hongwaixian.rar_hongwaixian_红外_红外 检测

#include "89c2051.h" #define NOKEY 1 #define KEY_BACK 2 #define KEY_FORWARD 3 bit autostate = 0; unsigned char switchl = 0; unsigned char workstate = 0; unsigned char timerdelay = 0; unsigned int timertime = 0; unsigned int timertime1 = 0; void delay(unsigned int temp) { unsigned char i; unsigned int j; for(j=0;j<temp;j++) { for(i=0;i<255;i++); } } void chip_init(void) { P3M1 = 0x80; TMOD = 0x01; AUXR = 0x00; TH0 = 0xff; TL0 = 0xf5;/////9c IE = 0x82; TR0 = 1; SH00T = 0; SWITCH = 1; BACK = 1; RECEIVE = 1; FORWARD = 1; P_UNLOAD = 0; P_LOAD = 0; } unsigned char key(void) { if(SWITCH!=switchl) { delay(10); if(SWITCH!=switchl) { switchl = SWITCH; if(SWITCH==0) { workstate = 0; } else { workstate = 1; } } } if(!FORWARD) { delay(10); if(!FORWARD) { return(KEY_FORWARD); } else { return(NOKEY); } } if(!BACK) { delay(10); if(!BACK) { return(KEY_BACK); } else { return(NOKEY); } } } void timer0_inter(void) interrupt TF0_VECTOR { TH0 = 0xff; TL0 = 0xf5;////9c SH00T = ~SH00T; if(timerdelay<200) { timerdelay++; } } void timer_delay(void) { if(timerdelay>=180) { timertime++; timertime1++; timerdelay = 0; } } void main(void) { unsigned char keytemp; chip_init(); while(1) { timer_delay(); keytemp = key(); if(workstate) { LED_A = 0; LED_H = 1; if(RECEIVE) { if(timertime1>600) { P_UNLOAD = 0; P_LOAD = 1; autostate =1; } timertime = 0; } else { if(autostate) { if(timertime>=200) { P_UNLOAD = 0; P_LOAD = 0; autostate = 0; } } else { P_UNLOAD = 0; P_LOAD = 0; } timertime1 = 0; } } else { LED_A = 1; LED_H = 0; if(keytemp == KEY_BACK) { P_UNLOAD = 1; P_LOAD = 0; } else if(keytemp == KEY_FORWARD) { P_UNLOAD = 0; P_LOAD = 1; } else { P_UNLOAD = 0; P_LOAD = 0; } } } }