164display.c

silicon lab 单片机C8051F020 控制74LS164的程序

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#include "164display.h"
#include <C8051F320.h>
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sbit 		SDA_164 = P1^0;                       
sbit 		SCL_164 = P1^1; 

static unsigned char const  code  LED8[]={0X21,0XF9,0X45,0X51,0X99,0X13,0X03,0XF1,0X01,0X11};
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void Led_Display_Init()
{
	P1MDOUT |= 3;	
	XBR1 |= 0x40;
}
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 void Led_Display (unsigned char led_num)
{
	unsigned char  led_i,led_data;
	Led_Display_Init();
	led_data = LED8[led_num];
	//led_data = led_num;
	for (led_i=8;led_i>0;led_i--)
	{		
		SDA_164 = (bit)(led_data&1);				
		
		SCL_164 = 1;
		
		SCL_164 = 0;
		
		led_data = led_data>>1;
	}	
}


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