62256tiao.i

使用OKI公司8255A控制62256RAM程序,并使用8803液晶显示

/************************************************************************
该程序是所有的并行器件挂在PC口上面，由8255负责给62256写地址
该程序是测试单片机最小开发系统的小工具，里面包含8255，62256，串口，液晶
，还能将62256的数据送到PC机，对AD进行采样等，常用器件及常用调试工具和方法
**************************************************************************/
// CodeVisionAVR C Compiler
// (C) 1998-2001 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega16


#pragma used+
sfrb TWBR=0;
sfrb TWSR=1;
sfrb TWAR=2;
sfrb TWDR=3;
sfrb ADCL=4;
sfrb ADCH=5;
sfrw ADCW=4;      // 16 bit access
sfrb ADCSRA=6;
sfrb ADMUX=7;
sfrb ACSR=8;
sfrb UBRRL=9;
sfrb UCSRB=0xa;
sfrb UCSRA=0xb;
sfrb UDR=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   // 16 bit access
sfrb UBRRH=0x20;
sfrb UCSRC=0X20;
sfrb WDTCR=0x21;
sfrb ASSR=0x22;
sfrb OCR2=0x23;
sfrb TCNT2=0x24;
sfrb TCCR2=0x25;
sfrb ICR1L=0x26;
sfrb ICR1H=0x27;
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  // 16 bit access
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  // 16 bit access
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  // 16 bit access
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb SFIOR=0x30;
sfrb OSCCAL=0x31;
sfrb OCDR=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb TWCR=0x36;
sfrb SPMCR=0x37;
sfrb TIFR=0x38;
sfrb TIMSK=0x39;
sfrb GIFR=0x3a;
sfrb GICR=0x3b;
sfrb OCR0=0X3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-

// Interrupt vectors definitions



// CodeVisionAVR C Compiler
// (C) 1998-2000 Pavel Haiduc, HP InfoTech S.R.L.


#pragma used+

void delay_us(unsigned int n);
void delay_ms(unsigned int n);

#pragma used-

void rest8255(unsigned char state)
{DDRC=0xff;DDRB.5=1;DDRB.6 =1;DDRB.4=1;DDRB.1=1;DDRB.0=1;
 PORTC=0xff;
 PORTB.4=0;          //片选上
 PORTB.5=1;          PORTB.6=1;//写入寄存器
 PORTB.0=0;
 PORTC=state;
 PORTB.0=1;
 PORTB.4=1;
 }
void send8255(unsigned char data,unsigned char direct) 
{DDRC=0xff;
 PORTB.4=0;
 switch(direct)
 {case 0: PORTB.5=0;PORTB.6=0;break;
  case 1: PORTB.5=0;PORTB.6=1;break;
  case 2: PORTB.5=1;PORTB.6=0;break;
  case 3: PORTB.5=1;PORTB.6=1;break;
  } 
 PORTB.0=0;
 PORTC=data;
 PORTB.0=1;
 PORTB.4=1;  
 }
void send_a(unsigned char data)
{DDRC=0xff;
 PORTB.4=0;
 PORTB.5=0;PORTB.6=0; 
 PORTB.0=0;
 PORTC=data;
 PORTB.0=1;
 PORTB.4=1;
 }
void send_b(unsigned char data)
{DDRC=0xff;
 PORTB.4=0;
 PORTB.5=0;PORTB.6=1; 
 PORTB.0=0;
 PORTC=data;
 PORTB.0=1;
 PORTB.4=1;
 } 
void send_c(unsigned char data)
{DDRC=0xff;
 PORTB.4=0;
 PORTB.5=1;PORTB.6=0; 
 PORTB.0=0;
 PORTC=data;
 PORTB.0=1;
 PORTB.4=1;
 }  
void send_r(unsigned char data)
{DDRC=0xff;
 PORTB.4=0;
 PORTB.5=1;PORTB.6=1; 
 PORTB.0=0;
 PORTC=data;
 PORTB.0=1;
 PORTB.4=1;
 }   
//#include<mega16.h>
//#include<delay.h >
void send(unsigned char w);
void xianshi(long w,unsigned char weishu); 
flash unsigned char  Led_tab[2][23]={              /*共阳数码管 显示段笔划 abcdefgh; 0=亮 *//* 0,1,2,3,4,5,6,7 */	 /* 8,9,A,b,C,d,E,F */
     0x03,0x9F,0x25,0x0D,0x99,0x49,0x41,0x1F,   
     0x01,0x09,0x11,0xC1,0x63,0x85,0x61,0x71,   
     0xFF,0x31,0x91,0xE3,0xFD,0x6D,0xD5,0x02,
     0x9E,0x24,0x0C,0x98,0x48,0x40,0x1E,0x00,
     0x08,0x10,0xC0,0x62,0x84,0x60,0x70,0x02,
     0x30,0x90,0xE2,0xFC,0x6E,0xD4};  
 
