x5045.c

一个LCD菜单绘图程序

#include <stdio.h>                       /* standard I/O .h-file */
#include <reg51f.h>
#include "x5045.h"

sbit CS_DOG = P1^3;           /*X25045片选*/
sbit DOG_DATA = P1^4;         /*数据输出/入口*/
sbit DOG_CLK = P1^2;			/*时钟驱动口*/


void delay_dog()
{ unsigned char i;
  for(i=0;i<10;i++);
}
/******************************
	向x5045中写入数据
******************************/
void  init5045()
{  	CS_DOG=1;
	DOG_DATA=1;
	DOG_CLK=0;
	DOG_DATA=0;
}
	
void  X5045Input(unsigned char tt)
{
	unsigned char i = 8;
	while(i--)
	{
 		DOG_CLK = 0;
		if( tt&0x80 )
  			DOG_DATA = 1;
		else
  			DOG_DATA = 0;
		DOG_CLK = 1;
		tt <<= 1;
	}
}
/******************************
	x5045写使能
******************************/

void X5045EnWrite(void)
{  
	CS_DOG = 0;
   	X5045Input(0x06);
   	CS_DOG = 1;
}
/******************************
	写x5045状态
******************************/
void X5045WriteStatus(unsigned char status)
{  	
	X5045EnWrite();
   	CS_DOG = 0;
   	X5045Input(0x01);
   	X5045Input(status);
   	CS_DOG = 1;
   }
void watchdog(void)
{
	CS_DOG=1;
	delay_dog();
	CS_DOG=0;
	delay_dog();
	CS_DOG=1;
	delay_dog();
	CS_DOG=0;
}