LCD12864指定位置反白显示程序

/***********************************************************************
工 程：ST7920驱动的12864液晶的3线串行驱动模式
创建日期：2007年9月16日
引脚定义：RS(CS)=====>PB5
RW(SID)====>PB6
EN(SCLK)===>PB7
PSB为硬件控制，接高电平为8位或4位的并行模式，接低电平为串行模式
本例程使用3线串行模式
************************************************************************/
#include
#include

#define uchar unsigned char
#define uint unsigned int
#define nop() NOP()
#define xtal 8
#define CS PB5
#define SID PB6
#define SCLK PB7

#define Set_CS() DDRB |= (1#define Set_SID() DDRB |= (1#define Set_SCLK() DDRB |= (1
#define Clr_CS() DDRB |= (1#define Clr_SID() DDRB |= (1#define Clr_SCLK() DDRB |= (1
//====================================================================
//函数声明
void Delay(uint ms); //延时子程序
void W_1byte(uchar RW, uchar RS, uchar W_data);
void Write_8bits(uint W_bits);
void LCD_Init(void);
void Char_Set_XY(uchar x, uchar y, uchar *p);
void Set_Draw(void);
//设定哪一行,从那一个位置开始到那一个位置结束使用反白
//x=液晶屏上汉字的位置(1~8)；end_x=汉字结束的地址(1~8)；y=1~4行
//clear=1:清除反白；clear=0:设置反白；
void Set_White(uchar x,uchar y,uchar end_x,uchar clear);
void Draw_Pic(uchar x, uchar y, const uchar *Draw);
/*
/********************************************************************
********************************************************************/
const uchar PIC1[64][16]={
/*-- 调入了一幅图像：C:Documents and SettingsAdministrator桌面atmel.bmp --*/
/*-- 宽度x高度=128x64 --*/

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x01,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x00,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF8,0x00,0x00,
0x00,0x00,0x00,0x07,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x07,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x3F,0xE7,0xFC,0xFF,0xFF,0xFF,0xE0,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x00,0x3F,0xE7,0xFC,0xFF,0xFF,0xFF,0xF0,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x00,0x7F,0xE7,0xFC,0xFF,0xFF,0xFF,0xF8,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x00,0x7F,0xE7,0xFC,0xFF,0xFF,0xFF,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x00,0xFF,0xE7,0xFC,0xFF,0xBF,0xEF,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x00,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x01,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x03,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x03,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x07,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFC,0x00,0x0F,0xF8,0x00,0x00,0x00,
0x00,0x07,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x0F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x0F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x1F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x1F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x3F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x3F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0x7F,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0xFF,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xF8,0x00,0x00,0x00,
0x00,0xFF,0xFF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFC,0x00,0x0F,0xF8,0x00,0x00,0x00,
0x01,0xFF,0xBF,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFE,0x00,0x0F,0xF8,0x00,0x00,0x00,
0x01,0xFF,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xF8,0x00,0x00,
0x03,0xFF,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xF8,0x00,0x00,
0x03,0xFE,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xF0,0x00,0x00,
0x07,0xFE,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xF0,0x00,0x00,
0x07,0xFF,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xE0,0x00,0x00,
0x0F,0xFF,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xE0,0x00,0x00,
0x0F,0xFF,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xC0,0x00,0x00,
0x1F,0xFF,0x3F,0xE7,0xFC,0xFF,0xBF,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0xC0,0x00,0x00,
0x1F,0xFF,0x3F,0xE7,0xFC,0xFF,0x1F,0xE7,0xFC,0xFF,0xFF,0xCF,0xFF,0x80,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x3E,0x00,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x63,0x00,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFE,0xFD,0x00,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0xB6,0x80,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,0xBE,0x80,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF8,0xB6,0x80,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF8,0xF7,0x00,0x00,
0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF0,0x63,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};

//==================================================================

const uchar PIC2[64][16]={
/*-- 调入了一幅图像：C:Documents and SettingsAdministrator桌面AVR.BMP --*/
/*-- 宽度x高度=128x64 --*/

