4_led_lock.rar_ATmage16数码管_四位密码锁 LED_密码锁 数码管

/* * GccApplication7.c * * Created: 2013/8/18 14:13:52 * Author: sky */ #include <avr/io.h> #include <util/delay.h> #define uchar unsigned char #pragma data: code uchar const table[10]={ 0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90 }; //段码表 uchar const weitable[4] ={ 0xFE, 0xFD,0xFB,0xF7}; //选通值 uchar key[4],temp,num,i=0xff,j=0xff; uchar const good[]={0xc2,0xc0,0xc0,0xa1}; uchar const keytodoor[]={0xF9,0xB0,0xF9,0x99}; void keys() { uchar key1=(PIND&(1<<PD2)),key2=(PIND&(1<<PD3)),key3=(PINA&(1<<PA4)),key4=(PINA&(1<<PA5)); DDRD=0x00; PORTD=0x05; DDRA=0x00; PORTA=0xff; if(key1==0) { _delay_ms(10); if(key1==0) { temp=1; while(PIND!=0xff); } } if(key2==0) { _delay_ms(10); if(key2==0) { temp=2; while(PIND!=0xff); } } if(key3==0) { _delay_ms(10); if(key3==0) { temp=3; while(PIND!=0xff); } } if(key4==0) { _delay_ms(10); if(key4==0) { temp=4; while(PIND!=0xff); } } } int main(void) { for(num=0;num<4;num++) { DDRD=0x00; DDRA=0x00; PORTA=0xff; PORTD=0xff; while(1){keys();if(temp!=0)break;} key[num]=table[temp]; DDRA=0x0f; DDRB=0xff; PORTB=key[num]; PORTA=weitable[num]; _delay_ms(5000); temp=0; } for(num=0;num<4;num++) { if(key[num]!=keytodoor[num])break; } if(num==4) { while(1) for(num=0;num<4;num++) { DDRA=0xff; DDRB=0xff; PORTA=weitable[num]; PORTB=good[num]; _delay_ms(10); } } else { DDRB=0xff; DDRA=0xff; PORTB=0xbf; PORTA=0x00; while(1); } }