- #include<reg52.h>
- #include<intrins.h>
- typedef unsigned char u8;
- typedef unsigned int u16;
- sbit SRCLK=P3^6;
- sbit CLK=P3^5;
- sbit SER=P3^4;
- u8 ledheng[]={0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00};
- u8 ledlei[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
- void delay(u16 i)
- {
- while(i--);
- }
- void HC595senddat(u8 dat)
- {
- u8 a;
- SRCLK=0;
- CLK=0;
- for(a=0;a<8;a++)
- {
- SER=dat>>7;
- dat<<=1;
- SRCLK=1;
- SRCLK=0;
- }
- CLK=1;
- CLK=0;
- }
- void main()
- {
- u8 i;
- while(1)
- {
- P0=0x7f;
- for(i=0;i<8;i--)
- {
- P0=ledlei[i];
- HC595senddat(ledheng[i]);
- delay(100);
- HC595senddat(0x00);
- }
- }
- }
|
