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117 lines
4.2 KiB
117 lines
4.2 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Board specific Dataflash driver header for the STK525.
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*
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* \note This file should not be included directly. It is automatically included as needed by the dataflash driver
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* dispatch header located in LUFA/Drivers/Board/Dataflash.h.
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*/
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/** \ingroup Group_Dataflash
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* @defgroup Group_Dataflash_STK525 STK525
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*
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* @{
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*/
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#ifndef __DATAFLASH_STK525_H__
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#define __DATAFLASH_STK525_H__
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/* Includes: */
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#include "AT45DB321C.h"
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/* Preprocessor Checks: */
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#if !defined(INCLUDE_FROM_DATAFLASH_H)
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#error Do not include this file directly. Include LUFA/Drivers/Board/Dataflash.h instead.
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#endif
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Macros: */
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#define DATAFLASH_CHIPCS_MASK (1 << 4)
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#define DATAFLASH_CHIPCS_DDR DDRB
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#define DATAFLASH_CHIPCS_PORT PORTB
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#endif
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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/** Constant indicating the total number of dataflash ICs mounted on the selected board. */
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#define DATAFLASH_TOTALCHIPS 1
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/** Mask for no dataflash chip selected. */
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#define DATAFLASH_NO_CHIP DATAFLASH_CHIPCS_MASK
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/** Mask for the first dataflash chip selected. */
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#define DATAFLASH_CHIP1 0
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/** Internal main memory page size for the board's dataflash IC. */
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#define DATAFLASH_PAGE_SIZE 512
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/** Total number of pages inside the board's dataflash IC. */
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#define DATAFLASH_PAGES 8192
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/* Inline Functions: */
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/** Selects a dataflash IC from the given page number, which should range from 0 to
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* ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1). For boards containing only one
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* dataflash IC, this will select DATAFLASH_CHIP1. If the given page number is outside
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* the total number of pages contained in the boards dataflash ICs, all dataflash ICs
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* are deselected.
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*
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* \param PageAddress Address of the page to manipulate, ranging from
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* ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
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*/
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static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress)
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{
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Dataflash_DeselectChip();
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if (PageAddress >= (DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS))
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return;
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Dataflash_SelectChip(DATAFLASH_CHIP1);
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}
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/** Sends a set of page and buffer address bytes to the currently selected dataflash IC, for use with
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* dataflash commands which require a complete 24-byte address.
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*
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* \param PageAddress Page address within the selected dataflash IC
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* \param BufferByte Address within the dataflash's buffer
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*/
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static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, const uint16_t BufferByte)
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{
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Dataflash_SendByte(PageAddress >> 5);
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Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));
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Dataflash_SendByte(BufferByte);
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}
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#endif
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/** @} */
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