/*
    FreeRTOS V8.0.0:rc1 - Copyright (C) 2014 Real Time Engineers Ltd. 
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that has become a de facto standard.             *
     *                                                                       *
     *    Help yourself get started quickly and support the FreeRTOS         *
     *    project by purchasing a FreeRTOS tutorial book, reference          *
     *    manual, or both from: http://www.FreeRTOS.org/Documentation        *
     *                                                                       *
     *    Thank you!                                                         *
     *                                                                       *
    ***************************************************************************

    This file is part of the FreeRTOS distribution.

    FreeRTOS is free software; you can redistribute it and/or modify it under
    the terms of the GNU General Public License (version 2) as published by the
    Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.

    >>! NOTE: The modification to the GPL is included to allow you to distribute
    >>! a combined work that includes FreeRTOS without being obliged to provide
    >>! the source code for proprietary components outside of the FreeRTOS
    >>! kernel.

    FreeRTOS 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.  Full license text is available from the following
    link: http://www.freertos.org/a00114.html

    1 tab == 4 spaces!

    ***************************************************************************
     *                                                                       *
     *    Having a problem?  Start by reading the FAQ "My application does   *
     *    not run, what could be wrong?"                                     *
     *                                                                       *
     *    http://www.FreeRTOS.org/FAQHelp.html                               *
     *                                                                       *
    ***************************************************************************

    http://www.FreeRTOS.org - Documentation, books, training, latest versions,
    license and Real Time Engineers Ltd. contact details.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
    including FreeRTOS+Trace - an indispensable productivity tool, a DOS
    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
    Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
    engineered and independently SIL3 certified version for use in safety and
    mission critical applications that require provable dependability.

    1 tab == 4 spaces!
*/

#ifndef USB_DEMO_H
#define USB_DEMO_H


/*-----------------------------------------------------------*/

#define usbQUEUE_LENGTH						( 0x3 )	/* Must have all bits set! */
#define usbEND_POINT_0						( 0 )
#define usbEND_POINT_1						( 1 )
#define usbRX_COUNT_MASK					( ( unsigned long ) 0x7ff )
#define AT91C_UDP_STALLSENT					AT91C_UDP_ISOERROR

/* Structure used to take a snapshot of the USB status from within the ISR. */
typedef struct X_ISR_STATUS
{
	unsigned long ulISR;
	unsigned long ulCSR0;
	unsigned char ucFifoData[ 8 ];
} xISRStatus;

/* Macros to manipulate the control and status registers.  These registers 
cannot be accessed using a direct read modify write operation outside of the 
ISR as some bits are left unchanged by writing with a 0, and some are left 
unchanged by writing with a 1. */

#define usbCSR_SET_BIT( pulValueNow, ulBit )											\
{																						\
	/* Set TXCOMP, RX_DATA_BK0, RXSETUP, */												\
	/* STALLSENT and RX_DATA_BK1 to 1 so the */											\
	/* write has no effect. */															\
	( * ( ( unsigned long * ) pulValueNow ) ) |= ( unsigned long ) 0x4f;		\
																						\
	/* Clear the FORCE_STALL and TXPKTRDY bits */										\
	/* so the write has no effect. */													\
	( * ( ( unsigned long * ) pulValueNow ) ) &= ( unsigned long ) 0xffffffcf;	\
																						\
	/* Set whichever bit we want set. */												\
	( * ( ( unsigned long * ) pulValueNow ) ) |= ( ulBit );							\
}

/*
 * Creates the queue used to communicate between the USB task and the USB ISR, then
 * createst the task that manages the USB peripheral.
 */
void vStartUSBTask( unsigned portBASE_TYPE uxPriority );

#endif