ads7843.h

其于ARM的USB操作,控制芯片为CH375实现操作.以及其他功能.包括AC,串口操作.

#ifndef ADS7843_H_
#define ADS7843_H_

#include    "def.h"
#include	"option.h"
#include	"44blib.h"
#include	"44b.h"


#include    "os_cpu.h"
#include	"ucos_ii.h"               /* uC/OS interface */
#include	"target.h"
#include    "os_cpu.h"

#define		CS_ADS7843	( 1<<6 )
#define		ADS7843_PENIRQ ( 1<<11 )

#define	CHX 	0x90 	//通道Y+的选择控制字	//0x94
#define	CHY 	0xD0	//通道X+的选择控制字	//0xD4


#define TP_DCLK(a)      rPDATF=((rPDATF&~0x100)|((!a<<8)&0x100))
#define TP_CS(a)		rPDATE=((rPDATE&~0x40)|((a<<6)&0x40))
#define TP_DIN(a)		rPDATF=((rPDATF&~0x20)|((a<<5)&0x20))
/*
 *	read from ads7843's pin
 */
#define TP_DOUT	    ((rPDATF>>7) & 0x1)	
#define TP_BUSY		((rPDATF>>6) & 0x1)
#define TP_IRQ		((rPDATF>>4) & 0x1)




class CAds7843
{
public:
	CAds7843();
	~CAds7843();
public:
	BOOL InitSio();//初始化SIO
	void SetPenNomal();//设置ADS7843中断检测使能
	void SetPenDisable();//禁止ADS7843中断检测
	void Server();//服务函数
	void Start();//启动AD转换

	S32 GetX();
	S32 GetY();
	BOOL GetAds( S32& ix, S32& iy );
private:
	void Select();//选中ads7843
	void DeSelect();//取消选中ads7843
	
public:
	void Run( void* Id );
	
private:
	BOOL bSioOpen;
	U32	 Ctrl;
	volatile S32 x;
	volatile S32 y;

	volatile U32 iStep;
	U8 cAdXHigh;
	U8 cAdXLow;
	U8 cAdYHigh;
	U8 cAdYLow;
	BOOL bADOK;
};


#endif