led_display_scan.c

来自「采用华邦79E834+HT1380+24C04实现全自动抽水将置的源程式。如要疑」· C语言 代码 · 共 55 行

#include "all_func.h"
#include "display.h"
#include "main_func.h"
unsigned char row_scnt;
unsigned char col_scnt;
void hex_bcdDisplay(unsigned char hexs,unsigned char j) 
{
	unsigned char va;
	unsigned char i;
	unsigned char *p;
	unsigned char BCD_buffer[3];
    va = 100;                               
    for  (i=2;i>0;i--) 
    {
        BCD_buffer[i] = 0;                
        while ((hexs>=va)&&(va>9)) 
        {
            hexs -= va;                    
            BCD_buffer[i]++;              
        }
        va /= 10;                           
    }
    BCD_buffer[0]=hexs;
    p=&digTAB[0];
    for (i=0;i<3;i++) 
	{
		dis_buffer[i]=*(p+BCD_buffer[i]);
	}
	if ((BCD_buffer[2]==0)&&(BCD_buffer[1]==0))
	{
		i=3;
	}
	else if(BCD_buffer[2]==0)i=2;
	for (i;i>0;i--)
	{
		dis_buffer[4-i]=0;
	}
}
void 	display(unsigned char d_dat)
{
	unsigned char i=8;
	while(i)
	{	
		if(d_dat&0x80)LED_DA_PIN=1;
		else LED_DA_PIN=0;
		_nop_();
		LED_CLK_PIN=0;
		_nop_();
		LED_CLK_PIN=1;
		d_dat<<=1;
		i--;
	}
	LED_DA_PIN=1;

}