usbdriver.h

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/***************************************************************************
 *  $Id: usbdriver.h 150 2008-06-16 20:17:25Z merdmann $
 *
 *  Thu Nov 29 20:55:57 2007
 *  Copyright  2007 Michael Erdmann
 *  Email: michael.erdmann@snafu.de
 ****************************************************************************/

/*
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
#include "typedefs.h"
#include "dev.h"
#include "usb.h"

#ifndef _USBDRIVER_H
#define _USBDRIVER_H

#define MAX_EP          8


typedef union {
        byte    value;
    struct{
        unsigned BC             :2;
        unsigned BSTALL :1; 
        unsigned DTSEN  :1;
        unsigned INCDIS :1; 
        unsigned KEN    :1; 
        unsigned DTS    :1; 
        unsigned UOWN   :1;
    };
    struct{
        unsigned _BC    :2;
        unsigned PID    :4;
        unsigned                :1;
        unsigned _UOWN  :1;
    };
} BDSTAT;

typedef struct {
        BDSTAT STAT;
    byte CNT;
    POINTER ADR;
} BD;

typedef byte t_ep;
typedef byte t_bid;

typedef union {
        struct {
                unsigned  length : 10;
                unsigned  PID    :  4;
                unsigned  unused :  2;
        } ;
        unsigned value;
} t_transaction;

#define BUFFER(n) (byte __near*)(0x500+((n)*EP0_BUFF_SIZE))

void USB_Activate(void);

void USB_Shutdown(void);


void USB_Initialize(void);

/* specify the next data packaet type */
typedef enum {
        DATA0,
        DATA1,
        DATAX
} t_dts;

unsigned USB_Wait(t_ep ep, t_bid buffer, t_dts next);
unsigned USB_Send(t_ep ep, t_bid buffer, unsigned length, t_dts first );


extern t_dev usb_handler;


#define EP0_BUFF_SIZE           16   // 8, 16, 32, or 64

#endif

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