- #include<reg52.h>
- #include <intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- unsigned long num=0,tt=0;
- uchar j,k;
- sbit shuru=P1^0;
- sbit shuchu=P1^1;
- uchar a0,b0,c0,d0,e0,f0;
- sbit dula=P2^6;
- sbit wela=P2^7;
- sbit beep=P2^3;
- unsigned char pwm_left_val = 0;//
- unsigned char pwm_t;//周期
- unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
- 0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};
- int flag=0;
- void delay(uchar i)
- {
- for(j=i;j>0;j--)
- for(k=125;k>0;k--);
- }
- void displayw(uint a,uint b,uint c,uint d,uint e,uint f)
- {
- dula=0;
- P0=table[a];
- dula=1;
- dula=0;
-
- wela=0;
- P0=0xfe;
- wela=1;
- wela=0;
- delay(5);
-
- P0=table[b];
- dula=1;
- dula=0;
-
- P0=0xfd;
- wela=1;
- wela=0;
- delay(5);
- P0=table[c];
- dula=1;
- dula=0;
-
- P0=0xfb;
- wela=1;
- wela=0;
- delay(5);
-
- P0=table[d];
- dula=1;
- dula=0;
-
- P0=0xf7;
- wela=1;
- wela=0;
- delay(5);
-
- P0=table[e];
- dula=1;
- dula=0;
-
- P0=0xef;
- wela=1;
- wela=0;
- delay(5);
-
- P0=table[f];
- dula=1;
- dula=0;
-
- P0=0xdf;
- wela=1;
- wela=0;
- delay(5);
- }
- void display0(num)
- {
- if(num<10)
- {
- a0=num;b0=16;c0=16;d0=16;e0=16;f0=16;
- }
- else
- {
- if(num<100)
- {a0=num/10;b0=num%10;c0=16;d0=16;e0=16;f0=16;}
- else
- {
- if(num<1000)
- {a0=num/100;b0=num%100/10;c0=num%10;d0=16;e0=16;f0=16;}
- else
- {
- if(num<10000)
- {a0=num/1000;b0=num%1000/100;c0=num%100/10;d0=num%10;e0=16;f0=16;}
- else
- {
- if(num<100000)
- {a0=num/10000;b0=num%10000/1000;c0=num%1000/100;d0=num%100/10;e0=num%10;f0=16;}
- else
- {
- if(num<1000000)
- {a0=num/100000;b0=num%100000/10000;c0=num%10000/1000;d0=num%1000/100;e0=num%100/10;f0=num%10;}
-
- }
- }
- }
- }
- }
- displayw(a0,b0,c0,d0,e0,f0);
- }
- void main()
- {
- TMOD=0x51;
- TR0=1;
- TR1=1;
- TH1=0x4c;// 5*10^-2s
- TL1=0x00;
- ET0=1;
- ET1=1;
- EA=1;
- while(1)
- {
- display0(num/2);
- if(TL1==1)
- {
- shuchu=~shuchu;
- num++;
- TL1=0;
- }
- if (flag==1)
- {
-
- if ((num/2)<10)
- {
- beep=0;
- delay(8);
- beep=1;
- delay(2);
- }
-
- if ((num/2)>40)
- {
- beep=0;
- delay(20);
- display0(num/2);
- delay(20);
- beep=1;
- }
- }
- }
- }
- /*void timer0() interrupt 1
- {
- pwm_t++;
- if(pwm_t == 200)
- pwm_t = P1 = 0;
- if(pwm_left_val == pwm_t)
- P1 = 0XFF;
- } */
- void time0() interrupt 3
- {
- TH1=0x4c;
- TL1=0x00;
- tt++;
- shuru=~shuru; //定时器每隔50ms发起一次中断,shuru电平变换一次,故模拟输入方波的周期为100ms
- if(tt==200)
- {
- EA=0;
- flag=1;
- }
- }
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