void send(unsigned char w)
{unsigned char i;
 for(i=0;i<8;i++)
 {PORTD.6 =0;
  PORTD.7=w&1; 
  PORTD.6 =1;
  w=w>>1;
  }
 }
void xianshi(long w,unsigned char weishu)
{unsigned char i;
 unsigned char k;
 bit flag=0;
 if(w<0)
  {w=-w;
   flag=1;
   }
 DDRD.6 =1;              
 DDRD.7=1;
 for(i=0;i<8;i++)
  {
  if(w!=0)
  {k=Led_tab[0][w%10];
   if(i==weishu)k=Led_tab[1][w%10];
   }
  else
    {if(flag)
      {k=253;
       }
     if(i==weishu)k=Led_tab[1][w%10]; 
     else
       if(i<weishu)k=0x03;
        else 
         {if(!flag)
           {k=0xff;
            }
           if((i==(weishu+1))&&flag)k=253; 
           flag=0; 
          }
        
     }
   send(k);
   w=w/10;
   }
 } 
void writeram(unsigned int address,unsigned char data)
{unsigned char temp=0;
 DDRA.7=1;
 PORTA.7=1;
 temp=address;
 send_a(temp);
 address=address>>8;
 temp=address;
 send_b(temp);
 PORTC=data;  
 
 PORTA.7=0;//片选上62256   
 #asm("NOP")
 PORTB.0=0;
 PORTB.0=1;
 #asm("NOP")
 PORTA.7=1; 
 }
unsigned char readram(unsigned int address)
{unsigned char temp=0;
 //CS_ram_en=1;
 PORTA.7=1;
 temp=address;
 send_a(temp);
 address=address>>8;
 temp=address;
 send_b(temp);
 PORTA.7=0;//片选上62256  
 DDRC=0x00;
 PORTC=0x00;
 PORTB.1=0; 
 #asm
 NOP
 NOP
 #endasm
 temp=PINC;
 PORTB.1=1; 
 PORTA.7=1; 
 return temp; 
 } 
// CodeVisionAVR C Compiler
// (C) 1998-2001 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega16






// CodeVisionAVR C Compiler
// (C) 1998-2000 Pavel Haiduc, HP InfoTech S.R.L.





/*
CodeVisionAVR C Compiler
Prototypes for mathematical functions

Portions (C) 1998-2001 Pavel Haiduc, HP InfoTech S.R.L.
Portions (C) 2000-2001 Yuri G. Salov
*/



#pragma used+

unsigned char cabs(signed char x);
unsigned int abs(int x);
unsigned long labs(long x);
float fabs(float x);
signed char cmax(signed char a,signed char b);
int max(int a,int b);
long lmax(long a,long b);
float fmax(float a,float b);
signed char cmin(signed char a,signed char b);
int min(int a,int b);
long lmin(long a,long b);
float fmin(float a,float b);
signed char csign(signed char x);
signed char sign(int x);
signed char lsign(long x);
signed char fsign(float x);
unsigned char isqrt(unsigned int x);
unsigned int lsqrt(unsigned long x);
float sqrt(float x);
float floor(float x);
float ceil(float x);
float fmod(float x,float y);
float modf(float x,float *ipart);
float ldexp(float x,int expon);
float frexp(float x,int *expon);
float exp(float x);
float log(float x);
float log10(float x);
float pow(float x,float y);
float sin(float x);
float cos(float x);
float tan(float x);
float sinh(float x);
float cosh(float x);
float tanh(float x);
float asin(float x);
float acos(float x);
float atan(float x);
float atan2(float y,float x);

