sub.h

单片机显示汉字实验

#include "absacc.h"
#include "math.h"



#define CharWidth 2 //每个汉字占 2个字节
#define ColumnChar 16 //总共16列


//指令,数据 读写状态检查
#define RWCheck() { unsigned char sta; do{ sta=XBYTE[ComPort] & 0x03; } while(sta!=0x03); }
//数据自动读 状态检查
#define AutoRCheck() { unsigned char sta; do{ sta=XBYTE[ComPort] & 0x04; } while(sta!=0x04); }
//数据自动写 状态检查
#define AutoWCheck() { unsigned char sta; do{ sta=XBYTE[ComPort] & 0x08; } while(sta!=0x08); }

/*------输入/出函数,与T6963通讯------------------------------------------------*/
/*------------------------------------------------------------------------*/

// 向数据口发Data
#define OutPortData(dat ) { RWCheck(); XBYTE[DataPort]=dat; }

//写有 1 个参数命令
#define OutPortCom1(command) { RWCheck(); XBYTE[ComPort]= command; }

//写有 2 个参数命令
#define OutPortCom2(dat, command) { OutPortData(dat); OutPortCom1(command); }

//写有 3 个参数命令
#define OutPortCom3(data1, data2, command) { OutPortData(data1); OutPortData(data2); OutPortCom1(command);}


unsigned char InPortData() { RWCheck(); return(XBYTE[DataPort]); }

/*---------------------------------------------------------------------------------------------------*/
void ClearScreen()
{

unsigned int i;
///////// 清显示 RAM 区 0000h--2000h (8k)
OutPortCom3(0x00,0x00,0x24); //设置指针地址0000H

OutPortCom1(0xb0); //设置自动写状态
for(i=0x00;i<0x2000;i++) OutPortData(0x00); // data=0;
OutPortCom1(0xb2); // 自动写结束
}

//初始化LCD
void InitLCD(char Width)
{
LineChar=Width;
OutPortCom3( 0x00,0x00,0x42 ); //设置图形显示区域首地址GraphAddr
OutPortCom3( LineChar,0x00,0x43 ); //设置图形显示区域宽度 : LineChar

// OutPortCom3( 0x00,0x00,0x42 ); //设置图形显示区域首地址GraphAddr
// OutPortCom3( 0x10,0x00,0x43); //设置图形显示区域宽度:10H

OutPortCom1(0xa7); //设置光标形状 cursor size 8x8
OutPortCom1(0x80); //设置显示方式: CGROM方式 文本\图形 "或"
OutPortCom1(0x98); //设置显示开关: 1001 1100 图形

ClearScreen();
}