yue1112212.c

本系统的控制部分是以89C51为核心

#include <at89x55.h>
#include <stdio.h>
#include <absacc.h>
#include <intrins.h> //此文件中有_nop_()空操作函数
#define uchar unsigned char
#define uint unsigned int
uchar biao1,biao2,biao3;//biao3高斯与磁通的转换,biao1是AD采样，biao2是量程转换
uchar biao4=0;//biao4单位转换标志
uchar biao5;//biao输入上、下限的标志位
uchar srjs1, srjs2;
uchar xueren=0;//计确定键的次数
uchar m,n;//定义输入上、下限的范围位置
unsigned long out; //存放1674测量值变量

unsigned char code num[]={"0123456789 :.-"};
unsigned char code idea1[]={"Gauss Meter"};
unsigned char code idea2[]={"Magnaflux Meter"};
unsigned char code idea3[]={"  磁信号检测仪  "};
unsigned char code idea4[]={"指导老师：张  胜"};
unsigned char code idea5[]={"设计者：  郑魏悦"};
unsigned char code idea6[]={"学  号：03440126"};
unsigned char code shape[]={"Shape"};
unsigned char code poles[]={"poles"};
unsigned char code work[]={"work"};
unsigned char code range[]={"range "};
/*************************************LCD液晶脚定义***************************/
sbit   lcdCS    =  P1^5;	//片选 高电平有效 单片LCD使用时可固定高电平
sbit   lcdSID   =  P1^6;	//数据
sbit   lcdSCLK  =  P1^7;	//时钟
/*********************************函数定义******************************/
//12864
void Write_char(bit start, unsigned char ddata);//写指令或数据
void Send_byte(unsigned char bbyte);//发送一个字节
void Delaynms(unsigned int di);//延时
void Lcd_init(void);//LCD初始化
void LCD_Write_string(unsigned char X,unsigned char Y,unsigned char *s);//中英文显示
void LCD_set_xy( unsigned char x, unsigned char y );//光标定位
void Clr_Scr();//清屏
void LCD_Write_number(unsigned char s);//数字显示 
/*************************主函数*****************************************************/
void main(void)//
{        lcdSID=0;
       	 Clr_Scr();//清屏
     	 Delaynms(1000);
         Lcd_init();//设置液晶显示器
         LCD_set_xy(0,0);        
         for(;;);
}
//***长延时***
void long_delay(void)
{
unsigned char i;
for (i=0;i<0x30;i++);
}

//***短延时***
void short_delay(void)
{
unsigned char i;
for (i=0;i<8;i++);
}
/******************************************************************************/
void Delaynms(unsigned int di) //延时
{
	unsigned int da,db;
 	for(da=0;da<di;da++)
   	for(db=0;db<10;db++);
}
/******************************初始化LCD************************************************/
void Lcd_init(void)
{
       Delaynms(10); //启动等待，等LCD讲入工作状态
  	lcdCS=1;
        //Write_char(0,0x82) ;
  	Write_char(0,0x30) ;  //8 位介面，基本指令集
  	Write_char(0,0x0c);  //显示打开，光标关，反白关
  	Write_char(0,0x01);  //清屏，将DDRAM的地址计数器归零
/*******************************************************/
        LCD_Write_string(1,0,"电压000V，");        
        LCD_Write_string(2,0,"范围180V至240V");
        LCD_Write_string(3,0,"电流0000mA，");
        LCD_Write_string(4,0,"范围0000至5000mA");
}

/*******************************写指令或数据***********************************/

void Write_char(bit start, unsigned char ddata) //
{
	unsigned char start_data,Hdata,Ldata;
  	if(start==0)
		start_data=0xf8;	 //写指令
    else
    	start_data=0xfa;  //写数据

  	Hdata=ddata&0xf0;		  //取高四位
  	Ldata=(ddata<<4)&0xf0;  //取低四位
  	Send_byte(start_data);	  //发送起始信号
  	Delaynms(5); //延时是必须的
  	Send_byte(Hdata);	      //发送高四位
  	Delaynms(1);  //延时是必须的
  	Send_byte(Ldata);		  //发送低四位
  	Delaynms(1);  //延时是必须的
}

/******************************************************************************/
void Send_byte(unsigned char bbyte) //发送一个字节
{
	unsigned char i;
 	for(i=0;i<8;i++)
   	{

   		lcdSCLK=0;			lcdSID=bbyte&0x80; //取出最高位
 		lcdSCLK=1;
   		bbyte<<=1; //左移
   	}
}


/******************************************************************************/
void Clr_Scr(void)//清屏函数
{
	Write_char(0,0x01);

}
/******************************************************************************/
void LCD_set_xy( unsigned char x, unsigned char y )
{	//设置LCD显示的起始位置，X为行，Y为列
    unsigned char address;
	switch(x)
	{
		case 0: address = 0x80 + y; break;
        case 1: address = 0x80 + y; break;
		case 2: address = 0x90 + y; break;
   	 	case 3: address = 0x88 + y; break;
		case 4: address = 0x98 + y; break;
		default:address = 0x80 + y; break;
	}
    Write_char(0, address);
}
/******************************************************************************/
void LCD_Write_number(unsigned char s)//	数字显示函数
{
	Write_char(1,num[s]);
	Delaynms(1);
}


/******************************************************************************/
void Delay(int num)//延时函数
{
	while(num--) ;
}

/******************************************************************************/
void LCD_Write_string(unsigned char X,unsigned char Y,unsigned char *s)
{	//	中英文字符串显示函数
    LCD_set_xy( X, Y );
    while (*s)
    {
         Write_char( 1, *s );
	   s ++;
         Delaynms(1);
   }
}