c語言編一個數字頻率計四位顯示范圍0-9.9khz 幫我改下

ID:49805 · 發表于 2013-4-28 18:03

#include #defineSegment P2 #define sl P0 sbit addr0=P1^0; // 定義數據端口地址，000時16分頻,100 分頻 sbit addr1=P1^1; sbit addr2=P1^2; sbit clear=P1^3; //計數器清零 sbit ledM=P1^4; //檔位led顯示 sbit ledK=P1^5; sbit ledB=P1^6; unsigned char cnt; //定時1s計數 unsigned char d[4]; //對應數碼管的各位 unsigned char level; //檔位 unsigned int tN; //不同檔位計時值 unsigned int fCnt; //脈沖下降沿次數 unsigned int regCnt; //脈沖次數暫存 unsigned int pCnt; //頻率顯示 unsigned char Num[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; void Delay(unsignedintDelayTime) { while(DelayTime--); } void disp() { if(level==0) //B位檔 { d[3]=0; d[2]=pCnt/100; d[1]=(pCnt%100)/10; d[0]=pCnt%10; sl=0xfe;Delay(1);Segment=Num[d[3]];Delay(300); sl=0xfd;Delay(1);Segment=Num[d[2]];Delay(300); sl=0xfb;Delay(1);Segment=Num[d[1]];Delay(300); sl=0xf7;Delay(1);Segment=Num[d[0]];Delay(300); } else if(level==1) { d[3]=pCnt/1000; d[2]=(pCnt%1000)/100; d[1]=(pCnt%100)/10; d[0]=pCnt%10; sl=0xfe;Delay(1);Segment=Num[d[3]];Delay(300); sl=0xfd;Delay(1);Segment=Num[d[2]];Delay(300); sl=0xfb;Delay(1);Segment=Num[d[1]]+0x80;Delay(300); //帶小數點 sl=0xf7;Delay(1);Segment=Num[d[0]];Delay(300); } else if(level==2) { d[3]=pCnt/1000; d[2]=(pCnt%1000)/100; d[1]=(pCnt%100)/10; d[0]=pCnt%10; sl=0xfe;Delay(1);Segment=Num[d[3]]+0x80;Delay(300); //帶小數點 sl=0xfd;Delay(1);Segment=Num[d[2]];Delay(300); sl=0xfb;Delay(1);Segment=Num[d[1]];Delay(300); sl=0xf7;Delay(1);Segment=Num[d[0]];Delay(300); } else { d[3]=0; d[2]=0; d[1]=0; d[0]=0; } } void intial() { clear=1; //分頻器初始化 addr0=0; addr1=0; addr2=1; tN=20; //檔位初始化為Hz檔 level=0; ledM=1; //顯示Hz檔 ledK=1; ledB=0; TMOD=0x61; //定時器0，工作方式1，計數器1，工作方式2(8位自動重裝) TH0=(65536-50000)/256; //計數50ms TL0=(65536-50000)%256; TH1=256-1;//計數器1計數初值 TL1=256-1; TR0=1; //開定時器0中斷 ET0=1; //定時器0允許 TR1=1; //開計數器1中斷 ET1=1; //允許計數器1中斷 EA=1; //總中斷允許 } void main() { intial(); while(1) { disp(); } } void timer0() interrupt 1 { cnt++; if(cnt==tN) { ET1=0; //計時1s時，暫停外部計數1 TR1=0; cnt=0; regCnt=fCnt; //更新顯示 fCnt=0; //頻率計數清零 clear=0; //硬件分頻器清零 clear=1; if(level==0) //檔位切換 { pCnt=regCnt; if(regCnt>999) { pCnt=0; //顯示清零 level=1; tN=1; // 定時50ms addr2=0;//進行分頻處理 TH1=0xfb; //50分頻 256-5 TL1=0xfb; } } else if(level==1) { if(regCnt<1) { level=0; tN=20; //定時1s addr2=1; //不分頻 th1="0xff;" // 256-1 tl1="0xff;" // 256-1 ledm="1;" //顯示HZ檔 ledk="1; " ledb="0; } else" if(regCnt<1000)//KHz檔 { level=1; tN=1; //定時50ms addr2=0; //硬件分頻處理 TH1=0xfb; //50分頻 256-5 TL1=0xfb; //256-5 pCnt=regCnt*10; //換算成相應的顯示：f=regCnt*100 ledM=1; //顯示KHz檔 ledK=0; ledB=1; } else { level=2; tn="1;" //定時50ms addr2=0; //分頻 TH1=0xf6; // 100分頻 256-10 TL1=0xf6; //256-10 pCnt=0; //換算成相應的顯示：f=regCnt*100 ledM=0; //顯示MHz檔 ledK=1; ledB=1; } } else if(level==2) { if(regCnt<500) //KHz檔 { level=1; tN=1; //定時50ms addr2=0; //分頻 th1="0xfb;" // 50分頻 256-5 TL1=0xfb; //256-5 pCnt=0; //換算成相應的顯示 ledM=1; //顯示KHz檔 ledK=0; ledB=1; } else if(regCnt<5000) { level=2; tN=1; //定時50ms addr2=0; //分頻 TH1=0xf6; //100分頻 256-10 TL1=0xf6; //256-10 pcnt="regCnt*2;" //換算成相應的顯示：f=regCnt*100 ledM=0; //顯示MHz檔 ledK=1; ledB=1; } else { level=3; //超出范圍 ledM=1; //全滅 ledK=1; ledB=1; } } ET1=1; //恢復外部計數1 TR1=1; } TH0=0x3c; //(65536-50000)/256; TL0=0xb0; //(65536-50000)%256; } void enterFre() interrupt 3 //外部頻率輸入 { fCnt++; } 這個程序 0-999hz是對的但是1000-9999hz 只能顯示千位的數字啊附件里面有程序啊

[此貼子已經被作者于2013-4-28 18:06:02編輯過]