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经典常用的单片机c程序
//16进制<->10进制互换程序
unsigned char d[10]; //用于显示的10位显示缓存
//========================================================
//16进制to10进制输出子程序:显示数据，起始位，结束位，有无小数点
//========================================================
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; //小数点控制，请看“串行LED数码管显示驱动程序”
j=7;
for (i=s;i
j--;
}
}
//把显示位5-9位的10进制数转换成为16进制数
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系列CPU编程器接收CPU程序*/
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#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=ACC^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*/
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＃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 hzk16\n");
exit(1);
}
clrscr();
while (1) {
data=(unsigned char *) malloc(33);
printf("please input:\n");
scanf("%s",dd); /*输入一个汉字*/
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];
/*转换，hzf16f在电脑的储存格式是以行为字节计算的，一般的lcd都采用以列为字节计算*/
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); /*输出0x00格式的16进制数*/
for (k=0;k<32;k+=8) {
for (j=0;j<8;j++) printf("0x%x,",b[j+k]);
printf("\n");
}
getch();
}
}
//按键扫描驱动程序
unsigned char key,key_h,kpush;
unsigned int key_l;
//按键连接到p1.0、p1.1、p1.2
void int_t0(void) interrupt 1 {
unsigned char dd,i;
TL0=TL0+30;TH0=0xfb; //800
/* 按键判别 */
if ((P1&0x7)==0x7) {
if ((key_l>30)&&(key_l<800)&&(key_h>30)) {
//释放按键，如果之前按键时间少于1秒，读入键值
key=kpush;
}
if ((++key_h)>200) key_h=200;
key_l=0;
if (key>=0x80) key=0;
//如果之前的按键为长按1秒，清除键值
} else {
kpush=P1&0x7;
key_l++;
if ((key_l>800)&&(key_h>30)) {
//如果按键超过1秒，键值加0x80标志长按键
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;
}
}
//串行驱动led显示，
//一个74hc595位移寄存器驱动三极管驱动led位，
//两个74hc595驱动led段，方式位5位x8段x2=10个数码管
//5分频，每次扫描时间位1.25ms
//定义特殊符号
#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
//显示段信息，不同led排列组合的段信息只需更改8个数值即可。
//因此，该定义具有通用性。
// 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
//串行送出的位信息，目前是10位led显示。
unsigned char code un_dig[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb};
//串行送出的短信息。
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; //移位时钟
sbit d_dat=P0^1; //移位数据
sbit d_st=P0^2; //移位锁定
unsigned char dig; //位扫描计数器
unsigned char d[10]; //显示缓冲
//送出8位串行数据
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;
}
}
//控制小数点和闪烁，显示数据|0x040表示有小数点；显示数据|0x80表示闪烁。
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) {}
}
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