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Diffstat (limited to 'LUFA/Drivers/Board/Dataflash.h')
| -rw-r--r-- | LUFA/Drivers/Board/Dataflash.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/LUFA/Drivers/Board/Dataflash.h b/LUFA/Drivers/Board/Dataflash.h new file mode 100644 index 0000000..9c6bb8b --- /dev/null +++ b/LUFA/Drivers/Board/Dataflash.h @@ -0,0 +1,212 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, 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
+ * \brief Master include file for the board dataflash IC driver.
+ *
+ * This file is the master dispatch header file for the board-specific dataflash driver, for boards containing
+ * dataflash ICs for external non-volatile storage.
+ *
+ * User code should include this file, which will in turn include the correct dataflash driver header file for
+ * the currently selected board.
+ *
+ * If the BOARD value is set to BOARD_USER, this will include the /Board/Dataflash.h file in the user project
+ * directory.
+ *
+ * For possible BOARD makefile values, see \ref Group_BoardTypes.
+ */
+
+/** \ingroup Group_BoardDrivers
+ * @defgroup Group_Dataflash Dataflash Driver - LUFA/Drivers/Board/Dataflash.h
+ *
+ * \section Sec_Dependencies Module Source Dependencies
+ * The following files must be built with any user project that uses this module:
+ * - None
+ *
+ * \section Module Description
+ * Dataflash driver. This module provides an easy to use interface for the Dataflash ICs located on many boards,
+ * for the storage of large amounts of data into the Dataflash's non-volatile memory.
+ *
+ * If the BOARD value is set to BOARD_USER, this will include the /Board/Dataflash.h file in the user project
+ * directory. Otherwise, it will include the appropriate built in board driver header file.
+ *
+ * For possible BOARD makefile values, see \ref Group_BoardTypes.
+ *
+ * @{
+ */
+
+#ifndef __DATAFLASH_H__
+#define __DATAFLASH_H__
+
+ /* Macros: */
+ #if !defined(__DOXYGEN__)
+ #define __INCLUDE_FROM_DATAFLASH_H
+ #define INCLUDE_FROM_DATAFLASH_H
+ #endif
+
+ /* Includes: */
+ #include "../Peripheral/SPI.h"
+ #include "../../Common/Common.h"
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ #if !defined(__DOXYGEN__)
+ #define __GET_DATAFLASH_MASK2(x, y) x ## y
+ #define __GET_DATAFLASH_MASK(x) __GET_DATAFLASH_MASK2(DATAFLASH_CHIP,x)
+ #endif
+
+ /** Retrieves the Dataflash chip select mask for the given Dataflash chip index.
+ *
+ * \param[in] index Index of the dataflash chip mask to retrieve
+ *
+ * \return Mask for the given Dataflash chip's /CS pin
+ */
+ #define DATAFLASH_CHIP_MASK(index) __GET_DATAFLASH_MASK(index)
+
+ /* Inline Functions: */
+ /** Initialises the dataflash driver so that commands and data may be sent to an attached dataflash IC.
+ * The AVR's SPI driver MUST be initialized before any of the dataflash commands are used.
+ */
+ static inline void Dataflash_Init(void);
+
+ /** Determines the currently selected dataflash chip.
+ *
+ * \return Mask of the currently selected Dataflash chip, either \ref DATAFLASH_NO_CHIP if no chip is selected
+ * or a DATAFLASH_CHIPn mask (where n is the chip number).
+ */
+ static inline uint8_t Dataflash_GetSelectedChip(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
+
+ /** Selects the given dataflash chip.
+ *
+ * \param[in] ChipMask Mask of the Dataflash IC to select, in the form of DATAFLASH_CHIPn mask (where n is
+ * the chip number).
+ */
+ static inline void Dataflash_SelectChip(const uint8_t ChipMask) ATTR_ALWAYS_INLINE;
+
+ /** Deselects the current dataflash chip, so that no dataflash is selected. */
+ static inline void Dataflash_DeselectChip(void) ATTR_ALWAYS_INLINE;
+
+ /** 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[in] PageAddress Address of the page to manipulate, ranging from
+ * ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
+ */
+ static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress);
+
+ /** Toggles the select line of the currently selected dataflash IC, so that it is ready to receive
+ * a new command.
+ */
+ static inline void Dataflash_ToggleSelectedChipCS(void);
+
+ /** Spin-loops while the currently selected dataflash is busy executing a command, such as a main
+ * memory page program or main memory to buffer transfer.
+ */
+ static inline void Dataflash_WaitWhileBusy(void);
+
+ /** 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[in] PageAddress Page address within the selected dataflash IC
+ * \param[in] BufferByte Address within the dataflash's buffer
+ */
+ static inline void Dataflash_SendAddressBytes(uint16_t PageAddress,
+ const uint16_t BufferByte);
+
+ /** Sends a byte to the currently selected dataflash IC, and returns a byte from the dataflash.
+ *
+ * \param[in] Byte of data to send to the dataflash
+ *
+ * \return Last response byte from the dataflash
+ */
+ static inline uint8_t Dataflash_TransferByte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
+ static inline uint8_t Dataflash_TransferByte(const uint8_t Byte)
+ {
+ return SPI_TransferByte(Byte);
+ }
+
+ /** Sends a byte to the currently selected dataflash IC, and ignores the next byte from the dataflash.
+ *
+ * \param[in] Byte of data to send to the dataflash
+ */
+ static inline void Dataflash_SendByte(const uint8_t Byte) ATTR_ALWAYS_INLINE;
+ static inline void Dataflash_SendByte(const uint8_t Byte)
+ {
+ SPI_SendByte(Byte);
+ }
+
+ /** Sends a dummy byte to the currently selected dataflash IC, and returns the next byte from the dataflash.
+ *
+ * \return Last response byte from the dataflash
+ */
+ static inline uint8_t Dataflash_ReceiveByte(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
+ static inline uint8_t Dataflash_ReceiveByte(void)
+ {
+ return SPI_ReceiveByte();
+ }
+
+ /* Includes: */
+ #if (BOARD == BOARD_NONE)
+ #error The Board Buttons driver cannot be used if the makefile BOARD option is not set.
+ #elif (BOARD == BOARD_USBKEY)
+ #include "USBKEY/Dataflash.h"
+ #elif (BOARD == BOARD_STK525)
+ #include "STK525/Dataflash.h"
+ #elif (BOARD == BOARD_STK526)
+ #include "STK526/Dataflash.h"
+ #elif (BOARD == BOARD_XPLAIN)
+ #include "XPLAIN/Dataflash.h"
+ #elif (BOARD == BOARD_XPLAIN_REV1)
+ #include "XPLAIN/Dataflash.h"
+ #elif (BOARD == BOARD_EVK527)
+ #include "EVK527/Dataflash.h"
+ #elif (BOARD == BOARD_USER)
+ #include "Board/Dataflash.h"
+ #else
+ #error The selected board does not contain a dataflash IC.
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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