Classic and commonly used single chip microcomputer C program

//Hexadecimal<->decimal conversion program

 unsigned char d[10]; //10-bit display buffer for display

 //==========================================================
    //Hexadecimal to decimal output subroutine: display data, start bit, end bit, whether there is a decimal point
 //==============================================================
 void output(unsigned long dd,unsigned char s,unsigned char 
 e,unsigned char  DIP ) {
    unsigned long div;
    unsigned char tm[8],i,j;
    div=10000000;
    for (i=0;i<8;i++) {
        tm[i]=dd/div;
        dd%=div;
        div/=10;
    }
    for (i=0;i<6;i++) {
        if (tm[i]!=0) break;
        tm[i]=nul;
    }
    tm[5]|=dip; //Decimal point control, please refer to "Serial LED Digital Tube Display Driver"
    j=7;
    for (i=s;i        d[i]=tm[j];
        j--;
    }
 }

 //Convert the decimal number of display digits 5-9 into hexadecimal number
 unsigned int input(void) {
    unsigned int dd,dat;
    dd=10000;dat=0;
    for (i=5;i<10;i++) {
        dat+=dd*temp;
        dd/=10;
    }
    return(dat);
 }
 /* 89C51 series CPU programmer receives CPU program*/

 ＃i nclude
 ＃i nclude
 ＃i nclude

 #define e 8
 #define p 9
 #define l 10

 sbit led=P3^2;
 sbit p27=P2^7;
 sbit p26=P2^6;
 sbit p36=P3^6;
 sbit p37=P3^7;
 sbit rst=P3^3;
 sbit ale=P3^5;
 sbit vpp=P3^4;

 bit b_break;
 unsigned int adds;

 //    13.8mS
 void int_t0(void) interrupt 1 {
    TH0=-100;
    b_break=1;
 }

 void wait(unsigned char w) {
    unsigned int t=w*184;
    b_break=0;
    TL0=-t%256-1;TH0=-t/256;
    while (b_break==0) {}
 }

 void nop(void) {
    _nop_();_nop_();_nop_();_nop_();
    _nop_();_nop_();_nop_();_nop_();
    _nop_();_nop_();_nop_();_nop_();
    _nop_();_nop_();_nop_();_nop_();
    _nop_();_nop_();_nop_();_nop_();
 }

 unsigned char command(void) {
    TH0=-100;b_break=0;
    while (RI==0) {if (b_break==1) return(0);}
    RI=0;
    return(SBUF);
 }

 void earsure(unsigned char cpu) {
    switch (cpu) {
    case 1:        //89C51
    case 2:rst=p26=1;p27=p36=p37=0;nop();vpp=1;nop();
        ale=0;wait(110);ale=1;nop();
        break;
    case 3:
    case 4:break;
    case 5:
    case 6:break;
    }
 }

 void program(unsigned char cpu) {
    unsigned int bdata adds=0;
    unsigned char d;
    switch (cpu) {
    case 1:    //89C51
    case 2:
        p36=p37=1;rst=1;
        while (1) {
            TH0=-100;b_break=0;
            while (RI==0) {if (b_break==1) return;}
            RI=0;
            d=SBUF;
            //address
            P0=adds%256;
            P2=adds/256;
            p27=1;
            //data
            P1=d;
            nop();    //48clcl
            //vpp
            vpp=1;
            nop();    //48clcl
            //ale
            ale=0;
            wait(1);//100uS
            ale=1;
            nop();    //10uS
            vpp=0;
            nop();    //48clcl
            p27=0;
            nop();    //48clcl
            P1=0xff;
            TH0=-100;b_break=0;
            while (d!=P1) {if (b_break==1) return;}    //data 
polling
            SBUF=d;
            adds++;
        }
        break;
    case 3:
    case 4:
    case 5:
    case 6:break;
    }
 }

 void LOCk(unsigned char cpu) {
    unsigned char i;
    switch (cpu) {
    case 1:    //89c51
    case 2:
        //lock 1
        rst=p26=p36=p27=p37=1;nop();
        vpp=1;
        nop();
        ale=0;
    //    for (i=0;i<6;i++) wait(100);
        wait(1);
        ale=1;
        nop();
        vpp=0;
        nop();
    
