disp.h

这是一个ＴＤＡ7540的模版程序

/***************************************************************************
Project  :   TDA7540 Jig board 
Compiler : ST7 HiCross C (HiWARE)
Module   :  Disp.c
Version  :  V 1.0
Created  : Jan.24th,2005 
Author   :  Jerry HE / ST-ShenZhen
Description
         -  LCD display
Modified
	  -    
***************************************************************************/

/**************************************************************************
        Constants/Macro Definitions
***************************************************************************/
#define NOP    {asm nop; asm nop; asm nop;}

//define the mode of display
#define ALL_REFRESH  1
#define BYBYTES_REFRESH 2

//define the command for the LCD display
#define LCDCLEAR  0x01
#define RETURNHOME 0x02
#define INCREMODE 0x06
#define DECREMODE 0x04
#define SHIFTLEFT 0x05
#define SHIFTRIGHT 0x04
#define DISPLAYON 0x0c
#define DISPLAYOFF 0x08
#define CURSORON 0x0a
#define CURSORBLINKON  0x09
#define FUNTIONSET 0x38
#define CGRAMADR 0x40
#define DDRAMADR 0x80

//Detect LCD busy or not
#define LCDBUSY 0x01
#define LCDIDLE  0x00

//First line or second line
#define FIRSTLINE 0x01
#define SECONDLINE 0x02
#define BOTHLINE    0x03

//LCD Flags
EXTR unsigned char  LCDDisplayFlag;
#define DISPON     7
#define CURSORATHOME  6
#define SHIFTINGON   5
#define INCREASEMODE  4
#define SHOWCURSOR    3
#define CURSORBLINK  2
#define SHIFTCURSOROrSCREEN  1
#define SHIFTRIGHTOrLEFT 0
//physical layer of LCD display

extern void  WriteDataToLCD(char);
extern void  WriteCommToLCD(char);
extern unsigned char  ReadDataFromLCD(void);
extern void  DataSendOrgPort(char);
extern unsigned char  DataReceOrgPort(void);
extern void LCDDisplayWelcome(void);
extern void LCDDisplay(unsigned char,unsigned char,unsigned char ,unsigned char);
extern void LCDInit(void);
extern unsigned char LCDBusy(void);
extern void LCDTest(void);
extern void DisplayOn(void);
extern void DisplayOff(void);
extern void ShowCursor(void);
extern void UnshowCursor(void);
extern void INCModeAndDECMode(void);
extern void ScreenShiftLeft(void);
extern void ScreenShiftRight(void);
extern void CursorShiftLeft(void);
extern void CursorShiftRight(void);
extern void DisplayClear(unsigned char);
extern void DisplayVersion(void);
extern void Display_Main(void);
extern void FetchMessage(unsigned char *Msg, unsigned char No, unsigned char Pos);

//Define the variable 
EXTR unsigned char DispBuff[32];
EXTR unsigned char DispBackupBuff[32];
//First Line from DispBuffer[0]~DispBuffer[15]
//Second Line from DispBuffer[16]~DispBuffer[31]
/*** (c) 2005  STMicroelectronics ****************** END OF FILE ***/