12864液晶模块驱动2

海洋狂吻

三.软件设计

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

*程序名称：带汉字库的12864液晶显示模块驱动

*程序功能：显示字符 、汉字和图片

*开发工具：WSF-51DB开发板

* MCU型号：AT89S52-24PU

*时钟频率：12MHZ

*程序作者：吴师傅

*版权说明：吴师傅版权所有。转载请注明来源和作者

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

#include<reg52.h>

                           

sbit E=P3^4;//脉冲使能

sbit RW=P3^3;//读写选择

sbit RS=P3^2;//数据命令选择

sbit rst=P1^0;//12864复位

                                                                           

unsigned char code pictrue2[192]={//图片：机器猫48*32


0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X7F,0X80,0X00,0X00,0X00,0X1F,0XFF,

0XFE,0X00,0X00,0X00,0X7F,0X1F,0XFF,0X80,0X00,0X01,0XFC,0X0C,0X3F,0XE0,0X00,0X07,

0XF8,0X48,0X1F,0XF8,0X00,0X0F,0X98,0XD1,0X8F,0XFC,0X00,0X1C,0X4C,0XF3,0X9F,0XFE,

0X00,0X1A,0X33,0X39,0XB3,0XFE,0X00,0X33,0XE3,0XFC,0X40,0XFE,0X00,0X31,0X81,0XE1,

0X9E,0X7F,0X00,0X10,0XC1,0X03,0XC0,0X3E,0X00,0X18,0X01,0X03,0X70,0X9E,0X00,0X1F,

0X03,0X03,0X83,0X9E,0X00,0X09,0XE2,0X00,0X3E,0X1C,0X00,0X04,0X3F,0X80,0XFF,0X3C,

0X00,0X07,0X01,0XFF,0XC0,0X70,0X00,0X0F,0XC0,0X00,0X00,0XE0,0X00,0X1F,0XF8,0X00,

0X03,0X80,0X0F,0X0C,0X3F,0XE0,0X1E,0X00,0X39,0XED,0X3B,0XFF,0XFF,0X00,0X20,0X7A,

0XFE,0X07,0XFF,0X80,0X60,0X1C,0X1C,0X07,0XFF,0X80,0X60,0X0F,0X03,0XF7,0XFF,0X80,

0X20,0X0F,0XDE,0X3F,0XFF,0X80,0X30,0X0F,0XF0,0X0F,0XFF,0XA0,0X1C,0X0F,0XE0,0X07,

0XF8,0X30,0X0F,0XFF,0XE0,0X03,0XC8,0X60,0X01,0XE0,0X20,0X03,0X87,0XC0,0X00,0X00,

0X30,0X07,0X00,0X00,0X00,0X00,0X0C,0X0C,0X00,0X00,0X00,0X00,0X07,0XF0,0X00,0X00,

};

            

// 延时ms函数:

void Delayms(unsigned int t)

{

    unsigned int i,j;

    for(i=t;i>0;i--)

             for(j=0;j<120;j++);

}



// 12864检查状态函数:

void Check12864State(void)

{

        P2=0xff;

        E=0;//读状态前三控制线的状态

        RS=0;

        RW=1;

        E=1;//拉高，读状态

        while((P2&0x80)==0x80);//等待空闲

        E=0;//写命令后三控制线的状态

        RS=1;

        RW=0;

}



// 12864写命令函数:

void Write12864Command( unsigned char com)

{

       Check12864State();//检查状态

       P2=com;//赋值

       E=0;//写命令前三控制线的状态

       RS=0;

       RW=0;

       E=1;//拉高，写命令

       E=0;//写命令后三控制线的状态

       RS=1;

       RW=1;

}