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118 lines
5.2 KiB
118 lines
5.2 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, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all 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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/*
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This is a stub driver header file, for implementing custom board
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layout hardware with compatible LUFA board specific drivers. If
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the library is configured to use the BOARD_USER board mode, this
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driver file should be completed and copied into the "/Board/" folder
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inside the application's folder.
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This stub is for the board-specific component of the LUFA Dataflash
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driver.
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*/
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#ifndef __DATAFLASH_USER_H__
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#define __DATAFLASH_USER_H__
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/* Includes: */
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// TODO: Add any required includes here
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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 // TODO: Replace this with a mask of all the /CS pins of all dataflashes
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#define DATAFLASH_CHIPCS_DDR // TODO: Replace with the DDR register name for the board's Dataflash ICs
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#define DATAFLASH_CHIPCS_PORT // TODO: Replace with the PORT register name for the board's Dataflash ICs
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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 // TODO: Replace with the number of dataflashes on the board, max 2
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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 // TODO: Replace with mask to select the first Dataflash chip
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/** Mask for the second dataflash chip selected. */
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#define DATAFLASH_CHIP2 // TODO: Replace with mask to select the second Dataflash chip, if available
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/** Internal main memory page size for the board's dataflash ICs. */
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#define DATAFLASH_PAGE_SIZE // TODO: Replace with the page size for the Dataflash ICs
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/** Total number of pages inside each of the board's dataflash ICs. */
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#define DATAFLASH_PAGES // TODO: Replace with the total number of pages inside one of the Dataflash ICs
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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[in] 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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// TODO: If more than one dataflash chip, select the correct chip from the page address here
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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[in] PageAddress Page address within the selected dataflash IC
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* \param[in] 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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// TODO: If more than one dataflash chip, adjust absolute page address to be correct for the current chip,
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// also the shifts may need to be altered to suit the dataflash model being used
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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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