PIC16F97+eV1527解码源程序.doc

PIC16F97+eV1527解码源程序滚动码 2009-02-19 22:53:14 阅读124 评论0 字号：大中小订阅 /使用PIC16F917的片子,使用T0中断查询方式接收遥控命令/*#include ;void main(void);void interrupt ISR(void);void sub_cpu_ini(void);/*unsigned char hh_w,ll_w; /高,低电平宽度unsigned char ma_x; /接收到第几位编码了unsigned char bma1,bma2,bma3,bma4; /用于接收过程存放遥控编码unsigned char mma1,mma2,mma3,mma4; /用于解码过程 bit rf_ok; /接收到一个完整的遥控命令后置1,通知解码程序可以解码了 bit old_rc5; /保存上一次查询到的电平状态 bit tb_ok; /接收到同步的马时置1void main() sub_cpu_ini(); /*/- 中断服务程序 -/*void interrupt ISR(void) /只启用了T0中断，所以不用判断中断源 T0IF=0; / 清除T0中断标志 #asm clrwdt /喂狗 #endasm TMR0=125; /将T0中断时间修正为150uS RC3=!RC3; /连接逻辑分析仪,查看T0中断时间间隔 if (!RC5) ll_w+;old_rc5=0; / 检测到低电平 低电平时间加1,记录本次电平状态 else / 检测到高电平 hh_w+; if (!old_rc5) / 检测到从低到高的跳变,已检测到一个完整(高-低)电平周期 if (hh_w=2)&(hh_w=60)&(ll_w=6)&(ll_w=2)&(ll_w=3) switch (ma_x) case 0 : bma1=bma1 | 0B10000000; break; /遥控编码第1位 case 1 : bma1=bma1 | 0B01000000; break; case 2 : bma1=bma1 | 0B00100000; break; case 3 : bma1=bma1 | 0B00010000; break; case 4 : bma1=bma1 | 0B00001000; break; case 5 : bma1=bma1 | 0B00000100; break; case 6 : bma1=bma1 | 0B00000010; break; case 7 : bma1=bma1 | 0B00000001; break; case 8 : bma2=bma2 | 0B10000000; break; case 9 : bma2=bma2 | 0B01000000; break; case 10: bma2=bma2 | 0B00100000; break; case 11: bma2=bma2 | 0B00010000; break; case 12: bma2=bma2 | 0B00001000; break; case 13: bma2=bma2 | 0B00000100; break; case 14: bma2=bma2 | 0B00000010; break; case 15: bma2=bma2 | 0B00000001; break; case 16: bma3=bma3 | 0B10000000; break; case 17: bma3=bma3 | 0B01000000; break; case 18: bma3=bma3 | 0B00100000; break; case 19: bma3=bma3 | 0B00010000; break; case 20: bma4=bma4 | 0B10000000; break; /按键状态第1位 case 21: bma4=bma4 | 0B01000000; break; case 22: bma4=bma4 | 0B00100000; break; case 23: bma4=bma4 | 0B00010000; mma1=bma1;mma2=bma2;mma3=bma3;mma4=bma4;/将接收到的编码复制到解码寄存器中/在下一行设一个断点，用ICD2调试 rf_ok=1; / 通知解码子程序可以解码了 break; ma_x+; else ma_x=0; tb_ok=0; bma1=0; bma2=0; bma3=0; bma4=0; /接收到不符合的高-低电平序列 ll_w=0;hh_w=1; old_rc5=1; / 记录本次电平状态 /*/- 上电初始化程序 -/*void sub_cpu_ini() PORTA =0B11110000; PORTB=0B11011100; PORTC=0B00111011; PORTE=0B11111111; TRISA =0B11110000; TRISB=0B11111111; TRISC=0B00110011; TRISE=0B11111111; WPUB =0B11011101; OSCCON =0B01100111; /使用片内振荡频率 4MHZ ANSEL =0B00000000; /模拟输入管脚配置为通用I/O口 CMCON0 =0B00000111; /关闭模拟比较器 OPTION =0B00001111; /对T0初始化,WDT预分频128 LCDCON =0B00000011; /VLCD引脚禁止(RC0,RC1,RC2) T2CON =0B00000011; /设置T2为4096uS中断一次,作为一次处理循环 TMR1ON=