lcd12864.h

LCD1602+PIC16f877A自己的实验过的程序

#ifndef __LCD_12864_H__
#define __LCD_12864_H__

#include "math.h"

/************常用操作命令和参数定义********/
#define DISPON    0x3f    //display on
#define DISPOFF   0x3e    //display off
#define DISPFIRST 0xc0    //define the first row
#define SETY      0xb8    //define page address
#define SETX      0x40    //define column address

/*以下定义与硬件电路设计有关，参考Mini51.H*/
#define LCD_LCW  M51_LCD12864_LCW
#define LCD_LDW  M51_LCD12864_LDW
#define LCD_LCR  M51_LCD12864_LCR
#define LCD_LDR  M51_LCD12864_LDR
#define LCD_RCW  M51_LCD12864_RCW
#define LCD_RDW  M51_LCD12864_RDW
#define LCD_RCR  M51_LCD12864_RCR
#define LCD_RDR  M51_LCD12864_RDR

unsigned char xdata *p;//需要单片机外部1K RAM支持！！！！！！！！

void loop_lcd12864_is_busy(uchar right)
{
  uchar tmp,counter=0;
  do
  {
  	if(right) tmp = LCD_RCR;
  	else tmp = LCD_LCR;	
	if(counter++>50) break;//超时跳出
  }
  while ((tmp|0x7f)==0xff);	 
}

void lcd_cmd_wr(uchar cmdcode,uchar right)
{
  loop_lcd12864_is_busy(right);
  if(right) LCD_RCW = cmdcode;
  else LCD_LCW = cmdcode;  
}

void lcd_data_wr(uchar ldata,uchar right)
{ 
  if(right) LCD_RDW = ldata;
  else LCD_LDW = ldata;
} 

void lcd12864_init(void)
{
  lcd_cmd_wr(DISPON,0);
  lcd_cmd_wr(DISPFIRST,0);
  lcd_cmd_wr(SETY,0);
  lcd_cmd_wr(SETX,0);
  lcd_cmd_wr(DISPON,1);
  lcd_cmd_wr(DISPFIRST,1);
  lcd_cmd_wr(SETY,1);
  lcd_cmd_wr(SETX,1);
}


void lcd12864_clr(void)
{
	uchar i,j;
	for(i=0;i<8;i++)
	{
		lcd_cmd_wr(SETY+i,0);
		lcd_cmd_wr(SETX,0);
		lcd_cmd_wr(SETY+i,1);
		lcd_cmd_wr(SETX,1);	

		for(j=0;j<64;j++)
		{
			lcd_data_wr(0,0);
			lcd_data_wr(0,1);
		}
	}
}

/*图片写入函数*/
void lcd12864_put_xywhb(uchar x,y,w,h,uchar *bmp)
{
  	uchar i,j;
  	h = h/8;
  	for(i=0;i<h;i++)
  	{
	   		lcd_cmd_wr(SETY+y+i,0);
		   	lcd_cmd_wr(SETX+x,0);
		   	for(j=0;j<w-64;j++)
		     	lcd_data_wr(bmp[128*i+j],0);

	   		lcd_cmd_wr(SETY+y+i,1);
		   	lcd_cmd_wr(SETX+x,1);
		   	for(j=64;j<w;j++)
		     	lcd_data_wr(bmp[128*i+j],1);
	  }
}


void set_dot(unsigned char x,y)	//描(x,y)点
{
	p=(y/8)*128+x;	
	*p |= 1<<(y%8);
}

/*
void clr_dot(unsigned char x,y) //清除(x,y)点
{
	p=(y/8)*128+x;	
	*p &= ~(1<<(y%8));
} */

void line(unsigned char x1,y1,x2,y2)//画直线，x1<x2<127,y1<y2<64
{
	unsigned char i;	
	for(i=x1;i<x2+1;i++)	
		set_dot(i,(y2-y1)*(i-x1)/(x2-x1)+y1);
}

void circle(unsigned char x,y,r)//画圆圈，x1<x2<127,y1<y2<64
{
	unsigned char i;	
	for(i=x-r;i<x+r+1;i++) {
		set_dot(i,y-sqrt(r*r-(x-i)*(x-i)));		
		set_dot(i,y+sqrt(r*r-(x-i)*(x-i)));		
	}
}

#endif