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x43,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xBD,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x27,
0x00,0x00,0x1F,0xFF,0x83,0xFF,0xE0,0x00,0x00,0xFF,0xF8,0x3F,0xFF,0xFF,0x01,0x3C,
0x00,0x00,0x3F,0xFF,0x81,0xFF,0xF0,0x00,0x01,0xFF,0xF0,0x7F,0xFF,0xFF,0xC1,0x3E,
0x00,0x00,0x3F,0xFF,0xC1,0xFF,0xF0,0x00,0x01,0xFF,0xF0,0x7F,0xFF,0xFF,0xE0,0xA7,
0x00,0x00,0x3F,0xFF,0xC1,0xFF,0xF0,0x00,0x03,0xFF,0xE0,0x7F,0xFF,0xFF,0xF0,0xE7,
0x00,0x00,0x7F,0xFF,0xE0,0xFF,0xF8,0x00,0x03,0xFF,0xE0,0xFF,0xFF,0xFF,0xF8,0x7E,
0x00,0x00,0x7F,0xFF,0xE0,0xFF,0xF8,0x00,0x03,0xFF,0xE0,0xFF,0xFF,0xFF,0xF8,0x00,
0x00,0x00,0x7F,0xFF,0xE0,0x7F,0xFC,0x00,0x07,0xFF,0xC1,0xFF,0xFF,0xFF,0xFC,0x00,
0x00,0x00,0xFF,0xFF,0xF0,0x7F,0xFC,0x00,0x07,0xFF,0xC1,0xFF,0xFF,0xFF,0xFC,0x00,
0x00,0x00,0xFF,0xFF,0xF0,0x7F,0xFE,0x00,0x0F,0xFF,0x83,0xFF,0xFF,0xFF,0xFE,0x00,
0x00,0x01,0xFF,0xFF,0xF8,0x3F,0xFE,0x00,0x0F,0xFF,0x83,0xFF,0xE0,0x7F,0xFE,0x00,
0x00,0x01,0xFF,0xFF,0xF8,0x3F,0xFE,0x00,0x1F,0xFF,0x07,0xFF,0xC0,0x3F,0xFE,0x00,
0x00,0x03,0xFF,0xFF,0xF8,0x3F,0xFF,0x00,0x1F,0xFF,0x07,0xFF,0xC0,0x3F,0xFE,0x00,
0x00,0x03,0xFF,0xFF,0xFC,0x1F,0xFF,0x00,0x1F,0xFE,0x07,0xFF,0xC0,0x3F,0xFE,0x00,
0x00,0x03,0xFF,0xFF,0xFC,0x1F,0xFF,0x80,0x3F,0xFE,0x0F,0xFF,0x80,0x3F,0xFE,0x00,
0x00,0x07,0xFF,0xFF,0xFE,0x0F,0xFF,0x80,0x3F,0xFE,0x0F,0xFF,0x80,0x3F,0xFE,0x00,
0x00,0x07,0xFF,0x9F,0xFE,0x0F,0xFF,0x80,0x7F,0xFC,0x1F,0xFF,0x00,0x7F,0xFE,0x00,
0x00,0x07,0xFF,0x9F,0xFF,0x07,0xFF,0xC0,0x7F,0xFC,0x1F,0xFF,0x00,0xFF,0xFC,0x00,
0x00,0x0F,0xFF,0x8F,0xFF,0x07,0xFF,0xC0,0x7F,0xF8,0x1F,0xFF,0x01,0xFF,0xFC,0x00,
0x00,0x0F,0xFF,0x0F,0xFF,0x03,0xFF,0xC0,0xFF,0xF8,0x3F,0xFF,0xFF,0xFF,0xF8,0x00,
0x00,0x0F,0xFF,0x0F,0xFF,0x83,0xFF,0xE0,0xFF,0xF8,0x3F,0xFF,0xFF,0xFF,0xF8,0x00,
0x00,0x1F,0xFF,0x07,0xFF,0x83,0xFF,0xE1,0xFF,0xF0,0x7F,0xFF,0xFF,0xFF,0xF0,0x00,
0x00,0x1F,0xFE,0x07,0xFF,0xC1,0xFF,0xF1,0xFF,0xF0,0x7F,0xFF,0xFF,0xFF,0xE0,0x00,
0x00,0x3F,0xFE,0x07,0xFF,0xC1,0xFF,0xF3,0xFF,0xE0,0x7F,0xFF,0xFF,0xFF,0xC0,0x00,
0x00,0x3F,0xFE,0x03,0xFF,0xC0,0xFF,0xFB,0xFF,0xE0,0xFF,0xFF,0xFF,0xFF,0x80,0x00,
0x00,0x7F,0xFC,0x03,0xFF,0xE0,0xFF,0xFB,0xFF,0xC0,0xFF,0xFF,0xFF,0xFF,0x00,0x00,
0x00,0x7F,0xFC,0x03,0xFF,0xE0,0x7F,0xFF,0xFF,0xC1,0xFF,0xFF,0xFF,0xFC,0x00,0x00,
0x00,0x7F,0xF8,0x01,0xFF,0xF0,0x7F,0xFF,0xFF,0x81,0xFF,0xFF,0xFF,0xE0,0x00,0x00,
0x00,0xFF,0xFF,0xFF,0xFF,0xF8,0x3F,0xFF,0xFF,0x83,0xFF,0xFF,0xFF,0xC0,0x00,0x00,
0x00,0xFF,0xFF,0xFF,0xFF,0xF8,0x3F,0xFF,0xFF,0x83,0xFF,0xF3,0xFF,0xC0,0x00,0x00,
0x00,0xFF,0xFF,0xFF,0xFF,0xF8,0x3F,0xFF,0xFF,0x03,0xFF,0xE3,0xFF,0xE0,0x00,0x00,
0x01,0xFF,0xFF,0xFF,0xFF,0xFC,0x1F,0xFF,0xFF,0x07,0xFF,0xE3,0xFF,0xE0,0x00,0x00,
0x01,0xFF,0xFF,0xFF,0xFF,0xFC,0x1F,0xFF,0xFE,0x07,0xFF,0xC3,0xFF,0xE0,0x00,0x00,
0x03,0xFF,0xFF,0xFF,0xFF,0xFE,0x1F,0xFF,0xFE,0x0F,0xFF,0xC1,0xFF,0xF0,0x00,0x00,
0x03,0xFF,0xFF,0xFF,0xFF,0xFE,0x0F,0xFF,0xFE,0x0F,0xFF,0x81,0xFF,0xF0,0x00,0x00,
0x03,0xFF,0xFF,0xFF,0xFF,0xFE,0x0F,0xFF,0xFC,0x0F,0xFF,0x81,0xFF,0xF8,0x00,0x00,
0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0x07,0xFF,0xFC,0x1F,0xFF,0x81,0xFF,0xF8,0x00,0x00,
0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0x07,0xFF,0xF8,0x3F,0xFF,0x00,0xFF,0xF8,0x00,0x00,
0x0F,0xFF,0xC0,0x00,0x1F,0xFF,0x83,0xFF,0xF8,0x3F,0xFF,0x00,0xFF,0xF8,0x00,0x00,
0x0F,0xFF,0x80,0x00,0x0F,0xFF,0x83,0xFF,0xF0,0x3F,0xFE,0x00,0xFF,0xFC,0x00,0x00,
0x0F,0xFF,0x80,0x00,0x0F,0xFF,0xC3,0xFF,0xF0,0x7F,0xFE,0x00,0x7F,0xFC,0x00,0x00,
0x1F,0xFF,0x00,0x00,0x0F,0xFF,0xC1,0xFF,0xF0,0x7F,0xFC,0x00,0x7F,0xFC,0x00,0x00,
0x1F,0xFF,0x00,0x00,0x07,0xFF,0xC1,0xFF,0xE0,0x7F,0xFC,0x00,0x7F,0xFE,0x00,0x00,
0x1F,0xFF,0x00,0x00,0x07,0xFF,0xE0,0xFF,0xE0,0xFF,0xF8,0x00,0x7F,0xFE,0x00,0x00,
0x3F,0xFE,0x00,0x00,0x03,0xFF,0xE0,0xFF,0xC0,0xFF,0xF8,0x00,0x3F,0xFE,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};

