//-----------------------------------------------------------------
//  名稱: 計算器頭文件
//-----------------------------------------------------------------
#define INT8    signed char
#define INT16   signed int
#define INT32   signed long 
#define INT8U   unsigned char
#define INT16U  unsigned int
//可顯示最大字符個數
#define MAX_DISPLAY_char    10
//LCD寄存器地址
#define LCD_CMD_WR          0x00
#define LCD_DATA_WR         0x01
#define LCD_BUSY_RD         0x02
#define LCD_DATA_RD         0x03 
//LCD命令地址 
#define LCD_CLS             0x01
#define LCD_HOME            0x02
#define LCD_SETMODE         0x04
#define LCD_SETVISIBLE      0x08
#define LCD_SHIFT           0x10
#define LCD_SETFUNCTION     0x20
#define LCD_SETCGADDR       0x40
#define LCD_SETDDADDR       0x80
//LCD使能引腳掩碼
#define E_PIN_MASK          0x04
//-----------------------------------------------------------------
// 函數申明
//-----------------------------------------------------------------
char ScanKeyPad();
char getKeyChar(); 
void LCD_Initialise();
void Busy_Wait();
void Write_LCD_Command(char cmd);
void Write_LCD_Data(char dat);
void ClearScreen(); 
void Calc_Show_Result(float f);
void Operator_Process(char op); 
void LCD_display(char *buf);