ads7843.h

An interrest demo of uCGUI base S3C44B0X

#ifndef __ADS7843_H__
#define __ADS7843_H__

/****************************************************************
H/W CONNECTIONS:
TP_DCLK		GPC9	OUT
TP_CS		GPC5	OUT
TP_DIN		GPC6	OUT
TP_DOUT		GPC7	IN
TP_BUSY		GPD6	IN
TP_IRQ		GPC4	IN
new define for my board;

TP_DCLK		GPG3	OUT
TP_CS		GPG4	OUT
TP_DIN		GPG2	OUT
TP_DOUT		GPG5	IN
TP_BUSY		GPG6	IN
TP_IRQ		GPG1	IN
****************************************************************/

// A/D 通道选择命令字和工作寄存器
#define	CHX 	0x94 	//通道Y+的选择控制字	//0x94
#define	CHY 	0xD4	//通道X+的选择控制字	//0xD4

/*
 *	write to ads7843's pin
 */
#define TP_DCLK(a)      rPDATG=(rPDATG&~0x08)|((!a<<3)&0x08)
#define TP_CS(a)		rPDATG=(rPDATG&~0x10)|((a<<4)&0x10)
#define TP_DIN(a)		rPDATG=(rPDATG&~0x04)|((a<<2)&0x04)
/*
 *	read from ads7843's pin
 */
#define TP_DOUT	    ((rPDATG>>5) & 0x1)	
#define TP_BUSY		((rPDATG>>6) & 0x1)
#define TP_IRQ		((rPDATG>>1) & 0x1)


///*
//**********************************************************************
//*
//*          Config defaults
//*
//**********************************************************************
//*/
/*ifndef GUI_TOUCH_AD_LEFT      // max value returned by AD-converter 
 #define GUI_TOUCH_AD_LEFT 270   
#endif

#ifndef GUI_TOUCH_AD_RIGHT      // min value returned by AD-converter
  #define GUI_TOUCH_AD_RIGHT 3800    
#endif
//
#ifndef GUI_TOUCH_AD_TOP       // max value returned by AD-converter 
  #define GUI_TOUCH_AD_TOP 250
#endif
//
#ifndef GUI_TOUCH_AD_BOTTOM      // min value returned by AD-converter
  #define GUI_TOUCH_AD_BOTTOM 3680
#endif
//
#ifndef GUI_TOUCH_SWAP_XY    //Is XY of touch swapped ? 
  #define GUI_TOUCH_SWAP_XY 0
#endif
//
#ifndef GUI_TOUCH_MIRROR_X
  #define GUI_TOUCH_MIRROR_X 0
#endif
//
#ifndef GUI_TOUCH_MIRROR_Y
  #define GUI_TOUCH_MIRROR_Y 1
#endif
//
#ifndef GUI_TOUCH_YSIZE
  #define GUI_TOUCH_YSIZE 240
#endif
//
#ifndef GUI_TOUCH_XSIZE
  #define GUI_TOUCH_XSIZE 320
#endif   */

int Read_X(void);
int Read_Y(void);
void TP_GetAdXY(int *x,int *y);
void TP_GetScrXY(int *x,int *y);

#endif