#pragma used-
#pragma library math.lib



//--------------------------------------------

//****************************************************
//送一帧数据
void Post_Msg(unsigned char Msg)
{
 DDRC           =0xFF;
 PORTC            =Msg;                          //输出数据
 PORTA.2          =1;                                //置数据通道  
 PORTB.0          =0;                                //选中外设                  
 PORTA.0          =0;                                //外地址写数据开始   
 PORTA.0          =1;                                //写结束
 PORTB.0          =1;                                //关外设
 delay_us(5);
}


void Post_Com(unsigned char Com)
{
   DDRC           =0xFF;  
   PORTC            =Com;                          //输出数据 
   PORTA.2          =0;                                //置命令通道
   PORTB.0          =0;                                //选中外设   
   PORTA.0          =0;                                //外地址写数据开始
   PORTA.0          =1;                                //写结束    
   PORTB.0          =1;                                //关外设
   delay_us(5);
}


//*************************************
//送一帧命令
//*************************************
void Send_Com(unsigned char Addr,unsigned char Data)
{ 
  Post_Com(Addr);
  Post_Com(Data);
}
//*************************************************


void Send_Data(unsigned char X0,unsigned char Y0,unsigned char Data,unsigned char Pos)
{
   Send_Com(0x12,0xB1+Pos);
   Send_Com(0x60,X0);
   Send_Com(0x70,Y0*8);
   Post_Msg(Data);
}


//========================================
//读一帧数据
//========================================
unsigned char Read_Reg(unsigned char Addr)
{
   unsigned char Temp; 
   Post_Com(Addr);
   PORTC            =0xFF;
   DDRC           =0x00;  
   PORTA.2          =0;       
   PORTB.0          =0;      
   PORTA.1          =0; 
   delay_us(1);  
   Temp=PINC          ;   
   PORTA.1          =1;       
   PORTB.0          =1;              
   delay_us(10);
   DDRC           =0xFF; 
   return(Temp);   
}


unsigned char Read_Data(unsigned char X0,unsigned char Y0,unsigned char N)
{
    unsigned char Temp;
    if(N)Send_Com(0x12,0xB2);           //存取文本图层
    else   Send_Com(0x12,0xB1);        //存取图形图层              
    Send_Com(0x60,X0);
    Send_Com(0x70,Y0);
    PORTC            =0xFF;
    DDRC           =0x00;   
    PORTA.2          =1;
    PORTB.0          =0;  
    PORTA.1          =0; 
    delay_us(1);
    Temp=PINC          ;   
    PORTA.1          =1;
    PORTB.0          =1;
    DDRC           =0xFF; 
    return(Temp);  
}


void reset_lcd()
{  
   DDRC           =0xFF;                         //输出允许
   PORTA.0          =1;
   PORTA.2          =1;
   PORTA.1          =1;
   PORTB.0          =0;
     
   PORTB.4=0;     
   delay_ms(500);   
   PORTB.4=1;
  
