📄 12864字库.c
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/*============================================================
使用12864液晶显示和PS/2键盘的示例 杨川 2007/7/25
-------------------------------------------------
//==============================================================
SMC1602A(16*2)模拟口线接线方式
连接线图:
---------------------------------------------------
|LCM-----51 | LCM-----51 | LCM------51 |
--------------------------------------------------|
|DB0-----P1.0 | DB4-----P1.4 | RW-------P2.1 |
|DB1-----P1.1 | DB5-----P1.5 | RS-------P2.0 |
|DB2-----P1.2 | DB6-----P1.6 | E--------P2.2 |
|DB3-----P1.3 | DB7-----P1.7 | VLCD接1K电阻到GND|
---------------------------------------------------
Keyboard接线
PS/2--------51
1 DATA------P3.4
3 GND
4 VCC
5 CLK-------P3.3 接在51的外部中断，触发方式为低电平
本程序源码只供学习参考，不得应用于商业用途，如有需要请联系作者。
[注:AT89x51使用12M或11.0592M晶振,实测使用11.0592M]
[Keil uV2 7.01编译运行通过 程序中没有做键盘数据的奇偶校验]
=============================================================*/
/*修改 于2007/7/31 13:33
利用键盘输入，实现12864显示功能和利用微型打印机实现实时打印功能
keyboard接线
打印pdata---------P0
busy---------P3.0
STB ---------P3.1
=============================================================*/
//===================================================================================//
//=======本程序带字库的12864显示程序，使用前须将IO口定义，将程序初始化lcdInit ();====//
//清屏程序为lcdClear();
//调用显示汉字的程序为dispString (uchar X, Y, unsigned int speed, uchar *msg);======//
//===================================================================================//
#include<regx51.h>
//#include <intrins.h>
//#include <string.h>
#include "scancodes.h"
#define uchar unsigned char
#define BUSY_FLAG P0_7 //液晶模块忙标志
//#define MPU_RESET P2_1 //液晶复位控制
#define MPU_RS_CH P2_0 //寄存器选择输入
#define MPU_RW_CH P2_1 //读写控制
#define MPU_ENABLE P2_2 //使能控制
#define LCD_DATA P0 //液晶数据口
#define uchar unsigned char
#define Key_Data P3_4 //定义Keyboard引脚
#define Key_CLK P3_3
#define Printdata P1
#define Printbusy P3_0
#define Printstb P3_1
extern void _nop_ (void);
#include<print.c>
void chaxun(char x);
void pr1616(void);
void lf(void);
void fangda(char n);
void xiahuaxian(char n);
void fanbai(char n);
void init(void);
void pr(char j,char x);
void lcdWriteCommand (uchar Command);
void lcdWriteData (uchar Data);
void delayMs (unsigned int ms);
void checkLcdBusy (void);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned int,unsigned char ddata1);
void DisplayListChar(uchar X, uchar Y,unsigned int, uchar *DData);
void backspace(void);
void Delay5Ms(void);
void Delay400Ms(void);
void Decode(unsigned char ScanCode);
//void chaxun(char x);
char prindata[30]={' '};
char prnum=0;
unsigned char code Cls[] = {" "};
static unsigned char IntNum = 0; //中断次数计数
static unsigned char KeyV; //键值
static unsigned char DisNum = 0; //显示用指针
static unsigned char Key_UP=0, Shift = 0;//Key_UP是键松开标识，Shift是Shift键按下标识
static unsigned char BF = 0; //标识是否有字符被收到
char flag=1;//用于标志是否打印