        //lock 2
        rst=p26=p27=1;p36=p37=0;nop();
        vpp=1;
        nop();
        ale=0;
    //    for (i=0;i<6;i++) wait(100);
        wait(1);
        ale=1;
        nop();
        vpp=0;
        nop();
        
        //lock 3
        rst=p26=p36=1;p27=p37=0;nop();
        vpp=1;
        nop();
        ale=0;
    //    for (i=0;i<6;i++) wait(100);
        wait(1);
        ale=1;
        nop();
        vpp=0;
        nop();
        break;
    case 3:
    case 4:
    case 5:
    case 6:break;
    }
 }

 void main(void) {
     unsigned char disp,flash,temp,cpu;
     EA=1;
     SCON=0xd8;PCON=0x80;
     TMOD=0x21;
     TL1=TH1=0xff;TR1=1;
     TH0=-100;ET0=TR0=1;

     flash=0x80;

     while (1) {
         temp=command();
         switch (temp) {
         case 0:
         case 1:        //89c51
         case 2:        //89C52
         case 3:        //80f51
         case 4:        //80F52
         case 5:        //87F51
         case 6:cpu=temp;SBUF=temp;break;//87f52
         case e:SBUF=temp;earsure(cpu);break;    //erasure
         case p:SBUF=temp;program(cpu);break;    //program
         case l:LOCk(cpu);SBUF=temp;break;    //lock
         default:SBUF=temp;break;
         }
         b_break=0;
         if ((++disp)>flash) {disp=0;LED=!led;}
     }
 }
 //HT1380实时时钟驱动程序

 sbit clock_dat=P0^1;
 sbit clock_clk=P0^2;
 sbit clock_rst=P0^3;

 sbit a0=A CC ^0;
 sbit a1=ACC^1;
 sbit a2=ACC^2;
 sbit a3=ACC^3;
 sbit a4=ACC^4;
 sbit a5=ACC^5;
 sbit a6=ACC^6;
 sbit a7=ACC^7;

 void clock_out(unsigned char dd) {
     ACC=dd;
     clock_dat=a0;clock_clk=1;clock_clk=0;
     clock_dat=a1;clock_clk=1;clock_clk=0;
     clock_dat=a2;clock_clk=1;clock_clk=0;
     clock_dat=a3;clock_clk=1;clock_clk=0;
     clock_dat=a4;clock_clk=1;clock_clk=0;
     clock_dat=a5;clock_clk=1;clock_clk=0;
     clock_dat=a6;clock_clk=1;clock_clk=0;
     clock_dat=a7;clock_clk=1;clock_clk=0;
 }
 unsigned char clock_in(void) {
     clock_dat=1;
     a0=clock_dat;
     clock_clk=1;clock_clk=0;a1=clock_dat;
     clock_clk=1;clock_clk=0;a2=clock_dat;
     clock_clk=1;clock_clk=0;a3=clock_dat;
     clock_clk=1;clock_clk=0;a4=clock_dat;
     clock_clk=1;clock_clk=0;a5=clock_dat;
     clock_clk=1;clock_clk=0;a6=clock_dat;
     clock_clk=1;clock_clk=0;a7=clock_dat;
     return(ACC);
 }
 unsigned char read_clock(unsigned char ord) {
     unsigned char dd=0;
     clock_clk=0;
     clock_rst=0;
     clock_rst=1;
     clock_out(ord);
     dd=clock_in();
     clock_rst=0;
     clock_clk=1;
     return(dd);
 }
 void write_clock(unsigned char ord,unsigned char dd) {
     clock_clk=0;
     clock_rst=0;
     clock_rst=1;
     clock_out(ord);
     clock_out(dd);
     clock_rst=0;
     clock_clk=1;
 }
 /*单个汉字库字摸提取程序，tc2.0编译*/
 ＃i nclude "stdio.h"
 ＃i nclude "dos.h"
 ＃i nclude "process.h"
 ＃i nclude "string.h"

 void main(void) {
     long int num_bytes,qm,wm;
     unsigned char d,i,j,k,a[132],b[132];
     unsigned char * data;
     unsigned char * Hz;
     statIC unsigned  char dd[103];
     FILE *FP;