/********************************************************************/

void main()
{
uchar i = 0;
PORTB = 0XFF; //
DDRB = 0XFF; //PB口全部设为输出模式
Clr_CS();
Clr_SID();
Clr_SCLK();
LCD_Init();
Delay(50);
LCD_Init(); //初始化两边是关键，否则液晶上电重起将不能显示
while(1)
{
nop();
nop();
Delay(500);
Char_Set_XY(0,0,"ST7920_3_wires");
Char_Set_XY(2,1,"反白练习");
Char_Set_XY(0,2,"可以单字反白或不");
Char_Set_XY(3,3,"反白");
Delay(2000);
Delay(2000);
Set_Draw();
Delay(100);
Set_White(1,1,7,0); //第1行，第1个汉字位置到第8汉字位置反白
Set_White(3,2,6,0); //第2行，第3个汉字位置到第6汉字位置反白
Set_White(1,3,8,0); //第3行，第1个汉字位置到第8汉字位置反白
Set_White(4,4,5,0); //第4行，第4个汉字位置到第5汉字位置反白
Delay(2000);
Delay(2000);
Set_White(4,1,4,1); //第1行，第4个汉字位置等取消反白
Set_White(5,2,5,1); //第2行，第5个汉字位置等取消反白
Set_White(6,3,6,1); //第3行，第6个汉字位置等取消反白
Set_White(4,4,4,1); //第4行，第4个汉字位置等取消反白
Delay(2000);
Delay(2000);
Set_White(1,1,1,1); //
Set_White(3,2,3,1); //
Set_White(2,3,2,1); //
Set_White(5,4,5,1); //
Delay(2000);
Delay(2000);
Set_White(1,1,8,1); //第1行，第1个汉字位置到第8汉字位置取消反白
Set_White(1,2,8,1); //第2行，第1个汉字位置到第8汉字位置取消反白
Set_White(1,3,8,1); //第3行，第1个汉字位置到第8汉字位置取消反白
Set_White(1,4,8,1); //第4行，第1个汉字位置到第8汉字位置取消反白

