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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Board specific HWB driver header for the STK525.
*
* \note This file should not be included directly. It is automatically included as needed by the dataflash driver
* dispatch header located in LUFA/Drivers/Board/Dataflash.h.
*/
/** \ingroup Group_Dataflash
* @defgroup Group_Dataflash_USBKEY USBKEY
*
* @{
*/
#ifndef __DATAFLASH_USBKEY_H__
#define __DATAFLASH_USBKEY_H__
/* Includes: */
#include "AT45DB642D.h"
/* Preprocessor Checks: */
#if !defined(INCLUDE_FROM_DATAFLASH_H)
#error Do not include this file directly. Include LUFA/Drivers/Board/Dataflash.h instead.
#endif
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Macros: */
#define DATAFLASH_CHIPCS_MASK ((1 << 1) | (1 << 0))
#define DATAFLASH_CHIPCS_DDR DDRE
#define DATAFLASH_CHIPCS_PORT PORTE
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** Constant indicating the total number of dataflash ICs mounted on the selected board. */
#define DATAFLASH_TOTALCHIPS 2
/** Mask for no dataflash chip selected. */
#define DATAFLASH_NO_CHIP DATAFLASH_CHIPCS_MASK
/** Mask for the first dataflash chip selected. */
#define DATAFLASH_CHIP1 (1 << 1)
/** Mask for the second dataflash chip selected. */
#define DATAFLASH_CHIP2 (1 << 0)
/** Internal main memory page size for the board's dataflash ICs. */
#define DATAFLASH_PAGE_SIZE 1024
/** Total number of pages inside each of the board's dataflash ICs. */
#define DATAFLASH_PAGES 8192
/* Inline Functions: */
/** Selects a dataflash IC from the given page number, which should range from 0 to
* ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1). For boards containing only one
* dataflash IC, this will select DATAFLASH_CHIP1. If the given page number is outside
* the total number of pages contained in the boards dataflash ICs, all dataflash ICs
* are deselected.
*
* \param PageAddress Address of the page to manipulate, ranging from
* ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
*/
static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress)
{
Dataflash_DeselectChip();
if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS))
return;
if (PageAddress & 0x01)
Dataflash_SelectChip(DATAFLASH_CHIP2);
else
Dataflash_SelectChip(DATAFLASH_CHIP1);
}
/** Sends a set of page and buffer address bytes to the currently selected dataflash IC, for use with
* dataflash commands which require a complete 24-byte address.
*
* \param PageAddress Page address within the selected dataflash IC
* \param BufferByte Address within the dataflash's buffer
*/
static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, const uint16_t BufferByte)
{
PageAddress >>= 1;
Dataflash_SendByte(PageAddress >> 5);
Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));
Dataflash_SendByte(BufferByte);
}
#endif
/** @} */
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