51单片机独立按键程序.zip

#include <reg52.h> #include "key.h" #include "key2.h" void tim0_initial(); void show(); void debug_on(); void debug_off(); void debug_upside(); unsigned char feedback_start0=0, feedback_start1=0; unsigned int num=0, second=0, feedback0=0, feedback1=0, feedback2=0, feedback3=0, feedback4=0, feedback5=0; unsigned char LED=0, SW=0; unsigned char time=0; sbit OE = P3^4; //使能端，低电平有效，控制灯和继电器 sbit LE_Led = P3^7; //锁存端，低电平锁存，控制灯 sbit LE_Relay = P3^6; //锁存端，低电平锁存，控制继电器 sbit input1=P2^1; void main() { OE = 0; LED = 0; show(); SW = 0; show(); independent_key_initial(); independent_key_initial_j(); tim0_initial(); while(1) { independent_key_scan(); independent_key_scan_j(); /* 作用：判断哪个大按键被按下, 同时，启动大按键对应信号通路的反馈, 定时器每2ms溢出后会作出反馈 */ /* 现象1：如果按下了，GPO(P0.0~P0.5)对应的按键灯亮，继电器接通 */ /* 现象2：测试板的小灯会亮 */ if ((keyname_i&0x80) == 0x80) { keyname_i&=~0x80; switch(keyname_i) { case 0x01: SW ^= (1<<0); // SW &=~ (1<<1); // SW &=~ (1<<2); show(); LED ^= (1<<0); // LED &=~ (1<<1); // LED &=~ (1<<2); show(); // feedback_start0 = 1;//启动反馈检测 break; case 0x02: // SW &=~ (1<<0); SW ^= (1<<1); // SW &=~ (1<<2); show(); // LED &=~ (1<<0); LED ^= (1<<1); // LED &=~ (1<<2); show(); // feedback_start0 = 2; break; case 0x03: if (time == 0) { time++; SW |= (1<<0); SW |= (1<<1); // SW |= (1<<2); show(); LED |= (1<<0); LED |= (1<<1); LED |= (1<<2); show(); } else { time = 0; SW &=~ (1<<0); SW &=~ (1<<1); SW &=~ (1<<2); show(); LED &=~ (1<<0); LED &=~ (1<<1); LED &=~(1<<2); show(); } // feedback_start0 = 3; break; #if 0 case 0x04: SW |= (1<<3); SW &=~ (1<<4); SW &=~ (1<<5); show(); LED |= (1<<3); LED &=~ (1<<4); LED &=~ (1<<5); show(); // feedback_start1 = 1; break; case 0x05: SW &=~ (1<<3); SW |= (1<<4); SW &=~ (1<<5); show(); LED &=~ (1<<3); LED |= (1<<4); LED &=~ (1<<5); show(); // feedback_start1 = 2; break; case 0x06: SW &=~ (1<<3); SW &=~ (1<<4); SW |= (1<<5); show(); LED &=~ (1<<3); LED &=~ (1<<4); LED |= (1<<5); show(); // feedback_start1 = 3; break; #endif default: break; } } #if 0 if ((keyname_j&0x80) == 0x80) { keyname_j&=~0x80; switch(keyname_j) { case 0x01: SW |= (1<<0); SW &=~ (1<<1); SW &=~ (1<<2); show(); LED |= (1<<0); LED &=~ (1<<1); LED &=~ (1<<2); show(); // feedback_start0 = 1;//启动反馈检测 break; case 0x02: SW &=~ (1<<0); SW |= (1<<1); SW &=~ (1<<2); show(); LED &=~ (1<<0); LED |= (1<<1); LED &=~ (1<<2); show(); // feedback_start0 = 2; break; case 0x03: SW &=~ (1<<0); SW &=~ (1<<1); SW |= (1<<2); show(); LED &=~ (1<<0); LED &=~ (1<<1); LED |= (1<<2); show(); // feedback_start0 = 3; break; case 0x04: SW |= (1<<3); SW &=~ (1<<4); SW &=~ (1<<5); show(); LED |= (1<<3); LED &=~ (1<<4); LED &=~ (1<<5); show(); // feedback_start1 = 1; break; case 0x05: SW &=~ (1<<3); SW |= (1<<4); SW &=~ (1<<5); show(); LED &=~ (1<<3); LED |= (1<<4); LED &=~ (1<<5); show(); // feedback_start1 = 2; break; case 0x06: SW &=~ (1<<3); SW &=~ (1<<4); SW |= (1<<5); show(); LED &=~ (1<<3); LED &=~ (1<<4); LED |= (1<<5); show(); // feedback_start1 = 3; break; default: break; } } #endif /* 作用：测试板上的小按键测试程序 */ /* 判断小按键是否被按下,如果按下了，代表线路不通*/ #if 0 if ((keyname_j&0x80) == 0x80) { keyname_j&=~0x80; switch(keyname_j) { case 0x01: LED &=~ (1<<0); show(); break; case 0x02: LED &=~ (1<<1); show(); break; case 0x03: LED &=~ (1<<2); show(); break; case 0x04: LED &=~ (1<<3); show(); break; case 0x05: LED &=~ (1<<4); show(); break; case 0x06: LED &=~ (1<<5); show(); break; default: break; } } #endif } } /* 作用：在12Mhz下的晶振下，每2ms溢出的定时0工作在方式0的初始化程序*/ void tim0_initial() { TMOD = 0x01;//工作在方式1，也就是16位定时器 TH0 = (65536-2000)/256;//12MHz, 2ms TL0 = (65536-2000)%256; EA = 1;//开总中断 ET0 = 1;//开定时器0中断 TR0 = 1;//启动定时器0 } /* 作用：定时0工作在方式0的溢出中断程序*/ void tim0() interrupt 1 { //因为硬件清除溢出标志，也不用管中断标志位 TH0 = (65536-2000)/256;//重装初值，因为不会自动重装 TL0 = (65536-2000)%256; independent_tim0_key_scan(); independent_tim0_key_scan_j(); #if 0 /*三路只能启动一路反馈*/ /* 作用：如果线路断了，就是GPI(P2.0~P2.2)其中一路断路，输入回单片机，单片机检测到哪路断路就灭按键灯*/ switch(feedback_start0) { case 1: if ((P2&(1<<0)) == (1<<0)){ LED |= (1<<0); show(); } else { LED &=~ (1<<0); show(); } break; case 2: if ((P2&(1<<1)) == (1<<1)) { LED |= (1<<1); show(); } // if(P2&(1<<1) == 0){//==优先级比&更高！这里很坑爹啊 if((P2&(1<<1)) == 0){ LED &=~ (1<<1); show(); } break; case 3: if ((P2&(1<<2)) == (1<<2)) { LED |= (1<<2); show(); } else { LED &=~ (1<<2); show(); } break; default: break; } /*三路只能启动一路反馈*/ /*作用：如果线路断了，就是GPI(P2.3~P2.5)其中一路断路，输入回单片机，单片机检测到哪路断路就灭按键灯*/ switch(feedback_start1) { case 1: if ((P2&(1<<3)) == (1<<3)){ LED |= (1<<3); show(); } else { LED &=~ (1<<3); show(); } break; case 2: if ((P2&(1<<4)) == (1<<4)) { LED |= (1<<4); show(); } // if(P2&(1<<4) == 0){//==优先级比&更高！这里很坑爹啊 if((P2&(1<<4)) == 0){ LED &=~ (1<<4); show(); } break; case 3: if ((P2&(1<<5)) == (1<<5)) { LED |= (1<<5); show(); } else { LED &=~ (1<<5); show(); } break; default: break; } second++; if (second== 250) { second= 0; } #endif } /* 作用：显示输出程序 */ /* 分析现象：由于锁存器开的时候就会影响整个P0，因此不能开一次锁存器就设置一个位的电平*/ /* 必须要先开锁存器，然后输出整个P0，最后关锁存器*/ /* 方法：就是每次位操作中间变量LED或者SW，利用LED和SW两个变量来分别记录按键灯和继电器的状态，而无需考虑573，然后再传送到P0 */ void show() { //先输出按键灯 LE_Led = 1; P0 = LED; LE_Led = 0; P0 = 0x00; //先输出按键灯 LE_Led = 1; P0 = LED; LE_Led = 0; P0 = 0x00; //再输出继电器和小灯 LE_Relay = 1; P0 = SW; LE_Relay = 0; P0 = 0x00; //再输出继电器和小灯 LE_Relay = 1; P0 = SW; LE_Relay = 0; P0 = 0x00; } void debug_on() { LED |= (1<<5); show(); } void debug_off() { LED &=~ (1<<5); show(); } void debug_upside() { LED ^= (1<<5); show(); }