1602c8051f.c

c8051f020控制1602正确显示程序

#include <c8051f020.h>                 

unsigned long x;    
//unsigned char xdata Netdata[16]={0x77,0x77,0x77,0x2e,0x78,0x68,0x6c,0x2e,0x63,0x6f,
 //                               0x6d,0x2e,0x63,0x6e};    
unsigned char xdata Netdata[16]="zhangliang      ";                               
                               
                            
unsigned char xdata NCDdata[17]={0x20,0x20,0x42,0x54,0x20,0x46,0x30,0x32,0x30,0x20,
                                 0x56,0x31,0x2e,0x30,0x20,0x20};
                                                              
unsigned char *lcdpoint;       
unsigned char lcd_data_count;

void SYSCLK_Init (void);
void PORT_Init (void);
void LCD_Init(void);

void main (void)
 {
 static unsigned char data1;
    WDTCN = 0xde;
    WDTCN = 0xad;                      

    SYSCLK_Init ();                
                                          
    PORT_Init ();                         

  while(1){
  LCD_Init();                       
     P2  = 0xA0;//10100000 RS="1"; 

                                    
     for(x=0;x<5000;x++);
     lcdpoint=&NCDdata;    
     for(lcd_data_count=14;lcd_data_count>0;lcd_data_count--)
     { 
      data1=*lcdpoint;     
      P3 = data1;      

   P2 = 0X20;//00100000 RS="1";RW=0;E=0;
         P2 = 0XA0;//10100000 RS="1";RW=0;E=1;
                       lcdpoint++;
   for(x=0;x<5000;x++);  //delay
  }
  P2 = 0X80; //10000000  RS="0";RW=0;E=1;
     P3 = 0xc0; //11000000  RS="0";RW=1;E=1;
     P2 = 0x00; //00000000  RS="0";RW=0;E=0;  
     P2 = 0x80; //10000000  RS="0";RW=0;E=1;  
     for(x=0;x<1000;x++);
     lcdpoint=&Netdata;
     for(lcd_data_count=14;lcd_data_count>0;lcd_data_count--)
     { 
      data1=*lcdpoint;
      P3 = data1; 

      P2 = 0xA0; //10100000 RS="1"; RW="0"; E="1";
                    
            P2 = 0x20; //00100000 RS="1";RW=0;E=0;

         lcdpoint++;
   for(x=0;x<5000;x++);
  }
 }
}

 

  void SYSCLK_Init (void)
{
 //  int i;                              // delay counter

   OSCXCN = 0x67;                      // start external oscillator with
                                       // 22.1184MHz crystal

//  for (i=0; i < 256; i++) ;           // Wait for osc. to start up

 // while (!(OSCXCN & 0x80)) ;          // Wait for crystal osc. to settle

 // OSCICN = 0x08;    

    OSCICN = 0x05;                                                                      
 }

 

void PORT_Init (void)
{

   XBR0     = 0x00;             
   XBR2     = 0x40;
   P2MDOUT  = 0xe0;                  
}



void LCD_Init(void)
{
   P2 = 0X80; //10000000  RS="0";RW=0;E=1;
   for(x=0;x<50000;x++);
   //P7 = 0x30;   
   P3 = 0x38;    
   P2 = 0X00;//0x08;
   P2 = 0X80;//0x09; 
   for(x=0;x<1000;x++);
   P3 = 0x0e;
   P2 = 0x00;
   P2 = 0x80;
   for(x=0;x<1000;x++);
   P3=  0x06;
   P2 = 0x00;
   P2 = 0x80;
   for(x=0;x<5000;x++);
   P3 = 0x01;
   P2 = 0x00;
   P2 = 0x80; 
   for(x=0;x<5000;x++);
}