PT2262解码程序

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1、PT2262解码程序#include #include void delay_ms(void)                         //毫秒延时  {         unsigned int i;     for (i=0;i<140;i++)           {          } }void delay_nms(unsigned int n)              //延时周期 {     unsigned int i;     for (i=0;i

2、     {           delay_ms();          } } void spaz(void)                             //响蜂鸣器 {     PORTC

3、=(1<<5);                                  delay_nms(50);                                  PORTC&=~(1<<5);                           }    unsigned long decode(void)    

4、             //无线解码 {     unsigned long DATA;                    //记录数据     unsigned char count,i;                 //暂时计数         /*一共接收三字节*/                 DATA=0;                                //       for (count=0;count<24;count++)         //开始收集          {          

5、 /*测量高电平宽度*/               i=0;                                 //宽度计数           while (PINC&(1<<4))           //高位计数            {                        asm("nop");           //                 i++;                  //计数增加                                                 

6、        if (i>192) goto end;  //限时解码                }                                                   /*分辨出电平高低*/                                 DATA*=2;                       //数据左移                       if (i<64)                             //分辨高低            {       

7、         if (!((56>i)&(i>24))) goto end;     //电平合法                                            DATA+=0;                            //记低电平           }                     else           {                 if (!((168>i)&(i>72))) goto end;    //电平合法                           

8、                 DATA+=1;                            //记高电平           }           /*测量低电平宽度*/                      while (!(PINC&(1<<4)))               //低位计数            {                        asm("nop");                 //                 i++;                        //

9、计数增加                                                         if (i>224) goto end;        //限时解码