74hc595驱动串行led显示精

1、74hc595驱动串行led显示串行驱动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#defi ne nul Oxf# defi ne qc Oxc # defi ne qb 0xb# defi ne q_ 0xa# defi ne q_ 0xd# defi ne q0xe # defi ne qp 0x10 #define qe 0x11# defi ne qj 0x12 # defi ne qn 0x13 # defi ne qf 0x14 #defin

2、e qa 0x15# defi ne qr 0x16 #define qd 0x17 #define qu 0x18 #define ql 0x19# defi ne qlb 0x1e# defi ne qh 0x1a# defi ne qwe n 0x1b# defi ne qt 0x1c# defi ne qla 0x1d#define qlc 0x1f #define qld 0x20 #define qle 0x21 # defi ne qlf 0x22#define qlg 0x23 # defi ne 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/

3、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 .d p 8 # defi ne pa 1 # defi ne pb 2#define pc 0x40 #define pd 0x20 #define pe 0x10 # defi ne pf 4#define pg 0x80 # defi ne pdp 8/# defi ne l0 pdp+pg# defi ne l5 pdp+pb+pe# defi ne l1 255-pf-pe# defi ne l2 pdp+pc+pf# defi ne l3 pdp+pc+pb#

4、defi ne l4 pdp+pa+pb+pd# defi ne 16 pdp+pe # defi ne 17 pdp+pc+pg+pb+pa # defi ne 18 pdp # defi ne 19 pdp+pb# defi ne la pdp+pa # defi ne lb pdp+pd+pe # defi ne Ic pdp+pg+pe+pf # defi ne Id pdp+pc+pd# defi ne le pdp+pe+pf # defi ne If pdp+pe+pf+pa # defi ne l_ 255-pg#defi ne Inul 255# defi ne II pdp

5、+pg+pd+pf+pe # defi ne Ip pdp+pa+pf # defi ne It pdp+pd+pe+pf # defi ne lr pdp+pe+pf+pg+pa# defi ne In pdp+pg+pa # defi ne Ih pdp+pd+pe+pa# defi ne ly pdp+pb+pd # defi ne lu pdp+pg+pd# defi ne l_ pdp+pg+pb+pc+pe+pf# defi ne ll_-pg #define l_1 255-pa# defi ne l_2 255-pa-pg # defi ne Ij 255-(pe+pf+pa#

6、define lie 255-pc #define lid 255-pd #define lie 255-pe #define llf 255-pf# defi ne llg 255-pg # defi ne lldp 255-pdp/串行送岀的位信息，目前是10位led显示un sig ned char code un_dig=0x7f 0 0 0 0 0 char code un_dis p =l0 l1 l2 l3 l4 l5 l6 l7 l8 l9 l_ lb lc l_ llnul lp le lj ln lf la lr ld lu ll lh lwen lt lla llb ll

7、e lld lle llf llg lldp ln ul;sbit d_clk= PiO; / 移位时钟sbit d_dat二P0八1; / 移位数据sbit d_st二卩0八2; /移位锁定 unsigned char dig; /位扫描计数器unsigned char d10;/ 显示缓冲/送岀8位串行数据 void out_dis p(un sig ned char dd un sig ned char i;for (i=0;i=1;d_clk=1;/控制小数点和闪烁，显示数据10x040表示有小数点；显示数据10x80表示闪烁 void out_dis pl( un sig ned c

8、har dd if (dd=0x80 if (s001flash_time out_dis p(0xff;retur n; dd&=0x7f;if (dd=0x40 dd=un_dis p dd&0x3fF pdp; else dd=un _dis pdd;out_dis p(dd;un sig ned int s001; 闪烁时间参考void in t_t0(void in terr upt 1 un sig ned char dd;TL0二TL0+30;TH0=0xfb; /800 time+;if (+s001=800 s001=0;/显示 if (+dig4 dig=0;d_st=0;dd=ddig+5;out_dis pl(dd;dd=ddig;out_dis pl(dd;out_d