led6p.c

来自「不少单片机C代码」· C语言 代码 · 共 35 行

 #include <absacc.h>
 #include <reg51.h>
 #define uchar  unsigned char
 #define COM8155 XBYTE[0xfff0]
 #define PA8155  XBYTE[0xfff1]
 #define PB8155  XBYTE[0xfff2]
 #define PC8155  XBYTE[0xfff3]

 uchar idata dis_buf[6]={2,4,6,8,10,12};
 uchar code  table[18]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
			0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40,0x00};

 void  dl_ms(uchar d);

 void  display(uchar idata *p)
 { 
   uchar sel,i;
   COM8155=0x07;
   sel=0x01;
   for(i=0;i<6;i++) {
     PB8155=table[*p];
     PA8155=sel;
     dl_ms(1);
     p--;
     sel=sel<<1;
   }
 }

 void  main(void)
 { 
   display(dis_buf+5);
 }