ps2.h

来自「在cypress晶片上實驗讀取ps2 keyboard按鍵後顯示在lcd上,同時」· C头文件 代码 · 共 44 行

#ifndef	_PS2_H_
#define _PS2_H_


/* Uncomment the next line to use the PIC's SSP Module*/
#define KB_MODULE 0

/* Change port as required - defaults to port b */
#define	KB_DAT			RB1		/* clock on port B bit 2 */
#define	KBDAT_DIR		TRISB1

#define KB_CLK             RB0             /* data on port B bit 1 */
#define	KBCLK_DIR		TRISB0
#define KBTRIS TRISB

//#define M_SDA_INP	0x02
//#define M_SDA_OUT   0xFD
//#define M_SCL_INP   0x04
//#define M_SCL_OUT	0xFB

#define KB_INPUT	1		/* data direction input */
#define KB_OUTPUT	0		/* data direction output */

#define KB_READ	0x01		/* read bit used with address */
#define KBC_WRITE	0x00		/* write bit used with address */

#define FALSE		0
#define TRUE		!FALSE

#define KB_ERROR	(-1)
//#define I2C_LAST	FALSE		/* SendAck: no more bytes to send */
//#define I2C_MORE	TRUE		/* SendAck: more bytes to send */
/*
#define i2c_Start()		i2c_Restart()
#define i2c_WriteTo(address)	i2c_Open((address), 0x0) //I2C_WRITE)
#define i2c_ReadFrom(address)	i2c_Open((address), 0x1) //I2C_READ)

#define KBCLK_HIGH() KB_CLK = 1; KBCLK_DIR = KB_OUTPUT
#define KBCLK_LOW()  KB_CLK = 0; KBCLK_DIR = KB_OUTPUT
#define KBDAT_HIGH() KB_DAT = 1; KBDAT_DIR = KB_OUTPUT
#define KBDAT_LOW()  KB_DAT = 0; KBDAT_DIR = KB_OUTPUT
*/
#endif			/* _PS2_H_ */