mem_task.h

ATMEL公司AT89C51SND1为主控制器MP3源代码

/*H**************************************************************************
* NAME:         mem_task.h
*----------------------------------------------------------------------------
* Copyright (c) 2003 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      snd1c-refd-nf-4_0_3      
* REVISION:     1.8     
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the memory task definition
*****************************************************************************/

#ifndef _MEM_TASK_H_
#define _MEM_TASK_H_

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


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

/*----- Memory status -----*/
#define MEM_BUSY            ((Byte)0)
#define MEM_READY           ((Byte)1)
#define MEM_FORMAT          ((Byte)2)
#define MEM_NO_CARD         ((Byte)3)


#define MEM_BSY       0
#define MEM_OK        1
#define MEM_KO        2



/*----- Memory delay -----*/
#define MEM_FUNCT_TIME      ((Byte)0x00)
#define MEM_WRITE_TIME      ((Byte)0xFD)    /* 2 ticks min time_out */
#define MEM_DELAY_TIME      ((Byte)0x01)    /* 1 tick min time_out */
#define MEM_TIME_OUT        ((Byte)0x00)


/*----- Task states -----*/
#define MEM_INIT              ((Byte)18)
#define MEM_CHIP_INIT         ((Byte)0)
#define MEM_CHIP_IDLE         ((Byte)1)
#define MEM_CHIP_ERR_FMT      ((Byte)2)
#define MEM_CHIP_ERR          ((Byte)3)
#define MEM_CARD_INIT         ((Byte)4)
#define MEM_CARD_IDLE         ((Byte)5)
#define MEM_CARD_ERR_FMT      ((Byte)6)
#define MEM_CARD_ERR          ((Byte)7)
#define MEM_CARD_NO_CARD      ((Byte)8)

#define MEM_CARD_1           ((bit)0)
#define MEM_CARD_2           ((bit)1)


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


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

void    mem_task_init (void);
void    mem_task (void);
Byte    mem_status (void);
bit     mem_check_card (void);
void    mem_card_select (bit);
void    mem_select_next (void);
bit     mem_select_format (void);


#endif  /* _MEM_TASK_H_ */