12864lcd.txt

12864液晶屏显示程序

＃i nclude <c8051f020.h>
＃i nclude <string.h>
void SYSCLK_Init (void);
void PORT_Init (void);
void wtdata(unsigned char wtd);
void wtcode(unsigned char wtc);
void ckbusy(void);
void clrlcd(void);
void lcd12864(void);
void wtzb(void);
void photodis(unsigned char *img);
unsigned char x,y,k;
unsigned int lcdy,lcdx,count1,count2,count3;
unsigned char code tutab[1024]={
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};

// 主程序

void main (void)
 {
    WDTCN = 0xde;
    WDTCN = 0xad;                        
    SYSCLK_Init ();                         
    PORT_Init ();                           
    lcd12864();
    //clrlcd();
    photodis(tutab);
    while(1){}
}

  void SYSCLK_Init (void)
{
   OSCICN = 0x05;                                                                                  
 }


void PORT_Init (void)
{

   XBR0     = 0x00;                       
   XBR2     = 0x40;
   P74OUT  = 0x0f;
                 
}

void ckbusy()
{ unsigned int x;
 for(x=0;x<500;x++);
}

void wtcode(unsigned char wtc)
{unsigned int x;
 ckbusy();
 if((wtc==0x01)||(wtc==0x11))for(x=0;x<1000;x++);
 P5=wtc;
 P4=0x1c;
 P4=0x18;
 }
//
void wtdata(unsigned char wtd)
{
 ckbusy();
 P5=wtd;
 P4=0x1d;
 P4=0x19;

}

//
void lcd12864(void)
{
   ckbusy();
   P4 &= 0xef;
   P4 |=0x18;    
   wtcode(0x02);  
   wtcode(0x06);  
   wtcode(0x0c);        
   wtcode(0x1e);
   wtcode(0x3b);       
   wtcode(0x3b);     
   wtcode(0x01);  

}
void wtzb(void) 
{ 
   wtcode(lcdy); 
   wtcode(lcdx); 
} 
//********显示图形子程序**************** 
void photodis(unsigned char *s) 
{ wtcode(0x34);
  count3=0X02; 
   lcdx=0X80; 
   for (;count3!=0;count3--) 
   { 
       lcdy=0X80; 
       count2=0X20;//32 
       for (;count2!=0;count2--) 
       { 
         count1=0X10;//16 
         wtzb(); 
         for (;count1!=0;count1--) 
          { 
            wtdata(*s++);             
          } 
         lcdy+=1; 
       } 
       lcdx=0X88; 
   } 
   wtcode(0x36);
}