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#include < reg51.h > #include <intrins.h> sbit a=P1^0; sbit b=P1^1; sbit c=P1^2; sbit d=P1^3; sbit T = P2^0; sbit K1 = P1^4; sbit K2 = P1^5; sbit K3 = P1^6; sbit K4 = P1^7; #define GPIO_DIG P0 unsigned char code DIG_CODE[17] = { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; unsigned intLedNumVal,g,m,DisplayData[4]; void Delay10ms(unsigned int c); void DigDisplay1(); void beep(); void system_Ini() { TMOD = 0x01; TH0 = 0xee; TL0 = 0x00; IE = 0x8A; TR0 =1; } void main() { unsigned char i; system_Ini() ; LedNumVal=300; g=0; while(1) { i=0; DisplayData[0] = ~ DIG_CODE[LedNumVal/60/10]; DisplayData[1] = ~ (DIG_CODE[LedNumVal/60%10]|0x80); DisplayData[2] = ~ DIG_CODE[LedNumVal%60/10]; DisplayData[3] = ~ DIG_CODE[LedNumVal%10]; DigDisplay1(); if (K1==0) { Delay10ms(1); if(K1==0) { TR0 = 0; LedNumVal=(LedNumVal/60+1)*60+30; if(LedNumVal>3601) LedNumVal=30; while(!K1); TR0 = 1; } } if(K2==0) { Delay10ms(1); if(K2==0) { LedNumVal=300; while(!K2); } } if(K3==0) { Delay10ms(1); if(K3==0) { LedNumVal=1200; while(!K3); } } if(K4==0) { Delay10ms(1); if(K4==0) { LedNumVal=3600; while(!K4); } } } } void T0zd(void) interrupt 1 { TH0 = 0xee; TL0 = 0x00; g++; if(g==200) { g=0; LedNumVal--; if(LedNumVal==-1) while(1) beep(); } } void beep() { a=b=c=d=0; P0=~ 0x40; T=1; Delay10ms(50); T=0; Delay10ms(50); } void Delay10ms(unsigned int c) { unsigned char a, b; for (;c>0;c--) { for(b=38;b>0;b--) { for(a=130;a>0;a--); } } } void DigDisplay1() { unsigned int j; a=0,b=1,c=1,d=1; GPIO_DIG= DisplayData[0]; j= 100; while(j--); GPIO_DIG= 0xff; a=1,b=0,c=1,d=1; GPIO_DIG= DisplayData[1]; j= 100; while(j--); GPIO_DIG= 0xff; a=1,b=1,c=0,d=1; GPIO_DIG= DisplayData[2]; j= 100; while(j--); GPIO_DIG= 0xff; a=1,b=1,c=1,d=0; GPIO_DIG= DisplayData[3]; j= 100; while(j--); GPIO_DIG= 0xff; }
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