LCD12864不带字库的单片机程序如何改写为带字库的显示

ID:1011007 · 发表于 2022-4-17 15:56

单片机源程序如下:
#include "lcd12864.h"
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

#if 1             //TX_OSC
sbit pinLCD_CSA = P2^6;
sbit pinLCD_CSB = P2^7;
sbit pinLCD_DI = P1^7;                   // 寄存器操作
sbit pinLCD_RW = P2^4;                   // 写寄存器操作
sbit pinLCD_E = P2^5;
#define LCD_DataPort P0

#endif

#if 0             //Test
sbit pinLCD_CSA = P2^4;
sbit pinLCD_CSB = P2^3;
sbit pinLCD_DI = P2^2;                   // 寄存器操作
sbit pinLCD_RW = P2^1;                   // 写寄存器操作
sbit pinLCD_E = P2^0;
#define LCD_DataPort P1

#endif

#define  LCDField_NULL  4
#define c_LCD_MaxColNumber 16
//uchar ucDotData;

//----------------------------------------------------------------------------
// 函数名：void LCD_DrvFieldSelect(uchar ucField)
// 用途：选择液晶的区域，共1＃?三个区域
// 入口参数：uchar ucField 第几个区域,区域为 1 、 2 、3 , 三个区域
// 返回: 无
// ----------------------------------------------------------------------------
void LCD_DrvFieldSelect(uchar ucField)
{
      switch(ucField)
      {
            case 0:
                     pinLCD_CSA = 0;
                     pinLCD_CSB = 1;
                     break;
            case 1:
                     pinLCD_CSA = 1;
                     pinLCD_CSB = 0;
                     break;
            default:
         pinLCD_CSA = 1;
                     pinLCD_CSB = 1;
                     break;
      }
}

//----------------------------------------------------------------------------
// 函数名：void LCD_DrvWriteREG(uchar ucIndicate)
// 用途：写液晶寄存器
// 入口参数：ucField 寄存器所在的通道
//          ucIndicate 指令
// 返回: 无
//----------------------------------------------------------------------------
void LCD_DrvWriteREG(uchar ucField,uchar ucIndicate)
{

      pinLCD_DI = 0;                   // 寄存器操作
      pinLCD_RW = 0;                   // 写寄存器操作

LCD_DrvFieldSelect(ucField);    // 液晶片选

LCD_DataPort = ucIndicate; // 向液晶寄存器写入数据
      pinLCD_E = 1;
      pinLCD_E = 0;

pinLCD_RW = 1;                   // 写寄存器操作

      pinLCD_DI = 0;                   // 寄存器操作
LCD_DrvFieldSelect(LCDField_NULL); // 关闭液晶片选
}

//----------------------------------------------------------------------------
// 函数名：uchar LCD_DrvReadREG(uchar ucField)
// 用途：读液晶寄存器
// 入口参数：无
// 返回: 液晶寄存器中的内容
//----------------------------------------------------------------------------

uchar LCD_DrvReadREG(uchar ucField)
{
      uchar ucResult;

      pinLCD_E = 0;

      pinLCD_DI = 0;                   // 寄存器操作
      pinLCD_RW = 1;                   // 写寄存器操作
_nop_();

LCD_DrvFieldSelect(ucField);    // 液晶片选

LCD_DataPort = 0xFF; // 向液晶寄存器写入数据
         pinLCD_E = 1;
      pinLCD_E = 0;

ucResult = LCD_DataPort ;    // 从液晶寄存器读出数据

LCD_DrvFieldSelect(LCDField_NULL); // 关闭液晶片选

return ucResult;
}

//----------------------------------------------------------------------------
// 函数名：void LCD_DrvWriteData(uchar ucData)
// 用途：向液晶写入数据
// 入口参数：ucField 寄存器所在的通道
//          ucData  待写入的数据
// 返回: 无
//----------------------------------------------------------------------------
void LCD_DrvWriteData(uchar ucField,uchar ucData)
{

      pinLCD_DI = 1;                   // 数据操作
pinLCD_RW = 0;

