kbd_task.h

MP3设计源代码 使用atmel的单片机

/*H**************************************************************************
* NAME:         kbd_task.h
*----------------------------------------------------------------------------
* Copyright (c) 2002 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      snd1c-demo-df-sd-3_0_0      
* REVISION:     1.5     
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the Keyboard task definition
*****************************************************************************/

#ifndef _KBD_TASK_H_
#define _KBD_TASK_H_

/*_____ I N C L U D E S ____________________________________________________*/


/*_____ M A C R O S ________________________________________________________*/

#define KBD_DEBOUNCE_TEMPO  70/SCHEDULER_TICK   /* debounce period: 70 ms */
#define KBD_DEBOUNCE_INIT   0                   /* debounce counter init */
#define KBD_REP_START_TEMPO 500/SCHEDULER_TICK  /* start period: 500 ms */
#define KBD_REP_START_INIT  0                   /* repeat counter init */
#define KBD_REP_CONT_TEMPO  120/SCHEDULER_TICK  /* repeat period: 120 ms */
#define KBD_REP_CONT_INIT   0                   /* repeat_count init */
#define KBD_REP_LONG_TEMPO  3000/KBD_REP_CONT_TEMPO /* long repeat period: 3 s */


/*----- Task states -----*/
#define KBD_LOCK        (Byte)0x00
#define KBD_IDLE        (Byte)0x01
#define KBD_DEBOUNCE    (Byte)0x02
#define KBD_DECODE      (Byte)0x03
#define KBD_REP_START   (Byte)0x04
#define KBD_REP_CONT    (Byte)0x05
#define KBD_REP_LONG    (Byte)(KBD_REP_LONG_TEMPO + KBD_REP_CONT) 


/*_____ D E F I N I T I O N ________________________________________________*/


/*_____ D E C L A R A T I O N ______________________________________________*/

void    kbd_task_init (void);
void    kbd_task (void);
void    kbd_set_stop (void);
void    kbd_stop_repeat(void);


#endif /* _KBD_TASK_H_ */