串行驱动LED显示程序

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

#definenul0xf

#defineqc0xc

#defineqb0xb

#defineq_0xa

#defineq__0xd

#defineq___0xe

#defineqp0x10

#defineqe0x11

#defineqj0x12

#defineqn0x13

#defineqf0x14

#defineqa0x15

#defineqr0x16

#defineqd0x17

#definequ0x18

#defineql0x19

#defineqh0x1a

#defineqwen0x1b

#defineqt0x1c

#defineqla0x1d

#defineqlb0x1e

#defineqlc0x1f

#defineqld0x20

#defineqle0x21

#defineqlf0x22

#defineqlg0x23

#defineqldp0x24

//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

//-d20

//|c40|e10

//-g80

//|b2|f4

//_a1.dp8

#definepa1

#definepb2

#definepc0x40

#definepd0x20

#definepe0x10

#definepf4

#definepg0x80

#definepdp8

//--------------

#definel0pdp+pg

#definel1255-pf-pe

#definel2pdp+pc+pf

#definel3pdp+pc+pb

#definel4pdp+pa+pb+pd

#definel5pdp+pb+pe

#definel6pdp+pe

#definel7pdp+pc+pg+pb+pa

#definel8pdp

#definel9pdp+pb

#definelapdp+pa

#definelbpdp+pd+pe

#definelcpdp+pg+pe+pf

#defineldpdp+pc+pd

#definelepdp+pe+pf

#definelfpdp+pe+pf+pa

#definel_255-pg

#definelnul255

#definellpdp+pg+pd+pf+pe

#definelppdp+pa+pf

#defineltpdp+pd+pe+pf

#definelrpdp+pe+pf+pg+pa

#definelnpdp+pg+pa

#definelhpdp+pd+pe+pa

#definelypdp+pb+pd

#definelupdp+pg+pd

#definel__pdp+pg+pb+pc+pe+pf

#definel___l__-pg

#definel_1255-pa

#definel_2255-pa-pg

#definelj255-(pe+pf+pa)

#definelwen255-(pd+pe+pg+pb)

#definelall0

#definella255-pa

#definellb255-pb

#definellc255-pc

#definelld255-pd

#definelle255-pe

#definellf255-pf

#definellg255-pg

#definelldp255-pdp

//串行送出的位信息，目前是10位led显示。

unsignedcharcodeun_dig[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb};

//串行送出的短信息。

unsignedcharcodeun_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};

sbitd_clk=P0^0;//移位时钟

sbitd_dat=P0^1;//移位数据

sbitd_st=P0^2;//移位锁定

unsignedchardig;//位扫描计数器

unsignedchard[10];//显示缓冲

//送出8位串行数据

voidout_disp(unsignedchardd){

unsignedchari;

for(i=0;i<8;i++){

if(dd&1)d_dat=1;elsed_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。

voidout_displ(unsignedchardd){

if(dd>=0x80){

if(s001>flash_time){out_disp(0xff);return;}

}

dd&=0x7f;

if(dd>=0x40){

dd=un_disp[dd&0x3f]^pdp;

}elsedd=un_disp[dd];

out_disp(dd);

}

unsignedints001;//闪烁时间参考

voidint_t0(void)interrupt1{

unsignedchardd;

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;

}

voidmain(void){

unsignedchari;

TMOD=0x1;

TR0=ET0=1;

EA=1;

for(i=0;i<10;i++)d[i]=i;//displaytest

while(1){}

}