LCD_DrvFieldSelect(ucField);       // 液晶片选
LCD_DataPort = ucData;       // 向液晶寄存器写入数据
      pinLCD_E = 1;
      pinLCD_E = 0;

      pinLCD_RW = 1;
      pinLCD_DI = 1;                   // 数据操作

LCD_DrvFieldSelect(LCDField_NULL);  // 关闭液晶片选
}

//----------------------------------------------------------------------------
// 函数名：uchar LCD_DrvReadData(unsigned char ucField)
// 用途：自液晶读出数据
// 入口参数：ucField 第几个区域，区域为 1 、 2 、3 , 三个区域
// 返回: 液晶数据的内容
//----------------------------------------------------------------------------
/*
uchar LCD_DrvReadData(uchar ucField)
{
      uchar ucResult;

      pinLCD_DI = 0;                   // 数据操作
      pinLCD_RW = 0;                   // 读数据操作
Delay(10);

LCD_DrvFieldSelect(ucField);       // 液晶片选
ucResult = LCD_DataPort;    // 向液晶数据写入数据
Delay(10);

      pinLCD_RW = 1;
Delay(10);

LCD_DrvFieldSelect(LCDField_NULL);  // 关闭液晶片选

return ucResult;
}
*/

/*
void loop_lcd_is_busy(unsigned char right)
{
  unsigned char 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 loop_lcd_is_busy(unsigned char right)
{
  unsigned char tmp,counter=0;
  do {
            tmp = LCD_DrvReadREG(right);

      if(counter++>50) break;//超时跳出
  }
  while ((tmp|0x7f)==0xff);
}

void lcd_cmd_wr(unsigned char cmdcode,unsigned char right)
{
  loop_lcd_is_busy(right);
//  if(right) LCD_RCW = cmdcode;
//  else LCD_LCW = cmdcode;
      LCD_DrvWriteREG(right,cmdcode);
}

void lcd_data_wr(unsigned char ldata,unsigned char right)
{
  loop_lcd_is_busy(right);
//  if(right) LCD_RDW = ldata;
//  else LCD_LDW = ldata;
      LCD_DrvWriteData(right,ldata);
}

void lcd12864_clr(void)
{
      unsigned char 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);
            }
      }
}

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);
  lcd12864_clr();
}

/*图片写入函数*/
void lcd12864_put_xywhb(unsigned char x,y,w,h,unsigned char *bmp)
{
      unsigned char 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);
      }
}//*

/*8x8点阵asci字符显示*/
void lcd12864_put_xystr(unsigned char x,y,n,unsigned char *str)
{
      unsigned char i;
      for(i=0;i<n;i++) {
            if((x+i)>63) {
                     lcd_cmd_wr(SETY+y,1);
                     lcd_cmd_wr(SETX+x+i-64,1);
                     lcd_data_wr(str[ i],1);
            }
            else {
                     lcd_cmd_wr(SETY+y,0);
                     lcd_cmd_wr(SETX+x+i,0);
                     lcd_data_wr(str[ i],0);
            }
      }
}//*/

/*8x8点阵asci字符显示*/
void lcd12864_put_clr(unsigned char x,y,n)
{
      unsigned char i;
      for(i=0;i<n;i++) {
            if((x+i)>63) {
                     lcd_cmd_wr(SETY+y,1);
                     lcd_cmd_wr(SETX+x+i-64,1);
                     lcd_data_wr(0,1);
            }
            else {
                     lcd_cmd_wr(SETY+y,0);
                     lcd_cmd_wr(SETX+x+i,0);
                     lcd_data_wr(0,0);
            }
      }
}//*/

#ifndef __LCD_12864_H__
#define __LCD_12864_H__

#include <reg52.h>
#include <absacc.h>
#include "Mini51b.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

extern void lcd12864_init(void);

/*图片写入函数*/
extern void lcd12864_put_xywhb(unsigned char x,y,w,h,unsigned char *bmp);
/*8x8点阵asci字符显示*/
extern void lcd12864_put_xystr(unsigned char x,y,n,unsigned char *str);
/*指定快清零*/
extern void lcd12864_put_clr(unsigned char x,y,n);
extern void lcd_cmd_wr(unsigned char cmdcode,unsigned char right);
extern void lcd_data_wr(unsigned char ldata,unsigned char right);
extern void lcd12864_clr(void);
#endif