- #include <reg52.h>
- unsigned char code dispbit[]={0xef,0xdf,0xbf,0x7f};
- unsigned char code dispcode[]={0xc0,0Xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
- unsigned char dispbuf[4]={0,0,0,0};
- unsigned char temp[8];
- unsigned char dispcount;
- unsigned char T0count;
- unsigned char timecount;
- bit flag;
- unsigned long x;
- void main(void)
- {
- unsigned char i;
- TMOD=0x15;
- TH0=0;
- TL0=0;
- TH1=(65536-4000)/256;
- TL1=(65536-4000)%256;
- TR1=1;
- TR0=1;
- ET0=1;
- ET1=1;
- EA=1;
- while(1)
- {
- if(flag==1)
- {
- flag=0;
- x=T0count*65536+TH0*256+TL0;
- for(i=0;i<4;i++)
- {
- temp[i]=0;
- }
- i=0;
- while(x/10)
- {
- temp[i]=x%10;
- x=x/10;
- i++;
- }
- temp[i]=x;
- for(i=0;i<4;i++)
- {
- dispbuf[i]=temp[i];
- }
- timecount=0;
- T0count=0;
- TH0=0;
- TL0=0;
- TR0=1;
- }
- }
- }
- void t0(void) interrupt 1 using 0
- {
- T0count++;
- }
- void t1(void) interrupt 3 using 0
- {
- TH1=(65536-4000)/256;
- TL1=(65536-4000)%256;
- timecount++;
- if(timecount==250)
- {
- TR0=0;
- timecount=0;
- flag=1;
- }
- P0=dispcode[dispbuf[dispcount]];
- P2=dispbit[dispcount];
- dispcount++;
- if(dispcount==4)
- {
- dispcount=0;
- }
- }
51黑論壇_簡易頻率計 (1).zip
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2018-12-12 18:28 上傳
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