//===============================================
void lcdWriteCommand (uchar Command)
{
checkLcdBusy();
delayMs (2);
MPU_RS_CH = 0;
MPU_RW_CH = 0;
LCD_DATA = Command;
MPU_ENABLE = 1;
delayMs(1);
MPU_ENABLE = 0;
}
//========延时====================================
void delayMs (unsigned int ms)
{
uchar i;
while (--ms)
{
for (i = 0; i < 125; i++);
}
}
//===============================================
void checkLcdBusy (void)
{ char i=1;
while(i--);
}
//===============================================
void lcdWriteData (uchar Data)
{
checkLcdBusy();
delayMs (2);
MPU_RS_CH = 1;
MPU_RW_CH = 0;
LCD_DATA = Data;
MPU_ENABLE = 1;
delayMs(1);
MPU_ENABLE = 0;
}
//===============================================
void DisplayListChar(uchar X,uchar Y, unsigned int speed, uchar *msg)
{
if (X ==0x00)
{
X = 0x80;
}
else if (X == 0x01)
{
X = 0x90;
}
else if (X == 0x02)
{
X = 0x88;
}
else if (X == 0x03)
{
X = 0x98;
}
else;
Y= X + Y;
lcdWriteCommand(Y);
while (*msg)
{
lcdWriteData(*msg++);
delayMs(speed);
}
}
/*===================================================*/
void DisplayOneChar(unsigned char X,unsigned char Y,unsigned int speed,unsigned char ddata1)
{ if (X==0)
{
X = 0x80;
lcdWriteCommand(X);
}
else if (X==16)
{
X = 0x90;
lcdWriteCommand(X);
}
else if (X == 32)
{
X = 0x88;
lcdWriteCommand(X);
}
else if (X == 48)
{
X = 0x98;
lcdWriteCommand(X);
}
else;
Y= X + Y;
delayMs(speed);
lcdWriteData(ddata1);
}
//===============================================
/*===================================================*/
void backspace(void)
{
if(DisNum>=0&&DisNum<16)
{
if(DisNum%2!=0)
{
prindata[prnum]=0x20;
lcdWriteCommand(0x80+DisNum/2);
lcdWriteData(prindata[prnum-1]);
lcdWriteData(prindata[prnum]);
DisNum--;
}
else
{
prindata[prnum]=0x20;
lcdWriteCommand(0x80+DisNum/2);
lcdWriteData(prindata[prnum]);
prnum=prnum-1;
DisNum--;
}
}
else
if(DisNum>=16&&DisNum<32)
{
if(DisNum%2!=0)
{
prindata[prnum]=0x20;
lcdWriteCommand(0x90+DisNum/2);
lcdWriteData(prindata[prnum-1]);
lcdWriteData(prindata[prnum]);
prnum=prnum-1;
DisNum--;
}
else
{
prindata[prnum]=0x20;
lcdWriteCommand(0x90+DisNum/2);
lcdWriteData(prindata[prnum]);
prnum=prnum-1;
DisNum--;
}
}
}
//===============================================
void lcdClear (void)
{
lcdWriteCommand(0x01);
}
//===============================================
void lcdInit (void)
{
delayMs(40);
delayMs(1);
lcdWriteCommand(0x01);//清除显示
lcdWriteCommand(0x30);//30H--基本指令操作
lcdWriteCommand(0x0d);//开显示，关光标，不闪烁
lcdWriteCommand(0x06);//指定在资料写入或读取时，光标的移动方向，DDRAM的地址计数器（AC）加1。
}
//===============================================
void delaySec (uchar sec)
{
uchar i;
while (--sec)
{
for (i = 0; i < 200; i++)
{
delayMs (6);
}
}
}
void main(void)
{ init();//打印机初始化
lcdInit ();
DisplayListChar(0, 0, 1, " ");
DisplayListChar(1, 0, 1, " 海军工程大学 ");
DisplayListChar(2, 0, 100, "系统初始化 .....");
DisplayListChar(3, 0, 100, "................");
delaySec(6);
lcdClear();
IT1 = 0; //设外部中断1为低电平触发
