#include
#include "KBCODE.H"
#define LCM_RS P2_0
#define LCM_RW P2_1 //定义LCD引脚
#define LCM_E P2_2
#define LCM_Data P0
#define Busy 0x80 //用于检测LCM状态字中的Busy标识
#define Key_Data P3_2 //定义Keyboard引脚
#define Key_CLK P3_3
void LCMInit(void);
void DisplayOneChar(unsigned char X,unsigned char Y,unsigned char DData);
void DisplayListChar(unsigned char X,unsigned char Y,unsigned char code *DData);
void Delay5Ms(void);
void Delay400Ms(void);
void Decode(unsigned char ScanCode);
void WriteDataLCM(unsigned char WDLCM);
void WriteCommandLCM(unsigned char WCLCM,BuysC);
unsigned char ReadStatusLCM(void);
unsigned char code cdle_net[] = {"RICHMCU PS2 TEST"};
unsigned char code email[] = {"WWW.RICHMCU.COM"};
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
void main(void)
{
unsigned char TempCyc;
Delay400Ms(); //启动等待,等LCM讲入工作状态
LCMInit(); //LCM初始化
DisplayListChar(0, 0, cdle_net);
DisplayListChar(0, 1, email);
for(TempCyc=0; TempCyc<10; TempCyc++) {
Delay400Ms(); //延时
}
DisplayListChar(0, 1, Cls);
IT1 = 0; //设外部中断1为低电平触发
EX1 = 1; //开中断
EA = 1;
while(1) {
if(BF)
Decode(KeyV);
else {
EA = 1; //开中断
}
}
}
//写数据
void WriteDataLCM(unsigned char WDLCM)
{
ReadStatusLCM(); //检测忙
LCM_Data = WDLCM;
LCM_RS = 1;
LCM_RW = 0;
LCM_E = 0; //若晶振速度太高可以在这后加小的延时
LCM_E = 0; //延时
LCM_E = 1;
}
//写指令
void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
{
if(BuysC)
ReadStatusLCM(); //根据需要检测忙
LCM_Data = WCLCM;
LCM_RS = 0;
LCM_RW = 0;
LCM_E = 0;
LCM_E = 0;
LCM_E = 1;
}
//读状态
unsigned char ReadStatusLCM(void)
{
LCM_Data = 0xFF;
LCM_RS = 0;
LCM_RW = 1;
LCM_E = 0;
LCM_E = 1;
while(LCM_Data & Busy); //检测忙信号
return(LCM_Data);
}
void LCMInit(void) //LCM初始化
{
LCM_Data = 0;
WriteCommandLCM(0x38,0); //三次显示模式设置,不检测忙信号
Delay5Ms();
Delay5Ms();
WriteCommandLCM(0x38,0);
Delay5Ms();
Delay5Ms();
WriteCommandLCM(0x38,0);
Delay5Ms();
Delay5Ms();
WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
WriteCommandLCM(0x08,1); //关闭显示
WriteCommandLCM(0x01,1); //显示清屏
WriteCommandLCM(0x06,1); // 显示光标移动设置
WriteCommandLCM(0x0F,1); // 显示开及光标设置
}
//按指定位置显示一个字符
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{
Y &= 0x1;
X &= 0xF; //限制X不能大于15,Y不能大于1
if(Y)
X |= 0x40; //当要显示第二行时地址码+0x40;
X |= 0x80; //算出指令码
WriteCommandLCM(X, 1); //发命令字
WriteDataLCM(DData); //发数据
}
//按指定位置显示一串字符
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
{
unsigned char ListLength;
ListLength = 0;
Y &= 0x1;
X &= 0xF; //限制X不能大于15,Y不能大于1
while (DData[ListLength]>0x19) {//若到达字串尾则退出
if(X <= 0xF) {//X坐标应小于0xF
DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
ListLength++;
X++;
}
}
}
//5ms延时
void Delay5Ms(void)
{
unsigned int TempCyc = 5552;
while(TempCyc--);
}
//400ms延时
void Delay400Ms(void)
{
unsigned char TempCycA = 5;
unsigned int TempCycB;
while(TempCycA--) {
TempCycB=7269;
while(TempCycB--);
}
}
void Keyboard_out(void) interrupt 2
{
if[[IntNum > 0) && (IntNum < 9]] {
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 |= 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10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
}
}
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;
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 0x59:// 右 SHIFT
Shift = 1;
break;
default:
if(DisNum > 15) {
DisplayListChar(0,1,Cls);//清LCD第二行
DisNum = 0;
}
if(Shift == 1) {//如果按下SHIFT
for(TempCyc = 0;(Shifted[TempCyc][0]!=ScanCode)&&(TempCyc<59); TempCyc++); //查表显示
if(Shifted[TempCyc][0] == ScanCode)
{
DisplayOneChar(DisNum,1,Shifted[TempCyc][1]);
}
DisNum++;
}
else {//没有按下SHIFT
for(TempCyc = 0; (UnShifted[TempCyc][0]!=ScanCode)&&(TempCyc<59);TempCyc++); //查表显示
if(UnShifted[TempCyc][0] == ScanCode) {
DisplayOneChar(DisNum,1,UnShifted[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;
default:
break;
}
}
BF = 0;//标识字符处理完了
}
unsigned char code UnShifted[61][2] = {
0x1C, 'a',
0x32, 'b',
0x21, 'c',
0x23, 'd',
0x24, 'e',
0x2B, 'f',
0x34, 'g',
0x33, 'h',
0x43, 'i',
0x3B, 'j',
0x42, 'k',
0x4B, 'l',
0x3A, 'm',
0x31, 'n',
0x44, 'o',
0x4D, 'p',
0x15, 'q',
0x2D, 'r',
0x1B, 's',
0x2C, 't',
0x3C, 'u',
0x2A, 'v',
0x1D, 'w',
0x22, 'x',
0x35, 'y',
0x1A, 'z',
0x45, '0',
0x16, '1',
0x1E, '2',
0x26, '3',
0x25, '4',
0x2E, '5',
0x36, '6',
0x3D, '7',
0x3E, '8',
0x46, '9',
0x0E, '`',
0x4E, '-',
0x55, '=',
0x5D, '\\',
0x29, ' ',
0x54, '[',
0x5B, ']',
0x4C, ';',
0x52, '\'
};
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