     if ((fp=fopen("hzk16f","rb"))==NULL) {
         printf("CAN't open hzk16n");
         exit(1);
     }
     clrscr();
     while (1) {

         data=(unsigned char *) malloc(33);
         printf("please input:n");
         scanf("%s",dd); /*Input a Chinese character*/

         qm=* dd;        /*通过区位码计算其在hzk16f文件中的偏移地址*/
         qm=qm-161;
         if (qm>87) exit(0);
         wm=* (dd+1);
         wm=wm-161;
         if (wm>94) exit(0);
         num_bytes=((long)qm*94+wm)*32;
         fseek(fp,num_bytes,SEEK_SET);
         fgets(data,33,fp);
         for (i=0;i<32;i++) b[i]=* data++;
         for (i=0;i<32;i+=2) a[i/2]=b[i];
         for (i=0;i<32;i+=2) a[i/2+16]=b[i+1];
         for (i=8;i<16;i++) b[i]=a[i];
         for (i=8;i<16;i++) a[i]=a[i+8];
         for (i=8;i<16;i++) a[i+8]=b[i];

         /*Conversion, the storage format of hzf16f in the computer is calculated by row bytes, and general LCDs use column bytes*/
         for (k=0;k<32;k+=8) {
             for (j=0;j<8;j++) {
                 d=0;
                 for (i=0;i<8;i++) {
                     if (a[i+k]>=0x80) {
                         switch (i) {
                         case 0:d+=1;break;
                         case 1:d+=2;break;
                         case 2:d+=4;break;
                         case 3:d+=8;break;
                         case 4:d+=0x10;break;
                         case 5:d+=0x20;break;
                         case 6:d+=0x40;break;
                         case 7:d+=0x80;break;
                         }
                     }
                 }
                 for (i=0;i<8;i++) a[i+k]<<=1;
                 b[j+k]=d;
             }
         }
         clrscr();
         printf("/*%s:*/n",dd); /*Output hexadecimal number in 0x00 format*/
         for (k=0;k<32;k+=8) {
             for (j=0;j<8;j++) printf("0x%x,",b[j+k]);
             printf("n");
         }
         getch();
     }
 }
 //Key scanning driver

 unsigned char key,key_h,kpush;
 unsigned int key_l;

 //Buttons connected to p1.0, p1.1, p1.2

 void int_t0(void) interrupt 1 {
     unsigned char dd,i;
     TL0=TL0+30;TH0=0xfb; //800
     /* key identification */
     if ((P1&0x7)==0x7) {
         if ((key_l>30)&&(key_l<800)&&(key_h>30)) {        
 //Release the key. If the previous key press time is less than 1 second, read the key value
             key=kpush;
         }
         if ((++key_h)>200) key_h=200;
         key_l=0;
         if (key>=0x80) key=0;                            
 //If the previous key was pressed for 1 second, clear the key value
     } else {
         kpush=P1&0x7;
         key_l++;
         if ((key_l>800)&&(key_h>30)) {                    
 //If the key is pressed for more than 1 second, add 0x80 to the key value to indicate a long press
             key=kpush|0x80;
             key_h=0;
             key_l=0;
         }
     }
 }

 void main(void) {
     TMOD=0x1;TR0=1;ET0=1;EA=1;
     while (1) {
         while (!key) {}
         switch (key) {
         case 1:break;
         case 2:break;
         }
     }
 //Serial drive LED display,
 //One 74hc595 shift register drives the transistor to drive the LED bit,
 //Two 74hc595 drive the LED segment, mode bit 5 bit x 8 segment x 2 = 10 digital tubes
 //5 frequency division , each scan time bit 1.25ms

 //Define special symbols

 #define nul 0xf
 #define qc 0xc
 #define qb 0xb
 #define q_ 0xa
 #define q__ 0xd
 #define q___ 0xe
 #define qp 0x10
 #define qe 0x11
 #define qj 0x12
 #define qn 0x13
 #define qf 0x14
 #define qa 0x15
 #define qr 0x16
 #define qd 0x17
 #define qu 0x18
 #define ql 0x19
 #define qh 0x1a
 #define qwen 0x1b
 #define qt 0x1c
 #define qla 0x1d
 #define qlb 0x1e
 #define qlc 0x1f
 #define qld 0x20
 #define qle 0x21
 #define qlf 0x22
 #define qlg 0x23
 #define qldp 0x24

 //Display segment information. The segment information of different LED combinations only needs to change 8 values.
 //Therefore, this definition is universal.

