usb_task.h

MP3播放器详细设计方案

/*H**************************************************************************
* NAME:         usb_task.h
*----------------------------------------------------------------------------
* Copyright (c) 2002 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      snd1c-refd-nf-3_0_0      
* REVISION:     1.7     
*----------------------------------------------------------------------------
* PURPOSE:
* This file contains the USB task definition
*****************************************************************************/

#ifndef _USB_TASK_H_
#define _USB_TASK_H_

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


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

#define USB_WAIT_COMMAND    0                 /* wait command state */
#define USB_MASS_STORAGE    1                 /* mass storage state */

#define USB_WAIT_NB_RESUME              (8)   /* resume filter count */


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


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

void    usb_task_init (void);
void    usb_task (void);

#define COMMAND_PASSED                0x00
#define COMMAND_FAILED                0x01
#define PHASE_ERROR                   0x02

#endif  /* _USB_TASK_H_ */