͵çƽ¾ÍµÈ´ý£¬¸øÒýµ¼ÂëµÍµçƽ¼Æʱ
TR0 = 0;//¹Ø±Õ¶¨Ê±Æ÷0
LowTime = TH0*256 + TL0; //±£´æµÍµçƽʱ¼ä
TH0 = 0;
TL0 = 0; //¶¨Ê±Æ÷0ÇåÁã
TR0 = 1; //´ò¿ª¶¨Ê±Æ÷0
while(IR == 1)
{
;
} //Èç¹ûÊǸߵçƽ¾ÍµÈ´ý
TR0 = 0;
HighTime = TH0*256 + TL0; //±£´æ¸ßµçƽʱ¼ä
if((LowTime > 7800) && (LowTime < 8800) && (HighTime > 3600) && (HighTime > 4700))
//Èç¹ûÊÇÒýµ¼Â룬¾Í¿ªÊ¼½âÂ룬·ñÔò·ÅÆú£¬Òýµ¼ÂëµÄµÍµçƽ¼Æʱ
//µÍµçƽ´ÎÊý = 9000us /(12/11.0592) = 8294 ,ÅжÏÇø¼ä£º8300-500 = 7800£¬ 8300+500 = 8800
{
DeCode();
if(ecode_ok == 1) //Ö´ÐÐÒ£¿Ø½âÂ빦ÄÜ
{
beep();//·äÃùÆ÷ÏìÒ»Éù£¬Ìáʾ½âÂë³É¹¦
}
}
inf_flag = 1; //¿ªÆôºìÍâ¼ì²â
}
}
void main()
{
EA = 1; //´ò¿ª×ÜÖжÏ
EX0 = 1; //´ò¿ªÍⲿÖжÏ0
//ET0 = 1; //¶¨Ê±Æ÷0ÖжÏÔÊÐí
IT0 = 1; //ÍⲿÖжÏ0ϽµÑØ´¥·¢
TMOD = 0x11;//ʹÓö¨Ê±Æ÷0·½Ê½1
TR0 = 0; //¶¨Ê±Æ÷0¹Ø±Õ
PWM_OUT = 0; //³õʼ»¯¶æ»ú
ET1 = 1; //¶¨Ê±Æ÷1ÖжÏÔÊÐí
TH1 = 0xFF;
TL1 = 0xA4;
TR1 = 1; //Æô¶¯¶¨Ê±Æ÷1
while(1) //µÈ´ýºìÍâÐźŲúÉúµÄÖжÏ
{
inf();
}
}
//¶¨Ê±Æ÷1ÖжϷþÎñº¯Êý
//Ö÷Òª¸ºÔð²úÉú¶æ»úËùÐèµÄPWM²¨
void timer1()interrupt 3 using 0
{
TH1 = 0xFF;
TL1 = 0xA4; //¶¨Ê±Æ÷1ÖØÐÂ×°ÈëÊýÖµ0.1ms
if(++key_stime_counter >= 200) //20msʱ¼äµ½
{
key_stime_counter = 0;
}
if(key_stime_counter <=se_PWM)//Éú³ÉPWM²¨£¬¿ØÖƶæ»úתÏò
{
PWM_OUT = 1;
}
else
{
PWM_OUT = 0;
}
}
一周热门 更多>