PWM.rar_2052 p_STC PWM_pwm_pwm 0-5V_tachometer

#include<STC12C2052AD.h> #include<intrins.h> sbit L_dat=P1^5; sbit L_clk=P1^6; sbit p34=P3^4; sbit dirt=P1^4; unsigned char disp[6]; unsigned char tcount; unsigned long cishu; unsigned char dy; void display(void) { unsigned char sdate,vvv,n; unsigned char disp1[6]; for(vvv=5;vvv>0;vvv--) { switch(disp[vvv]){ case 0x00:disp1[vvv]=0x3f;break; case 0x01:disp1[vvv]=0x06;break; case 0x02:disp1[vvv]=0x5B;break; case 0x03:disp1[vvv]=0x4F;break; case 0x04:disp1[vvv]=0x66;break; case 0x05:disp1[vvv]=0x6D;break; case 0x06:disp1[vvv]=0x7D;break; case 0x07:disp1[vvv]=0x07;break; case 0x08:disp1[vvv]=0x7F;break; case 0x09:disp1[vvv]=0x6F;break; case 0x0a:disp1[vvv]=0x77;break; case 0x0b:disp1[vvv]=0x7C;break; case 0x0c:disp1[vvv]=0x39;break; case 0x0d:disp1[vvv]=0x5e;break; case 0x0e:disp1[vvv]=0x79;break; case 0x0f:disp1[vvv]=0x71;break; case 0x10:disp1[vvv]=0xbf;break; //0. case 0x11:disp1[vvv]=0x86;break; case 0x12:disp1[vvv]=0xdb;break; case 0x13:disp1[vvv]=0xcf;break; case 0x14:disp1[vvv]=0xe6;break; case 0x15:disp1[vvv]=0xed;break; case 0x16:disp1[vvv]=0xfd;break; case 0x17:disp1[vvv]=0x87;break; case 0x18:disp1[vvv]=0xff;break; case 0x19:disp1[vvv]=0xef;break; case 0x1a:disp1[vvv]=0xf7;break; case 0x1b:disp1[vvv]=0xfc;break; case 0x1c:disp1[vvv]=0xb9;break; case 0x1d:disp1[vvv]=0xde;break; case 0x1e:disp1[vvv]=0xf9;break; case 0x1f:disp1[vvv]=0xf1;break;//F. case 0x20:disp1[vvv]=0x76;break;//h case 0x21:disp1[vvv]=0x06;break;//I case 0x22:disp1[vvv]=0x0f;break;//j case 0x23:disp1[vvv]=0x73;break;//p case 0x24:disp1[vvv]=0x3e;break;//U case 0x25:disp1[vvv]=0x00;break;//灭 case 0x26:disp1[vvv]=0x6d;break;// case 0x27:disp1[vvv]=0x38;break; case 0x28:disp1[vvv]=0x40;break; case 0x29:disp1[vvv]=0xe7;break; default:break;} } for(vvv=5;vvv>0;vvv--) { sdate=disp1[vvv]; for(n=0;n<=7;n++) {ACC=sdate; ACC<<=1; L_clk=0; L_dat=CY; _nop_(); L_clk=1; sdate=ACC; } } } void int_t1() interrupt 3 { unsigned long jishu; ET1=0; TR1=0; tcount=tcount-1; if(tcount==0) { tcount=20; ET0=0; TR0=0; if(dirt==0) { disp[5]=0x25; } else { disp[5]=0x28; } jishu=TH0*256+TL0; jishu=jishu*60; cishu=jishu/333; disp[4]=(cishu-cishu%1000)/1000; disp[3]=(cishu%1000-cishu%100)/100; disp[2]=(cishu%100-cishu%10)/10; disp[1]=cishu%10; display(); TH0=0; TL0=0; TR0=1; ET0=1; TR1=1; ET1=1; } else { TH1=0x3C;//50ms TL1=0xb0; ET1=1; TR1=1; } } void delay(unsigned char j) { unsigned char k,l; for(l=0;l<=j;l++) for(k=0;k<=250;k++); } void main(void) { WDT_CONTR=0x3c; TMOD=0x15; //TO计数，TI计时 TH0=0x00; TL0=0x00; TH1=0x3C;//50ms TL1=0xb0; tcount=20; CMOD=0x02; CL=0x00; CH=0x00; CCAP0L=256; CCAP0H=256; CCAPM0=0x42; CR=1; disp[5]=0x25; disp[4]=0; disp[3]=0; disp[2]=0; disp[1]=0; display(); TR0=1; ET0=1; TR1=1; ET1=1; PT0=1; EA=1; while(1) { WDT_CONTR=0x3c; if(cishu==0) { PCA_PWM0=0x03; // CCAP0H=256; } else if(cishu>=1500) { PCA_PWM0=0x00; CCAP0H=00; } else { PCA_PWM0=0x00; // cishu1=cishu*1000/5859; // CCAP0H=256-cishu1; CCAP0H=256-cishu*1000/5859; } display(); WDT_CONTR=0x3c; delay(80); } }