EA = 1;
EX1 = 1; //开中断
do
{
if (BF) //bf0=0
Decode(KeyV);
else
EA = 1; //开中断
}
while(1);
}
void Keyboard_out(void) interrupt 2
{
if ((IntNum > 0) && (IntNum < 9)) //intnum0=0
{
KeyV = KeyV >> 1; //因键盘数据是低>>高，结合上一句所以右移一位
if (Key_Data) KeyV = KeyV | 0x80; //当键盘数据线为1时为1到最高位
}
IntNum++;
while (!Key_CLK); //等待PS/2CLK拉高
if (IntNum > 10)
{
IntNum = 0; //当中断11次后表示一帧数据收完，清变量准备下一次接收
BF = 1; //标识有字符输入完了
EA = 0; //关中断等显示完后再开中断 (注：如这里不用BF和关中断直接调Decode()则所Decode中所调用的所有函数要声明为再入函数)
}
if(flag==0) //flag0=1
{if(KeyV==0x35)
flag=1;
else if(KeyV==0x31)
flag=2;
else ;
// KeyV=0x7E;
}
}
void Decode(unsigned char ScanCode) //注意:如SHIFT+G为12H 34H F0H 34H F0H 12H，也就是说shift的通码+G的通码+shift的断码+G的断码
{
unsigned char TempCyc,i;
if (!Key_UP) //当键盘松开时
{
switch (ScanCode)
{
case 0xF0 : // 当收到0xF0，Key_UP置1表示断码开始
Key_UP = 1;
break;
case 0x12 : // 左 SHIFT
Shift = 1;
break;
case 0x5a://打印命令
{
init();
pr(prnum,prindata);
for(i=0;i<30;i++)
prindata[i]=0x20;
lf();
DisplayListChar(1, 0, 1, "打印中.....");
delaySec(2);
lcdClear();
lcdInit ();
prnum=0;
DisNum=0;
}
break;
case 0x59 : // 右 SHIFT
Shift = 1;
break;
case 0x66:
{
backspace();
break;
}
default:
if (DisNum > 63)
{
lcdClear();//清LCD第二行
DisNum = 0;
}
if(!Shift) //如果SHIFT没按下
{
for (TempCyc = 0;(UnShifted[TempCyc][0]!=ScanCode)&&(TempCyc<59); TempCyc++); //查表显示
if (UnShifted[TempCyc][0] == ScanCode)
{
DisplayOneChar(DisNum, 1,1, UnShifted[TempCyc][1]);
prindata[prnum++]= UnShifted[TempCyc][1];DisNum++;
}
//chaxun(ScanCode);
}
else //按下SHIFT
{
for(TempCyc = 0; (Shifted[TempCyc][0]!=ScanCode)&&(TempCyc<59); TempCyc++); //查表显示
if (Shifted[TempCyc][0] == ScanCode)
{
DisplayOneChar(DisNum, 1,1, Shifted[TempCyc][1]);
prindata[prnum++]=Shifted[TempCyc][1];DisNum++;
}
}
break;
}
}
else
{
Key_UP = 0;
switch (ScanCode) //当键松开时不处理判码，如G 34H F0H 34H 那么第二个34H不会被处理
{
case 0x12 : // 左 SHIFT
Shift = 0;
break;
case 0x59 : // 右 SHIFT
Shift = 0;
break;
}
}
BF = 0; //标识字符处理完了
if(prnum==30)
{
flag=0;
DisplayListChar(3, 0, 1, "是否打印？Y/N");
while(!flag) EA=1;
if(flag==1)
{ lcdInit ();
lcdClear();
init();
pr(30,prindata);
for(i=0;i<30;i++)
prindata[i]=0x20;
lf();
DisplayListChar(1, 0, 1, "打印中.....");
delaySec(2);
prnum=0;
DisNum = 0;
lcdClear();//清LCD第二行
KeyV=0x7e;
lcdInit ();
}
else if(flag==2)
{
prnum=0;
DisNum = 0;
lcdClear();//清LCD第二行
KeyV=0x7e;
lcdInit ();
}
else ;
}
}
/*=====================================================================//
//此程序的目的在于查寻按键的通码，用于实现自定义的功能，通常可以不编译 //
//==================================================================== */
/*void chaxun(char x)
{ char y=0,z=0;
y=x;
x=(x&0xf0);
x=(x>>4);
if(x>9&&x<16)
{z=x-9;
z=z+0x60;
DisplayOneChar(DisNum, 1,1,z);
DisNum++;
}
else
{
DisplayOneChar(DisNum, 1,1,x+0x30);
DisNum++;
}
x=y;
x=(x&0x0f);
if(x>9&&x<16)
{z=x-9;
z=z+0x60;
DisplayOneChar(DisNum, 1,1,z);
DisNum++;
}
else
{
DisplayOneChar(DisNum, 1,1,x+0x30);
DisNum++;
}
}*/
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