new lcd.c

单片机程序在线设计单片机程序在线设计单片机程序在线设计

#include	"p33FJ64GP206.h"

#define unchar unsigned char
#define wr1622_Wr  PORTBbits.RB9    //WR
#define wr1622_Dt  PORTBbits.RB10    //DATA
#define wr1622_Cs   PORTBbits.RB7


void wr_b(unchar add,unchar data);//字符地址
void wr_ID(unchar id);//写ID
//void display_all(void);//全显
//void display_no(void);//全不显
void initia(void);//初始化屏幕
void wr_command(unchar command);//写命令

void main()
    
	 {
		SRbits.IPL = 1;			 //CPU interrupt priority level is 1
	  CORCONbits.IPL3 = 0;	//CPU interrupt priority level is 7 or less
	  INTCON1bits.NSTDIS = 1;	//Interrupt nesting is enabled
	  AD1PCFGH=0xffff;
	  AD1PCFGL=0xffff;
	  TRISBbits.TRISB7=0;
     TRISBbits.TRISB9=0;
     TRISBbits.TRISB10=0;

    initia();//初始化屏幕
    while(1)
       {
    
      wr1622_Cs=1;				
      wr1622_Cs=0;

    	wr_b(2,3);//字符地址 
    
    	
    	wr1622_Cs=1;
        }
}

 void initia(void)
 {
 	  	TRISBbits.TRISB7=0;
      TRISBbits.TRISB9=0;
      TRISBbits.TRISB10=0;
     TRISBbits.TRISB8=1;
      wr_ID(0x80);
      wr_command(0x01);//打开系统振荡器
      wr_command(0x03);//打开LCD偏置发生器
      wr_command(0xe3);//1/4 duty,1/3 bias 
      wr_command(0x19);
          wr_command(0x07);
         wr_command(0x40);
      wr1622_Cs=1;
      wr1622_Cs=0;
 }
 
void wr_ID(unchar id)
{
	unchar i;
	wr1622_Cs=1;
  wr1622_Cs=0;
   for(i=0;i<3;i++)
      {
	      if((id&0x80)==0x80)
	         wr1622_Dt=1;
          else 
             wr1622_Dt=0;
          wr1622_Wr=0; 

          wr1622_Wr=1;         
          id<<=1;
       }
  
  
}

void wr_command(unchar command)
{
	unchar i;
	for(i=0;i<9;i++)
	{
		 if((command&0x80)==0x80)
           wr1622_Dt=1;
      else 
           wr1622_Dt=0;
            wr1622_Wr=0;

            wr1622_Wr=1;
            command<<=1;
	}
}


void wr_b(unchar add,unchar data)
{
	  unchar k,j;
    wr_ID(0xa0);//写ID
    for(k=0;k<6;k++)
       {
           if((add&0x20)==0x20)
              wr1622_Dt=1;
           else
              wr1622_Dt=0;
           wr1622_Wr=0;

           wr1622_Wr=1;
           add<<=1;
        }	  
    for(j=0;j<4;j++)
       {
           if((data&0x01)==0x01)
              wr1622_Dt=1;
           else 
              wr1622_Dt=0;
           wr1622_Wr=0;
           Nop();
           wr1622_Wr=1;
           data>>=1;
        }
       
        wr1622_Wr=0;
}