touchpad.h

IARSOURCECODE是基于LPC2478嵌入式软件IAR EWARM V4.42的应用实例代码

#include "type.h"
#include "LPC2468.h"
#define	 ADS7843_CSS()		FIO4DIR  |= 0x01 << 27;\
							FIO4MASK &= ~(0x01 << 27);\
							FIO4SET  &= 0x00 << 27;\
    						FIO4MASK |= 0x01 << 27
//IO2SET = ADS7843_CS

#define	 ADS7843_CSC()		FIO4DIR  |= 0x01 << 27;\
							FIO4MASK &= ~(0x01 << 27);\
							FIO4CLR  |= 0x01 << 27;\
  							FIO4MASK |= 0x01 << 27
//IO2CLR = ADS7843_CS	

#define	 ADS7843_DOUTR()	(IOPIN0 & (0x01 << 17))

#define	 ADS7843_DINS()		IOSET0 |= (0x01 << 18)
#define	 ADS7843_DINC()		IOCLR0 |= (0x01 << 18)

#define	 ADS7843_DCLKS()	IOSET0 |= (0x01 << 15)
#define	 ADS7843_DCLKC()	IOCLR0 |= (0x01 << 15)

#define  AIN_X              0x94  
#define  AIN_Y              0xD4  

/* 操作时序控制宏(即延时控制值) */
#define  DELAY_200NS		1

extern void	GPIO_Initialize(void);
extern void	GetLCD_XY(DWORD *vx, DWORD *vy);
extern void	DelayNS(DWORD  dly);
extern void	Beep(void);
extern BYTE	Calibration(void);
extern WORD  ADS7843_WriteRead(BYTE data);
extern DWORD errx1, erry1, errx2, erry2;              // 一般存放基准点坐标
extern DWORD diffx, diffy;                            // 一般存放基准点坐标差值