ltc1451.c

别人的C51菜单程序

#include <reg51.h>
#include <absacc.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define nop() _nop_()

//接口定义
#define lct1451_ad XBYTE[0x8100]
//宏定义
#define lct1451_cs_1(out) {out=out|0x04;lct1451_ad=out;}//cs=1;
#define lct1451_cs_0(out) {out=out&0xfb;lct1451_ad=out;}//cs=0;
#define lct1451_clk_1(out) {out=out|0x01;lct1451_ad=out;}//cs=1;
#define lct1451_clk_0(out) {out=out&0xfe;lct1451_ad=out;}//cs=0;
#define lct1451_din_1(out) {out=out|0x02;lct1451_ad=out;}//cs=1;
#define lct1451_din_0(out) {out=out&0xfd;lct1451_ad=out;}//cs=0;
void lct1451_transition(uint data value)
{
	uchar data out,i,temp;

	lct1451_cs_1(out);
	nop();
	nop();
	lct1451_cs_0(out);
	nop();
	for(i=12;i>0;i--)
	{
		lct1451_clk_0(out);
		temp=value>>i;
		if(CY)
		lct1451_din_1(out)
		else
		lct1451_din_0(out);
		nop();
		nop();
		lct1451_clk_1(out);
		nop();
		nop();
	}
	lct1451_cs_1(out);
	nop();
	nop();
			
}