keyboard.h

连接到SPI总线的键盘驱动程序

#ifndef AT91_KEYBOARD_H
#define AT91_KEYBOARD_H

#define MASTER_CLOCK	         60000000
#define PS2_CLK	                 400000
#define SPICLK_FOR_PS2	         (MASTER_CLOCK / (2*PS2_CLK))


#define BUFF_SIZE				    64		// Keyboard buffer size

//* defines for keyboard
#define AT91C_ISKEYBOARD_FRAME	    (1 << 6)
#define AT91C_CAPSLOCK			    0x10
#define AT91C_ISKEYUP				0x02
#define AT91C_KEY_RELEASE			0
#define AT91C_KEY_PRESSED			1

//* defines for mouse
#define AT91C_ISMOUSE_FRAME			0x40
#define AT91C_BUTTON_UP			    0
#define AT91C_BUTTON_CLICK		    1
#define AT91C_LEFT_BUTTONCLICK	    0x01
#define AT91C_RIGHT_BUTTONCLICK	    0x02
#define AT91C_MIDDLE_BUTTONCLICK	0x04
#define AT91C_MOUSE_XSIGN    	    0x08
#define AT91C_MOUSE_YSIGN    	    0x10
		
#define  NULL	0


typedef struct _AT91S_MOUSE{
	// Public Method:
	// ==============
	void (*Handler)(struct _AT91S_MOUSE *, unsigned char *);
	int (*IsMouseMove) (struct _AT91S_MOUSE *);
	int (*ReadMouse)(struct _AT91S_MOUSE *, int *);

	// Following pointers are used to handle a circular buffer
	int *pStartMousseBuffer;
	int *pInMousseBuffer;
	int *pOutMousseBuffer;
	int  NbKey;	
	
}AT91S_MOUSE, *AT91PS_MOUSE;


typedef struct _AT91S_KEYBOARD {
	// Public Method:
	// ==============
	void (*Handler)(struct _AT91S_KEYBOARD *, unsigned char *);
	int (*IsKeyPressed) (struct _AT91S_KEYBOARD *);
	int (*ReadKey) (struct _AT91S_KEYBOARD *, char *);

	// Following pointers are used to handle a circular buffer
	char *pStartBuffer;
	char *pInBuffer;
	char *pOutBuffer;
	int  NbKey;	
	
} AT91S_KEYBOARD, *AT91PS_KEYBOARD;

typedef struct _AT91S_PS2CTRL {
	AT91PS_KEYBOARD pSkeyBoard;
	AT91PS_MOUSE    pSMouse;
	
	// Private data:
	// =============
	char IsKeyToRead;
	unsigned char *pPs2_Fifo;	
		
}AT91S_PS2CTRL, *AT91PS_PS2CTRL;

#endif