touch.h

已经上传的YF-320240-3.5寸彩屏（可由单片机控制）的测试程序。主CPU为MEGA128

/*
触摸屏被按下时（即有触摸事件发生）则ADS7846向CPU发中断请求，CPU接到请求后，应延时一下再响应其请求，目的是为了消除抖动使得采样更准确。如果一次采样不准确。
ADS7846  触摸屏中断　外部中断6（INT6）
　　　　　DCLK    PD4  
          DIN     PD5
          READY   PD6
          DOUT　　PD7
*/
#define  T_CS_1  PORTD |= 0x40;
#define  T_CS_0  PORTD &=~0x40;
#define  DCLK_1  PORTD |= 0x10
#define  DCLK_0  PORTD &=~0x10
#define  DIN_1   PORTD |= 0x20
#define  DIN_0   PORTD &=~0x20
#define  DOUT    PIND&=0x80
#define  BUSY    PIND&=0x40
#define Touch_Int_ON  (EIMSK |= 0x40)
#define Touch_Int_STOP  (EIMSK &= ~0x40)

#define BEEPON PORTF &= ~0x08
#define BEEPOFF PORTF |= 0x08

extern struct Touch cursor;
extern void delay(unsigned char i);
extern void Init_Touch(void);
extern void Delayx10ms(unsigned int count);
typedef struct Touch
{
    unsigned int x;
	unsigned char y;
	unsigned int old_x;
	unsigned char old_y;
	unsigned char flag;
};