Delay(2000);
Delay(2000);
W_1byte(0,0,0x30); //基本指令集,，绘图显示OFF
W_1byte(0,0,0x01); //清除显示
W_1byte(0,0,0x01); //清除显示
W_1byte(0,0,0x01); //清除显示
Set_Draw();
Delay(100);
Draw_Pic(0,0,*PIC1); //先替换液晶内部RAM中的数据，再开显示
W_1byte(0,0,0x36); //8BIT控制界面，扩充指令集,，绘图显示ON
Delay(5000);
W_1byte(0,0,0x34); //绘图显示OFF,主要解决画图时拖尾的现象，即先
//替换好液晶内部RAM中的数据在开显示。
Draw_Pic(0,0,*PIC2);
W_1byte(0,0,0x36); //8BIT控制界面，扩充指令集，绘图显示ON
Delay(5000);
//画完图后要显示文字要重新设置成普通模式
W_1byte(0,0,0x30); //基本指令集,，绘图显示OFF
W_1byte(0,0,0x01); //清除显示

}
}
/******************************************************************/
void LCD_Init(void)
{
uchar cmd;
cmd=0x30; //功能设置 8位数据，基本指令
W_1byte(0,0,cmd);
Delay(2);
cmd=0x0C; //显示状态 ON，游标OFF，反白OFF
W_1byte(0,0,cmd); //写指令
Delay(2);
cmd=0x01; //清除显示
W_1byte(0,0,cmd); //写指令
Delay(2);
cmd=0x02; //地址归位
W_1byte(0,0,cmd); //写指令
Delay(2);
cmd=0x80; //设置DDRAM地址
W_1byte(0,0,cmd); //写指令
Delay(2); //延时
}
/*******************************************************************
函 数 名：W_1byte
入口参数：RW、RS、W_data
出口参数：无
建立日期：2007年3月3日
修改日期：
函数作用：写一个字节的数据到12864液晶，包括指令和数据
说 明：RW=1，从液晶读数据到MCU；RW=0，写一个数据到液晶；
（一般RW都设为0，即只向液晶写数据，不读数据）
RS=1，写入的是数据；RS=0，写入的是指令；
一般模式：RW=0，RS=1;写数据
RW=0，RS=0;写指令
********************************************************************/
void W_1byte(uchar RW, uchar RS, uchar W_data)
{
uint H_data,L_data,S_ID = 0xf8; //11111RWRS0
if(RW == 0)
{
S_ID &=~ 0x04;
}
else //if(RW==1)
{
S_ID |= 0X04;
}
if(RS == 0)
{
S_ID &=~ 0x02;
}
else //if(RS==1)
{
S_ID |= 0X02;
}
H_data = W_data;
H_data &= 0xf0; //屏蔽低4位的数据
L_data = W_data; //xxxx0000格式
L_data &= 0x0f; //屏蔽高4位的数据
L_data <= 4; //xxxx0000格式
Set_CS();
Write_8bits(S_ID); //发送S_ID
Write_8bits(H_data); //发送H_data
Write_8bits(L_data); //发送L_data
Clr_CS();
}
/********************************************************************
函 数 名：Write_8bits
入口参数：W_bits
出口参数：无
建立日期：2007年3月3日
修改日期：
函数作用：负责串行输出8个bit位
说 明：
********************************************************************/
void Write_8bits(uint W_bits)
{
uint i,Temp_data;
for(i=0; i<8; i++)
{
Temp_data = W_bits;
Temp_data <= i;
if((Temp_data&0x80)==0)
{
Clr_SID();
}
else
{
Set_SID();
}
nop();
Set_SCLK();
nop();
nop();
Clr_SCLK();
nop();
Clr_SID();
}
}
/********************************************************************
函 数 名：Delay
入口参数：ms
出口参数：无
建立日期：2007年3月3日
修改日期：
函数作用：毫秒级的延时程序，当晶振为12Mhz时，xtal=12;
说 明：
********************************************************************/
void Delay(uint ms)
{
uint i;
while(ms--)
{
for(i=1;i<(uint)(xtal*143-2);i++)
;
}
}
//===================================================================*/
/********************************************************************
函 数 名：Char_Set_XY
入口参数：x,y,*p
出口参数：无
建立日期：2007年8月26日
修改日期：
函数作用：
说 明：
********************************************************************/
void Char_Set_XY(uchar x, uchar y, uchar *p)
{
if(y == 0)
{
W_1byte(0,0,(0x80+x));
}
if(y == 1)
{
W_1byte(0,0,(0x90+x));
}
if(y == 2)
{
W_1byte(0,0,(0x88+x));
}
if(y == 3)
{
W_1byte(0,0,(0x98+x));
}
while(*p != 0)
{
W_1byte(0,1,*p++);
}
}
//===================================================================*/