 //    显示    
 //        -d 20
 //    |c 40    |e 10
 //        - g        80        
 //    |b 2    |f 4
 //        _a1    .dp 8
 #define pa 1
 #define pb 2
 #define pc 0x40
 #define pd 0x20
 #define pe 0x10
 #define pf 4 
 #define pg 0x80
 #define PDP 8

 //--------------
 #define l0 PDP+pg
 #define l1 255-pf-pe
 #define l2 PDP+pc+pf
 #define l3 pdp+pc+pb
 #define l4 pdp+pa+pb+pd
 #define l5 pdp+pb+pe
 #define l6 pdp+pe
 #define l7 pdp+pc+pg+pb+pa
 #define l8 pdp
 #define l9 pdp+pb
 #define la pdp+pa
 #define lb pdp+pd+pe
 #define lc pdp+pg+pe+pf
 #define ld pdp+pc+pd
 #define le pdp+pe+pf
 #define lf pdp+pe+pf+pa
 #define l_ 255-pg
 #define lnul 255
 #define ll pdp+pg+pd+pf+pe
 #define lp pdp+pa+pf
 #define lt pdp+pd+pe+pf
 #define lr pdp+pe+pf+pg+pa
 #define ln pdp+pg+pa
 #define lh pdp+pd+pe+pa
 #define ly pdp+pb+pd
 #define lu pdp+pg+pd
 #define l__ pdp+pg+pb+pc+pe+pf
 #define l___ l__-pg
 #define l_1 255-pa
 #define l_2 255-pa-pg
 #define lj 255-(pe+pf+pa)
 #define lwen 255-(pd+pe+pg+pb)
 #define lall 0

 #define lla 255-pa
 #define llb 255-pb
 #define llc 255-pc
 #define lld 255-pd
 #define lle 255-pe
 #define llf 255-pf
 #define llg 255-pg
 #define lldp 255-pdp

 //The bit information sent serially is currently a 10-bit LED display.
 unsigned char code un_dig[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb};
 //The short message sent serially.
 unsigned char code 
 un_disp[]={l0,l1,l2,l3,l4,l5,l6,l7,l8,l9,l_,lb,lc,l__,l___,lnul,lp,le,lj,ln,lf,la,lr,ld,lu, ll,
 lh,lwen,lt,lla,llb,llc,lld,lle,llf,llg,lldp,lnul};

 sbit d_clk=P0^0; //Shift clock
 sbit d_dat=P0^1; //Shift data
 sbit d_st=P0^2; //Shift lock

 unsigned char dig; //bit scan counter
 unsigned char d[10]; //display buffer

 //Send 8-bit serial data
 void out_disp(unsigned char dd) {
     unsigned char i;
     for (i=0;i<8;i++) {
         if (dd&1) d_dat=1; else d_dat=0;
         d_clk=0;
         dd>>=1;
         d_clk=1;
     }
 }
 //Control the decimal point and flashing. Display data|0x040 means there is a decimal point; display data|0x80 means flashing.
 void out_displ(unsigned char dd) {
     if (dd>=0x80) {
         if (s001>flash_time) {out_disp(0xff);return;}
     }
     dd&=0x7f;
     if (dd>=0x40) {
         dd=un_disp[dd&0x3f]^pdp;
     } else dd=un_disp[dd];
     out_disp(dd);
 }

 unsigned int s001;    //闪烁时间参考
 void int_t0(void) interrupt 1 {
     unsigned char dd;
     TL0=TL0+30;TH0=0xfb;    //800
     time++;
     if ((++s001)>=800) s001=0;
     //    显示    
     if ((++dig)>4) dig=0;
     d_st=0;
     dd=d[dig+5];
     out_displ(dd);
     dd=d[dig];
     out_displ(dd);
     out_disp(un_dig[dig]);
     d_st=1;
 }
 void main(void) {
     unsigned char i;
     TMOD=0x1;
     TR0=ET0=1;
     EA=1;
     for (i=0;i<10;i++) d[i]=i;    //display test
     while (1) {}
 }