#ifndef __TOUCH_H__
#define __TOUCH_H__
#include "stm32f10x.h"

    
//按键状态	 
#define Key_Down 0x01
#define Key_Up   0x00 


//笔杆结构体
typedef struct 
{
	u16 X0;//原始坐标
	u16 Y0;
	u16 X; //最终/暂存坐标
	u16 Y;						   	    
	u8  Key_Sta;//笔的状态			  
//触摸屏校准参数
	float xfac;
	float yfac;
	short xoff;
	short yoff;
}Pen_Holder;	   

extern Pen_Holder Pen_Point;


//与触摸屏芯片连接引脚	 
//PC3:T_MOSI
//PC2:T_MISO
//PC0:T_SCK
//PC13:T_CS
//PC1:T_PEN  


#define TOUCH_PEN_PORT              GPIOC
#define TOUCH_PEN_PIN               GPIO_Pin_1

#define Set_TOUCH_PEN  {GPIO_SetBits(TOUCH_PEN_PORT,TOUCH_PEN_PIN);}
#define Clr_TOUCH_PEN  {GPIO_ResetBits(TOUCH_PEN_PORT,TOUCH_PEN_PIN);} 
#define TOUCH_PEN    (GPIO_ReadInputDataBit(TOUCH_PEN_PORT, TOUCH_PEN_PIN))


#define TOUCH_DOUT_PORT              GPIOC
#define TOUCH_DOUT_PIN               GPIO_Pin_2

#define Set_TOUCH_DOUT  {GPIO_SetBits(TOUCH_DOUT_PORT,TOUCH_DOUT_PIN);}
#define Clr_TOUCH_DOUT  {GPIO_ResetBits(TOUCH_DOUT_PORT,TOUCH_DOUT_PIN);} 
#define TOUCH_DOUT    (GPIO_ReadInputDataBit(TOUCH_DOUT_PORT, TOUCH_DOUT_PIN))

#define TOUCH_TDIN_PORT              GPIOC
#define TOUCH_TDIN_PIN               GPIO_Pin_3

#define Set_TOUCH_TDIN  {GPIO_SetBits(TOUCH_TDIN_PORT,TOUCH_TDIN_PIN);}
#define Clr_TOUCH_TDIN  {GPIO_ResetBits(TOUCH_TDIN_PORT,TOUCH_TDIN_PIN);} 


#define TOUCH_TCLK_PORT              GPIOC
#define TOUCH_TCLK_PIN               GPIO_Pin_0

#define Set_TOUCH_TCLK  {GPIO_SetBits(TOUCH_TCLK_PORT,TOUCH_TCLK_PIN);}
#define Clr_TOUCH_TCLK  {GPIO_ResetBits(TOUCH_TCLK_PORT,TOUCH_TCLK_PIN);}
 

#define TOUCH_TCS_PORT              GPIOC 
#define TOUCH_TCS_PIN               GPIO_Pin_13

#define Set_TOUCH_TCS  {GPIO_SetBits(TOUCH_TCS_PORT,TOUCH_TCS_PIN);}
#define Clr_TOUCH_TCS  {GPIO_ResetBits(TOUCH_TCS_PORT,TOUCH_TCS_PIN);}

 
//ADS7843/7846/UH7843/7846/XPT2046/TSC2046 指令集
#define CMD_RDY 0X90  //0B10010000即用差分方式读X坐标
#define CMD_RDX	0XD0  //0B11010000即用差分方式读Y坐标   											 
#define TEMP_RD	0XF0  //0B11110000即用差分方式读Y坐标    
 
			  
void Touch_Init(void);		 //初始化
u8 Read_ADS(u16 *x,u16 *y);	 //带舍弃的双方向读取
u8 Read_ADS2(u16 *x,u16 *y); //带加强滤波的双方向坐标读取
u16 ADS_Read_XY(u8 xy);		 //带滤波的坐标读取(单方向)
u16 ADS_Read_AD(u8 CMD);	 //读取AD转换值
void ADS_Write_Byte(u8 num); //向控制芯片写入一个数据
void Drow_Touch_Point(u8 x,u16 y);//画一个坐标叫准点
void Draw_Big_Point(u8 x,u16 y);  //画一个大点
void Touch_Adjust(void);          //触摸屏校准
void Save_Adjdata(void);		  //保存校准参数
u8 Get_Adjdata(void); 			  //读取校准参数
void Pen_Int_Set(u8 en); 		  //PEN中断使能/关闭
void Convert_Pos(void);           //结果转换函数	 
#endif