yue1112212.c

本系统的控制部分是以89C51为核心

//#include <reg51.h>
#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 "};

uchar sz1[8] ; //AD转换数据暂存
uchar sz2[8];   //上限输入数据暂存
uchar sz3[8];    //下限输入数据暂存
sbit P20=P2^0;
sbit P21=P2^1;
sbit P22=P2^2;
/*************************************HD_7279引脚定义************************/

sbit     hd_7279cs=P1^3;
sbit     hd_7279clk=P1^4;
sbit     hd_7279data=P1^5;
sbit     hd_7279key=P3^3;
//sbit hd_7279key=P1^6; // key 连接于P1.3
/*************************************AD1674引脚定义************************/
sbit AD1674RC=P2^5;
sbit AD1674A0=P2^6;
sbit AD1674TST=P3^2;
sbit AD1674CS=P2^7;
/*************************************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
//sbit   lcdPSB   =  P2^3;
//sbit   lcdRST  =  P2^4;

/*********************************函数定义******************************/
//7279
void hd7279send_byte(uchar out_byte);
void keyin(void);
void ajcl(js);
void axszj(uchar js);
void long_delay(void);
void short_delay(void);
//12864
void Write_char(bit start, unsigned char ddata);
void Send_byte(unsigned char bbyte);
void Delaynms(unsigned int di);
void Lcd_init(void);
void LCD_Write_string(unsigned char X,unsigned char Y,unsigned char *s);
void LCD_set_xy( unsigned char x, unsigned char y );
//AD1674
 void qd1674(void);
 //
void makerang(void) ;
void disp(void);
void panluan(void);



/*************************写路一字节************************************/
void hd7279send_byte(uchar out_byte)
{ uchar j;
  hd_7279cs=0;
  long_delay();   /*50uS引时*/
  for(j=8;j>0;j--)
   { if(out_byte & 0x80)
     {hd_7279data=1;}
	 else
	 {hd_7279data=0;}
   	  hd_7279clk=1;
	  short_delay();
	  hd_7279clk=0;
	  short_delay();
	  out_byte=out_byte<<1;
   }
   hd_7279data=0;
}
/**************************读一字节**********************************/
uchar hd7279receive_byte(void)
{ uchar j,in_byte;
  hd_7279data=1;
  long_delay();   /*50uS引时*/
  for(j=8;j>0;j--)
   { hd_7279clk=1;
     short_delay();
	 in_byte=in_byte<<1;
     if(hd_7279data)
     {in_byte=in_byte|0x01;}
   	  hd_7279clk=0;
	  short_delay();
   }
   hd_7279data=0;
   return (in_byte);
}

//***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++);
}
 /*********************************AD1674转换****************************************/
 void qd1674(void)
{
  unsigned char out1,out2;

  AD1674CS=0;
  AD1674RC=0;
  AD1674A0=1;

  /*测忙*/
  loop:
  if(AD1674TST)goto loop;

  /*读高8位*/

  AD1674RC=1;
  AD1674A0=0;
  out1=P0;
  out=out1&0x0f  ;
  out<<=8;
  out+=out1;


  /*读低4位*/

  AD1674RC=1;
  AD1674A0=1;
  out2=P0;
  out2=out2&0x0f;
  out+=out2;
  AD1674CS=1;
}
/******************************初始化LCD************************************************/
void Lcd_init(void)
{
       Delaynms(10); //启动等待，等LCM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,idea3);
        LCD_Write_string(2,0,idea4);
        LCD_Write_string(3,0,idea5);
        LCD_Write_string(4,0,idea6);
}

/*******************************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);
   }
}

 /****************************************************************************/
void Lcd_Mark1(void)//在预定的位置上写入汉字
{
	Clr_Scr();//清屏
	LCD_Write_string(1,0,idea1);//标题-高斯计-
	LCD_Write_string(2,0,"B:          ");
	LCD_Write_string(3,0,range);//
	LCD_Write_string(3,4,work);//
        LCD_Write_string(3,6," off") ;

}
 void Lcd_Mark2(void)//在预定的位置上写入汉字
{
	Clr_Scr();//清屏
	LCD_Write_string(1,0,idea2);//标题-磁通计-
        LCD_Write_string(2,0,shape);
	LCD_Write_string(2,4,poles);//
	LCD_Write_string(3,0,"Q:           ");
	LCD_Write_string(4,0,range);//
	LCD_Write_string(4,4,work);//
        LCD_Write_string(4,6," off") ;

}
/***************************按键中断**********************************/
void int1_(void) interrupt 2
{ uchar js; uchar biao;
  hd7279send_byte(0xa4);
  hd7279send_byte(0x15);
  js=hd7279receive_byte();
  hd_7279cs=1;
  if(js==11)
     {
	biao3=~biao3; //磁通计与高斯计的转换
        Clr_Scr();//清屏
     	Delaynms(1000);
	if (biao3==0)
            { Lcd_Mark1( );}
	else
            {  Lcd_Mark2( );}
       	Delaynms(1000);
        biao=1;
	 }
  if(biao)
     {  ajcl(js);}
}

/********************************按键处理******************************************/
void ajcl(js)
{
  switch(js)
   {  case 0 :  axszj(0);
      break;
      case 1 :  axszj(1);
       break;
      case 2 : axszj(2);
       break;
      case 3 : axszj(3);
      break;
      case 4 : axszj(4);
      break;
      case 5 : axszj(5);
      break;
      case 6 : axszj(6);
      break;
      case 7 : axszj(7);
       break;
      case 8 : axszj(8);
      break;
      case 9 : axszj(9);
       break;
      case 10: axszj(12);
       break;
      case 12: if(biao3==0)
               {
               if(biao1==1)       //测量开始关闭按键
	          { biao1=0;
		    LCD_Write_string(3,6," off") ;
                  }
	        else
	          { biao1=1;
		    LCD_Write_string(3,6," on ") ;
                  } //
                }