/********************************************************************
函 数 名：Set_Draw(
入口参数：无
出口参数：无
建立日期：2007年8月26日
修改日期：
函数作用：
说 明：
********************************************************************/
void Set_Draw(void)
{
//W_1byte(0,0,0x01); //清屏
Delay(20); //延时
//W_1byte(0,0,0x34); //8BIT控制界面，扩充指令集,，绘图显示OFF
W_1byte(0,0,0x36);
Delay(20); //延时
}
//===================================================================*/
/********************************************************************
函 数 名：Draw_Pic 128*64
入口参数：x,y,*Draw
出口参数：无
建立日期：2007年8月26日
修改日期：
函数作用：
说 明：
********************************************************************/
/*************************************************/

void Draw_Pic(uchar x, uchar y, const uchar *Draw)
{
uchar i, j, temp_x, temp_y; //
temp_x = x; //
temp_y = y; //
temp_x |= 0x80; //
temp_y |= 0x80; //
for(i=0;i<32;i++ ) //上半屏32行
{
W_1byte(0,0,temp_y++); //设置绘图区的Y地址坐标0
W_1byte(0,0,temp_x); //设置绘图区的X地址坐标0
for(j=0;j<16;j++) //
{
W_1byte(0,1,*Draw++); //
}
}

temp_x = 0x88; //
temp_y = 0x80; //
j = 0; //
for(;i<64;i++ )
{
W_1byte(0,0,temp_y++); //设置绘图区的Y地址坐标
W_1byte(0,0,temp_x); //设置绘图区的X地址坐标
for(j=0;j<16;j++)
{
W_1byte(0,1,*Draw++); //
}
}

}
/**************************************************/
/**************************************************/
void Set_White(uchar x,uchar y,uchar end_x,uchar clear)
{
uchar i, j, white_x, white_y,white_end_x,clr_x,clr_y; //
white_end_x = (end_x-x+1);
white_end_x <= 1;
if(y==1)
{
white_x = (0x80+x-1);
white_y = 0x80;
clr_x = 0x80;
clr_y = 0x80;
}
else if(y==2)
{
white_x = (0x80+x-1);
white_y = 0x90;
clr_x = 0x80;
clr_y = 0x90;
}
else if(y==3)
{
white_x = (0x88+x-1);
white_y = 0x80;
clr_x = 0x88;
clr_y = 0x80;
}
else if(y==4)
{
white_x = (0x88+x-1);
white_y = 0x90;
clr_x = 0x88;
clr_y = 0x90;
}
if(clear==0)//要反白时，先将整行的液晶全部清成不反白（此处行指y）
{
for(i=0;i<16;i++ ) //16行
{
W_1byte(0,0,clr_y++); //设置绘图区的Y地址坐标0
W_1byte(0,0,clr_x); //设置绘图区的X地址坐标0
for(j=0;j<16;j++) //
{
W_1byte(0,1,0x00); //清成不反白
nop();
}
}
}
nop();
for(i=0;i<16;i++ ) //16行，因为是16*16汉字
{
W_1byte(0,0,white_y++); //设置绘图区的Y地址坐标0
W_1byte(0,0,white_x); //设置绘图区的X地址坐标0
for(j=0;j{
if(clear==1)
{
W_1byte(0,1,0x00); //取消这一行的8个点的反白，液晶地址自动加1
//（此处行指一个一个液晶点所组成的行）
}
else
{
W_1byte(0,1,0xff); //反白这一行的8个点，液晶地址自动加1
//（此处行指一个一个液晶点所组成的行）
}
nop();
}
}
}
/*************************************************/