display.c

单片机通过I2C总线控制24c02 其中包括 24C02初始化 24C02读写等 STC单片机初始化 读写等

#include <reg52.h>
#define LCD_Data P0		//LCD数据与控制线

sbit LCD_RS=P2^2;		//液晶控制  
sbit LCD_RW=P2^1;	 	//液晶写入
sbit LCD_E=P2^0;	  	//液晶使能

extern void Delay(long int time);
void WriteCommandLCD(unsigned char WCLCD);
void WriteDataLCD(unsigned char WDLCD);

/*******************************以下是显示驱动******************************/

void LCDInit(void) //LCM初始化			 
{
	LCD_Data = 0x00;
	WriteCommandLCD(0x38);  
	Delay(50); 														   
	WriteCommandLCD(0x38); //显示模式设置,开始要求每次检测忙信号		   
	WriteCommandLCD(0x08); //关闭显示				 	 
	WriteCommandLCD(0x06); // 显示光标移动设置	  	  		 
	WriteCommandLCD(0x01); //显示清屏	 
	WriteCommandLCD(0x0f); // 显示开及光标设置	 	   
}

void WriteCommandLCD(unsigned char WCLCD) 		  
{
	Delay(50);
	LCD_Data = WCLCD;
	LCD_RS = 0;
	LCD_RW = 0; 
	LCD_E = 1; 
	Delay(50);   
	LCD_E = 0; 
}

//读状态	 

void WriteDataLCD(unsigned char WDLCD)
{
	Delay(50);
	LCD_Data = WDLCD;
	LCD_RS = 1;
	LCD_RW = 0;
	
	LCD_E = 1; //-----！！！问题一直出在这里！！！		   
	Delay(50);
	LCD_E = 0; 
}

void charadds(unsigned long a) 
{
   unsigned long c,p=0;
   c=a/1000000000;
   if(c!=0)
   {
   		WriteDataLCD(c+0x30);
    	p=1;
    }
    c=(a%1000000000)/100000000;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }
    c=(a%100000000)/10000000;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }
    c=(a%10000000)/1000000;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }
    c=(a%1000000)/100000;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }
    c=(a%100000)/10000;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }               
    c=(a%10000)/1000;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }                
    c=(a%1000)/100;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
	    p=1;
    }
    c=(a%100)/10;
    if(c!=0 || p==1)
    {
		WriteDataLCD(c+0x30);
    }            
    c=a%10+0x30;
    WriteDataLCD(c);    
}