   Send_Com(0x00,0xCD);                     //WLCR: 电源正常模式,进入文本模式,屏幕开启,屏幕不闪烁,正向显示
   Send_Com(0x01,0x03);                     //MISC: CLKOUT禁止,BUSY高电平触发,12MHz频率      
   Send_Com(0x02,0x00);                     //APSR: ROM/RAM30ns读取速度,禁止ROM直读,开机滚动复位禁止
   Send_Com(0x03,0x80);                     //ADSR: 显示数据正序,水平,垂直卷动效显禁止
   Send_Com(0x10,0x2F);                     //WCCR: 读DDRAM定地址,写自加,中英文对齐,正向存储,字体正常粗细,光标ON,闪烁
   Send_Com(0x11,0x10);                     //DWLR:  光标高度2Px,行距设定2Px
   Send_Com(0x12,0xB3);                     //MAMR: 图形方式光标先垂直后水平移动,两层或显示,图层1/2运行,灰度显示   
   Send_Com(0x20,0x1D);                     //AWRR: 设定右边视窗位置
   Send_Com(0x21,0x1D);                     //DWRR: 设定右边显示位置(=240/8-1)
   Send_Com(0x30,0x7F);                     //AWBR: 设定底部视窗位置
   Send_Com(0x31,0x80);                     //DWBR: 设定底部显示位置(=128-1)
   Send_Com(0x40,0x00);                     //AWLR: 设定左边视窗位置
   Send_Com(0x41,0x00);                     //DWLR: 设定左边显示位置(0x00)
   Send_Com(0x50,0x00);                     //AWTR: 设定上部视窗位置
   Send_Com(0x51,0x00);                     //DWTR: 设定上部显示位置(0x00)
   Send_Com(0x60,0x00);                     //CPXR:  设定光标X坐标
   //Send_Com(0x61,0x00);                     //BGSG: 显示区X位置
   Send_Com(0x70,0x00);                     //CPYR:  设定光标Y坐标
   Send_Com(0x71,0x00);                     //BGCM: 设定水平移动模式下移动的起始X位置
   Send_Com(0x72,0xEF);                     //EDCM: 设定水平移动模式下移动终止X位置
   Send_Com(0x80,0x60);                     //BTMR: 设置光标闪烁频率 
   Send_Com(0x81,0x40);                     //FRCA: 通用寄存器,设置为0x40(must do that when reset the lcd)
   Send_Com(0x90,0x0F);                     //SCCR: 设定XCL周期,即刷新频率,数值越大,刷新越慢
   Send_Com(0xF0,0xA0);                     //
   Send_Com(0xF1,0x0F);                     //字体大小置
   
} 


//===============================================================
//--清屏函数，将文本层和图形层全清空
void clear()
{
  Send_Com(0x12,0xB3);
  Send_Com(0xE0,0x00);
  Send_Com(0xF0,0xA8);
  delay_ms(100);
}
//===============================================================

/*************************************************************************** 
x表示的是行(一个象点)，y表示的是列(一个字符)，
daxiao的高4位表示纵向放大倍数，低4位表示横向放大的倍数  
daxiao表示的是字符放大系数，高四位表示横向放大，低四位表示纵向放大倍数
如果不放大的话就默认送一个数0
1表示1倍，2表示2倍，3表示3倍，4表示4倍
*p表示的是需要送过来显示的汉字字符串
***************************************************************************/  
void chinese1(unsigned char X0,unsigned char Y0,unsigned char daxiao,flash unsigned char *p)
{unsigned char temp=0;
 temp=daxiao-0x11;//转化为内部的实际寄存器值
 daxiao=temp;
 daxiao=daxiao<<6;
 temp|=0x0f;
 temp|=daxiao;
 Send_Com(0xf1,temp);//设定汉字的大小，0倍大小16*16汉字
 Send_Com(0xf0,0xa2);//选择字型ROM转换电路使能，选择简体国标库，ASCII二区
 Send_Com(0x60,Y0);
 Send_Com(0x70,X0*16);
 while((*p)>0)
 {
  Post_Msg(*p);
  delay_us(50);
  p++;
  }
 } 
void chinese(unsigned char X0,unsigned char Y0,flash unsigned char *p)
{
 Send_Com(0xf1,0x0f);//设定汉字的大小，0倍大小16*16汉字
 Send_Com(0xf0,0xa2);//选择字型ROM转换电路使能，选择简体国标库，ASCII二区
 Send_Com(0x60,Y0);
 Send_Com(0x70,X0*16);
 while((*p)>0)
 {
  Post_Msg(*p);
  delay_us(50);
  p++;
  }
 }  
 
/**************************************************************************
x表示行坐标，每一个象点表示一行
y表示列坐标，每一个字符表示一列，自动与字符大小匹配
daxiao表示的是字符放大系数，高四位表示横向放大，低四位表示纵向放大倍数
如果不放大的话就默认送一个数0
p表示需要显示的字符的ASCII码，所有的显示均使用标准ASCII码
*************************************************************************/ 
void word1(unsigned char x,unsigned char y,unsigned char daxiao,unsigned char p)